1990_Samsung_AHCT_HCTLS_Data_Book 1990 Samsung AHCT HCTLS Data Book

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Data Book

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AHCT/HCTLS

(High Speed CMOS Logic IC)

1990

INTRODUCTION
Samsung Semiconductor is a broad-line manufacturer of semiconductors that range
from VLSI circuits such as memories (DRAM, SRAM, EPROM and EEPROM),
microprocessors, gate arrays and programmable logic to transistors, linear circuits
and telecommunications products.
The KS54/74AHCT and the KS54/74HCTLS high-performance CMOS logic
families are Samsung's entry into the general purpose digital logic area.
The KS54/74AHCT advanced high-speed CMOS family is designed to provide
performance equivalent to or better than that of the bipolar 54/74ALS (Advanced
Low-power Scholttky) family with the additional CMOS advantages of low power
dissipation and high noise immunity. The AHCT parts can therefore be used as
direct plug-in replacements for their ALS counterparts (and in most applications
for FAST and Schottky) and Improve the system performance.
The 54/74HCTLS high-speed CMOS family offers similar benefits as a replacement for industry-standard 54/74LS (Low-power Schottky), 54/74HCT and
54/74HC. While meeting all of the HCT electrical specifications, it also provides improved speed and drive capability, so that LS parts can be replaced with no performance degradation.

PRINTED IN KOREA
Circuit diagrams utilizing SAMSUNG products are included as a means of illustrating typical
semiconductor applications; conseqLiently, complete information sufficient for construction
purposes is not necessarily given. The information has been carefully checked and is believed
to be entirely reliable. However, no responsibility is assumed for inaccuracies. Furthermore,
such information does not convey to the purchaser of the semiconductor devices described
herein any license under the patent rights of SAMSUNG or others. SAMSUNG reserve the right
to change device specifications.

High Performance CMOS Logic Data Book

KS54174AHCT
Advanced High-Speed CMOS
KS54174HCTLS
High-Speed CMOS

SAMSUNG
DATA BOOK LIST
I. Semiconductor Product Guide
II. Transistor Data Book
Vol. 1: Small Signal TR
Vol. 2: Bipolar Power TR
Vol. 3: TR Pellet

III. Linear IC Data Book
Vol. 1: Audio/Video
Vol. 2: Telecom/Industrial/TOY
Vol. 3: Data Converter IC

IV. CMOS Consumer IC Data Book
V. High Speed CMOS Logic Data Book
VI. MOS Memory Data Book
VII. SFET Data Book
VIII. MPR Data Book
IX. CPL Data Book
X. Dot Matrix Data Book

TABLE OF CONTENTS

1.
2.
3.
4.
5.
6.
7.

Product Guide ......................-................... 11
Parameter Measurement Information .................. 23
Technical Overview ................................... 31
KS54/74AHCT Data Sheets .......................... 57
KS54/74HCTLS Data Sheets ....................... 425
Package Dimensions & Ordering Information ....... 793
Samsung Sales Offices and Manufacturer's
Representatives ....................................... 799

HIGH SPEED
CMOS LOGIC ICs

FUNCTION GUIDE

1. Alphanumeric Index
1) K554174AHCT Family
Device
KS54/7 4A HCTOO
KS54/74AHCT01
KS54/74A HCT02
KS54/74AHCT03
KS54/74AHCT04
KS54/74AHCT05
KS54/74AHCT08
KS54/74A HCT09
KS54/7 4AHCT1 0
KS54/74AHCT11
KS54/74AH9T12
KS54/74AHCT14
KS54/74AHCT20
KS54/74AHCT21
KS54/74A H CT22
KS54/74AHCT27
KS54/74AHCT30
KS54/74AHCT32
KS54/74A H CT 42
KS54/74AHCT51
KS54/74AHCT58
KS54/74AHCT73
KS54/74AHCT74
KS54/74AHCT75
KS54/74AHCT76
KS54/7 4A HCTn
KS54/7 4A H CT78
KS54/74AHCT86
KS54/74AHCT90
KS54/74AHCT92
KS54/74AHCT93
KS54/74AHCT107
KS54/74AHCT109
KS54/74AHCT112
KS54/74AHCT123
KS54/74AHCT125
KS54/74AHCT126
KS54/74AHCT132
KS54/74AHCT133
KS54/74AHCT138
KS54/74AHCT139
KS54/74AHCT148
KS54/74AHCT151
KS54/74AHCT153
KS54/74AHCT154
KS54/74AHCT155
KS54/74AHCT157
KS54/74AHCT158
KS54/74AHCT160
KS54/74AHCT161
KS54/74AHCT162
KS54/74AHCT163
KS54/7 4AH CT164
KS54/74AHCT165
KS54/74AHCT166

Function
Quad 2-lnput NAND Gates
Quad 2-lnput NAND Gates with Open-Drain Outputs
Quad 2-lnput NOR Gates
Quad 2-lnput NAND Gates with Open-Drain Outputs
Hex Inverters
Hex Inverters with Open-Drain Outputs
Quad 2-lnput AND Gates
Quad 2-lnput AND Gates with Open-Drain Outputs
Triple 3-lnput NAND Gates
Triple 3-lnput AND Gates
Triple 3-lnput NAND Gates with Open-Drain Outputs
Hex Schmitt-Trigger Inverters
Dual 4-lnput NAND Gates
Dual 4-lnput AND Gates
Dual 4,lnput NAND Gates with Open-Drain Outputs
Triple 3-lnput NOR Gates
8-lnput NAND Gate
Quad 2-lnput OR Gates
BCD-to-Decimal Decoder
Dual AND-OR-Invert Gates
Dual AND-OR Gates
Dual J-K Negative-Edge-Triggered Filp-Flops with Clear
Dual D-Type Positive-Edge-Triggered Filp-Flops with Preset and Clear
Quad Bistable Transparent Latches
Dual J-K Negative-Edge-Triggered Filp Flops with Preset and Clear
Quad D-Type Latches
Dual J-K Negative-Edge-Triggered Filp-Flops with Preset, Common Clear and
Common Clock
Quad 2-lnput Exclusive-OR Gates
Decade Counters
Divide-by-Twelve Counter
4 Bit Binary Counter Divide by Two and Divide by Eight
Dual J-K Negative-Edge-Triggered Filp-Flops with Clear
Dual J-K Positive-Edge-Triggered Filp-Flops with Preset and Clear
Dual J-K Negative-Edge-Triggered Filp-Flops with Preset and Clear
Dual Retriggerable Monostable Multivibrators
Quad Buffers with 3-State Outputs
Quad Buffers with 3-State Outputs
Quad 2-lnput NAND Gates with Schmitt-Trigger Inputs
13-lnput 'NAND Gate
3-Line to 8-Line DecoderslDemultiplexers
Dual 1 of 4 Decoders/Demultiplexers
8-Line to 3-Line Priority Encoders
1 of 8 Data Selectors/Multiplexers
Dual 1 of 4 Data Selectors/Multiplexers
4·Line to 16·Line Decoders/Demultiplexers
Dual 2 to 4 Line DecoderslDemultiplexers
Quad 2-Line to 1-Line Data Selectors/Multiplexers
Quad 2-Line to 1-Line Data Selectors/Multiplexers
Synchronous 4-Bit Decade Counters
Synchronous 4-Bit Binary Counters
Synchronous 4-Bit Decade Counters
Synchronous 4-Bit Binary Counters
8·Bit Serial·ln/Paralle-Out Shift Registers
8-Bit Parallel-In/Serial-Out Shift Registers
8-Bit Parallel-In/Serial-Out Shift Registers with Clear

c8SAMSUNG
1:'1__ ...__ :_-

I

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13

HIGH SPEED
F,UNCTION' GUIDE

CMOS LOGIC .ICs
KS54174AHCT Family

(continued)
Function

Device
KS54/74AHCT168
KS54/74AHCT169
KS54/74AHCT173
. KS54/74AHCT174
KS54/74AHCT175
KS54/74AHCT181
KS54/74AHCT182
KS54/74AHCT183
KS54/74AHCT190
KS54/74AHCT191
KS54/74AHCT192
KS54/7 4AH CT193
KS54/74AHCT194
KS54/74AHCT195
KS54/74AHCT210
KS54/74AHCT238
KS54/74AHCT239
KS54/74AHCT240
KS54/74AHCT241
KS54/74AHCT242
KS54/74AHCT243
KS54/74AHCT244
KS54/74AHCT245
KS 54/7 4AH CT251
KS54/74AHCT253
KS54/74AHCT257
KS54/74AHCT258
KS54/74AHCT259
KS54/7 4AH CT266
KS54/74AHCT273
KS54/74AHCT280
KS54/74AHCT299
KS54/74AHCT322
KS54/74AHCT352
KS54/7 4AH CT353
KS54/7 4AH CT365
KS54/74AHCT366
KS54/74AHCT367
KS54/74AHCT368
KS54/74AHCT373
KS54/7 4AHCT374
KS54/74AHCT377
KS54/74AHCT390
KS54/74AHCT393
KS54/74AHCT399
KS54/74AHCT423
KS54/74AHCT465
KS 54/74AH CT466
KS54/74AHCT467
KS54/74AHCT468
KS54/74AHCT518
KS54/74AHCT519
KS54/74AHCT520
KS54/74AHCT521
KS54/74AHCT522
KS 54/74AH CT533
KS54/74AHCT534
KS54/7 4AH CT540

Synchronous 4-Bit Up/Down Decade Counters
Synchronous 4-Bit Up/Down Binary Counters
4-Bit D-Type Registers with 3-State Outputs
Hex D-Type Filp-Flops with Clear
Quad D-Type Filp-Flops with Clear
4-Bit Arithmetic Logic Unit
Look-Ahead Carry Generator
Dual High Speed Adder
Presettable Synchronous BCD Decade Up/Down Counter
Synchronous 4-Bit Up/Down Binary Counters
Presettable Synchronous BCD Decade Up/Down Counter
Synchronous 4-Bit Up/Down Binary Counters with Dual Clock
4-Bit Bidirectional Universal Shift Registers
4-Bit Bidirectional Universal Shift Registers
Octal Butters and Line Drivers with 3-State Outputs
3-Line to 8-Line Decoders/Demultiplexers
Dual 1-of-4 Decoders/Demultiplexers
Octal Butters and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Quad Bus Transceivers with 3-State Outputs
Quad Bus Transceivers with 3-State Outputs
Octal Butters and Line Drivers with 3-State Outputs
Octal Bus Transceivers with 3-State Outputs
1 of 8 Data Selectors/Multiplexers with 3-State Outputs
Dual 1 of 4 Data Selectors/Multiplexers with 3-State Outputs
Quad 2-Line to 1-Line Data Selectors/Multiplexers with 3-State Outputs
Quad 2-Line to 1-Line Data Selectors/Multiplexers with 3-State Outputs
8-Bit Addressable Latches
Quad Exclusive-NOR Gatges with Open-Drain Outputs
Octal D-Type Filp-Flops
9-Bit Parity Generators/Checkers with Clear
8-Bit Universal Shift/Storage Registers with 3-State Outputs
a-Bit Shift Registers with Sign Extend
Dual 4-Line to 1-Line Data Selectors/Multiplexers
Dual 1 of 4 Data Selectors/Multiplexers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Octal D-Type Transparent Latches with 3-State Outputs
Octal D-Type Flip-Flops with 3-State Outputs
Octal D-Type Flip-Flops with Clock Enable
Dual 4-Bit Decade Counters
Dual 4-Bit Binary Counters
Quad 2-Port Registers
Dual Retriggerable Monostable Multivibrators
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
8-Bit Identity Comparators
8-Bit Identity Comparators
8-Bit Identity Comparators
a-Bit Identity Comparators
8-Bit Identity Comparators
Octal D-Type Transparent Latches with 3-State Outputs
Octal D-Type Flip-Flops with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs

c8SAMSUNG
Electronics

14

HIGH SPEED
CMOS LOGIC ·ICs

FUNCTION GUIDE

KS54174AHCT Family (continued)
Device
KS54174A HCT541
KS54/74AHCT563
KS54/74A HCT564
KS54/74AHCT573
KS54/7 4AHCT~7 4
KS54/74AHCT590
KS54/74AHCT591
KS54/74AHCT592
KS54/74AHCT593
KS54/74AHCT595
KS54/74AHCT596
KS54/74AH CT597
KS54/74AHCT640
KS54/74AHCT643
KS54/74AHCT645
KS54/74AHCT646
KS54/74AHCT648
KS54/74AHCT651
KS54/74AHCT652
KS54/74AHCT658
KS54/74AHCT659
KS54/74AHCT664
KS54/74AHCT665
KS54/74AHCT670
KS54/74AHCT679
KS54174AH CT680
KS54/74AH CT682
KS54/74AHCT684
KS54/74AHCT686
KS54/74AHCT688
KS54/74AHCT689
KS54/74AHCT793
KS54/74AHCT794
KS54/74AHCT821
KS54/74AHCT822
KS54/74AHCT823
KS54/74AHCT824
KS54/74AHCT825
KS54/74AHCT826
KS54/74AHCT841
KS54/74AHCT842
KS54174AHCT843
KS54/74AHCT844
KS54/74AHCT845
KS54/74AHCT846
KS54/7 4AHCT4049
KS54/7 4AHCT4050

Function
Octal Buffers and Line Drivers with 3-State Outputs
Octal OoType Transparent Latches with 3-State Outputs
Octal OoType Flip-Flops with 3-State Outputs
Octal OoType Transparent Latches with 3-State Outputs
Octal OoType Flip-Flops with 3-State Outputs
8-Bit Binary Counters with 3-State Output Register
8-Bit Binary Counters with 3-State Output Register
8-Bit Binary Counters with Input Register
8-Bit Binary Counters with Bidirectional Input Register Counter Output
8-Bit Shift Registers with Output Latches
8-Bit Shift Registers with Output Latches
8-Bit Shift Registers with Input Latches
Octal Bus Transceivers with 3-State Outputs
Octal Bus Transceivers with 3-State Outputs
Octal Bus Transceivers with 3-State Outputs
Octal 3-State Bus Transceivers with Registers
Octal 3-State Bus Transceivers with Registers
Octal 3-State Bus Transceivers with Registers
Octal 3-State Bus Transceivers with Registers
Octal Bus Transceivers with Parity
Octal Bus Transceivers with Parity
Octal Bus Transceivers with Parity
Octal Bus Transceivers with Parity
4-By-4 Register Files with 3-State Outputs
12-Bit Address Comparators
12-Bit Address Comparators
8-Bit Magnitude Comparators
8-Bit Magnitude Comparators
8-Bit Magnitude Comparators
8-Bit Identity Comparators
8-Bit Identity Comparators with Open-Drain Outputs
Octal Latches with Readback
Octal Registers with Readback
10-Bit Bus Interface Registers with 3-State Outputs
10-Bit Bus Interface Registers with 3-State Outputs
9-Bit Bus Interface Registers with 3-State Outputs
9-Bit Bus Interface Registers with 3-State Outputs
8-Bit Bus Interface Registers with 3-State Outputs
8-Bit Bus Interface Registers with 3-State Outputs
10-Bit Bus Interface OoType Latches with 3-State Outputs
10-Bit Bus Interface OoType Latches with 3-State Outputs
9-Bit Bus Interface OoType Latches with 3-State Outputs
9-Bit Bus Interface OoType Latches with 3-State Outputs
8-Bit Bus Interface OoType Latches with 3-State Outputs
8-Bit Bus Interface OoType Latches with 3-State Outputs
' Hex Inverting Logic Level Down Converters
Hex Logic Level Down Converters

. c8SAMSUNG
Electronics

II

15

HIGH SPEED
CMOS LOGIC ICs
2) KS54174HCTLS Family

(continued)
Function

Device
KS54/7 4H CTLSOO
KS54/74 H CTLS01
KS54/74 H CTLS02
KS54/74 H CTLS03
KS54/74HCTLS04
KS54/74HCTLS05
KS54/74HCTLS08
KS54/7 4H CTLS09
KS54/74HCTLS10
KS54/74HCTLS11
KS54/74HCTLS12
KS54/74HCTLS14
KS54/74HCTLS20
KS54/74HCTLS21
KS54/74HCTLS22
KS54/74HCTLS27
KS54/7 4H CTLS30
KS54/7 4H CTLS32
KS54/74HCTLS42
KS54/74HCTLS51
KS54/74HCTLS58
KS54/74HCTLS73A
KS54/74HCTLS74A
KS54/74HCTLS75
KS54/74HCTLS76A
KS54/74HCTLS77
KS54/74HCTLS78A
KS54/7 4H CTLS86
KS54/74HCTLS90
KS54/74HCTLS92
KS54/74HCTLS93
KS54/74HCTLS107A
KS54/74HCTLS109A
KS54/74HCTLS112A
KS54/74HCTLS123
KS54/74HCTLS125
KS54/74HCTLS126
KS54/74HCTLS132
KS54/74HCTLS133
KS54/74HCTLS138
KS54/74HCTLS139
KS54/7 4HCTLS 148
KS54/74HCTLS151
KS54/74HCTLS153
KS54/74HCTLS154
KS54/74HCTLS155
KS54/74HCTLS157
KS54/74HCTLS158
KS54/74HCTLS160A
KS54/74HCTLS161A
KS54/74HCTLS162A
KS54/74HCTLS163A
KS54/74HCTLS164
KS54/74HCTLS165
KS54/74HCTLS166
KS54/74HCTLS168

Quad 2-lnput NAND Gates
Quad 2-lnput NAND Gates with Open-Drain OutPl4ts
Quad 2-lnput NOR Gates
Quad 2-lnput NAND Gates with Open-Drain Outputs
Hex Inverters
Hex Inverters with Open-Drain Outputs
Quad 2-lnput AND Gates
Quad 2-lnput AN D Gates with Open-Drain Outputs
Triple 3-lnput NAND Gates
Triple 3-lnput AND Gates
Triple 3-lnput NAND Gates with Open-Drain Outputs
Hex Schmitt-Trigger Inverters
Dual 4-lnput NAND Gates
Dual 4-lnput AND Gates
Dual 4-lnput NAND Gates with Open-Drain Outputs
Triple 3-lnput NOR Gates
8-lnput NAND Gate
Quad 2-lnput OR Gates
BCD-to-Decimal Decoder
Dual AND-OR-Invert Gates
Dual AND-OR Gates
Dual J-K Negative-Edge-Triggered Filp-Flops with Clear
Dual D-Type Positive-Edge-Triggered Filp-Flops with Preset and Clear
Quad Bistable Transparent Latches
Dual J-K Ne~ative-Edge-Triggered Filp Flops with Preset and Clear
Quad D-Type Latches
Dual J-K Negative-Edge-Triggered Filp-Flops with Preset, Common Clear and
Common Clock
Quad 2-lnput Exclusive-OR Gates
Decade Counters
Divide-by-Twelve Counter
4 Bit Binary Counter Divide by Two and Divide by Eight
Dual J-!S Negative·Edge-Triggered Filp-Flops with Clear
Dual J-K Positive-Edge-Triggered Filp-Flops with Preset and Clear
Dual J-K Negative-Edge-Triggered Filp-Flops with Preset and Clear
Dual Retriggerable Monostable Multivibrators
Quad Buffers with 3-State Outputs
Quad Buffers with 3-State Outputs
Quad 2-lnput NAND Gates with Schmitt-Trigger Inputs
13-lnput NAND Gate
3-Line to 8-Line Decoders/Demultiplexers
Dual 1 of 4 Decoders/Demultiplexers
8-Line to 3-Line Priority Encoders
1 of 8 Data Selectors/Multiplexers
Dual 1 of 4 Data Selectors/Multiplexers
4-Line to 16-Line Decoders/Demultiplexers
Dual 2 to 4 Line Decoders/Demultiplexers
Quad 2-Line to 1-Line Data Selectors/Multiplexers
Quad 2-Line to 1-Line Data Selectors/Multiplexers
Synchronous 4-Bit Decade Counters
Synchronous 4-Bit Binary Counters
Synchronous 4-Bit Decade Courters
Synchronous 4-Bit Binary Counters
8-Bit Serial-In/Paralle-Out Shift Registers
8-Bit Parallel-In/Serial-Out Shift Registers
8-Bit Parallel-In/Serial-Out Shift Registers with Clear
Synchronous 4-Bit Up/Down Decade Counters

c8SAMSUNG
Electronics
.

16

HIGH SPEED
CMOS LOGIC ICs

FUNcnON GUIDE

KS54174HCTLS Family (continued)
Device
KS54/74 HCTLS 169
KS54/7 4H CTLS 173
KS54/74HCTLS174
KS54/74HCTLS175
KS54/74HCTLS181
KS54/74HCTLS182
KS54/74HCTLS183
KS54/74HCTLS190
KS54/74HCTLS191
KS54/74HCTLS192
KS54/74HCTLS193
KS54/74HCTLS194
KS54/74HCTLS195
KS54/74HCTLS210
KS54/74HCTLS238
KS54/74HCTLS239
KS54/74HCTLS240
KS54/74HCTLS241
KS54/74HCTLS242
KS54/74HCTLS243
KS54/74HCTLS244
KS54/74HCTLS245
KS54/74HCTLS251
KS54/74HCTLS253
KS54/74HCTLS257
KS54/74HCTLS258
KS54/74HCTLS259
KS54/74HCTLS266
KS54/74HCTLS273
KS54/7 4H CTLS280
KS54/74HCTLS299 A
KS54/74HCTLS322
KS54/74HCTLS352
KS54/74HCTLS353
KS54/74HCTLS365A
KS54/74HCTLS366A
KS54/74HCTLS367A
KS54/74HCTLS368A
KS54/74HCTLS373
KS54/74HCTLS374
KS54/74HCTLS377
KS54/74HCTLS390
KS54/74HCTLS393
KS54/74HCTLS399
KS54/74HCTLS423
KS54/74HCTLS465
KS54/74HCTLS466
KS54/74HCTLS467
KS54/74HCTLS468
KS54/74HCTLS518
KS54/74HCTLS519
KS54/74HCTLS520
KS54/74HCTLS521
KS54/74HCTLS522
KS54/74HCTLS533
KS54/7 4H CTLS534
KS54/74HCTLS540
KS54/74HCTLS541

Function
Synchronous 4-Bit Up/Down Binary Counters
4-Bit D-Type Registers with 3-State Outputs
Hex D-Type Filp-Flops with Clear
Quad D-Type Filp-Flops with Clear
4-Bit Arithmetic Logic Unit
Look-Ahead Carry Generator
Dual High Speed Adder
Presettable Synchronous BCD Decade Up/Down Counter
Synchronous 4-Bit Up/Down Binary Counters
Presettable Synchronous BCD Decade Up/Down Counter
Synchronous 4-Bit UplDown Binary Counters with Dual Clock
4-Bit Bidirectional Universal Shift Registers
4-Bit Bidirectional Universal Shift Registers
Octal Buffers and Line Drivers with 3-State Outputs
3-Line to 8-Line Decoders/Demultiplexers
Dual 1-of-4 Decoders/Demultiplexers
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Quad Bus Transceivers with 3-State Outputs
Quad Bus Transceivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Bus Transceivers with 3-State Outputs
1 of 8 Data Selectors/Multiplexers with 3-State Outputs
Dual 1 of 4 Data Selectors/Multiplexers with 3-State Outputs
Quad 2-Line to 1-Line Data Selectors/Multiplexers with 3-State Outputs
Quad 2-Line to 1-Line Data Selectors/Multiplexers with 3-State Outputs
8-Bit Addressable Latches
Quad Exclusive-NOR Gatges with Open-Drain Outputs
Octal D-Type Filp-Flops
9-Bit Parity Generators/Checkers with Clear
8-Bit Universal Shift/Storage Registers with 3-State Outputs
8-Bit Shift Registers with Sign Extend
Dual 4-Line to 1-Line Data Selectors/Multiplexers
Dual 1 of 4 Data Selectors/Multiplexers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Octal D-Type Transparent Latches with 3-State Outputs
Octal D-Type Flip-Flops with 3-State Outputs
Octal D-Type Flip-Flops with Clock Enable
Dual 4-Bit Decade Counters
Dual 4-Bit Binary Counters
Quad 2-Port Registers
Dual Retriggerable Monostable Multivibrators
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
8-Bit Identity Comparators
8-Bit Identity Comparators
8-Bit Identity Comparators
8-Bit Identity Comparators
8-Bit Identity Comparators
Octal D-Type Transparent Latches with 3-State Outputs
Octal D-Type Flip-Flops with 3-State Outputs
Octal Buffers and Une Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs

I

17

HI~H SPEED
.
CMOS. LOGIC ICs

FUNCTION GUIDE

KS54174HCTLS Family (continued)
Function

Device
KS54/74H CTLS563
KS54/7 4H CTLS564
KS54f74HCTLS573
KS54f74HCTLS574
KS54f74HCTLS590
KS54f74HCTLS591
KS54f74HCTLS592
KS54f74HCTLS593
KS54f74HCTLS595
KS54f74HCTLS596
KS54f74HCTLS597
KS54f74HCTLS640
KS54/74HCTLS643
KS54f74HCTLS645
KS54174HCTLS646
KS54f74HCTLS648
KS54f74HCTLS651
KS54f74HCTLS652
KS54f74HCTLS658
KS54f74HCTLS659
KS54/74HCTLS664
KS54f74HCTLS665
KS54f74HCTLS670
KS54f74HCTLS679
KS54f74HCTLS680
KS54f74HCTLS682
KS54f74HCTLS684
KS54f74HCTLS686
KS54f74HCTLS688
KS54f74HCTLS689
KS54f74HCTLS793
KS54f74HCTLS794
KS54f74HCTLS821
KS54f74HCTLS822
KS54/74HCTLS823
KS54/74HCTLS824
KS54/74HCTLS825
KS54/74HCTLS826
KS54/7 4~· CTLS841
KS54/74HCTLS842
KS54/74HCTLS843
KS54/74HCTLS844
KS54/74HCTLS845
KS54/74HCTLS846
KS54/74HCTLS4049
KS54/74HCTLS4050

Octal OoType Transparent Latches with 3-State Outputs
Octal OoType Flip-Flops with 3-State Outputs
Octal OoType Transparent Latches with 3-State Outputs
Octal OoType Flip-Flops with 3-State Outputs
8-Bit Binary Counters with 3-State Output Register
8-Bit Binary Counters with 3-State Output Register
8-Bit Binary Counters with Input Register
8-Bit Binary Counters with Bidirectional Input Register Counter Output
8-Bit Shift Registers with Output Latches
8-Bit Shift Registers with Output Latches
8-Bit Shift Registers with Input Latches
Octal Bus Transceivers with 3-State Outputs
Octal Bus Transceivers with 3-State Outputs
Octal Bus Transceivers with 3-State Outputs
Octal 3-State Bus Transceivers with Registers
Octal 3-State Bus Tr.ansceivers with Registers
Octal 3-State Bus Transceivers with Registers
Octal 3-State Bus Transceivers with Registers
Octal Bus Transceivers with Parity
Octal Bus Transceivers with Parity
Octal Bus Transceivers with Parity
Octal Bus Transceivers with Parity
4-By-4 Register Files with 3-State Outputs
12-Bit Address Comparators
12-Bit Address Comparators
8-Bit Magnitude Comparators
8-Bit Magnitude Comparators
8-Bit Magnitude Comparators
8-Bit Identity Comparators
8-Bit Identity Comparators with Open-Drain Outputs
Octal Latches with Readback
Octal Regi.sters with Readback
10-Bit Bus Interface Registers with 3-State Outputs
10~Bit Bus Interface Registers with 3-State Outputs
9-Bit Bus Interface Registers with 3-State Outputs
9-Bit Bus Interface Registers with 3-State Outputs
8-Bit Bus Interface Registers with 3-State Outputs
8-Bit Bus Interface Registers with 3-State Outputs
10-Bit Bus Interface OoType Latches with 3-State Outputs
10-Bit Bus Interface OoType Latches with 3-State Outputs
9-Bit Bus Interface OoType Latches with 3-State Outputs
9-Bit Bus Interface OoType Latches with 3-State Outputs
8-Bit Bus Interface OoType Latches with 3-State Outputs
8-Bit Bus Interface OoType Latches with 3-State Outputs
Hex Inverting Logic Level Down Converters
Hex Logic Level Down Converters

c8SAMSUNG
Electronics

18

HIGH SPEED
CMOS LOGIC ICs

FUNCTION GUIDE

2. Functional Selection Guide
Function
Gates and
Inverters

Buffers
and
Line
Drivers

Level
Shifters
Flip-Flops

Part Number
KS54174AHCT
KS54174HCTLS
00
01
02
03
04
05
08
09
10
11
12
14
20
21
22
27
30
32
51
58
86
132
133
266
125
126
210
240
241
244
365
366
367
368
465
466
467
468
540
541
4049
4050
73
74
76
78
107
109
112
173
174
175
273
374

Description
Quad 2-lnput NAND Gates
Quad 2-lnput NAND Gates with Open-Drain Outputs
Quad 2-lnput NOR Gates
Quad 2-lnput NAND Gates with Open-Drain Outputs
Hex Inverters
Hex Inverters with Open-Drain Outputs
Quad 2-lnput AND Gates
Quad 2-lnput AND Gates with Open-Drain Outputs
Triple 3-lnput NAND Gates
Triple 3-lnput AND Gates
Triple 3-lnput NAND Gates with Open-Drain Outputs
Hex Schmitt-Trigger Inverters
Dual 4-lnput NAND Gates
Dual 4-lnput AND Gates
Dual 4-lnput NAND Gates with Open-Drain Outputs
Triple 3-lnput NOR Gates
8-lnput NAND Gate
Quad 2-lnput OR Gates
Dual AND-OR-Invert Gates
Dual AND-OR Gates
Quad 2-lnput Exclusive-OR Gates
Quad 2-lnput NAND Gates with Schmitt-Trigger Inputs
13-lnput NAND Gate
Quad Exclusive-NOR Gatges with Open-Drain Outputs

14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
16
16

DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP

Quad Buffers with 3-State Outputs
Quad Buffers. with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Hex Bus-Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Octal Buffers and Line Drivers with 3-State Outputs
Hex Inverting Logic Level Down Converters
Hex Logic Level Down Converters
Dual J-K Negative-Edge-Triggered Filp-Flops with Clear
Dual D-Type Positive-Edge-Triggered Filp-Flops with Preset and Clear
Dual J-K Negative-Edge:Triggered Filp Flops with Preset and Clear
Dual J-K Negative-Edge-Triggered Filp-Flops with Preset,
Common Clear and Common Clock
Dual J-.!S Negative-Edge-Triggered Filp-Flops with Clear
Dual J-K Positive-Edge-Triggered Filp-Flops with Preset and Clear
Dual J-K Negative-Edge-Triggered Filp-Flops with Preset and Clear
4-Bit D-Type Registers with 3-State Outputs
Hex D-Type Filp-Flops with Clear
Quad D-Type Filp-Flops with Clear
Octal D-Type Filp-Flops
Octal D-Type Flip-Flops with 3-State Outputs

14
14
20
20
20
20
16
16
16
16
20
20
20
20
20
20
16
16
14
14
16

DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP

14
14
16
16
16
16
16
20
20

DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP·

c8SAMSUNG
Elp-ctronics

Package

19

a

HIGH SPEED
CMOS LOGIC ICs
Functional Selection Guide
Function

Latches

Multiplexers

Shift
Registers

Transceivers

(continued)

Part Number
KS54/74AHCT
KS54/74H cns

Description

Package

377
399
534
564
574
670
794
821
822
823
824
825
826
75
77
259
373
533
563
573
793
841
842
843
844
845
846
151
153
157
158
251
253
257
258
352
353
164
165
166
194
195
299
322
595
596
597

Octal D-Type Flip-Flops with Clock Enable
Quad 2-Port Registers
Octal D-Type Flip-Flops with 3-State Outputs
Octal D-Type Flip-Flops with 3-State Outputs
Octal D-Type Flip-Flops with 3-State Outputs
4-By-4 Register Files with 3-State Outputs
Octal Registers with Readback
10-Bit Bus Interface Registers with 3-State Outputs
10-Bit Bus Interface Registers with 3-State Outputs
9-Bit Bus Interface Registers with 3-State Outputs
9-Bit Bus Interface Registers with 3-State Outputs
8-Bit Bus Interface Registers with 3-State Outputs
8-Bit Bus Interface Registers with 3-State Outputs
Quad Bistable Transparent Latches
Quad D-Type Latches
8-Bit Addressable Latches
Octal D-Type Transparent Latches with 3-State Outputs
Octal D-Type Transparent Latches with 3-State Outputs
Octal D-Type Transparent Latches with 3-State Outputs
Octal D-Type Transparent Latches with 3-State Outputs
Octal Latches with Readback
10-Bit BuS Interface D-Type Latches with 3-State Outputs
10-Bit Bus Interface D-Type Latches with 3-State Outputs
9-Bit Bus Interface D-Type Latches with 3-State Outputs
9-Bit Bus Interface D-Type L~tches with 3-State Outputs
8-Bit Bus Interface D-Type LatchEls with 3-State Outputs
8-Bit Bus Interface D-Type Latches with 3-State Outputs
1 of 8 Data Selectors/Multiplexers
Dual 1 of 4 Data Selectors/Multiplexers
Quad 2-Line to 1-Line Data Selectors/Multiplexers
Quad 2-Line to 1-Line Data Selectors/Multiplexers
1 of 8 Data Selectors/Multiplexers with 3-State Outputs
Dual 1 of 4 Data Selectors/Multiplexers with 3-State Outputs
Quad 2-Line to 1"-Line Data Selectors/Multiplexers with 3-State Outputs
Quad 2-Line to 1-Line Data Selectors/Multiplexers with 3-State Outputs
Dual 4-Line to 1-Line Data Selectors/Multiplexers
Dual 1 of 4 Data Selectors/Multiplexers with 3-State Outputs
8-Bit Serial-In/Paralle-Out Shift Registers
8-Bit Parailel-In/Serial-Out Shift Registers
8-Bit Parallel-In/Serial-Out Shift Registers with Clear
4-Bit Bidirectional Universal Shift Registers
4-Bit Bidirectional Universal Shift Registers
8-Bit Universal Shift/Storage Registers with 3-State Outputs
8-Bit Shift Registers with Sign Extend
8-Bit Shift Registers with Output Latches
8-Bit Shift Registers with Output Latches
8-Bit Shift Registers with Input Latches

20 DIP/SOP
16 DIP/SOP
20 DIP/SOP
20 DIP/SOP
20 DIP/SOP
16 DIP/SOP
20 DIP/SOP
24 DIP/SOP
24 DIP/SOP
24 DIP/SOP
24 DIP/SOP
24 DIP/SOP
24 DIP/SOP
16 DIP/SOP
14 DIP/SOP
16 DIP/SOP
20 DIP/SOP
20 DIP/SOP
20 DIP/SOP
20 DIP/SOP
20 DIP/SOP
24 DIP/SOP
24 DIP/SOP
24 DIP/SOP
24 DIP/SOP
24 DIP/SOP
24 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP
14 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP
20 DIP/SOP
20 DIP/SOP
16 DIP/SOP
16 DIP/SOP
16 DIP/SOP

242
243
245
640
643
645
646
648

Quad
Quad
Octal
Octal
Octal
Octal
Octal
Octal

14
14
20
20
20
20
24
24

/

·qsSAMSUNG
Electronics

FUNCTION GUIDE

Bus Transceivers with 3-State
Bus Transceivers with 3-State
Bus Transceivers with 3-State
Bus Transceivers with 3-State
Bus Transceivers with 3-State
Bus Transceivers with 3-State
3-State Bus Transceivers with
3-State Bus Transceivers with

Outputs
Outputs
Outputs
Outputs
Outputs
Outputs
Registers
Registers

I

DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP

20

HIGH SPEED
CMOS LOGIC ICs

FUNCTION GUIDE

Functional Selection Guide (continued)

Function

Counters

Decoders
Encoders

Multivibrators
Arithmetic
Circuits

Part Number
KS54/74AHCT
KS54/74H CTLS

651
652
658
659
664
665
90
92
93
160
161
162
163
168
169
190
191
192
193
390
393
590
591
592
593
42
138
139
148
154
155
238
239
123
423
181
182
183
280
518
519
520
521
522
679
680
682
684
686
688
689

Description

Octal 3-State Bus Transceivers with Registers
Octal 3-State Bus Transceivers with Registers
Octal Bus Transceivers with Parity
Octal Bus Transceivers with Parity
Octal Bus Transceivers with Parity
Octal Bus Transceivers with Parity
Decade Counters
Divide-by-Twelve Counter
4 Bit Binary Counter Divide by Two and Divide by Eight
Synchronous 4-Bit Decade Counters
Synchronous 4-Bit Binary Counters
Synchronous 4-Bit Decade Counters
Synchronous 4-Bit Binary Counters
Synchronous 4-Bit Up/Down Decade Counters
Synchronous 4-Bit Up/Down Binary Counters
Presettable Synchronous BCD Decade Up/Down Counter
Synchronous 4-Bit Up/Down Binary Counters
Presettable Synchronous BCD Decade Up/Down Counter
Synchronous 4-Bit Up/Down Binary Counters with Dual Clock
Dual 4-Bit Decade Counters
Dual 4-Bit Binary Counters
8-Bit Binary Counters with 3-State Output Register
8-Bit Binary Counters with 3-State Output Register
8-Bit Binary Counters with Input Register
8-Bit Binary Counters with Bidirectional Input Register Counter Output
BCD-to-Decimal Decoder
3-Line to 8-Line Decoders/Demultiplexers
Dual 1 of 4 Decoders/Demultiplexers
8-Line to 3-Line Priority Encoders
4-Line to 16-Line Decoders/Demultiplexers
Dual 2 to 4 Line Decoders/Demultiplexers
3-Line to 8-Line Decoders/Demultiplexers
Dual 1-of-4 Decoders/Demultiplexers
Dual Retriggerable Monostable Multivibrators
Dual Retriggerable Monostable Multivibrators
4-Bit Arithmetic Logic Unit
Look-Ahead Carry Generator
Dual High Speed Adder
9-Bit Parity Generators/Checkers with Clear
8-Bit Identity Comparators
8-Bit Identity Comparators
8-Bit Identity Comparators
8-Bit Identity Comparators
8-Bit Identity Comparators
12-Bit Address Comparators
12-Bit Address Comparators
8-Bit Magnitude Comparators
8-Bit Magnitude Comparators
8-Bit Magnitude Comparators
8-Bit Identity Comparators
8-Bit Identity Comparators with Open-Drain Outputs

c8SAMSUNG
Electronics

Package

24
24
24
24
24
24
14
14
14
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
20
16
16
16
16
24
16
16
16
16
16
24
16
14
14
20
20
20
20
20
20
20
20
20
20
20
20

DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DI P/SOP')
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP
DIP/SOP

21

II

NOTES

,

.~

.

PAR:A,METeR MEASUREMENT INFORMATION
AC SWITCHING TEST CIRCUITS
Totem-Pole Outputs
Vee

DEVICE
UNDER

INPUT

TEST

• CL includes load and test jig capacitance

3-State Outputs

Sf

Vee

DEVICE
UNDER

INPUT

TEST

* CL Includes load and test jig capacitance
Vcc for tPZL and tpLZ measurements
S = GND for tPZH and !PHZ measurements.

st =

Open-Drain Outputs
Vee

DEVICE
INPUT

UNDER
TEST

• CL includes load and test jig capacitance

."
CasSAMSUNG
Electronics

25

PARAMETER MEASUREMENT INFORMATION
TIMING WAVEFORMS

INPUT

--I:'

Propagation Delays

~1~3~ -

1.3V

- lpLH

_ lpHL

-

~

I

IN-PHASE

- -- - - - - - ::
_

I

I

~VOH

11.3V

OUTPUT
I

I

I

I

\1.3V

OUT·OF·PHASE
OUTPUT

VOL

- lpLH ~

-IPHL-:

•

~

V

•

VOL

OH

Setup & Hold Times, Input Rise & Fall Times

-: rio

~ ~t.

2. 7Vl.J------2-.-7v~i.II:° ~ - - - - -- O.3V
1.3V
.V\.--

REFERENCE
INPUT

t.,~.3

o

r-t.ul

2.7V :rt,~O.3V:':

!/'

DATA _2:..:'V
INPUT ~ 1.3V
-- '"-I,

~.;; -- ---

-0 ....

Input Pulse Width
POSITIVE
INPUT _ _ _ _

I'------~-

..Jf 1.3V

3V
ov

3V
ov

If

------

~

I--- Iw - - - -

PULSE

N E G A T I V E - Iw- - - - '
INPUT
\1.3V
PULSE

~

3V
OV
3V
OV

Enable & Disable Time for 3-State Outputs
OUTPUT CONTROL
(Low·level enabling)

OUTPUT
WAVEFORM 1*

\1.3V

OUTPUT _ _ _ _ _,
WAVEFORM 2*

1.3V

* Waveform 1 is for an Qutput with internal conditions such that the output is low except when disabled
by the output control. This waveform is applicable to both 3-state and open-drain outputs.
* Waveform 2 is for an output with internal conditions such that the output is high except when disabled
by the output control.

=8SAMSUNG
Electrbnics

26

PARAMETER MEASUREMENT INFORMATION
DEFINITIONS OF TERMS & SYMBOLS

FUNCTION TABLE SYMBOLS
H

Steady state high level

L

Steady state low level

t
+

Transition from low to high level
Transition from high to low level

X

Don't care (high, low states or transitions)

Z

High-impedance state of a 3-state output

a .. h

I

The level of steady-state inputs at inputs A thru H, respectively

00

Level of 0 before the indicated steady-state input conditions were established

00

Complement of 0 0 or level of Q before the indicated steady-state conditions were established

On

Level of 0 before the most recent active transition indicated by t or

+

I i = One high-level pulse

-u =
TOGGLE· =

One low-level pulse
each output changes to the complement of its previous level on each active transition indicated by

t or +

If, in the input columns, a row contains only the symbols H, L, and/or X, this means the indicated output is valid whenever
the input configuration is achieved and regardless of the sequence in which it is achieved. The output persists so long as
the input configuration is maintained.
If, in the input columns, a row contains H, L, and/or X together with t and/or t, this means the output is valid whenever
the input configuration is achieved but the transition(s) must occur following the achievement of the steady-state levels.
If the output is shown as level (H, L, 0 0 , or 0 0 ). it persists so long as the steady-state input levels and the levels that terminate indicated transitions are maintained. Unless otherwise indicated, input transitions in the oppOSite direction to those
orU, the pulse follows the indicated input transishown have no effect at the output. (If the output is shown as pulse,
tion and persists for an interval dependent on the circuit)

n

DC Characteristics Terms
VIH

High-Level input. voltage

An Input voltage within the more positive (less negative) of the two ranges of values used to represent the binary
variables. A minimum is specified that is the least-positive value of high-level input voltage f.or which operation of the
logic element within specification limits is guaranteed.
VIL

Low-Level input voltage

An input voltage level within the less positive (more negative) of the two ranges of values used to represent the binary
variables. A maximum is specified that is the most-postive value of low-level input voltage for which operation of the
logic element within specification limits is guaranteed.
VOH

High-Level output voltage

The voltage at an output terminal with input conditions applied that, according to product specification, will establish
a high level at the output.
VOL

Low-Level output voltage

The voltage at an output terminal with input conditions applied that, according to product specification, will establish
a low level at the output.
VT+

Positive-Going threshold level

The voltage level at a tranSition-operated input that causes operation of the logic element according to specification
as the input voltage rises from a level below the negative-going threshold voltage, VT -.

c8SAMSUNG
Electronics
'

27

PARAMETER MEASUREMENT INFORMATION
VT-

Negative-Going threshold level
The voltage at a transition-operated input that causes operation of the logic element according to specification as
the input voltage falls from a level above the positive-going threshold voltage, VT +.

10

Output Current
The current into· an output with input conditions applied that, according to the product specification, will establish
a high or a low level at the output.

liN

Input CurentThe current into * an input when a high or a low level voltage is applied to that input.

101

Off-State (high-Impedance-state) output current (of a three-state output)
The current flowing into· an output having three-state capability with input conditions established that, according
to the product specification, will establish the high-impedance state at the output level voltage applied to the output.
This parameter is measured with other input conditions established that would cause the output. to be at a low-voltage
level (if it were enabled) when the externally applied voltage is high; or high-voltage level when the externally applied
voltage is low.

Icc

Supply current
The current into· the Vcc supply terminal of an integrated circuit.

'Current out of a terminal Is given as negative value.

AC CHARACTERISTICS TERMS
tr

Rise time
The time interval between two reference points (10% and 90% unless otherwise specified) on a waveform that is
changing from the defined low level to the high level.

tf

Fall time
The time interval between two reference pOints (90% and 10% unless otherwise specified) on a waveform that is
changing from the defined high level to the defined low level.
.

f max

Maximum clock frequency
The highest rate at which the cock input of a bistable circuit can be driven through its required sequence while main~
taining stable transitions of a logic level at the output with input conditions established that should cause changes
of output logiC level in accordance with the specification.

tpLH

Propagation delay time, low-to-hlgh-Ievel output
The time between the specified reference pOints on the input and output voltage waveforms with the output changing
from the defined low level to the defined high level.

tPHL

Propagation delay time, hlgh-to-Iow-Ievel output
The time between the specified reference pOints on the input and output voltage waveforms with the output changing
from the defined high level to the defined low level.

tpIH

Enable time (of a three-state output) to high level
The time interval between the specified reference points on the input and output voltage waveforms with the threestate outputs changing from a high-impedance (off) state to the defined high level.

IpIl

Enable time (of a three-state output) to low level
The time interval between the specified reference points on the input and output voltage waveforms with the threestate outputs changing from a high-impedance (off) state to the defined low level.

c8SAMSUNG
Electronics

28

PARAMETER MEASUREMENT INFORMATION
tpHZ

Disable time (of a three-state output) from high level
The time interval between the specified reference pOints on the input and output voltage waveforms with the threestate outputs changing from the defined high level to high-impedance (off) state.

tpLZ

Disable time (of a three-state output) from low level
The time interval between the specified reference points on the input ana output voltage waveforms with the threestate outputs changing from the defined high level to high-impedance (off) state.

tw

Pulse width
The time interval between specified reference points on the leading and trailing edges of the pulse waveform.

tsu

Setup time
The time interval between the application of a signal at a specified input terminal and a subsequent active transition
at another specified input terminal.
NOTES: 1. The setup time is the actual time interval between two signal events and is determined by the system
in which the digital circuit operates. A minimum value is specified that is the shortest interval for which
correct operation of the digital circuit is guaranteed.
2. The setup time may have a negative value in which case the minimum limit defines the longest interval
(between the active transition and the application of the other signal) for which correct operation of the
digital circuit is guaranteed.

th

Hold time
The time interval during which a signal is retained at a specified input terminal after an active transition occurs at another
specified input terminal.
NOTES: 1. The hold time is the actual time interval between two signal events and is determined by the system
in which the digital circuit operates. A minimum value is specified that is the shortest interval for which
correct operation of the digital circuit is guaranteed.
2. The hold time may have a negative value in which case the minimum limit defines the longest interval (between the release of the signal and the active transition) for which correct operation of the digital circuit
is guaranteed.

CPO

Power dissipation capacitance
Used to determine the no-load dynamic power dissipation per logic function (see individual circuit pages):
= CPD VCC 2f
.

PD

29

NOTES

TECHNICAL OVERVIEW
INTRODUCTION
The 54/74AHCT Advanced High-Speed CMOS and the 54/74HCTLS High-Speed CMOS logic families were designed to
offer the most desirable features of their CMOS and bipolar predecessors. They have the low. power dissipation, superior
noise immunity, wide voltage and temperature ranges and the very low input currents of the other high-speed CMOS logic
families, in addition to the high speed and drive capability of LS and ALS bipolar logic.
The AHCT family is an equivalent of the bipolar ALS and can readily replace ALS in most existing applications to reduce power
dissipation. In many applications, AHCT parts can also be used as replacements for FASTTM and S (Schottky). The HCTLS
parts, on the other hand, meet and exceed all of industry-standard LS and HCT specifications, and can be used as replacements
to these to lower the power dissipation and improve performflnce. The design tips section on page 53 gives speCific details
for direct replacement. Figure 1 shows how AHCT and HCTLS families rank with the other bipolar technologies in terms
of speed and power dissipation.

100

II

80
LOW-POWER TIL
54/74L

~
>::sUJ

30

Q

Z

0

<

r-

.~

m
~

~

TECHNICAL OVERVIEW
The Samsung CMOS logic families include a comprehensive set of buffers, registers, latches and transceivers that are offered in 8, 9 and 1 O-bit versions. A wide variety of gates, f/ip4 flops, multiplexers, shift registers, encoder/deco~ers, schmitt
triggers and multivibrators complete the family of :157ipart types. Each function is available in both AHCT and HCTLS version.

Characteristic

Symbol

Conditions

Ta=25°C
Typ

Commercial
Military
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum
High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Minimum
Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vcc- 0 .1

Vcc- O. 1

CMOS loads
Minimum
High-Level
Output Voltage

VO H

VIN = VIH or VIL Standard Outputs
IOH=-4 mA
I--Bus-Driver Outputs
IOH=-6 rnA

VOL

VIN = VIH or VIL

V

4.2

3.98

3.84

3.7

4.2

3.98

3.84

3.7

0.1

0.1

0.1

0.1

Standard Outputs
IOL=4 mA
IOL=8 mA

0.2
0.3

0.26
0.39

0.33
0.5

0.4

Bus-Driver Outputs
IOL=12 mA
10L =24 mA

0.2
0.3

0.26
0.39

0.33
0.5

0.4

V

CMOS loads
IOL =20 /-IA
Minimum
Low-Level
Output Voltage

Vcc Vcc- 0 .1

IOH=-20/-iA

V

Maximum Input
Leakage Current

II

Vcc=Max, VIN=VCC or GND

±0.1

±1.0

1.0

/-I A

Maxinium 3-State
Leakage Current

loz

Vcc=Max, Enable=VIH or VIL
VOUT=VCC or GND

:1:0.5

*5.0

±10.0

/-I A

SSI Circuits

2.0

20.0

40.0

Dual and Quad
Flip-Flops & Latches

4.0

40.0

80.0

MSI Circuits &
Circuits with
High-Current Outputs

8.0

80.0

Maximum
Quiescent
. Supply Current

Icc

Vee = Max
VIN=VeC or
GND
All Outputs
Open

/-IA
160.0

FIGURE 3. DC characteristics of the 54/74AHCT and 54/74 HCTlS Families (Vcc=5.0V :!:10%)

c8SAMSUNG
CIft.I'+""'l"'Ioi,..~

35

I

TEC.HNICAL OVERVIEW
P~OCESSTECHNOLOGY
The high performance of the AHCT and HCTlS is a result of a unique self-aligned metal-gate CMOS process technology
that features 1.2101m effective gate lengths and double metallization. The following table compares the general characteristics
of this process with other existing CMOS and bipolar technologies used for logic circuits:

SAMSUNG CMOS

INDUSTRY CMOS (HC & HCT)

INDUSTRY ALS

Number of Masking Steps

8

12-14

13

Number of Metal Layers

2

1

2

2 101m

3-4 101m

4 101m

All Metal

Poly & Metal

All Metal

Minimum Feature Size (drawn)
Interconnections
Relative Die Size
Manufacturing Equipment

1X

2.5-5X

1.5-2X

Standard

Standard

Standard

Samsung's CMOS process was designed from the ground up to be a scaled two-layer metal CMOS process (see Figure
4 for a cross section). The goal was to make the process as simple as possible, and be able to readily control gate length
and gate dielectric thickness. The process uses 8 masking steps. Other semiconductor manufactures, in trying to go to
two-layer metal short-channel processes have generally embellished pre-existing silicon-gate processes and have wound
up with 12-14 masking steps. More masking steps, of course, make wafers more costly, but most importantly, reduce yield
because of more chances for random defects.

DIELECTRIC LAYERS

METAL LAYER 2

N-CHANNEL TRANSISTOR

METAL LAYER 1

P-CHANNEL TRANSISTOR

P-WELL

N-SUBSTRATE

FIGURE 4 .. Samsung CMOS process cross section for an inverter stage

The Samsung process, with the short 2 101m channel lengths (1.2 101m effective), yields gate delays as fast as those of the
bipolar lS and AlS processes, and the same short channel lengths allow high-current output drivers to occupy a modest
silicon area. Generally, the AHCT and HCTlS logic chips are much smaller than their CMOS and bipolar equivalents (see Figure
5). In achieving this small size, two-layer metal is as important as having short channels. For example, in the on-chip busing
of ground and Vcc to the output drivers, very wide metal lines have to be used that take considerable area. In this case,
if these lines are in Metal 2, no extra area is wasted since the circuitry can be placed underneath.

c8SAMSUNG·
Electronics

36

TECHNICAL OVERVIEW

2.57X

MM74HC240
National Semiconductor

1.42X

74F240
Fairchild

1.S7X

SN74ALS240
Texas Instruments

II

1X

KS74AHCT240
KS74HCTLS240
Samsung

FIGURE 5. Die size compar ison for a 74XXX244 from various technologies.

INPUT CHARACTERISITICS
The input stage of an AHCT or HCTLS circuit is illustrated in Figure 6. It consists of a diode protection network and a CMOS
inverter stage that has very high input impedance. The ultra-low input current specified in the data sheets (1 ",A maximum) is
due to the reverse leakage currents of the diodes and is not used for "driving" the CMOS transistors i.e. the inputs are
voltage-driven. This makes AHCT and HCTLS inputs very easy to drive and results in a very high fan-in capability.
TTL-compatible input threshold voltages of O.8V VIL and 2.0V VIH are accomplished by properly sizing the p- and n-channel
transistors of the CMOS inverter stage. The actual logic transition takes place mid-way between these values, at 1.4V, and
is very sharp compared to TTL logic due to the very high gain of the first inverter stage. This is illustrated in Figure 7 for
a two-input NAND gate. Note that the input threshold for CMOS is much more stable with temperature than that for LS.
While the AHCT and HCTLS parts are recommended as direct replacements for ALS and LS, one needs to pay attention
to not leaving any inputs floating, i.e. unconnected. Since the inputs have very high impedance, they can easily pick up
external noise which can result in random switching of the device and high power consumption. Therefore, all unused inputs
must be terminated to either Vce or ground.

c8SAMSUNG
Electronics

37

TECHNICAL OVERVIEW

Vee

P

Input o---+---~'----..---"
Pin

FIGURE 6. The input circuit of AHCT and HCTlS parts.

--....-'!. . .-;---;---r--,---.

5.0 ...

5.0

V~e=5.0V

4. 0 1 - - - - t - 1 f H - - i - - - - - 1 i - - - - - 1 - - - - I
J.- Taj125°C

~
~

~

~

~ 3.0

~
~

f:J

§

4.0
UJ

j.-Taj25°C
3.01----+-IHt:::o:I' Ta= -55°C -+----+---~

~ 2.

2.0

5

1.01----+--'1-H--+----+----1-------I

V~e=5.0V

~

,1\
-~

T.=125°C
T.==25°C

l-rT.=-~5°C

1. 0

I
1.0

2.0

3.0

INPUT VOLTAGE

{al

3.0

5.0

1.0

2.0

3.0

5.0

INPUT VOLTAGE

(bl

FIGURE 7. Input-Output transfer characteristics for {a) AHCT/HCTLSOO, (b) LSOO.

c8SAMSUNG
Electronics

38

TECHNICAL OVERVIEW
OUTPUT CHARACTERISTICS
A typical output stage of an AHCT or HCTlS part consists of a complementary pair of transistors and a diode protection
network (see Figure 8). Unlike the bipolar outputs, the voltage swing is rail-to-rail, which is responsible for the improved
noise margine of AHCT/HCTlS systems. The drive capability of these outputs is similar to the bipolar parts, i.e. 24mA or
8mA 10L (at 0.5V Vod for bus-driver and standard outputs, respectively. This meanS that AHCT and HCTlS parts can drive
as many loads or as large bus capacitances as their ALS and lS counterparts. Figure. 9 shows a comparison of the output
drive capabilities of AHCTIHCTlS and lSI ALS outputs. Figure 10 illustrates the variations of 10L and IoH with supply voltage
and temperature for a standard output ('00) and a bus driver ('244).
vee

t----....----<)

II

OUTPUT PIN

FIGURE 8. A typical output circuit of an AHCT or HCTLS part.
The upper diode is parasitic and embedded in the p-channel transistor.

0

.s« -10

70
T.=25°C
Vee=5V

60

«

I-

.s

Z

w
a:

§

I-

z

-20

UJ

a:
a:

()

w

::l

()

()

§ -30

~

z

0

en

en

l-

I-

ir
-40
l-

I-

0

0

::l

a.

::l

::l

-50

20

10

1.0

2.0

3.0

OUTPUT VOLTAGE (V)

4.0

5.0

5.0
OUTPUT VOLTAGE (V)

FIGURE 9. Comparison of standard AHCT/HCTLS and standard LS output (a) Source, and (b) sink currents.

=8 !e!"SUNG

39

"tECHNICAL OVERVIEW
10H(mA)

loL(mA)

100

Ta=~5:C

90
80

V

70

V

60

/

---

l

V.

,.0~

-20

-30

Vee~ ~
Vee~ ~

I

20

I~ ~

Vee=4.5V

V

30

A"

-10

Vee~

I~V

40

~

T.=~5OC

Vee=5.5V

I~ /

50

10

o

l

1
Vee=~

74AHCTOO _
CTL O
7r

r

/

-40

V

/ ' ~ ~/

/
V.

./' "'/"

V

"""

74AHCTOO _
74tCTLioO

V

VodV)
5

-50
Vee 5

VOH(V)
Vee-4

Vee 3

(a)

200

Ta=125°C
-10

Vee=t5V

160

~V

~

....l/ . /V

140
120

I~V

100

~V

80

o

V ...

V

A'

-20

~

Vee=

10- +--

-30

~.5V

/

-40

-70
74AHCT244 _

j, ~

-8 0

741CTLsr4

~W
~

~V

V

-50
-60 r v e R

I~V

I

T.=~5OC

Vee=5~

~~ V

V ~v

V

L ~v

~V

74AHCT244

v~V-

5 VodV)

-10 0
Vee-5

VOH (V)
Vee- 4

(e)

Vee -3

Vee -2

o

Vr;c

J
),

Vee~5.0V

90

v: --

80

70
60

Ja=-5'5..-.
C
0

I---

~

-10

Ta=125°C
-20

~V

-30

II '/

rtf
JV

/~
./ ~

Ta=25°C

~V/ V

50

10

1

loH(mA)

V~=5.0~

20

Vee

(d)

lot. (rnA)
100

30

-

74iCTLSr4-

-90

0"

40

Vee

(b)

180

0

Vee 1

10H (rnA)

10L(mA)

60

Vee 2

74AHCTOO

-4()

.,,/ ~V

-

~V L ~
flOC
V
flOC ~
~

r--- ~~

74AHCTOO _

7rCTLiOO-

If

74tCTLiOO

VOL(V)

-50

VOH (V)

5
(e)

c8SAMSUNG
Electronics

5
(I)

40

TECHNICAL OVERVIEW
loH(mA)

loL(mA)
200
Vcc l5 .oV
180

-10
T:=-5;OC

160

,

140

I"

1/

100

"..

80

~V

60

20

-40

T:=12;OC

/~V

-50

.,.

-60
Ta=~25~

74AHCT244

~~

J/I
)(jJ

-30

-70

~V

40

--

J
J

-20

~25ob

, ......... ~

L lLl"
JV ~

120

.........

VCC~5.0V

-80

7rCTli244

LV ~ /

Ta=2~ ~ .,/
Ta~

74AHCT244 _
74HCTLS244

I

-90

/

-

......... . /~V

I

-100

5 Vc>JV)

(h)

(g)

II

FIGURE 10. Output current variations with supply voltage and temperature for standard [(a), (b), (e) (f)] and
bus driver [(c), (d), (g), (h)] outputs.

NOISE IMMUNITY & NOISE MARGINS
The term "noise" in the context of digital circuits and systems means unwanted transient variations of voltages and currents
at logic nodes. Typically noise is transferred to logic nodes or interconnecting lines by unwanted capacitive or inductive
coupling, as illustrated in Figure 11.
Mutual inductance
/ . with another

~

logicnode

external sources
Inductive and
resistive drops
Capacitive coupling
from another node

FIGURE 11. Sources of noise in digital systems.

Noise becomes a particularly critical issue in high-speed systems where fast voltage transitions accentuate these parasitic
capacitances and inductances. Also, higher speeds allow the device to respond more quickly to noise transients. Therefore,
special board layout and decoupling techniques have to be employed to confine noise to an "acceptable range". Obviously,
the wider this range, the easier it is to design a clean system. This range is dictated by the input and output characteristics
of the les in the system, as illustrated in Figure 12, and is measured in terms of "noise margins".

=8SAMSUNG
Electronics

41

TECHNICAL OVERVIEW
OUTPUTS

signal~

The output
should be Vee
as close to the supply rails
VOH
as possible. This allows
more margin for noise to
distort the output signal
without violating the logic
level requirements of the
driven inputs.

A A 1 ,L A.
--ly vyHI('-

The voltage range for each
logic level should be as wide
as possible. This relaxes the
requirements for the cleanliness
of incoming signals.

VOl~
I

GND

FIGURE 12. Requirements for good noise immunity.
Noise margins specify the maximum amplitude noise pulse that will not change the state of a driven stage, assuming the
driving stage presents a worst-case logic level to the driven stage. Specifically, the high-level and the low-level noise margins
(NMH and NMd are defined as:
NMH=VOH - VIH,
NML =VIL - VOL,
where the voltage values are the guaranteed worst-case extremes for each case. Figure 13 shows the noise margins f,or
several different interfaces.

TTL to TTL
or
Interface

5V
4.75
4.5
4.4

AHCT to AHCT,
ACHT TO TTL,
HC to AHCT

HC to HC
AHCT to HC

3.15

2.7' ,

2.0

1.35

0.8

OA'
0.1

FIGURE 13. Noise margins for various interfaces. Noise margins for HCTLS are tbe same as those for AHCT.

* When an AHCT output drives TIL loads the VOH level will be dependent on how many
loads are driven. For example if an AHCT244 drives 60LS loads, the VOH will rise to

O.4V
For some, TIL\parts, VOH is 2.4V, instead of 2.7V

c8SAMSUNG
Electronics

42

TECHNICAL OVERVIEW
It is immediately obvious that the TTL-to-TTL interfaces have the poorest noise immunity and those driven by CMOS have the
best. This is due to the rail-to-rail voltage swings of CMOS outputs.
Note the HC logic has almost symmetrical noise margins while AHCT (or HCTLS) has a very large noise margin for high
level and a smaller low-level one. This is due to the fact that AHCT (or HCTLS) inputs are designed for direct interface with
TTL and NMOS outputs as well as other CMOS. Notice, however, that the low-level noise margin (NMd for AHCT is only
0.1 V less than that for HC, which means that it provides nearly as much immunity to ground noise. In addition, since AHCT
drive capability is two to four times better than HC, it is less susceptible to noise currents coupled to its outputs. That is,
lower stray voltages are induced for a given amount of current coupling than for HC.

ESO PROTECTION
Historically, MOS devices have always been considered to be more susceptible to damages due to electrostatic discharges
(ESD), which can occur during handling and assembly procedures. However, the new protection circuitry, design, and special
processing used for AHCT and HCTLS have improved the ESD immunity for these devices where it is now much better
than that of bipolar logic.
Figure 6 and 8 show the input and output ESD protection circuitry employed. All AHCT and HCTLS pins are protected to
ESD levels typically greater than±2kV, the tests are conducted using the "human-body" model that is shown in Figure 14.

10MQ

II

1.5KQ
Of--------4\jIl,/"'ftI!I---~-

To Device
Under Test

High
Voltage
Supply

FIGURE 14. Test circuit used to measure ESD damage in AHCT and HCTLS circuits.

LATCHUP CHARACTERISTICS
SCR iatchup is an undesirable parasitic phenomenon which is inherent in circuits fabricated using bulk CMOS technology.
A parasitic four-layer (P-N-P-N) SCR structure that appears between Vce and ground can be triggered when voltages greater
than Vcc or less than ground are applied to inputs or outputs. When this happens, Vec gets effectively shorted to ground,
and the only way to get the device off the latchup mode is to shut off the power supply. If large currents are allowed to
flow through the chip, it may be destroyed. Samsung CMOS logic parts have been designed and processed to virtually
eliminate this possibility in real-life situations where voltages out of the supply range many appear at the input or output pins
(overshoots, undershoots, power-up & power-down situations).

=8SAMSUNG
Electronics

43

TECHNICAL OVERVIEW
GND

Vee

FIGURE 15. Simplified cross section of a CMOS inverter
Vee

---~Es

Rs

GND

FIGURE 16. CMOS SCR structure

GATE 1

N

A-"----+--- GATE 2

GATE 2

GATE 2

GATE 1

N

-_----c

FIGURE 17. Simplified four layer SCR structure

c8SAMSUNG
Electronics

44

TECHNICAL OVERVIEW
The parasitic SCR structure in a CMOS inverter cross section is illustrated in Figure 15, where vertical and lateral NPN and
PNP transistors are formed back-to-back by the Nand P diffusions. RA and Rs are the P-well and the N-substrate power
supply connections. Figure 16 is a schematic representation of this par~sitic structure that looks like a cross-coupled transistor model of an SCR (Figure 17). The exceptions are the RA and Rs resistors and the fact that the real SCR is triggered
at the gates, while the CMOS parasitic SCR is triggered at its emitters. This happens when either the EA is raised above
Vcc enough to turn on OA, or Es is lowered below ground enough to turn on as. When EA is brought above Vcc, current
is injected from the emitter of OA and is swept to its collector. This current, in turn, will increase the voltage at the Os gate
and once it is above O.7V, Os will turn on and feed current from its collector back into RA and into OA. When O.7V drop
appears across RA, OA will turn on even more.
If the two transistors have enough gain and enough current is provided by the supply to sustain the SCR, it will turn on
and remain on even after EA and Es are returned to the rail voltages. Notice that low resistor values effectively reduce
the gain of the transistors by stealing current away from their bases. Therefore, transistors should actually have much higher
gains in order to have an overall SCR loop gain greater than one and enable SCR to trigger.
Samsung CMOS logic parts are designed and processed to have very low RA, Rs values and low gains for the parasitic
transistors. In addition, large diodes exist between each Signal pin and the supply rails to shunt out voltages above Vcc
and below ground. In fact, traditionally, one refers to the current that flows through these diodes as the element that triggers
latchup, i.e. we talk of "Iatchup trigger currents", not voltages.
Measured on a static basis, i.e. by applying DC voltages above Vcc and below ground, Samsung parts can withstand currents typically well above 200mA-even under the worst-case conditions of 7V Vcc and +125°C operation. Figure 18
illustrates the test set-up used for static latchup tests.
A common occurence of v'lltages above Vcc and below ground in systems is overshoots and undershoots that are caused
by signal line ringing and power supply transients. '" this case, unlike the static operation, only short pulses cause forwardbias diode currents and hence possible latch-up. It turns out, fortunately, that the parasitic SCR has extremely slow response
time to transients, i.e. very poor frequency characteristics. Figure 19 shows the increased peak currents required to latch
an AHCT or HCTlS device up when the pulse width is decreased. For pulse widths in the range of several tens of nanoseconds,
it is virtually impossible to latch the device up.

vee DIODE TEST CIRCUIT

GROUND DIODE TEST CIRCUIT

A

vee

+

-=-

'---tr-lf--+- INPUT OR
OUTPUT

,

INPUT OR
OUTPUT

7V

~

7V-="

GND

OUT

T.=25·C

FIGURE 18. Test setup for measuring DC latch-up

c8SAMSUNG
Elp-ctrnnics

45

II

TECHNICAL OVERViEW

800

C(

.§..

~

(..l

700

600

Co

=?

~

n

"-

500

'" '"

---l

Vcc=7.0V
T.=25°C

L_

--jtpwr-

~

~

'"

~

-r-----

400

300
0.2

0.4

0.6

0.8

1.0

Pulse Width (ms)

FIGURE 19. Pulsed latch-up characteristics

POWER DISSIPATION
low power dissipation is by far the most important advantage of CMOS over any other technology. Particularly in the quiescent state, the AHCT and HCTlS circuits consume up to seven orders of magnitude less power than the equivalent TTL
functions. This makes them ideal for battery-operated or ultra-low power systems where the system may be put to "sleep"
by shutting off the system clock.
The dynamic power dissipation, however, depends on:
1. Cross-over currents of the internal CMOS transistors,
2. InternallQad capacitances,
3. External load capacitances, and
4. Input voltage levels.
All of the above add up every time there is a logic transition and dynamic power dissipation is the sum of these contributions
averaged at a given operating frequency. A practical formula is developed to calculate the dynamic power dissipation (PD)
resulting from the first three items: (input voltage transitions are rail-to-rail)
PD=(CL +CPD) Vcc 2 f,
where CL is the load capacitance; CpD is the "internal power dissipation capacitance", Vcc is the supply voltage and f is
the operating frequency. The CPD value, as specified in each data sheet, sums up the contributions of the first two factors
(crossover currents and internal load capaCitances) as a capacitance value for purposes of this calculation. The equation
indicates that the dynamic power dissipation is directly proportional to frequency.
The contribution of the fourth factor listed above, the input voltage levels, can also be significant when AHCT or HCTlS
inputs are driven by TTL outputs. Figure 20 shows the typical crossover currents generated at the input inverer stage as
the input voltage swings from 0 to Vcc. This is because both the n-channel and the p-channel transistors turn on partially
and provide a low-resistance current path between Vec and ground when tne input voltage is near the threshold voltage
of the complementary pair. At 2. 7V, which is the worst cas~ VOH for TTL parts, the Icc can be as high as O.5mA per input.
This has to be taken into account when calculating the worst-case power dissipation of an AHCT or HeTlS part operating
in a TTL environment.

c8SAMSUNG
Electronics

46

TECHNICAL 'OVERVIEW
Figure 21 shows the internal power dissipation for an AHCT244 (same for HCTLS244) and compares it with the dynamic
power dissipation for LS, ALS and F244. It can be seen that the curves for the bipolar parts are essentially flat for frequencies
up to 1 MHz where the quiescent currents mask out the dynamic effects. However, as the frequency goes up, the currents
that charge the internal capacitances start adding to the quiescent currents and increase the overall power dissipation. The
AHCT244 driven by worst· case TTL voltage levels (all inputs, 50% duty cycle) displays a similar trend but still dissipates
an order of magnitude less power than the lowest· power TTL. When CMOS input voltage levels are used, however, the
power dissipation is directly proportional to frequency as predicted by the above mentioned formula, and is less than
those for the TTL parts, Although the power dissipation becomes comparable to ALS levels at around 10MHz, a crossover
does not happen below 50MHz, which is already beyond the maximum clock frequencies of most systems. This behaviour
is pretty much the same for all parts in the AHCT and HCTLS families.
In calculating the power dissipation of a system, however, note that only a small percentage of the devices operate at the
maximum clock frequency while others operate at a fraction of that. Therefore the average operating frequency tends to be
much lower where CMOS has a clear advantage.

IcdmA)

I

II

5000

I

Vcc=4.5V _ Ta=25°C

Vcc =5.0V

-

Ta=25°C
500

2.0

74F244

~

Eo:

UJ

1.0

:s:0

\

c..

l\.
)

V
0.0

1.0

0.5

~

2.0

"-

~

3.0

V'N(V)

4.0

5.0

FIGURE 20. Typical crossover current of an AHCT
or HCTLS input.

'c8$A~SUNG

0.05

lK

100M

FIGURE 21. Typical dynamic power consumption
(no-load) of the 74XXX240 octal buffer
with all inputs toggling.

47,

TECHNICAL OVER,EW
AC CHARACTERISTICS
All AHCT and HCTLS parts are designed to meet or exceed the ALS and LS propagation delay specifications, respectively.
Coupled with the equivalent drive capability, this makes them ideal replacements for the ALS and LS in existing designs.
In addition the AC specifications for AHCT and HCTLS parts are improved to reflect more realistic design situations. First
of all, unlike LS, the AHC"T & HCTLS propagation delays are specified with a 50pF load for all part types and guaranteed
over the entire voltage and temperature ranges (5V ± 1 0%, - 40 ° C to + 85 ° C). Standard LS propagation delays are specified
with a 15pF load and guaranteed only at room temperature and 5V Vcc. In addition, all bus drivers specify the propagation
delays with a 150pF load capacitance to enable the designer to predict a worst-case maximum speed degradation due to
capacitive loading.
The effect of the supply voltage variations on propagation delay is illustrated in Figure 22 for a bus-driver (AHCT244). It
can be seen that the parts are functional over a very wide range of voltages and that they slow down as Vcc goes down.
Howejer, propagation delays are specified and guaranteed only over the 4.5 to 5.5V range.
Figure 23 shows the effect of temperature on the propagation delays for the same part. As for' all CMOS circuits, AHCT
and HCTLS parts slow down as temperature goes up. Typically speeds derate linearly from 25°C at about 0.02 ns/oC.
The propagation delay at any temperature (between -55°C and + 125°C) can therefore be calculated using the following
formula:

tpD (T)=tPD (25°C)+kT (T -25°C)
where:
tpD (T)=Propagation delay at the desired T temperature,
tPD (25°C)=Propagation delay at 25°C,
kT=Temperature derating factor=0.02 ns/oC
The effect of capacitive loading of the outputs on the propagation delay is illustrated in Figure 24: the higher the load capacitance,
the slower the propagation delay gets. To determine the maximum limit for propagation delay at any value of capacitive loading'
up to 500pF, the following equation is used:
tpD (CLl=tpD (50pF)+kc (Cl -50pF)
where:
tpD (CLl=Maximum propagation delay at the desired Cl,
tpD (50pF)=Maximum propagation delay from device data sheet,
kc=Maximum multiplicative factor (ns/pF):
• 0.04 for standard outputs, and
• 0.02 for bus-drivers.
tpD (ns)

tpo (ns)

I

Ta =J5 0 C._
CL =50pF

30

18 t----t--+--+--+------jr___-I---+---t Vee =4.5V
CL =50pF

16t----t--+--+--+-~r___-I---+--_t_-r__4

14t----t--+-4--+-~~-+-~-+_-~~

20

10

""

12t----t--+--+--+-~r_-I---+--_t_-r__4

10t----t--+--+--+-~r_-+--+--_t_-r_~

Specified
Operating Range

~

.......

~

...........

......... ""'-

4t----t--+--+--+-~~_+-_+_-_t_-r__;

VedV)
2

3

4

5

FIGURE 22. Propagation delay versus supply voltage
for an AHCT244.

'.: c8SAMSUNG
Electronics

-55 -35 -15 -5

25

45

65

85

105 125

T.(OC)

FIGURE 23. Propagation delay versus ambient
temperature for an AHCT244.

48

TECHNICAL OVERVIEW
tpo (ns)

tpo (ns)

Ta =d5 0 C
Vcc=4.5V

30

Ta =d5 0 C
Vcc =4.5V

30

VIV
./

20

~

10

V

V
./

20

./
.".,.10

/"'"

o

50

100 150

200 250

300

350 400

450

Cc(pF)

o

---50

~

100

~

150

"..-

-'

" . ,".-

-----

200

(a)

250

300 350

400 450

Cc(pF)

(b)

FIGURE 24. Propagation delay versus capacitive load for a (a) standard output (HCTLSOO),
(b) bus-driver output (HCTLS374)

INTERFACING 54174AHCT AND 54174HCTLS
WITH OTHER LOGIC FAMILIES AND LOADS
Speed and power, while paramount in the initial choice of a logic family, are not the only basis of decision. Another very
important factor is the interface flexibility: the inherent capacity of a family to interface with other types of logic and to drive
various loads. The Samsung CMOS logic families have this very attractive feature that they can easily be interfaced to all other
kinds of digital logic with minimal or no external components.
AHCT and HCTLS parts can be coupled directly with all other TTL, NMOS and CMOS parts if they operate from the same
supply voltage. The list includes Standard TTL, Schottky(S), Low-Power Schottky(LS), Advanced Low-Power Schottky(ALS),
Advanced Schottky (AS and FAST); all industry-standard CMOS logic families (HC, HCT, CD4000, 14000); all bipolar, NMOS
and CMOS microprocessors, microcontrollers, peripherals and memory circuits (see figure 25). This is due to the TTl·compatible
input voltage levels coupled with CMOS (rail·to-rail) output voltage swings.
Interface with ECl logic, however, requires external components as shown in Figure 26.
Methods of interfacing with standard CMOS logic families (4000 and 14000), when supply voltages are different, are il·
lustrated in Figure 27 and 28.

Standard TTL

s

LS
ALS
FAST
AS
HC
HCT
NMOS
CMOS (5V)
OUTPUTS

Vcc=5V

Vcc=5V

·1

1

-..,

-.L

AHCT
or
HCTLS

AHCT
or
HCTLS

INPUTS

OUTPUTS

-L

Standard TTL

S
LS
ALS
FAST
AS
HC
HCT
NMOS
CMOS (5V)
INPUTS

FIGURE 25. Interfacing with TTL, NMOS and other CMOS logic. No extra components are needed.

c8SAMSUNG
Electronics

49

I

TECHNICAL OVERVIEW

5V

r---'--..;;.......... 101251

f}

5V

10525
Inputs

Outputs 1 - - - - - 1 "

AHCT
or
HCTlS

ECl
System

..,

AHCT
or
HCTlS

.......1

ECl
INPUTS

OUTPUTS
Inputs .----..........-Jr~----, Outputs

1

-5.2V
-5.2V
(b)

(a)

FIGURE 26. (a) General ECl interface

(b) Driving ECl from same power supply.

Vcc =9-15V

Vcc=5V
Vcc=9-15V

I

Vcc=5V

1

I

1

.~

:!>R
Standard
CMOS

AHCT
or
HCTlS
INPUTS

OUTPUTS

Standard
CMOS
OUTPUTS

r

":"
(a)

(b)

Vcc =9-15V

Standand
CMOS

M5~90'

AHCT
or
HCTlS
INPUTS

Vcc=5V

AHCT
or
HCTlS
INPUTS

R,

OUTPUTS

Vcc=9-15V

Vcc=5V

I

I

Standard
CMOS
OUTPUTS

R
-T rT

AHCT
or
HCTlS
INPUTS

R,

'":"

.1

(e)

(d)

FIGURE 27. Methods of interfacing standard CMOS (4000 and 14000 series) outputs with AHCT and HCTLS
inputs when supply voltages are different.
(a). Using logic down converters,
(b) Using Open-drain CMOS
(b) Using resistor divider (VOH'R2/(RI+R2)~5V)
(d) Using series resistor

c8SAMSUNG
Electronics .

50

TECHNICAL OVERVIEW
Vcc=5V

Vcc=9-15V

1

1

I

I

~R

I"
AHCT
or
HCTLS
OUTPUTS

K

Standard
CMOS
INPUTS

54C906

-b
FIGURE 28. Interfacing AHCT and HCTLS outputs with standard CMOS (4000 and 14000)
using an open-drain CMOS circuit.

High Voltage and Industrial Control Interfaces
Interfacing with high voltage industrial control circuitry where 4000 or 14000-type of CMOS logic is used has been described in Figure 27 and 28. In rugged industrial and automotive environments, more care may be required to prevent large transients from harming AHCT and HCTlS logic. Figure 29 shows a typical connection that utilizes external diode clamps for
input and output protection. The values of R, and R2 depend on the output voltage of the driving circuit and' C depends
on the noise level and speed. The values of RJ and R4 depend on supply voltage and transistor type.

Driving Relays
The high-drive of AHCT and HCTlS outputs enable direct interface with relays, but additional isolation is recommended.
Clamp diodes can be used to prevent spikes generated by the relay from harming the circuit. For higher current drive, an
external transistor may be employed (Figures 30 (a) and (b)). Alternatively, multiple gates may be connected in parallel
to increase the current sinking and sourcing capability.

Driving LED's
Any AHCT or HCTlS output can be used to drive light-emitting diodes (lED's) directly. Figure 31 shows two methods of
doing this. The resistor performs the founction of current limiter. The luminous intensity of the lED depends on the amount
of forward current.

12-24V

Vcc=5V
12V-24V

R.
Industrial
or
Automotive
Control
Logic

R,

R3

R,

Industrial
or
Automotive
Control
Logic

-:FIGURE 29. Interfacing between AHCTiHCTLS logic and high-voltage industrial and
automotive circuitry in rugged environments.

c8SAMSUNG
Electronics

51

II

TECHNICAL OVERVIEW

r - - - - - - - - --,
AHCTor
; HCTLS
I

11

I

1N4148

r---------,

I

50-100Q

I

I

I

I

I

L ___ _

1N4148

I
I

I

____ J

__ .JI

I
I

I

<>---t-

I
I

8

I

I

Relay

-,

o
o
I
I

t ___ _
L

I
I

___ J
(a)

(b)

FIGURE 30. Methods of driving relays. (a) Direct and (b) Through a transistor for higher drive (R = Vcc - 0.7)/lclfJ».

AHCT
or
HCTLS

Vee

R

./f/ LED

ACHT
or
HCTLS

FIGURE 31. Methods of driving LED's

cas··SAMSUNG
Electronics

52

TECHNICAL OVERVIEW
Design Tips
Although the AHCT and HCTLS families are functionally equivalent to the ALS and LS families, some conditions have to
be satisfied in order to be able to simply replace them in existing designs. The AHCT and HCTLS families essentially integrate
TTL and CMOS characteristics into one family. Therefore, in general, the do's and don'ts of both families apply to the AHCT
and HCTLS.
• Don't leave any AHCT or HCTLS input floating. This is frequency overlooked problem with bipolar devices although
it is discouraged by every bipolar manufacturer. CMOS inputs have extremely high input impedance and if left unterminated,
can pick up noise that causes excursions through the threshold. The result is random switching of the device and high power
consumption which can be excessive, especially if the inputs stay very close to the device threshold. Prolonged exposure
to these conditions can damage the device. The thing to do is to simply tie the unused inputs to Vcc or ground (or they
can be tied to nearest operational pin although this may cause more power consumption).
• Don't power up inputs before both Vcc and ground are connected, and don't plug boards into or out of powered connectors unless input currents are limited to the absolute maximum ratings specified for the device: and are short-lived. Both
conditions can forward bias the input and output ESD protection diodes, resulting in excessive diode currents (see Figure
32). If these conditions cannot be avoided, one of the following methods should be used to prevent damage to the AHCT/HCTLS
circuits:
Use connectors that apply power before signals.
Add series resistors at each input to limit currents to the absolute maximum ratings (Figure 33a).
Add logic to board interfaces that forces all outputs to either ground or high-impedance state when they are connected
to unpowered devices (Figure 33b).
Add logic to board inputs to prevent direct interface with un powered HCTLS inputs (Figure 33c). Circuits designed for
this purpose are 7 4AHCT 4049 (Hex Inverting Logic Level Down Converter) and 7 4AHCT 4050 (Hex Logic Level Down
Converter). These parts have a modified input protection structure that enables them to be used as logic level translators
which convert high-level logic to low-level logic while operating from the low logic supply. In this case, since the low
logic supply is zero (unpowered), the outputs of the 4049 and 4050 will always be zero regardless of the inputs.

POWERED SYSTEM

UNPOWERED SYSTEM
-,------,-- UNPOWERED Vee
LINE

ANY TTL

TYPICAL CMOS
INPUT STAGE

NMOSORCMOSI------~==T__+~

OUTPUT

--'----='=- SYSTEM

f-

GROUND

UNPOWERED Vee
LINE
3-ST ATE OUTPUT STAGE

I- L__--::I-::--_

SYSTEM GROUND

FIGURE 32. Direct interface to unpowered CMOS ICs presents a dangerous situation where high-level
signals forward-bias input and output protection diodes and try to "power-up" the Vcc line.
Excessive currents at such an interface can cause damage to the circuitry.

c8SAMSUNG
FI~('trnni('~

53

II

TECHNICAL OVERVIEW

POWERED
SYSTEM

UNPOWERED
SYSTEM

POWERED
SYSTEM

UNPOWERED
SYSTEM

-

A~A

"'R'"

INTER
FACE
LOGIC

..
A~A
.......
AAA

-

(a)

(b)
POWERED
SYSTEM

UNPOWERED
SYSTEM

I--INTER·
FACE
LOGIC

r(c)

FIGURE 33. Methods of protection in power-down situations: (a) Use of series resistors to limit input currents
to absolute maximum ratings, (b) Interface logic circuitry that forces all outputs to either ground or highimpedance state, (c) Interface circuitry at board inputs that acts as buffer between powered and unpowered
devices; ideal components for this purpose are the 74AHCT4049 and 74AHCT 4050 Hex Logic Level Down
Converters that lack the Vce diode in their protection circuitry.

- In bus-oriented systems, don't allow the bus to stay in high-impedance state for extended periods of time if it is not
terminated, because this will have the same effect as leaving inputs open. Two simple ways of terminating the bus are illustrated in Figure 34. Most microprocessor-based systems, however, do not keep the bus in 3-state for long periods, in
which case, the bus capaCitance can maintain valid logic levels. In these cases, pull-up or pull-down circuitry may not be
necessary.
-The edge-rates of the AHCT and HCTLS part are similar to the very high-speed TTL parts. Tnerefore, system grounding
and supply-decoupling techniques normally employed in high-speed TTL designs should be duplicated in AHCT/HCTLS designs
to ensure proper operation. A good rule of thumb to reduce the affects of PC board trace inductance is to place 0.01 to
0.1 j.lF RF-grade capaCitors every two-to-five ICs (octal flip-flops and buffers may require more decoupling). This, of courSe,
has to be accompanied by careful pc board layout to minimize these inductances.
- The testing problems encountered in ALS, LS and FAST apply also to AHCT and HCTLS. Most of these problems
result from the noise produced by the interactions of the device being tested and the test system. Typical test fixtures
have lead inductances several times that of a PC board socket. This inductance, especially in the device ground path is
the source of these problems.
The outputs, for example, can cause transient currents in the 50 to 200 mA range within a couple of nanoseconds while
changing state. These appear as changes in the voltage drop across the device ground lead. The test system's input and
output reference voltages are set with respect to tester ground and are not affected by these transients. Consequently
the effective input voltages to the device will vary. If the ground pin goes up 1 volt, all the inputs effectively go down 1
volt. This must be considered in selecting input and output voltage levels. In functional tests, for example, solid input logic
levels should be applied, instead of 0.8 and 2.0 volts.
Furthermore, if TTL test programs are to be used, one must be particularly careful not to apply voltages to inputs and outputs
that are below ground or above Vcc in excess of the absolute maximum limits specified in the data sheets.

c8SAMSUNG
Electronics

54

TECHNICAL OVE~VIEW

3-STATE BUS

. . .

~

I-

R

~

R

R

R :

R

~

R

R :

Vee or GND

(a)

AHCT/HCTLS
541 or 244
(3-State Octal
Buffers)

R

R

R

R

R

R

R

R

1

3-STATE
BUS

(b)

FIGURE 34. Methods of terminating 3-state buses; (a) Pullup or pulldown resistors (b) Use of 3-state buffers.
The latter approach terminates the bus to the last active logic level and dissipates no static power.

c8SAMSUNG
~I

__ "'",__ :-""

55

II

NOTES

J ...

,

~

"

KS54AHCT
KS74AHCT

00

Quad 2-lnput NAND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 rnA @ VOL .=O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These dp.vices contain four independent 2-input NAND
gates that perform the Boolean functions Y = A. B or

PIN CONFIGURATION

Y=A+B
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground .

LOGIC DIAGRAM
(1)

1A

Vee

18

48

1Y

4A

2A

4Y

28

38

2Y

3A

GND

3Y

1A
1B

~
(3)

(2)

~
~~~

II

1Y

2Y

(9)

3A~3Y
3B~
(12)

4A~4Y
4B~

FUNCTION TABLE

(Each Gate)
Inputs

Output

A

B

Y

H
L
X

H
X
L

L
H
H

59

00

KS54AHCT
KS74AHCT

Quad 2-lnput NAND Gates

Absolute Maximum Ratings *
Supply Voltage Range Vcc, ........ -0.5V to +7V
DC Input Diode Current; hK
(VI < -0.5V or VI > Vcc +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) ......... ±35 mA
Continuous Current Through
Vec or GND pins . . . . . . . . . . . . . . .. ± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt. . . . . . 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc .............. 4.5V to 5.5V
DC Input & Output Voltages *. VIN. VOUT . . OV to Vcc
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V±10% Unless Otherwise Specified)

TII =25°C

Symbol Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits \

Minimum High-level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum low-level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-level
Output Voltage

VOH

VIN = VIH or VIL
lo=-20",A
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum low-level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/oiA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

/oI A

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Icc

Vee Vce -0.1
4.2
3.98
0

VIN=VCC or GND
IOUT=O",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
louT=O",A

AC ELECTRICAL CHARACTERISTICS

(Input tr , tf~2 ns), AHCTOO

Ta =25°C

Characteristic

Symbol Conditions t Vce=5.0V
Typ
tpLH

Propagation Delay

t - - - CL=50pF

tpHL

Input CapaCitance

CIN

Power Dissipation CapaCitance *

Cpo

• Cf'; deterlTlflleS ttle

(per gate)

KS74AHCT

KS54AHCT

Ta = -40°C to +85°C Ta = -55°C to +125°C

Vee =5.0V:1: 10%
Min

7
8

Max
11
11

Vec=5.0V:1: 10%
Min

Unit

Max

14

ns

14

5

pF

15

pF

no·load dynamiC power diSSipation: Po=Cpo Vee I
waveforms see section 2.

t For AC switching test circuits and timing
1

=8SAMSUNG
Electronics

60

KS54AHCT
KS74AHCT

01

Quad 2-lnput NAND Gates
with Open-Drain Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Driv.Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to S.SV
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2-input NAND
gates with open-drain outputs. Using a suitable pull-up
resistor, these outputs may be connected to other opendrain outputs to implement wired-AND functions.

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

II

(1,4,10,13)

lY

Vee

lA

4Y

18

48

2Y

4A

2A

3Y

28

38

GND

3A

;

(2'5'8'11)~~Y
(3,6.9,12)

J..-

FUNCTION TABLE
(Each Gate)
Inputs

Output

A

B

y

H
L
X

H
X
L

L
H
H

c8SAMSUNG
Electronics

61

01-

KS54AHCT
KS74AHCT

Quad 2-lnput NAND Gates
with Open-Drain Outputs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/o C from 65 ° C to 85 ° C

Supply Voltage Range Vee,
__ -0.5V to +7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vec +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
± 1 25 mA
Storage Temperature Range, T5 1g •.. -65°C to +150°C
Power Dissipation Per Package, Pdt .. _ . _ . 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, Your
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C~ +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf .. _

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may OCCUI
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C

Test Conditions

KS74AHCT
KS54AHCT
Ta =-400Cto +85°C Ta = -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-L.evel
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20jAA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

jAA

Maximum Output
Leakage Current

loz

VIN=V'H or VIL
Vour=Vee

±0.5

±5.0

±10.0

jAA

0

--

Maximum Quiescent
Supply Current

Icc
-----~

i:itio:al-Worst---

ICase
Supply
Current

. t.lce

V'N=Vce or GND
lour=OjAA
per Input pin
VI=2.4V
other Inputs:
at Vee or GND
lour=OjAA

2.0

------;---.-;-~------r__

--1-

jAA

----

3.0

I

ImA

(Input tr , tf~2 ns), AHCT01

KS74AHCT
KS54AHCT
Til =25°C
Ta = -40°C to +85°C T. = -55°C to +125°C
Symbol Conditions t Vcc=5.0V
Unit
Vcc=5_0V±10%
Vcc=5.0V± 10%
Typ

Propagation Delay

40.0
---

2.9

2.7

AC ELECTRICAL CHARACTERISTICS
Characteristic

20.0
--~--

tpLH

f------

tpHL
Input Capacitance

CIN

Power Dissipation Capacitance·

Cpo

Min

Max

Min

Max

CL=50pF
RL =1 kO

17

25

29

10

16

19

5

pF

(per gate)

15

pF

ns

* CPD determines the no-load dynamic power dissipation: PD=CPD Vce' fin-

t

For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

62

KS54AHCT
KS74AHCT

02

Quad 2-lnput NOR Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.SV to S.SV
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2-input NOR gates
that perform the Boolean functions Y=A+B or Y=A·S.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION

1Y

Vee

1A

4Y

18

48

2Y

4A

2A

3Y

2B

3B

GND

3A

1A~

1B~'

II

1Y

2A~
2B~

3A~
3B~'

2Y

3Y

4A~
4B

JE~

4Y

FUNCTION TABLE
(Each Gate)
Inputs
A

B

H

X

X

H
L

L

Output
y

=8SAMSUNG
Electronics

L
L
H

63

KS54AHCT
KS74AHCT

02

Quad2-lnput NOR Gates

Absolute Maximum Ratings·
Supply Voltage Range Vcc. . ....... -0.5V to + 7V
DC Input Diode Current. 11K
(VI < -0.5V or VI > Vcc +O.5V) ... " ±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin. 10 .
(-0.5V < Vo < Vcc +0.5V) ......... ±35 mA
Continuous Current Through
Vcc or GND pins . . . . . . . . . . . . . . .. ± 125 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vcc .............. 4.5V to 5.5V
DC Input & Output Voltages *. VIN. VOUT . . OV to Vcc
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times. tr • tf . . . . . . . . . Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V± 10% Unless Otherwise Specified)

Ta =2S O C

Symbol Test Conditions

Typ

KS74AHCT
KS54AHCT
T8= -40°C to +85°C T8= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum low-level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-level
Output Voltage

VOH

VIN=VIH or VIL
10=-2OIlA
10=-4mA

Vee "-0.1
3.84

Vee -0.1
3.7

V

Maximum low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vce or GND

±0.1

±1.0

±1.0

IlA

Maximum Quiescent
Supply Current

lee

2.0

20.0

40.0

IlA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Iee

Vee Vee -0.1
4.2
3.98
0

VIN=Vee or GND
10UT=01lA
per input pin
V\=2.4V
other Inputs:
at Vee or GND
IOUT=OIlA

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r • tf~2 ns). AHCT02

KS74AHCT
KS54AHCT
T. =2S O C
T. = -40°C to +85°C T. = -55°C to +125°C
t
Symbol Conditions Vcc=5.0V
Unit
Vcc=5.0V%10%
Vcc=S.OV% 10%
Typ

Propagation Delay

~

CL=50pF

tpHL

Input Capacitance

CIN

Power Dissipation Capacitance *

CPD

(per gate)

Min

Max

Min

Max

7

12

14

7

12

14

ns

5

pF

15

pF

CI':J det(:rfllrnes the no-load dynamic power dissipation PO=CPD Vee' I",.
For AC sWitching test crfcilits and tlmrllq w;welorflls spp snctr()11 2

c8·SAMSUNG
Electronics

64

KS54AHCT
KS74AHCT

03

Quad 2-lnput NAND Gates
with Open-Drain Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wi~e operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C

These devices contain four independent 2-input NAND
gates with open-drain outputs. Using a suitable pull-up
resistor, these ootputs may be connected to other opendrain outputs to implement wired-AND functions.

• P.ackage options include "small outline" packages
(Available Tape & Reel), standard DIPs_

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM
.

1A

Vee

18

48

1Y

4A

2A

4Y

28
2Y

38

GND

3Y

:

(1,4,9,12)

D--[>o--1

(2,5,10,13)

l
r(3.6.8.11 Y

.•
.

3A

FUNCTION TABLE
(Each Gate)
Inputs

Output

A

B

y

H
L

H
X
L

L
H
H

X

=8SAMSUNG
Electronics

65

I

KS54AHCT
KS14AHCT

03

Quad 2-lnput NAND Gates
with Open-Drain Outputs

Absolute Maximum Ratings·
t Power Dissipation temperature derating:

Supply Voltage Range Vee, ., ...... -0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ' ±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . . .
±35 rnA
Continuous Current Through
Vee or GND pins . . . . . . . ..
. ... , ± 1 25 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

. Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee .............. 4.5V to 5.5V
• DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 10% Unless Otherwise Specified)

Ta=25°C

test Conditions

Typ
Minimum High-Level
Input Voltage
Maximum Low-Level
Input Voltage

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C fa= -55°C to +125°C Unit
Guaranteed Limits

VIH

2.0

2.0

2.0

V

VIL

0.8·

0.8

0.8

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/lA
lo=4mA
lo=8mA

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

/lA

Maximum Output
Leakage Current

loz

VIN=VIH or VIL
VOUT=VCC

±0.5

±5.0

±10.0

/lA

Maximum Quiescent
Supply Current
---

----

I Additional

Worst
ICase Supply

lcur~ent

b

VIN=VCC or GND
IOUT=O/lA
- perinput-p;nVI=2.4V
bolee other Inputs:
at Vee or GND
louT=O/lA

-----

I

40.0
-

-----

----

1----

2.9

/lA
---~

3.0

'----

rnA

(Input tr , tf~2 ns), AHCT03

KS74AHCT
KS54AHCT
Ta =25°C
Ta = -40°C to +85°C Ta = -55°C to +125°C
Symbol Conditions t Vcc=5.0V
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Propagation Delay

------_._-

2.7

AC ELEC.TRICAL CHARACTERISTICS
Characteristic

20.0

2.0

Icc

-

tpLH
tpHL

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

Min

Max

Min

Max

CL=50pF
RL=1kO

17

25

29

10

16

19

5

pF

(per gate)

15

pF

ns

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 1 fint For AC switching test circuits and timing waveforms see "3ection 2.

c8SAMSUNG
Electronics

66·

KS54AHCT O~
KS74AHCT

Hex Inverters

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT:· -55°C to +125°C
• Package options include" small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain six independentinverters. They perform the Boolean function Y = A.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
around.

LOGIC DIAGRAM

PIN CONFIGURATION

1A

Vee

lY

6(,.

2A

6Y

2Y

5A

3A

5Y

~ lY
lA~---

~
····2Y

2A-~

_(5)~(6)

3A~3Y

~

3Y

4A

4A~

GND

4Y

~
5A-~5Y

4Y

-.l13~(1~

6A~6Y

FUNCTION TABLE

(Each Inverter)
Input

Output

A

y

H
L

L
H

c8~~~SUNG

67

04

KS54AHCT
KS74AHCT

Hex Inverters

Absolute Maximum Ratings·
t Power Dis~ipation temperature derating:
Plastic Package (N): -12mW/oe from 65°C to 85°C

Supply Voltage Range Vcc. . .
. . -0.5V to + 7V
DC Input Diode Current. hK
(V, < -0.5V or V, > Vee +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vce +0.5V)
±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vce +0.5V) . .
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt
500 mW

Recommended Operating Conditions
Supply Voltage. Vcc . . .
4.5V to 5.5V
DC Input & Output Voltages·. Y,N. Your .. OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times. tr • tf
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device ator beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V±10% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta,= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

V,H

2.0

,2.0

2.0

V

Maximum Low-Level
Input Voltage

VrL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VrN=VrH or VrL
10=-20J..lA
10=-4mA

Vcc -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VrN=VrH or VrL
10=20J.lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VrN=Vcc or GND

±0.1

±1.0

±1.0

J.lA

2.0

20.0

Maximum Quiescent
Supply Current
.....
-._-------I Additional

Icc
--~

Worst

ICurrent
Case Supply

blce

VrN=Vcc or GND
10ur=OJ.lA
per input pin
V,=2.4V
other Inputs:
at Vee or GND
lour=OIlA

f-------~~-

Vcc Vce -0.1
4.2
3.98
0

[---

Characteristic

tpLH
r - - - CL=50pF
tPHL
elN

Power Dissipation Capacitance *

Cpo

t

__ _---..

3.0

J.lA
r-~

mA

Min

c8 SAMSUNG

Max

Max

11

14

7

11

14

ns
pF

5
(per gate)

Min

7

pF

15

Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee'
For AC switching test circuits and timing waveforms see section 2.

Electronics',

..

KS74AHCT
KS54AHCT
Ta =25°C
Ta = - 40°C to + 85°C Ta = -55°C to +125°C
Unit
Symbol Conditionst Vcc=5.0V
Vcc=5.0V~10%
Vcc=5.0V~ 10%

Input Capacitance
*

------~-

(Input tr • tf~2 ns). AHCT04

Typ
Propagation Delay

~

2.9

2.7

AC ELECTRICAL CHARACTERISTICS

40.0

-..

, . _ _ _ - - _ _ 00

fill

Icc Vcc.

68

KS54AHCT
KS74AHCT

05

Hex Inverters with Open-Drain Outputs

'FEATURES

DESCRIPTION
These devices contain six independent inverters with opendrain outputs. Using a suitable pull-up resistor, these outputs may be connected to other open-drain outputs to implement wired-AND functions.

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directfy with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

LOGIC DIAGRAM

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vec and
ground.

(2,4,6,8, 10, 12)
1A

Vee

1Y

6A

2A

6Y

2Y

5A

3A

5Y

3Y

4A

GND

4Y

I~r'

II

FUNCTION TABLE

(Each Inverter)
Input

Output

A

y

H

L

L

H

c8SAMSUNG
Electronics

69

KS54AHCT
KS74AHCT

05",

Hex Inverters with Open-Drain Outputs

Absolute Maximum Ratings*
t Power Dissipation, temperature derating:
Plastic Package (N): -12mW/OC from 65°C to 85°C

Supply Voltage Range Vcc,
-0.5V to +7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) .
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, T519 . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, Your
OV to Vec
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C to +125°C
, , . Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functi~nal operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vcc=5V± 1 0% Unless Otherwise Specified)

Ta=25°C
-,--

KS74AHCT
Ta= -40°C to +85°C

Typ

T~=

KS54AHCT
-55°C to +125°C Unit

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/AA
lo=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±.1.0

±1.0

loz

VIN = VIH or VIL
VouT=Vce

Maximum Quiescent
Supply Current

Icc

- --

I

i

/AA
------

Maximum Output
Leakage Current

:Additional Worst
Case Supply
I Current

0

±0.5

VIN=VCC.or GND
10uT=0/AA
per input -pin--VI=2.4V

-----

-

40.0

-

J.lA
-- ----

------

i

I

2.7

2.9

3.0

mA

I

)

AC ELECTRICAL CHARACTERISTICS

(Input t r , tf";2 ns), AHCT05

KS54AHCT
KS74AHCT
Ta = 25°C
T. = - 40°C to + 85°C Til = -55°C to +125°C
Symbol Conditions t Vcc=5.0V
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Propagation Delay

J.lA

i

"'cc Iother
Input"
at Vcc or GND

Characteristic

±10.0

20.0

2.0

I

louT=OJ.lA

±5.0

tpLH

r - - - CL=50pF
RL=1kn
tPHL

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per inverter)

Min

Max

Min

Max

17

25

29

8

14

33

ns

5

pF

15

pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc'

fin-

cc Vee .

t For AC switching test circuits and timing waveforms see section 2,

:CJSAMSUNG
• • Electronics

70

08

KS54AHCT
KS74AHCT

Quad 2-lnput AND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 rnA @VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: ~40°C to +85°C
KS54AHCT: - 55°C to + 125°C
- Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2-input AND. gates.
They perform the Boolean functions Y=A-B or Y=A+B.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any. external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

(1\

1A

Vee

18

48

1Y

4A

2A

4Y

28

38

2Y

3A

GND

3Y

1A-'~3) 1Y

II

(2)
18(4)

(6)

2A~2Y
28~
(9)

(8)

3A~3Y
3B~(12)

(11)

4A~~4Y
4B~

FUNCTION TABLE
I

(Each Gate)
Inputs

f--._-_._-

Output

B

Y

H

H

H

L
X

X
L

L
L

A

c8SAMSUNG
Electronics

71

08 .

KS54AHCT
KS74AHCT

Quad 2-lnput AND Gates

Absolute Maximum Ratings*
t Power DisSipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ....... -0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continu.ous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) .
±35 mA
Continuous Current Through
Vce or GND pins. . . . . . . . .
±125 mA
Storage Temperature Range, Tstg . . . - 65 0 C to + 150 0 C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vcc
Operating Temperature
Range
KS74AHCT: -4poC to +85°C
KS54AHC~ -55°C~ +125°C
... Max 500 ns
Input Rise & Fall Times, tr , tf ...

.. Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V± 1 0% Unless Otherwise Specified)

Ta ==25°C

Symbol Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta ==-40°Cto +85°C Ta ==-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

",A

2.7

2.9

3.0

rnA

I,

Additional Worst
Case Supply
Current

I

6.lcc

'.

VIN=VCC or GND
10UT=0",A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10UT=0",A

Vcc Vcc -0.1
4.2
3.98
0

:

I

1

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr , tf~2 ns), AHCT08

KS74AHCT
KS54AHCT
Ta == 25°C
Ta== -40°C to +85°C Ta == - 55°C to + 125°C
Unit
Symbol Conditions t Vec == 5.0V
Vcc==5.0V± 10%
Vce=5.0V±10%
Typ

Propagation Delay

-

tpLH

CL=50pF

tpHL
Input Capacitance

CIN

Power DiSSipation Capacitance"

Cpo

(per gate)

Min

Max

Min

Max

8

14

17

8

14

17

ns

5

pF

15

pF

.. Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

72

KS54AHCT
KS74AHCT

09

Quad 2-lnput AND Gates
with Open-Drain Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2-input AND gates
with open-drain outputs. Using a suitable pull-up resistor,
these outputs may be connected to other open-drain outputs to implement wired-AND functions.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION

(3.6.8,11)
1A

Vee

18

48

1Y

4A

2A

4Y

28

38

2Y

3A

GNO

3Y

A (1.4.9.12)

B /2.5. W. '"

~Y
~1

FUNCTION TABLE

(Each Gate)
Inputs

Output

f-----~

A

B

Y

H
L

H

X

X

L

H
L
L

c8SAMSUNG
Electronics

73

KS54AHCT
KS74AHCT

09

Quad 2-lnputAND Gates

. with_ Open-Drain Outputs

Absolute_ Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vce.+0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vec +0.5V) . . . . . .
±35 mA
Continuous Current Through
Vec or GND pins . . . . . . . . . . . . . . .. ± 1 25 mA
Storage Temperature Range, Tstg . . . - 65 ° C to + 150 ° C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc ....... ; . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vcc
Operating Temperature
KS74AHCT: -40°C to +85"C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta =-40°Cto +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O fJ A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0,·1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

fJA

loz

VIN=VIH or VIL
VOUT=VCC

±0.5

±5.0

±10.0

~

Maximum Output
Leakage Current
Maximum Quiescent
Supply Current
Additional Worst
Supply
Icurrent.

Icc
.-

j

i Case

~Icc

0

VIN=VCC or GND
10uT=OfJA
_.._-_
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
lOUT = OfJA
--

2.0

2.7

AC ELECTRICAL CHARACTERISTICS
Characteristic

20.0
--------.

..-

-----

.-

,

fJA
-_

-----~

2.9

3.0

.. - -

..

mA

(Input tr , tl:::;;2 ns). AHCT09

KS54AHCT
KS74AHCT
Ta =25°C
Ta =-40°Cto +85°C Ta = -55°C to +125°C
Symbol Conditions t Vcc= 5.0V
Unit
Vcc=5.0V± 10%
Vcc = 5.0V ± 1.0 %
Typ

Propagation Delay

40.0

------

tpLH

~

tpHL
Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

Min

Max

Min

Max

CL=50pF
RL=1 kO

18

27

31

9

15

18

5

pF

(per gate)

15

pF

ns

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

74

KS54AHCT
KS74AHCT

10

Triple 3-lnput NAND Gates

FEATURES

DESCRIPTION

- Function, pin-out, speed ~md drive compatibility with
54174ALS logic family
- Low power consumption characteristic of CMOS
- High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
- Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
- Wide operating voltage range: 4.5V to 5.5V
- Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain three independent 3·input NAND
gates. They perform the Boolean functions Y=A-B-C or

PIN CONFIGURATION

LOGIC DIAGRAM

Y=A+B+C.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

(1)

1A~
1A

Vee

1B

1C

2A

1Y

2B

3C

2C

2Y

38
3A

GND

3Y

II

~~~-1Y
2A

(3)

3A

(9)

2B~2Y
2C~

3B~3Y

3e~

FUNCTION TABLE
(Each Gate)
Inputs

Output

A

B.

C

y

H
L

H

H

X

X
X

L

X
X

X

L

L
H
H
H

cRSAMSUNG
• • Electronics

75

KS54AHCT
KS74AHCT

1.0

Triple 3-lnput NAND Gates

Absolute Maximum Ratings·
t Power Dissipation temperature derating: .
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, . . . .
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
. . .. ± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee
..... '.' . . . 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, t r , tf
.. Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

KS74AHCT
KS54AHCT
Ta = - 40°C to + 85°C Ta =-55°Cto +125°C Unit

Typ
Minimum High-Level
Input Voltage

Guaranteed Limits

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/J A

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

",A

~tional

Worst

ICurrent
~ase Supply

..6.lee

Vee Vee -0.1
3.98
4.2
0

VIN=Vee or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

- - f----

2.7

AC ELECTRICAL CHARACTERISTICS
Characteristic

2.9

KS74AHCT
KS54AHCT
T.=25°C
T. = -40°C to +85°C T.=-55°Cto +125°C
Symbol Conditionst Vcc=5.0V
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%

~

CL=50pF

tpHL

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

Min

:8SAMSUNG

Min

Max

15

18

9

15

18

ns
pF

5
(per gate)

Max

9

pF

15

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee l
t For AC switching test circuits and timing waveforms see section 2.

Electronics

mA

3.0

(Input t r , tf~2 ns), AHCT1 0

Typ
Propagation Delay

. - - - - - - - - . - -f.,---

fin.

76

KS54AHCT
KS74AHCT

11

Triple 3-lnput AND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40o'C to +85°C
KS54AHCT: - 55°C to + 125°C
- Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain three independent 3-input AND
gates. They perform the Boolean functions Y=A-B-C or
y=A+B+C.
These devices provide· speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
. static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION

(1)

1A~2)
(12)

1A

Vee

18

1C

2A

1Y

28

3C

2C

38

2Y

3A

GND

3Y

18
1C

2A

1Y

(13)
(3)

28~2Y
2C~····
(9)

3A~10)
(8)
38
3C

(11)

3Y

FUNCTION TABLE
. (Each Gate)

h--"'PU~~
ABC
H
L
X
X

H

-X
L
X

H
X
X
L

=8SAMSUNG
1:I.o.,..+ ..""_i,.. ....

Output

Y
H
L
L
L

77

KS54AHCT
KS74AHCT

11·-

Triple 3-lnput AND Gates

Absolute Maximum Ratings·
t Power Dissipation temperature derating:

Supply Voltage Range Vee, ... . . . . -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, io
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins ............... , ± 1 25 mA
Storage Temperature Range, T8 tg •.. -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Plastic Package (N): -12mW{OC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc ..... : ........ 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . .. Max 500 ns

" Absolute Maximum Ratings are those values beyond
Which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

Vil

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or Vil
10=-20J.lA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or Vil
10=20J.lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

J.lA

2.0

20.0

Maximum Quiescent
Supply Current

Icc

I
I

IAdditionaJ Worst
Case Supply
Current

t:.lee

Vee Vee -0.1
3.98
4.2
0

VIN=VCC or GND
10uT=_0J.lA
per input pin
VI=2.4V
other Inputs:
at Vec or GND
10uT=0l-'A

--

mA

KS54AHCT
KS74AHCT
Ta =25°C
Ta = - 40°C to + 85°C Ta = -55°C to +125°C
Symbol Conditionst Vce=5.0V
Unit
Vee = 5.0V:i: 10%
Vcc=5.0V:i: 10%

~
tpHl

Input Capacitance

CIN

Power Dissipation Capacitance"

Cpo

Cl=50pF
Rl=1kO

9
9

(per gate)

15

Min

c$!SAMSUNG

Max

Min

Max

15

18

15

18

ns
pF

5

" Cpo determines the no-load dynamic power dissipation: PO=CPD VCC 2
t For AC switching test circuits and timing waveforms see section 2.

• • Electronics

3_0

-

(Input tr , tf~2 ns), AHCT11

Typ
Propagation Delay

J.lA

--------"--

2.9

2.7

AC ELECTRICAL CHARACTERISTICS
Characteristic

40.0
----

pF
fin.

78 .

KS54AHCT
KS74AHCT

12

Triple 3-lnput NAND Gates
with Open-Drain Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
,
• Low power consumption characteristic of CMOS
• High--Driv.current outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military .temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain three independent 3·input NAND
gates with open·drain outputs. They perform the Boolean
functions Y=A.S·C or y=A+B+C.
Using a suitable pull-up resistor, these outputs may be connected to other open-drain outputs to implement wired-AND
functions.

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

LOGIC DIAGRAM
A~(1'3'9)
.

1A

Vee

18

1C

2A

1Y

28

3C

2C

38

2Y

3A

GND

3Y

(2,4.10)

: "3,5.'"

r-

P2 6 s
• • )y

_.

FUNCTION TABLE
(Each Gate)
Inputs

Output

A

B

C

y

H
L
X
X

H
X
L
X

H
X
X
L

L
H
H
H

I

cHSAMSUNG

79

KS54AHCT
KS74AHCT

12'

Triple 3-lnput NAND" Gates
with Open-Drain Outputs

Absolute Maximum Ratings*
Supply Voltage Range Vee •....... -0.5V to +7V
DC Input Diode Current. 11K
(VI < -0.5V or VI > Vee +O.5V) . " " .. ±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0.5V) . . .. ±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vcc or GND pins . . . . . . . . . . . . . . .. ± 125 mA
Storage Temperature Range. TSlg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vcc .............. 4.5V to 5.5V
DC Input & Output Voltages·. VIN. VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to. +125°.(;
Input Rise & Fall Times. tr • tf ...... " " . Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions Q1ay affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V± 10% Unless Otherwise Specified)
KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit

Symbol Test Conditions
Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

0.8

0.8

0.8

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

±0.5

±5.0

±10.0

2.0

20.0

40.0

2.9

3.0

Maximum" Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20,..A
10=4mA
10=8mA

o

Maximum Input
Current
Maximum Output
Leakage Current

102

Maximum Quiescent

Icc

Sup~ly gurre~__ __
!Additionat Worst
lcase Supply
Current

VIN=VIH or VIL
VOUT=VCC
VIN=VCC or GND

-~~rT~g~;prn---b.lcc

I

VI=2.4V
other Inputs:
at Vec or GND
10UT=0,..A

AC ELECTRICAL CHARACTERISTICS

(Input tr • tf~2 tis). AHCT12

T8 =25°C

Symbol Conditions t Vcc=5.0V

Characteristic

Typ

~

Propagation Delay

CL=50pF

tpHL

Input Capacitance

CIN

Power Dissipation Capacitance·

Cpo

KS74AHCT
T.

= - 40°C to + 85°C
Vcc=5.0V:t:10%
Min

Electronics

,"

Vcc=5.0V:t: 10%
Min

Unit

Max

27

31

11

18

22

ns
- - f-----

pF
pF

15

• Cpo determines the no-load dynamic power dissipation: PD=CPD VCC 2
t For AC switching test circuits and timing waveforms see section 2.

ci$SAMSUNG'

Max

KS54AHCT
Ta = -55°C to +125°C

19
5

(per gate)

rnA

fin.

80

KS54AHCT
KS74AHCT

14

Hex Schmitt-Trigger Inverters

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOl =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5 ..5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These Schmitt-trigger devices contain six independent inverters. They perform the Boolean function Y=A.

PIN CONFIGURATION

LOGIC DIAGRAM

lA

Vee

lY

6A

2A

6Y

2Y

5A

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

II

lA~lY
2A

~
~
·2Y

~
3A~3Y

3A

5Y

3Y

4A

4A

GND

4Y

~
5A~5Y

~
_~ __
4Y

~

6A~_6Y

FUNCTION TABLE
(Each Inverter)
Input

I

Output

A

'

Y

H
L

L
H

cg·SAMSUNG
Electronics

81

Hex

Schmitt-Trigg~r

Inverters

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vee,
-0.5V to +7V
DC Input Diode Current, 11K
(VI < -0.5V orVI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -:-0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V  Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
±35 mA
(-0.5V < Vo < Vee +0.5V).
Continuous Current Through
Vee or GND pins.
±125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee . . . . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40.oC to +85°C
KS54AHCT: -55°C~ +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)
KS74AHCT
T8= -40°C to +85°C T8

Ta =25°C
Typ

KS54AHCT
to +125°C Unit

= -55°C

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20j.lA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20",A
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

40.0

",A

3.0

mA

i

IAdditional

Worst
Case Supply
icurrent

f

I "'cc

~

_

.

.

.

.

.

.

.

.

.

----

2.9

(Input t r , tf~2 ns), AHCT2U

KS74AHCT
KS54AHCT
Ta'=25°C
Ta = -40°C to +85°C Ta = - 55°C to +125°C
Conditions
t
Unit
Vcc=5.0V
. Symbol
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Propagation Delay,
Any input to Y

__________

2.7

AC ELECTRICAL CHARACTERISTICS
Characteristic

20.0
.

2.0
.

VIN=Vee or GND
10uT::::0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
louT=Oj.lA

.

Icc

0

c

Maximum Quiescent
Supply Current

Vee Vce -0.1
4.2
3.98

tpLH

r---

CL=50pF

tpHL

Input Capacitance

CIN

Power Dissipation Capacitance·

Cpo

(per gate)

Min

Max

Min

Max

7

11

13

7

11

13

ns

5

pF

15

pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

85

II

KS54AHCT
KS74AHCT

21

Dual 4-lnput AND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOl =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C

These devices contain two independent 4-input AND gates.
They perform the Boolean functions Y = A· B. C· D or
Y=A+B+C+E> in positive logic.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs .

. PtN CONFIGURATION

LOGIC DIAGRAM

1A
1A

Vee

18

2D

NC

2C

18
1Y

1C

NC

1D

28

1Y

2A

GNO

2Y

1C
10
2A
28
2Y
2C
20

FUNCTION TABLE
(Each gate)
INPUTS

--

OUTPUT

A

B

C

0

Y

H
L

H

H

H

X
L

X
X

X
X

L

X
X
X

X

L

H
L
L
L
L

X
X
X

c8SAMSUNG
Electronics
.

86

KS54AHCT
KS74AHCT

21

Dual 4-lnput AND Gates

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C
Ceramic Package (J): -12mW/oC from 100°C to 125°C

Supply Voltage Range Vcc. . .
-0.5V to + 7V
DC Input Diode Current. hK
(VI < -0.5V or VI > Vce +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt
500 mW

Recommended Operating Conditions
Supply Voltage. Vcc
4.5V to 5.5V
DC Input & Output Voltages·. VIN. VOUT
OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times. t r • t,
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL .CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 1 0% Unless Otherwise Specified)
KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta = -55°C to +125°C Unit

Ta =25°C

Test Conditions

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V
V
f---

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=- 2OIlA
lo=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2OIlA
lo=4mA
10=8mA

Maximum Input
Current

hN

VIN=VCC or GND

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

VIN=VCC or GND
IOUT=OIlA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
louT=OIlA

--- -------_.-

.6.lcc

Vcc Vcc -0.1
3.98
4.2
0

r-

Vcc -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

IlA

20.0

40.0

2.0
---

IlA
-----

I

2.7

AC ELECTRICAL CHARACTERISTICS
Characteristic

Vcc -0.1
3.84

2.9

mA

3.0

(Input t r • tf~2 ns). AHCT21

KS74AHCT
KS54AHCT
Ta =25°C
Ta = - 40°C to + 85°C Ta = -55°C to +125°C
Unit
Symbol Conditions t Vcc=5_0V
Vcc=5_0V::t10%
Vcc=5.0V::t 10%
--

Typ
Propagation Delay.
Any input to Y

~ CL =50pF
tpHL

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per gate)

Min

8

14

8

14

Min

Max
17~

17

ns

- -- -

pF

5
15

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

Max

pF
fin.

87

II

'Dual 4-lnput NAND Gates
with Open-Drain Outputs

KS54AHCT22
KS74AHCT

FEATURES

DESCRIPTION

- Function, pin-out, speed and drive compatibility with
54174ALS logic family
- Low power consumption characteristic of CMOS
- High-Dri~e-Current outputs:
IOL =8 mA @ VOL =O.5V
- Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
- Wide operating voltage range: 4.5V to 5.5V
- Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape. & Reel), standard DIPs.

These devices contain two independent 4·input NAND
gates. These gates perform the Soolean fucntions
Y-A-S-C-Dor Y=A+B+C+D in positive logic. The
open-drain outputs require pull-up resistors to perform
correctly. They may be connected. to other open-drain
outputs to implement active low wired-OR or active high
wired-AND functions.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components .
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

1A

Vee

A

1B

20

B

NC

2C

C

1C

NC

0

10

2B

1Y

2A

GNO

2Y

(1,9)
(2,10)
(4, 121
(5,13)

~

r'

FUNCTION TABLE
(Each Gate)
INPUTS

OUTPUT

A

B

C

D

Y

H
L
X
X
X

H
X
L
X
X

H
X
X
L
X

H
X
X
'X
L

L
H
H
H
H

Q'SAMSUNG
••
•
~lectroniCS

88

KS54AHCT
KS74AHCT

22

Dual 4-lnput NAND Gates
with Open-Drain Outputs

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee.
-0.5V to + 7V
DC Input Diode Current. hK
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin. 10
(-O.5V < Vo < Vee +O.5V)
±35 rnA
Continuous Current Through
Vee or GND pins
± 125 rnA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt.
500 mW

Recommended Operating Conditions
Supply Voltage. Vee
4.5V to 5.5V
DC Input & Output Voltages * • VIN. Your .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
D
KS54AHC~ -55°C~ +125 C
Max 500 ns
Input Rise & Fall Times. t r • tf ...

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta =-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2O/lA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/lA

Maximum Output
Leakage Current

loz

VIN=VIH or VIL
Vour=Vee

±0.5

±5.0

±10.0

/lA

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

/lA

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

bolee

0

VIN=Vee or GND
10ur=0/lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour = OI-lA

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r • tf~2 ns). AHCT22

KS74AHCT
KS54AHCT
T.= 25°C
T. = -40°C to +85°C Ta = -55°C to +125°C
Symbol Conditions t Vcc=5.0V
Unit
Vcc = 5.0V ± 1 0%
Vcc=5.0V± 10%
Typ

Propagation Delay.
Any input to Y

-

tpLH
tpHL

Input Capacitance

GIN

Power Dissipation Capacitance *

Gpo

CL=50pF
RL =1 kO

Min

Min

Max

29

34

11

18

22

·5
(per gate)

Max

19

15

ns
pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

89

II

27.

KS54AHCT
KS74AHCT

Triple 3-lnput NOR Gates

FEATURES
e
e
e
e
e
e

•

DESCRIPTION

Function, pin-out, speed and drive compatibility with
54174ALS logic family
Low power consumption characteristic of CMOS
High-Drive-Current outputs:
IOl =8 mA @ VOL =O.5V
Inputs and outputs interface directly with TTL, NMOS
.and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: - 55°C to + 125°C
Package options include" small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

These devices contain two independent 3·input NOR gates.
They perform the Boolean functions Y=A+B+C or
Y=Aei3eC in positive logic.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

1A
1A

Vee

1B

1C

2A

1Y

2B

3C

2C

38

2Y

3A

GND

3Y

(1)

'B~

(12)

1Y

1C (13)

2A~

2B~2Y

2C

(5)

3A

(9)

3C

(11)

3A~3Y
•

FUNCTION TABLE
(Each Gate)
INPUTS

OUTPUT

A

B

C

y

H
X
X
L

X
H
X
L

X
X
H
L

·L
L
L
H

ci$SAMSUNG
Electronics

.

90

KS54AHCT
KS74AHCT

27

Triple 3-lnput NOR Gates

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
i;35 mA
Continuous Current Through
Vee or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Max 500 ns
Input Rise & Fall Times, tr , tt

• Absolute Maximum Ratings are those values beyond
whieh permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 10% Unless Otherwise Specified)

Ta =25°C

Test Conditions

KS74AHCT
KS54AHCT
Ta = - 40°C to + 85°C Ta = - 55°C to + 125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OIlA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=201lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

IlA

Maximum Quiescent
Supply Current

lee

2.0

20.0

40.0

Il A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Iec

Vee Vee -0.1
4.2
3.98
0

VIN=Vee or GND
10UT=01lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10UT=OIlA

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r , tt':;;2 ns), AHCT27

KS54AHCT
KS74AHCT
T. =25 0 C
Ta = -40°C to +85°C Ta = -55°C to +125°C
Unit
Symbol Conditions t Vcc=5.0V
Vcc=5.0V± 10%
Vcc=5.0V±10%
Typ

Propagation Delay,
Any input to Y

~

Input Capacitance

CIN

Power Dissipation Capacitance·

CL=50pF

tpHL
CPD

Min

14

10

16

15

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

Min

Max
17
20

ns
pF

5
(per gate)

Max

8

pF
fin.

91

II

KS54AHCT
KS74AHCT

30

8-lnput Nand Gate

FEATURES

DESCRIPTION

• Function, pirH)ut, speed and drive compatibility with
54/74AlS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.SV to S.5V
• Characterized for operation over industrial and
military temperature ranges:
KS14AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C

The '30 contains a single a-input NANO gate. It performs
the boolean functions (in positive logic):

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

Y=A·B·C·O·E·F·G·H
Y=A+B+C+D+E+F+G+H
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps. to Vcc and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION

A

A

Vee

2

B

NC

3

C

H

4

D

G

5

E

INC

6

F

NC

11

y

GND

12

B
C

G
H

FUNCTION TABLE
Inputs A Through H
All Inputs
One or more inputs

Output Y
H
L

dCSAMSUNG
". Electronics

L
H

9"2

KS54AHCT
KS74AHCT

30
8-lnput Nand Gate

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee •........ -0.5V to +7V
DC Input Diode Current. hK
(V, < -0.5V or V, > Vce +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vee +0.5V) . . . .
±35 mA
Continuous Current Through
Vee or GND pins
± 1 25 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage. Vee . . . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages". V'N. VOUT . . OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
.. Max 500 ns
Input Rise & Fall Times. tr • tf

.. Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vec=5V± 10% Unless Otherwise Specified)

Ta=25°C

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

V'H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V'L

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

V'N = V'H or V'L
10=- 2OIAA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

V'N=V'H or V'L
10=201AA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

V'N=Vee or GND

±0.1

±1.0

±1.0

IAA

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

IAA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

b.lee

Vee Vee -0.1
4.2
3.98

V'N=Vee or GND
10UT=0",A
per input pin
V,=2.4V
other Inputs:
at Vcc or GND
10uT=01AA

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr • t~2 ns). AHCT30

KS74AHCT
KS54AHCT
Ta =25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Conditions
t
Unit
Symbol
Vcc=5.0V
Vcc=5.0V:t: 10%
Vcc=5.0V:t:10%
Typ

Propagation Delay
Input CapaCitance
Power Dissipation Capacitance"

Min

Max

Min

Max

6

11

14

tPHL

6

11

14

C'N
Cpo

5
15

~ CL=50pF

.. Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2
t For AC switching test circuits and timing waveforms see section 2.

ns
pF
pF

fin.

93

II

'I,

KS54AHCT
KS74AHCT

32

Quad 2-lnput OR Gates

FEATURES

DESCRIPTION

• Function, pifH)ut, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2-input OR gates,
They perform the Boolean functions Y=A+B or y=A.S,

PIN CONFIGURATION

These devices provide speeds and. drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL. NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damaged due
to static discharge by internal diode clamps to Vee and
ground.

LOGIC DIAGRAM

1A

Vee

18

48

1Y

4A

2A

4Y

28

38

2Y

3A

GND

3Y

1)
1A(2)
18

~
3)

\

1Y

2A~

28~2Y

3A~3Y

38~

4A(~

48(~4Y

FUNCTION TABLE
(Each Gate)
Inputs

Outputs

A

B

Y

H
X
L

X
H
L

H
H
L

c8SAMSUNG
Electronics

94

'KS54AHCT
KS74AHCT

32

Quad 2-lnput OR Gates

Absolute Maximum Ratings·
t Power Dissipation temperature derating:

Supply Voltage Range Vee, . . .
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±35 mA
. Continuous Current Through
Vee or GND pins
± 1 25 mA
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ..... 500 mW

Plastic Package (N): -12mW/o C from 65 ° C to 85 ° C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages *, VIN, Vour . . OV to Vce
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C~ +125°C
... Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C

Test Conditions

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/lA
lo=.,-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O /lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/lA

Maximum Quiescent
Supply Current

lee

2.0

20.0

40.0

/lA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.6.lee

Vee Vee -0.1
4.2
3.98
0

VIN=Vce or GND
10ur=0/lA
per input pin
VI=2.4V
other Inputs:
at Vce or GND
10ur=0/lA

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r , tf~2 ns). AHCT32

KS74AHCT
KS54AHCT
T. =25°C
T. = -40°C to +85°C Ta = -55°C to +125°C
Symbol Conditionst Vcc=5.0V
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Propagation Delay

tpLH

f----

CL=50pF

tpHL
Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

Min

Max
17

9

14

17

ns
pF
pF

15

* Cpo determines the no-load dynamic power dissipation: Po=CPD Vce 2
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG.
Electronics

Min

14

5
(per gate)

Max

8

fin.

95

II

4'I:,
1

KS54AHCT
KS74AHCT

"

B.CD-to Decimal Decoder

FEATURES

DESCRIPTION

•
•
•
•

The' 42 decoder accepts for active-high BCD inputs and
provides 1 0 mutually exclusive active-low outputs, as
shown by logic symbol or diagram. The active-low outputs facilitate addressing otherMSI units with a9tive low
input enables .

•.
•
•
•
•

•

Full decoding of Input Logic
All outputs are High for Invalid BCD Conditions
Also for application as 3-Line to 8-Line Decoders
Function, pin-out, speed and drive compatibility with
54/74ALS logic family
Low power consumpti0!l. characteristic of CMOS
High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4:5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The logiC design of the '42 ensures that all outputs are
high when binary codes greater than nine are applied to
the inputs.
The most significant input, D, produces a useful inhibit function when the '42 is used as a 1-of·a decoder. The D input can also be used as the Data input in an a-output
demultiplexer application.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc 'and
ground.

0

Vee

A

B
3
4

C
0

5

9

6

8

LOGIC DIAGRAM

GND

FUNCTION TABLE
Inputs

No.

Outputs

D

C

B

A

0 1 2 3 4 5 6 7 8 9

0
1
2
3
4

L
L
L
L
L

L
L
L
L
H

L
L
H
H
L

L
H
L
H
L

L
H
H
H
H

H
L
H
H
H

H
H
L
H
H

H H H H
H H H H
H H H H
.L H H H
H L H H

5

L
L
L
H
H

H
H
H
L
L

L
H
H
L
L

H
L
H
L
H

H
H
H
H
H

H
H
H
H
H

H
H
H
H
H

H
H
H
H
H

H
H
H
H
H

L
H
H
H
H

H L H
H L H
H H L
H H L
H H H
H H H

L
H
L
H
L
H

H
H
H
H
H
H

H
H
H
H
H
H

H
H
H
H
H
H

H
H
H
H
H
H

H
H
H
H
H
H

6

7
a
9

INVALID

c8SAMSUNG
Electronics

H
H
H
H
H

H
H
H
H
H

H
H
H
H
H

H
L
H
H
H

H
H
L
H
H

H
H
H
L
H

H
H
H
H
L

H'H
H H
H H
H H
H H
H H

H
H
H
H
H
H

H
H
H
H
H
H

H
H
H
H
H
H

96

KS54AHCT
KS74AHCT

42

BCD-to Decimal Decoder

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ....... -0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee. +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . . .
±35 mA
Continuous Current Through
± 125 mA
Vee or GND pins . . . . . . . . . .
Storage Temperature Range, TSlg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc ........... : .. 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vcc
Operating Temperature
Range
KS74AHCT: --40°C to +85°C
KS54AHCT: -55°C to +125°C
.... Max 500 ns
Input Rise & Fall Times, t r , tf ..

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
~Characteristic

Symbol

(Vec=5V±10% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20",A
lo=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20",A
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

±0.1

±1.0

±1.0

",A

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Maximum Input
Current

hN

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

AC

~Ice

ELECTRICA~

Vee Vce -0.1
4.2
3.98
0

VIN=Vee or GND
VIN=Vee or GND
10UT=0",A
per input pin
VI=2.4V
other Inputs:
at Vce or GND
IOUT=O",A

:

CHARACTERISTICS

Characteristic

(Input t r , tf~2 ns), AHCT42

KS54AHCT
KS74AHCT
Ta =25°C
T. = - 40°C to + 85°C Ta = -55°C to +125°C
Unit
Symbol Conditions t Vcc=5.0V
Vcc=5.0V± 10%
Vcc=5.0V± 10%
Typ

Propagation Delay,
Any input to Y

~

Min

Max

Min

Max

tpLH

11

18

22

tpHL

11

18

22

r - - - - CL=50pF

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

5
(per gate)

ns
pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vce 2 fin.
t For AC switching tes~ circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

97

I

Dual AND-OR-Invert Gates
and Dual AND-OR Gates

KS54AHCY/51158
KS74AHeT ' . "
FEATURES

DESCRIPTION

- Function, pin-out, speed and drive compatibility with
54174ALS logic family
- Low· power consumption characteristic of CMOS
- High-Drive-Current outputs:
IOL =8 rnA @ VOL =O.5V
- Inputs and outputs interf~ce directly with TTL, NMOS
and CMOS devices
- Wide operating voltage range: 4.5V to 5.5V
- Characterized for operation O\fer industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '51 performs the following Boolean functions:
1 Y=(1 A-1 B-1 C)+(1 0-1 E-1 F)
2Y=(2A-2B)+(2C-20)
The '58 performs:
1 Y=(1 A-1 B-1 Cj+(1 0-1 E-1 F)
2Y=(2A-2B)+(2C-2D)
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels . .;rhe input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAMS

PIN CONFIGURATION

'51
1A

Vee

1A
1B
1C

2A

1C

28

18

2C

1F

20

1E

2Y

10

GNO

1Y

1Y
10
1E
1F
2A---'=-'----'.........

28--'J
2C
20--L--~

FUNCTION TABLES
'58
Inputs

1----

Output 1Y

1A

1B

1C

1D

1E

1F

'51

'58

H
X

H
X

H
X

X
H

X
H

X

L
L

H
H

H

L

Any other combination

H

I

2A-----.:.::~.........

Inputs.
- - - - - - - ..
2C
2B
2A
I

I

H
X

H
X

X
H

Output 2Y
2D

'51

'58

X

L
L

H
H

H

L

H

Any other combination

c8SAMSUNG
Electronics

2B

----.,~

98

KS54AHCT
KS74AHCT

51158
I.

Dual AND-DR-Invert Gates
and Dual AND-OR Gates

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI <: -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V <, Vo < Vee +0.5V)
±35 mA
Continuous C~rrent Through
Vee or GND pins. . ..
±125 mA
Storage Temperature Range, T5 tg . . . -65°Cto +150°C
Power Dissipation Per Package, Pdt
500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may_ occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (eitner Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

KS54AHCT
KS74AHCT
Ta:;; -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

Vec -0.1
3.84

Vce -0.1
3.7

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

liN

Maximum Quiescent
Supply Current

Icc

VIN=VIH or VIL
lo=-20~A

lo=-4mA

Vcc Vee -0.1
4.2
3.98

I

V

VIN=VIH or VIL

Additional Worst
Case Supply
Current

.t:..lce

lo=20~A

lo=4mA
lo=8mA.

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=Vce or GND

±0.1

±1.0

±1.0

~A

2.0

20.0

40.0

~A

2.7

2.9

3.0

mA

0

VIN=Vee or GND
louT=O~A

per input pin
VI=2.4V
other Inputs:
at Vee or GND
IOUT=O~A

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr , tf~2 ns), AHCT51, AHCT58

KS54AHCT
KS74AHCT
T. =25°C
T. = - 40°C to + 85°C T.
55°C to + 125°C
Unit
Symbol Conditionst Vcc=5_0V
Vcc=5.0V±10%
Vcc=5.0V± 10%

=-

Typ
Propagation Delay

tpLH

f----

CL=50pF

tpHL
Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per gate)

Min

Max

Min

Max

9

15

18

9

15

18

ns

5

pF

15

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

99

I

.

.

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear

KS54AHCT73
KS74AHCT
FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10l =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
.
(Available Tape & Reel), standard DIPs.

These devices contain two independent J-K negative-edgetriggered flip-flops. A low level at CLR input resets the outputs regardless of the levels of the other inputs. When CLR
is inactive (high), data at the J and K inputs meeting the
setup time reqUirements are transferred to the outputs on
the negative-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to
the rise time of the clock pulse. Following the hold time
interval, data at the J and K inputs may be changed without
affecting the levels at the outputs. These versatile flip-flops
can perform as toggle flip-flops by tying J and K high.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN· CONFIGURATION

lCLK

FUNCTION TABLE

lJ

lClR

10

1K

10

GND

Vee

2ClK
2ClR

2K
20

2J

20

--=-ClR
L
H
H
H
H
H

Inputs
ClK

X

+
+
+
+
H

Outputs

J

K

Q

Q

X
L
H
L
H
X

X
L
L
H
H
X

L

H

00

0

0

L
H
H
L
TOGGLE

0

00

0

LOGIC DIAGRAM
ClR

o

K

c

C

c~
c

c8SAMSUNG
Electronics

100

KS54AHCT
KS74AHCT

73

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vee, ....... -0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended .Operating Conditions
Supply Voltage, Vee . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125J>C
Input Rise & Fall Times, t r , t, . .. . .... Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20",A
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

4.0

40.0

80.0

",A

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

lee

.6.lee

VIN=Vee or GND
louT=O",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
louT=O",A

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

101

II

KS54AHCT,73
KS74AHCT

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear

AC. ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input tr , tf~2 ns),AHCT73
KS74AHCT
KS54AHCT
Ta =25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Unit
Vcc=5.0V
Vcc:;:5.0V± 10%
Vcc=5.0V±10%
Typ

Min

fmax

45

30

Propagation Delay,
ClK to Q or

~

10

17

20

10

17

20

Propagation Delay,
ClR to Q or

~

10

17

20

10

17

20

Maximum Clock Frequency

a

tpHl

a

Setup Time
before ClK~

tpHl

I J or K
I ClR

tsu

Inactive

Hold Time, J or K after ClK~
Pulse Width

Cl=50pF

IClK High or low
IClR low

th
tw

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per flip-flop)

Max

Min

Max

25

8

13

15

8

13

15

-3

0

0

8

13

15

8

13

15

MHz
ns
ns
ns
ns
ns

5

pF

40

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

102

KS54AHCT
KS74AHCT

74

Dual D-Type Positive-Edge-Triggered
Flip-Flops with Preset and Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High·Orive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain two independent positive· edgetriggered D-type flip-flops. Each flip-flop has its own data,
clock, preset and clear inputs and complementary Q and
Q outputs. The preset and clear inputs are active-low and
operate independently of the clock. Data at the D input is
transferred to the Q outputs on the positive transition of
the clock, provided setup requirements have been met.

Vee

1D

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.
.

FUNCTION TABLE

PIN CONFIGURATION

1CLR

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

2CLR

1CLK

2D

1PRE

2CLK

10

2PRE

16

20

GND

20

..

--=~--

PRE
L
H
L
H
H
H
H
H

Inputs

Outputs

= = - - - - - - - - . - - - t---~.---=--

ClR
H
L
L
H
H
H
H
H

ClK

0

Q

X
X
X

X
X
X

t

H
L

L
H

X
X
X

H
L
L
H
H*
H*
H
L
L
H
No Change
No Change
No Change

+

Q

* Both outputs will remain high as long as PRE and CLR are low,
but the output states are unpredictable if PRE and CLR go high
simultaneously.

LOGIC DIAGRAM
~--------------------------~------~

CLK~;

o

D-------I

eLR----------------~------------------------------~

c8SAMSUNG
Electronics

103

I

Dual D..Type Positive-Edge-Triggered
Flip-Flops with Preset and Clear
Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V) . . .
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
.. ± 125 mA
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per Package, Pdt .. , ... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
Range
KS74AHCT; -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, t r , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

KS74AHCT
KS54AHCT
Ta = -40°C to +85"C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/AA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/AA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

/AA

Maximum Quiescent
Supply Current

Icc

4.0

40.0

80.0

/AA

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

Alec

VIN=Vee or GND
10uT=0/AA
per input pin
V,=2.4V
other Inputs:
at Vee or GND
10uT=01lA

-c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

104

KS54AHCT
KS74AHCT

74

Dual D-Type Positive-Edge-Triggered
Flip-Flops with Preset and Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

Maximum Clock

Fr~quency

Symbol Conditions t

f max

Propagation Delay,
ClK to a or

~

Propagation Delay,
PRE or ClR to a or Q

~
tpHL

a

Setup Time
before ClKt

tpHL

I Data

JPRE or ClR Inactive

Hold Time, Data after ClKt
Pulse Width

I elK

High or low

IPRE or ClR low

(Input tr , tf~2 ns), AHCT74

tsu

CL=50pF

KS74AHCT
KS54AHCT
T.=25°C
Ta = - 40°C to + 85°C Ta= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V% 10%
Vcc=5.0V%10'Yo
Typ

Min

55
13

34

Max

Min

Max

30

MHz

18
18

19

9

17

18

9

17

18

13

19

7

12

15

5

8

10

th

0

0

0

tw

9
9

14

17

15

17

ns
ns
ns
ns
ns

Input Capacitance

CIN

5

pF

Power Dissipation CapaCitance *

Cpo

40

pF

* Cpo determines the no-load dynamic power dissipation: PO=CPD VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2. -

c8SAMSUNG'
Electronics

I

105

177.

KS54AHCT '7J:
KS74AHCT. I ~/j

4-Bit Bistable Latches
DESCRIPTION

FEATURES
• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
, IOL 8mA @ VOL O.5V
• Inputs and outputs Interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

=

The '75 and '77 consist of 4 high-speed Ootype latches
that can be used as temporary storage for binary information between processing units. The '75 features complementary a and Q output while the '77 features single
nail output. These devices are ideal for high component
density application.

=

The latches are transparent: when the enable (E) is high,
the a output will follow the data input. When the enable
goes low, the output latches at the level that was set up
at the O-input.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION
'75

FUNCTION TABLE

'77

10

10

10

10

Inputs

10
2D

20
20

20

20

0

E

a

E3 . 4

E'.2

E3· 4

E"2

Vee

qNO

L

L

H

H

H
H

H

L

X

L

00

00

Vee

GNO

3D

NC

3D

40

3Q

4'£)

30
30

NC

40

40

4Q

Outputs

Q*

*0: '75 only
'75

D

Q

LOGIC DIAGRAM
r-- ---- -.----,
I
E

I
I
I

I

COMMON TO ONE
OTHER LATCH

I
I

L-- _________ .l

'77

D

Q

r ---- - - - - - - - - :
E
:
I

COMMON TO ONE
OTHER LATCH

I

I

L _ _ _ _ _ _ _ _ _ _ _ _ -'

cRSAMSUNG
•• Electronics

106

KS54AHCT
KS74AHCT

75177

4-Bit Bistable Latches

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW{OC from 65°C to 85°C

Supply Voltage Range Vcc, ....... -0.5V to +7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Va > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Va < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, Tstg . . . - 65 ° C to + 150 ° C
Power Dissipation Per Package, Pdt . . . .
500 mW

Recommended Operating Conditions
Supply Voltage, Vcc
.... .. ..
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf . .
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 10% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ
Minimum High-Level
Input Voltage

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
~utput Voltage

VOH

VIN = VIH or VIL
lo=- 2OflA
lo=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN = VIH or VIL
lo=20flA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

flA

Icc

VIN=VCC or GND
louT=OflA

8.0

80.0

160.0

flA

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

per input in
VI=2.4V
. .t:.lec other Inputs:
at Vcc or GND
lour = OflA

=8SAMSUNG
Electronics

Vee Vce-0. 1
4.2
3.98
0

107

I

'71:177

KS54AHCT
KS74AHCT I ~I

j

4-Bit Bistable, Latches

.

AC' ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r • t~2 ns). AHCT75
KS74AHCT
KS54AHCT
T.=25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Vee=5.0V
Unit
Vee = 5.0V::!:: 10%
Vee=5.0V::!:: 10%

Typ

Min

Max

Min

Max

10

16

20

10
10,5

16

20

15

18

tpHL

9

15

18

Data Set up Time D to Enable

tsu

Data Hold Time Enable to D

th

6
10

CIN

5

Propagation Delay
E to Q or

a

Propagation Delay
D to Q or Q

Input Capacitance

~

CL=50pF,

~

CL=50pF

tpHL

10

12

0

Characteristic

Propagation Delay
E to Q
Propagation Delay
D toO'

Symbol

Conditions t

~

CL=50pF

tpLH
r---tPHL

CL=50pF

tPHL

ns
pF
pF

(Input tr • tf~2 ns), AHCT77
KS54AHCT
KS74AHCT
Ta=25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Unit
Vee = 5.0V
Vee 5.0V::!:: 10%
Vee=S.OV::!:: 10%

=

Typ
8

Max

Min

Max
17

8

14

8

13

17
15

8

13

15

6
0

Input Capacitance

CIN

5

Power disipation Capacitance *

Cpo

tsu

Min

14

th

Data Set up Timejl-kJc-nable
Data Hold lTme Enable to D

ns
ns

10

Power disipation Capacitance *
Cpo
* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

AC ELECTRICAL CHARACTERISTICS

ns

12

10

0

5

0

ns
ns
ns

6

ns
pF
pF

* Cpo determines the no·load dynamic power dissipation: Po=Cpo VCC 2 ' fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

108

KS54AHCT
KS74AHCT

76

Dual J-K Flip-Flops with Preset and Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10l =8 rnA @ VOL =O.5V
• Inputs and outputs interface directty with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These parts consist of two negative-edge-triggered J-K flipflops with Independent J, K, preset, clear and clock inputs
and complementary outputs. The J-K inputs at each flipflop are enabled when the clock goes high. The input data
are transferred to the outputs on the negative-going edge
of the clock pulse, provided the setup requirements have
been met.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

I

FUNCTION TABLE

PIN CONFIGURATION

lCU<

lK

lPRE

10

lClR
lJ

lQ

Inputs

GND

Vee

2K

2CU<
2PRE

20
20

2ClR

2J

Outputs

PRE

CLR

CLK

J

K

Q

Q

L
H
L
H
H
H
H
H

H
L
L
H
H
H
H
H

X
X
X

X
X
X

X
X
X

H
L
H*

L
H
H*

~

L
L
H
H

00

0

~

L
H
L
H

H
L
L
H
TOGGLE

H

X

X

00

~

~

0

0

0

• Both outputs will remain high as long as preset and clear are low,
but the output states are unpredictable if preset and clear go high
simultaneously.

LOGIC. DIAGRAM

K

C

e

c~
PRE------------~--------~

c8 !e!'lSUNG

e

109

KS54AHCT '7~
KS74AHCT IU,'

Dual J-K Flip-Flops with Preset and Clear

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/o C from 65°C to 85°C

Supply Voltage Range Vee. . ...... -0.5V to + 7V
DC Input Diode Current. hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
. . . . . . . . . . . .. ± 125 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage. Vee . . . . . .
4.5V to 5.5V
DC Input & Output Voltages·. VIN. VOUT .. OV to Vec
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times. tr • tf . . ..
. .. Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 10% Unless Otherwise Specified)

Ta.=25°C

Test Conditions

Typ

KS74AHCT
KS54AHCT
T a =-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

4.0

40.0

80.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.6.lee

VIN=Vee or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lOUT = O",A

=8SAMSUNG
Electronics

Vee Vee -0.1
3.98
4.2
0

110

KS54AHCT
KS74AHCT

76

Dual J-K Flip-Flops with Preset and Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr , tf~2 ns), AHCT76

Symbol Conditions t

KS54AHCT
KS74AHCT
T.=25°C
T.= -40°C to +85°C Ta= -55°C to +125°C
Unit
Vcc=5.0V
Vee =5.0V± 10%
Vcc=5.0V±10%

Min

Typ

Min

,Maximum Clock Frequency

f max

45

30

Propagation Delay,
ClK to Q or 0

tpLH

17

20

I---

10
10

17

20

Propagation Delay,
PRE or ClR to Q or Q

I---

tpLH

10

17

20

tpHL

10

17

20

Setup Time
before ClK.j.

IJ or K

IPRE or CLR Inactive

Hold Time, Data after ClK.j.
Pulse Width

IClK High or low
IPRE or CLR low

tpHL

CL=50pF

tsu
th
tw

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

17

20

10

17

20

-3

0

0

8

13

15

8

13

15

.qsSAMSUNG
Electronics

MHz
ns
ns
ns
ns
ns
pF
pF

40

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2
t For AC switching test circuits and timing waveforms see section 2 .

Max

25

10

5
(per flip-flop)

Max

fin.

I

111

'KS54AHCT 78~
KS74AHCT

Dual J~K Flip-Flops with Preset,
Common Clear'; Common· Clock

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74AlS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOl =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V t05.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These parts consist of two negative·edge-triggered J-K flipflops with independent J, K and preset inputs and complementary outputs. The clear and clock inputs are common to both flip-flops. The J-K inputs are enabled when
the clock goes high. The input data are transferred to the
outputs on the negative-going edge of the clock pulse, provided the setup requirements have been met.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
. CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components .
A" inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

PIN CONFIGURATION

Inputs

ClK

1K

1PRE

10

1J

1~

Vee

GND

ClR

2J

2PRE

2'0

2K

20

I

Outputs

CLR

ClK

J

K

Q

Q

L
H
L
H
H
H
H
H

H
L
L
H
H
H
H
H

X
X

X
X

X
X

X

X
L
L
H
H

L
H
H*

00

00

+
+

X
L
H
L
H

H
L
H*

H

X

X

+
~

!

--'

PRE

H
L
H
L
TOGGLE

00

.00

* Both outputs will remain high as long as preset and clear are low,
but the output states are unpredictable if preset and clear go high
simultaneously.

LOGIC DIAGRAM

K

c

c

c~

PRE----------~--------~

c8SAMSUNG
Electronics

c

112

KS54AHCT
KS74AHCT

78

Dual J-K Flip-Flops with Preset,
Common Clear &. Common Clock

Absolute Maximum Ratings*
Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V) . . .
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . .
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee .............. 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf ...... .
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

whieh permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Test Conditions

KS54AHCT
KS74AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OIolA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2OIolA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

lolA

Maximum Quiescent
Supply Current

lee

4.0

40.0

80.0

lolA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.6.lee

VIN=Vee or GND
10UT=01olA
per input pin
VI=2.4V
other Inputs:
at Vec or GND
10UT=01olA

Vee Vee -0.1
4.2
3.98
0

--

=8SAMSUNG
. Erectronics

113

II

. Dual J-K Flip-Flops with Preset,
Common Clear & Common Clock

KS54AHCT·::¥8
KS74AHCT

AC ELECTRICAL CHARACTERISTICS

(Input t r ,

KS74AHCT
KS54AHCT
T.=25°C
T.= -40°C to +85°C T.= -55°Cto +125°C
Unit
Symbol Conditions t Vce=5.0V
Vee=5.0V:t10%
Vee = 5.0V:t 10%

Characteristic

f maX

Maximum Clock Frequency
Propagation Delay,
elK to Q or Q

tpLH
r--CL=50pF
tpHL

Propagation Deiay,
PRE or ClR to Q or Q

~

Setup Time
before ClK-l-

Pulse Width

tPLH

IJ or K

-

..

IClK High or low
IPRE or ClR low

tsu
th

- - - -f---.

tw

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

Typ

Min

45

30

- - - - - _...

Max

MHz

17

10

17

10

17

10

17

-3

0

8

13

8

13

20

_- _

10

.... _ - - - -

ns

20

1 - - - - - - - -I - - -

20
--

ns

20
----

20

--

r--ns

20

- - - - - - --_._._-

0

-------._- - - - - - - -

------

--

15
_._---

------

ns
ns

15
pF
pF

40

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2

Min

25

17

10

5
(per flip-flop)

Max

17

10

r--------I-.

tpHL

IPRE or ClR Inactive

Hold Time, J or K after ClK-l-

tf~2 ns), AHCT78

fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

i

114

KS54AHCT
KS74AHCT

86

Quad 2-lnput Exclusive-OR Gates
DESCRIPTION

FEATURES
• Function, pin-out, speed and drive compatibility with
S4/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.SV
• Inputs and outputs interface directly with TTL, NMOS
, and CMOS devices
• Wtde operating voltage range: 4.SV to S.SV
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KSS4AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

These devices contain four independent 2,·input ExclusiveOR gates. They perform the Boolean functions y=A$B or

y=AB+AB.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to .
static discharge by internal diode clamps to Vee andground.

LOGIC DIAGRAM

1A

Vee

18

48

1Y

4A

2A

(2)
1A~
18

I

1Y

2A~
28 (5)
2Y

4Y

28

38

2Y

3A

GND

3Y

38 (10)

3A~

3'0'

4A~
48 (13)

4Y

FUNCTION TABLE
(Each Gate)
Inputs

Output
Y

A

B

L
L

L

L

H

H
H

L

H
H

H

L

c8SAMSUNG
Electronics

115

KS54AHCT86
KS74AHCT

Quad 2-lnput Exclusive-OR Gat$s

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) . . .. ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . .
± 125 mA
Storage Temperature Range, T8 1g ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vec . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN, Your .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ

KS54AHCt
KS74AHCT
Ta: -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10==-20jJA
10==-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20jJA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

jJA

2.0

20.0

40.0

jJA

2.7

2.9

3.0

mA

Maximum Quiescent
. Icc
Supply Current
Additional Worst
Case S.upply
Current

Ll.lee

VIN=Vee or GND
10uT=OjJA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=OjJA

c8SAMSUNG
Bectronics

Vee Vee -0.1
4.2
3.98
0

116

'KS54AHCT
KS74AHCT

86

Quad 2-lnput Exclusive-OR Gates

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr ,

Ta =25°C
Vcc =5.0V
Typ

tt .... 2 ns), AHCT86
KS74AHCT
Ta= -40°C to +85°C
Vcc=5.0V±10%
Min

Max

KS54AHCT
Ta=-55°Cto +125°C
Vcc=5.0V± 10%
Min

tpLH

10

16

19

tpHL

10

16

19

10

16

10

16

20
20

Propagation Delay,
A or B to Y (Other Input Low)

r----

Propagation Delay,
A or B to Y (Other Input High)

~

CL=50pF

tPHL

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per flip-flop)

Unit

Max

ns
ns

5

pF

15

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 ' fin.
t For AC switching test circuits and timing waveforms see section 2.

II

c8SAMSUNG
Electronics
,

117

KSS4AHCT
KS74AHCT

90192193

Oecade,Oivide by 12, and

Binary Counters

FEATURES

DESCRIPTION

• Various counting mode.

These devices contain four master-slave flip· flops and addition gating to provide a divide by a counter and a threestage binary counter for which the count cycle length is
divide by five for the. AHCT90, divide by six for the
AHCT92, and divide by eight for the AHCT93, All of these
counters have a gated zero reset and the AHCT90 also
has gated set·to·nine inputs for use in BCD nine's complement applications.
To use their maximum count length (decade, divide-bytwelve, or four bit binary), the CKB input is connected to
the QA output. The input count pulses are applied to CKA
~nd the outputs are as described in the appropriate truth
table. A symmetrical divide·by-the count can be obtained
from the AHCT90 counters by connecting the Qo output
to the CKA input and applying the input count to the CKB
input which gives adivide-by-ten square wave at output

• Function, Pin-out, speed and drive compatibility with
54174 ALS logic family.
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
ioL =8mA @ VOL=O.5V
• Input and output interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: - 55°C to + 125°C
• Package options include plastic "small outline"
packages, standard plastic and ceramic 3t10-mil DIPs

QA.

PIN CONFIGURATION

'90

'92

'93

CKA

CKB

CKA

CKB

MR1

NC

NC

NC

MR1

NC

MR2

Q,

Q,

MR2

QA

NC

QD

Vee

GNO

QB

Vee

GND

NC
Vee

CKA

QD

GND

MS1

QB

MR1

Qe

NC

QB

MS2

'Q e

MR2

QD

NC

Qc

:8~SUNG

118

KS54AHCT
KS74AHCT

90192193

Decade, Divide by 12, and
Binary Counters

FUNCTION TABLE

'90

'90

'92

BCD COUNT SEQUENCE
(See Note A)

BI-QUINARY (5-2)
(See Note B)

COUNT SEQUENCE
(See Note C)

Output

Count

0
1

2
3
4

5
6
7

8
9

Qc

Qs

QA

L
L
L
L
L
L
L
L
H
H

L
L
L

L
L
H
H
L
L
H
H
L
L

L
H
L
H
L
H
L
H
L
H

L
H
H
H
H
L
L

Output

Count

~"-

QD

=:l

0
1

2
3
4

5
6
7
8
9

QA

QD

L
L
L
L
L
H

L
L
L
L
H
L
L
L
L
H

H
H
H
H

Qc
L
L
H
H
L
L
L
H
"H
L

Output

Count

-~--~-~-~-

Qs
L
H
L
H
L
L
H
L
H
L

0
1
2
3

I

4

5
6
7

8
9
10
11

I

QD'

Qc

Qs

QA

L
L
L
L
L
L
H
H
H
H
H
H

L
L
L
L
H
H
L
L
L
L
H
H

L
L
H
H
L
L
L
L
H
H
L
L

L
H
L
H
L
H
L
H
L
H
L
H

'93
COUNT SEQUENCE
(See Note C)

Count

0
1
2
3
4
5
6
7
8

9
10
11
12
13
14
15

'90
RESET/COUNT TRUTH TABLE

Output

--

r--~

Reset Inputs

Output

-~

QD

Qc

Qs

QA

MR1

MR2

MS1

MS2

aD

Qc

L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H

L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H

L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H

L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H

H
H
X
X
L
L
X

H
H
X
L
X
X
L

L
X
H
X
L
X
L

X
L
H
L
X
L
X

L
L
H

L

I
I

c8SAMSUNG
Electronics

QA

L
L
L
L
L
COUNT
COUNT
COUNT
COUNT

L
L
H

'92, '93
RESET/COUNT TRUTH TABLE
Reset Inputs

Note A: Output QA is connected to input CKB for BCD count.
Note B: Output QD is connected to input CKA for bi-quinary
count.
Note C: Output QA is connected to input CKB.
Note D: H=High Level, L=Low Level, X=Don't Care.

Qs

Output

MR1

MR2

QD

H
L
X

H
X
L

L

Qc

Qs

L
L
COUNT
COUNT

QA
L

119

II

KS54AHCT
KS74AHCT

90192193

Decade, Divide by 12, and
Binary Counters

LOGIC DIAGRAMS
'90

'92

(6)

MS1:::j[J~______1
MS2 (7)
(14)

CKA - - - - - 1 - - - 6

(9)

CKB_(1_)__~~____~_

.Os

(S)Oe

(11)

00

'93

Note: The J.K inputs shown without connection are for
reference only and are functionally at a high state.

c8SAMSUNG
Electronics

120

~~~::~g~ 90192193

Decade, Divide by 12, and
Binary Counters

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C
Ceramic Package (J): -12mW/oC from 100°C to 125°C

Supply Voltage Range Vee, ....... -0.5V to +7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V) . . .
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, Your . . OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , t, . . .
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not im~lied. long exposure to these conditions may affect device reliability.

• Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vec=5V± 10% Unless Otherwise Specified)

T.=25°C

Symbol Test Conditions

Typ

KS74AHCT
KS54AHCT
T.= -40°C to +85°C T.= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum low-level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-level
Output Voltage

VOH

VIN=VIH or VIL
10=-20,.,A
10=-4mA

Vee -0.1.
3.84

Vee -0.1
3.7

V

Maximum lOW-level
Output Voltage

VOL

VIN=VIH or VIL
10=20,.,A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

,.,A

Maximum Quiescent
Supply Current

Icc

VIN=Vee or GND
10ur=0,.,A

8.0

80.0

160.0

,.,A

~Iec

per input in
VI=2.4V
other Inputs:
at Vee or GND
10ur=0,.,A

2.7

2.9

3.0

mA

f---

Additional Worst
Case Supply
Current

=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

121

II

KS54AHCT
KS74AHCT

90

Decade Counter

AC ELECTRICAL CHARACTERISTICS' (Input tr • t~2
Characteristic

Symbol

Maximum clock

CKA to OA

Frequency

CKB to Os

Condltlons t

fmax

ns). AHCT90

KS74AHCT
KS54AHCT
TA=25°C
TA= -40°C to +85°C TA= -55°C to +125°C
Unit
Vee=5.0V
Vee = 5.0V:t 1o'Yo
Vee=5.0V:t 10%
Typ

Min

50

40

Max

35

25

20

18

Min

Max

MHz

8

14

17

8

14

17

21

42

50

21

42

50

8

14

17

9

15

18

14

28

33

14

28

33

14

28

33

14

28

33

tpLH

13

25

30

ns

Maximum Propagation
Delay MS to Os. Oc

tpHL

18

35

42

ns

Maximum Propagation
Delay MR to any 0

tpHL

18

35

42

ns

Maximum Propagation
Delay. CKA to OA

~

Maximum Propagation
Delay CKA to 00

~

Maximum Propagation
Delay CKB to Os

~

Maximum Propagation
Delay CKB to Oc

~
tPHL

Maximum Propagation
Delay CKB to 00 .

~
tpHL

Maximum Propagation
Delay MS to OA. 00

f------

Pulse Width

tpHL

tpHL
tpHL

-

CL=50pF

f------

CKA

10

15

20

CKB

20

30

40

10

15

20

10

15

20

24

29

MS

tw

MR
Recovery Time
MR to CKA. CKB

tree

17

Maximum Input Capacitance

CIN

5

Power DiSsipation Capacitance

Cpo

ns
ns
ns
ns
ns

ns

ns
pF
pF

*CPO determines the no-load dynamic dissipation: Po=Cpo Vcc 2 f+lee Vee
For AC Switching test circuits and timing waveforms see sections

t

c8SAMSUNG
Electronics

122

KS54AHCT
KS74AHCT

92

Divide-by· Twelve Counter

AC ELECTRICAL CHARACTERISTICS
Symbol

Characteristic

Maximum clock

CKA to OA

Frequency

CKB to Os

Condltlons t

f max
tpLH

Maximum Propagation
Delay, CKA to OA

,-------

tpHL

(Input tr• tf~2 ns), AHCT92
KS74AHCT
KS54AHCT
TA==25°C
TA= -40°C to +85°C TA= -55°C to +125°C
Unit
Vec=5.0V
Vee = 5.0V:t 10%
Vee==5.0V:t 10%

Min

Typ

Min

50

40

35

25

20

18

Max

Max

MHz

8
-8

13

15

14

17

21

42

48

21

42

48

Maximum Propagation
Delay CKA to 00

~

Maximum Propagation
Delay CKB to Os

~

8

14

16

tpHL

10

15

17

Maximum Propagation
Delay CKB to Oc

tpLH
r-----tpHL

10

14

16

11

16

21

Maximum Propagation
Delay CKB to 00

~

tpHL

Maximum Propagation
Delay MR to any 0

CL=50pF

14

28

33

tpHL

14

20

24

tpHL

18

35

42

CKA

10

~---

Pulse Width

CKB

tw

20

--

15

20

30

40

.-----~

MR

15

20

24

29

tree

17

Maximum Input Capacitance

C,N

5

Power Dissipation Capacitance

Cpo

ns
ns
ns
ns
ns

ns

~-

10

Recovery Time
MR to CKA. CKB

ns

ns
pF
pF

*CPO determines the no-load dynamic dissipation: Po=Cpo Vee2f+lee Vee

t For AC Switching test circuits and timing waveforms see sections

c8SAMSUNG
Electronics

123

I

KS54AHCT
KS74AHCT

93

4-Bit Binary Counter Divide
by Two and Eight

AC ELECTRICAL CHARACTERISTICS
Symbol

Characteristic

Maximum clock

CKA to QA

Frequency

CKB to Os

Condlt/ons t

fmax

(Input tr• tf~2 ns), AHCT93
KS74AHCT
KS54AHCT
TA=25°C
TA= -40°C to +85°C TA= -55°C to +125°C
Unit
Vee 5.0V
Vee = 5.OV:t 10%
Vee=5.0V:t 10% _

=

Typ

Min

50

40

Max

35

25

20

18

Min

Max

MHz

B
B

13

15

tPHL

14

17

tpLH

30

56

70

tpHL

30

56

70

8

14

17

9

15

18

~

16

29

34

tPHL

17

29

34.

Maximum Propagation
Delay CKB to 00

~

24

42

50

tpHL

24

42

50

Maximum Propagation
Delay MR to any 0

tPHL

17

35

42

10

15

20

tw

20
10

30
15

40

24

29

Maximum Propagation
Delay. CKA to OA

~

Maximum Propagation
Delay CKA to 00

r----

Maximum Propagation
Delay CKB to Os

~

Maximum Propagation
Delay CKB: to Oc

tpHL

CKA
Pulse Width

CKB
MR

CL=50pF

Recovery Time
MR to CKA. CKB

tree

17

Maximum Input Capacitance

CIN

5

Power Dissipation Capacitance

Cpo

ns
ns
~

ns
ns
ns
,ns

ns

20
ns
pF
pF

*CPO determines the no-load dynamic dissipation: Po=Cpo Vcc2f+lcc Vcc
t For AC Switching test circuits and timing waveforms see sections

c8SAMSUNG
Electronics

124

KS54AHCT
KS74AHCT

107

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174AlS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized . for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs,

These devices contain two independent J-K negative-edgetriggered flip-flops. A low level at the CLR input resets the
outputs regardless of the levels of the other inputs. When
CLR is inactive (high). data at the J and K inputs meeting
the setup time requirements are transferred to the outputs
on the negative-going edge of the clock pulse. Clock trig- ,
gering occurs at a voltage level and is not directly related
to the rise time of the clock pulse. Following the hold time
interval, data at the J and K inputs may be changed without
affecting the levels at the outputs. These versatile flip-flops
can perform as toggle flip-flops by tying J and K high.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

1J

Vee

10

1CLR

10
, 1K

1CLK
2K

20

2CLR

20

2CLK

GND,

II

FUNCTION TABLE

PIN CONFIGURATION

2J

Inputs

Outputs

ClR

ClK

J

K

a

L
H
H
H
H
H

x

x

L

H

J,
J,
J,
J,

L
H
L
H
X

X
L
L
H
H
X

00

0

H

a
0

H
L
L
H
TOGGLE

00

0

0

LOGIC DIAGRAM

K-I-Jr-_

Q

CLK~:
CLR---------------~ ~----------------~--------~

c8SAMSUNG
Electronics

125

KS54AHCT'
KS74AHCT

107

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . .
±35 mA
Continuous Current Through
Vee or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
......... 4.5V to 5.5V
DC Input & Output Voltages·, Y,N, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C~ +125°C
Input Rise & Fall Times, tr , tf ....
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
ofthe device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 1 0% Unless Otherwise Specified)

0=-J.
KS74AHCT
KS54AHCT
Ta =25 C
Ta = -400C to +85°C Ta = -55°C to +125°C Unit

Test Conditions

Guaranteed Limits

Typ

Minimum High-Level
Input Voltage

V,H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V,L

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

V,N=VIH or V,L
10=-20/lA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

V,N=VIH or V,L
lo= 2O/lA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/lA

4.0

40.0

80.0

/lA

2.7

2.9

.3.0

mA

f-----

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

lllee

V'N=Vee or GND
IOUT=O/lA
per input pin
V,=2.4V
other Inputs:
at Vee or GND
lour=O/lA

=8SAMSUNG
Electronics

Vee Vec -0.1
4.2
3.98
0

--

126

KS54AHCT
KS74AHCT

107

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r , tf~2 ns), AHCT107
KS74AHCT
KS54AHCT
Ta=25°C
Ta = -40°C to +85°C To = -55°C to +125°C
Unit·
Vee=5.0V
Vee = 5.0V ± 10%
Vee=5.0V± 10%

--

- - - - r---~-

Maximum Clock Frequency

fmax

Min

45
r--10

30

Max

Min

Max

25

MHz

17

20

10

17

20

tpLH

10

17

tpHL

10

17

~

Propagation Delay,
ClK to Q or Q

Typ

tpHL

CL =50pF
~-

Propagation Delay,
ClR to Q or Q
Setup Time
before ClK~

IJ

or K

I ClR Inactive

Hold Time, J or K after
Pulse Width

ClK~

I ClK High or low

I ClR low

- - 1-------

10

tsu
th
tw
CIN

Power Dissipation Capacitance *

Cpo

17

20

17

20

--c--(per flip-flop)

--

-~

0

0

8

13

15

8

13

5

' - . ..

15

_--

----

40

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

20

--

-3
f--------

ns

-------

---------

10

Input Capacitance

20

ns
- - r--

ns
ns

--

ns

_.- pF
pF

fin.

I

127

KS54AHCT
KS74AHCT

109

Dual J-K Positive Edge-Triggered
Flip-Flops with Preset and Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74AlS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C, to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain two positive,-edge-triggered J-R flipflops with independent preset and clear inputs and complementary Q and Q outputs. The present and clear inputs
are active-low and operate independently of the clock Data
at the J and R inputs are transferred to the ouptutson the
positive transition of the clock provided setup requirements
have been met. These versatile flip-flops can perform as
toggel flip-flops by grounding K and tying J high. They
can also perform as D-type flops if J and R are tied together.
These devices provide speeds and drive capability
equivalent to their ALST \ '_ counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

1CLR
1J

1K
1CLK
1~

10
1Q
GND

FUNCTION TABLE

Inputs

Vee

2CLR
2J
2K
2CLK
2PRE
20
2Q

Outputs

PRE

ClR

ClK

J

K

Q

L
H
L
H
H
H
H
H

H
L
L
H
H
H
H
H

X
X
X

X
X
X
L
H
L
H
X

X
X
X
L
L
H
H
X

H
L
L
H
H*
H*
L
H
TOGGLE

t
t
t
t
L

Q

Qo

0

H

L

Qo

0

0

0

'Both outputs will remain high as long as PRE and CLR are low.
but the output states are unpredictable if PRE and CLR go high
simultaneously,

LOGIC DIAGRAM
PRE----------------------------------~--------~

o

CLK~:
CLR------------------------~~--------------------------------J

c8SAMSUNG
Electronics '

128

KS54AHCT
KS74AHCT

109''

Dual J-K Positive Edge-Triggered
Flip-Flops with Preset and Clear

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) .. ,
±35 mA
Continuous Current Through
Vee or GND pins. ,
±125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt . , , ... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall 'Times, tr , tf
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ
Minimum High-Level
Input Voltage

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta = -55°C to + 125°C Unit
Guaranteed Limits

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/AA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/AA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

/AA

Maximum Quiescent
Supply Current

Icc

4.0

40.0

80.0

/AA

2.7

2.9

3.0

mA

Additional Worst
. Case Supply
Current

~Iee

VIN=Vee or GND
10uT=0/AA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10UT=0/AA

c8SAMSUNG
Electronics
,

Vee Vee -0.1
4.2
3.98
0

129

I

Dual J·l? Positive Edge-Triggered'
Flip-Flops with Preset and Clear
AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr , tf~2 ns), AHCT1 09

KS74AHCT
KS54~HCT
Ta =25°C
Ta= -40°C to +85°C Ta=-55°Cto +125°C
Symbol Conditions t Vee = 5.0V
Unit
Vee=5.0V:t 10%
Vee=5.0V:t10%
- , -

Maximum Clock Frequency

f max

Propagation Delay,
ClK to
or

tpLH

a

a

Propagation Delay,
PRE or ClR toO or Q
Setup Time
before ClKt

I Data
I PRE or ClR Inactive

Hold Time, Data after ClKt
Pulse Width

IClK High or low
I PRE or ClR low

-

tpHL

-

Min

55

34

r------

17

17

10

10
.... _--

-

--

7

tsu

=8 ~t!'ISUNG

14

1---"'---

10

14
--,,-,-

12

5

8

- - f---------- 1-----.. _--1---

0 0, - -1-.... _
1---"--14
9

th
tw

--I---'

9
CIN

--"-

MHz

15
~

20
-,,----~

20

- -

1---'--

..

1---'--

,

20

ns

20

15
-."

10
0

~-

- - I-----

ns

--

1 - - - - - - - !-----------

- - - - - - r---~~-- - - - - - 1 - '

_~--L,_ _
Power Dissipation Capacitance *
Cpo
40 I
* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fin,
t For AC switching test circuits and timing waveforms see section 2.
Input Capacitance

.-

- - - ' - - ~-- --,,-_._- c----- f----,_

Max

30_._. __ .

10

CL =50pF

Min

Max

1 - - ---

tpLH
tpHL

Typ

._.

--,

ns
'-----

ns

.., - , - "..-- , - - - - - - - - - r - - -

17

ns

17

pF
pF

130

KS54AHCT
KS74AHCT

112

Dual J-K Negative-~dge-Triggered
Flip-Flops with Preset and Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C

These parts consist of two negative·edge-triggered J-K flipflops with independent J, K, preset, clear and clock inputs
and complementary outputs. The J-K inputs at each flipflop are enabled when the clock goes high. The input data
are transferred to the outputs on the negative-going edge
of the clock pulse, provided the setup requirements have
been met.

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

lCLK
lK
lJ
lPRE
10
10
.20
GND

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

Vee

lCLR
2CLR
2CLK
2K
2J
2PRE
20

Outputs

Inputs
--

-~

Q

PRE

CLR

CLK

J

K

Q

L
H
L
H
H
H

H
L

X
X
X

X
X
X

X
X
X

H
L
H*

L
H
H*

.j.

L
H
L

L
L

00

00

H

L

H

L

H

H

H

1.
H
H
H
H
H

.j.
.j.

H

H

X

~

TOGGLE

I

00

00

* Both outputs will remain high as 10n'g as PRE and CLR are low,
but the output states are unpredictable if PRE and CLR go high

simultaneously.

LOGIC DIAGRAM
PRE------------------------------------~---------_.

o
K

CLR---------------------------*----------------________________~

c8SAMSUNG
Electronics

131

Dual J-K Negative-Edge-Triggered
Flip-Flops with Preset and Clear

KS54AHC'Y'1,12
KS74AHCT
Absolute Maximum Ratings*

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ....... -O.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI> Vee +0.5V) . . .
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) . .
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . . . . . .
±35 mA
Continuous Current Through
Vee or GND pins .. . .
.. ± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee .............. 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
.
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond

, Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

Ta=2S0C

Symbol Test Conditions

Typ

KSS4AHCT
KS74AHCT
Ta= -40°C to +8S oC Ta= -55°C to +12SoC Unit
Guaranteed Limits

Minimum High-Level
Input yoltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND ,

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

4.0

40.0

80.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Alec

VIN=Vee or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
.0

132

KS54AHCT
KS74AHCT

112

Dual J-K Negative-Edge-Triggered
Flip-Flops with Preset and Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r , tf~2 ns), AHCT112

KS54AHCT
KS74AHCT
T.=25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Symbol Condltlons t Vcc=5.0V
Vcc=5.0V%10%
Vcc=5.0V% 10%
Typ

Min

Maximum Clock Frequency

fmax

50-

30

Propagation Delay,
ClK to Q or Q

tPLH

10

17

20

10

17

20

10

17

20

10

17

20

t---

tpHL

Propagation Delay,
PRE orClR to Q or Q
Setup Time
before ClK~

IJ or K

IPRE or ClR Inactive

Hold Time, Data after
Pulse Width

ClK~

IClK High or low
I PRE or ClR low

CL=50pF

~
tpHL
tsu
th
tw

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo (per flip-flop)

Max

Min

Max

25

10

17

20

10
0

17

20

0

0

10

17

20

6

10

15

MHz
ns
ns
ns
ns
ns

5

pF

40

pF

* Cpo determines the no·load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2 .

.c8SAMSUNG
Electronics

II

133

KS54AtlCT
KS74AHCT

123

Dual Retriggerable -Monostable
Multivibrator with Clear

FEATURES

DESCRIPTION

• Simple pulse width formula tw = 0.45RC
DC triggered from active HIGH or active Low inputs
• Retriggerable for very long output pulses up to 100 %
duty cycle
• Overriding clear terminates output pulse
• Schmitt trigger A & B inputs allow infinite rise and
fall times on these inputs
• Functions, pin-out, speed and drive compativility with
54/74ALS logic family
• Low power consumption characteristic of. CMOS
• High drive current outputs:
IOL=8mA @ VOL=0.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range; 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '1 23 contains dual retriggerable monostable
multivibrators with output pulse width control by three
methods.
The basic pulse time is programmed by selection of an externed resistor (Rext) and capacitor (Cext). The external
resistor and capacitor are normally connected as shown
timing component.
Once triggered, the basic output pulse width may be extended by retriggering the gated active Low going edge
input (Ai) or the active HIGH going edge input (Si). Sy
repeating this process, the output pulse period (nQ=HIGH,
nQ=LOW) can be made as long as desired. Alternatively
an output delay can be terminated at any time by a Lowgoing edge on input CLR, which also inhibits the triggering.
An internal connection from CLR to the input gates makes
it possible to trigger the circuit by a positive-going signal
at input CLR as shown in the function table when
CExT>10nF, the typic~1 output pulse width is defined as;
tw=0.45XREXTXCEXT(typ).
Where tw is in seconds. R is in ohm. and C is in fards.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

PIN CONFIGURATION

FUNCTION TABLE
Inputs

~-----

A1

Vee

B1

REXT1/CEXT

ClR1

CEXTl

0"1

Q1

Q2

02

C EXT2
REXT2/CEXT

CLR2

B2

-----------

Outputs
--

------ ---- 1------ -- - - ,

CLR

A

B

Q

a

L
X
X
H
H
t

x

X
X
L
t
H
H

L
L
L

H
H
H

H
X
L
,I.

L

Jl.

lS

JL
1l..

U
U

A2

H=
L=
X=
t=
,1.=
Il.=
1S=

=8~SUNG

HIGH voltage level
LOW voltage level
don't care
LOW to HIGH transition
HIGH to LOW transition
one HIGH level output pulse
one LOW level output pulse

134

KS54AHCT
KS74AHCT

123

Dual Retriggerable Monostable
Multivibrator with Clear

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package(N}: -1 2mW/o C from 65 0 C to 85 0 C

Supply Voltage Range Vcc, ..
-0.5V to +7V
DC Input Diode Current, 11K
(VI<-0.5V or VI>Vcc+0.5V) ..
±20 rnA
DC Output Diode Current, 10k
(Vo<-0.5V or Vo>Vcc+0.5V)
±20 rnA
Continuous OUtput Current Per Pin, 10
(-O.5V-_ _~(6:...)_ _

2Y

>-_ _(:....8)'-----'

3Y

~_---'\'-11.....;.)-_ 4Y

137

1251126
.

KS54AHCT
KS74AHCT' .

Quad 3-State Buffers

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vee,
.... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI> Vee +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V·< Vo < Vee +0.5V) .. .
±70 mA
Continuous Current Through
Vee or GND pins. . . . . . . . . . . . . .
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
... 4.5V to 5.5V
DC Input & Output Voltages·, VIN, Vour : . OV to Vce
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)
KS74AHCT
KSS4AHCT
Ta= -40°C to +8S oC Ta=-SSOCto +12SoC Unit

Ta =2SoC

Test Conditions

Typ
Minimum High-Level
I~~~ Voltag~ ______
Maximum Low-Level
Input Voltage
Minimum High-Level
Output Voltage

Maximum Low-Level
Output Voltage

2.0

V

2.0

---~--------

0.8

VIL

-

0.8

-~----------.-

---~--

----

0.8

V

- - 1 - - - _ . - - - - - - - - - - - - - - -----

VOH

VOL

hN

Maximum 3-State
Leakage Current

loz

Additional Worst
Case Supply
Current

2.0

VIH

- - - - - - - - - - _ . _ - - - - --------

Maximum Input
Current

Maximum Quiescent
Supply Current

Guaranteed Limits

VIN=VIH or VIL
10=-20j.lA
10= -6mA
VIN=VIH or VIL
10=20j.lA
10=12mA
10=24mA
VIN::::::Vee or GND

Vee Vee -0.1
4.2
3.98

Vee -0.1
3.84

- - f - - - - - - - - - - - - f-----

0

0.1
0.26
0.39

0.1
0.33
0.5
--_._--------.-

±0.1

±1.Q

Vee -0.1
3.7
--~~----

V

------ ---_. _ . -

0.1
0.4

V

-------------- -

±1.0

j.lA
._- . -

Icc

~Iee

Output Enable
=VIH
Vour=Vcc or GND
VIN=Vee or GND
10ur=Oj.lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=Oj.lA

c8SAMSUNG
Electronics

±0.5

±5.0

·±10.0

8.0

j.lA
--_ ...__ . _ -

--

80.0

160.0

r--'--

j.lA
- - r------

2.7

2.9

3.0

mA

138

KS54AHCT
KS74AHCT

125.112_6

AC ELECTRICAL CHARACTERISTICS
Characteristic

Condltlons l

Symbol

Quad 3-State Buffers
(Input t r ,

tf~2 ns), AHCT125, AHCT126

KS74AHCT
KS54AHCT
T.=25°C
T.= -40°C to +85°C T.= -55°C to + 125°C
Unit
Ycc=5.0Y
Ycc=5.0Y±10%
Ycc:: 5•OY ± 10 0; '
Typ

Propagation Delay,
A toY

tpLH

CL=50pF
CL =150pF

6

tpHL

CL=50pF
CL=150pF

tPZH

Output Enable Time
Enable to Y

r--------- RL=1 kO

Output Disable Time,
Enable to Y

tPHZ
r--------- RL=1kO

Input Capacitance
Output Capacitance
Power Dissipation
Capacitance· (per stage)

tPZL

tpLZ

Max

Min

Max

9

10
15

12
18

7
10

13
17

15
19

CL=50pF
CL=150pF

11
14

18
23

22
28

CL=50pF
CL =150pF

11
14

18
23

22
28

13

18

13

18

CL=50pF

CIN

Min

--

5

ns

ns

22
- -- - - - - - 22

ns
pF

-r--

COUT

Output disabled

10

pF

Cpo

G or G=Vcc
G or G=GND

5
30

pF

I

* Cpo determines the no-load dynamic power dissipation: PO=CPD VCC ' fint For AC switching test circuits and timing waveforms see section 2_

=8SAMSUNG
Electronics

139

KS54AHCT
KS74AHCT

.13... 2

Quad

Schmi~t- Trigger

NAND Gates

FEATURES

DESCRIPTION

• Functior'l, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA@ VOL =O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These Schmitt-trigger devices contain four independent
NAND gates. They perform the Boolean function Y=AeB=
A+B in positive logic.

PIN CONFIGURATION

The input threshold levels are temperature compensated
and can be triggered from the slowest of input ranges and
still give jitter-free output signals:
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL. NMOS and CMOS devices
without any external components.
All inpu!s and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

1A

Vee

1B

4B

1Y

4A

2A

4Y

2B

3B

2Y

3A

GND

3Y

1A~)
ff
1Y

1B (2)

2A~) 2Y

(5).J:J
.
2B

3A~
(10)..IT
. 3Y

3B

4A~)
. 4Y

4B (13).J:J

FUNCTION TABLE
(Each Gate)
INPUTS

OUTPUTS

A

B

y

L
L
H
H

L
H
L
H

H
H
H
L

c8SAMSUNG
Electronics

140

132

KS54AHCT
KS74AHCT

Quad Schmitt-Trigger NAND Gates

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins . . .
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt . . . .
500 mW

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Ta =25°C

Symbol Test Conditions

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-2o"A
10=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=201AA
10=4mA
10=8mA

(Vee=5V± 10% Unless Otherwise Specified)
KS54AHCT
KS74AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

vee Vee -0.1
4.2
3.98

Vee -0.1
3.84

Vee -0.11
3.7

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

0

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

IAA

Maximum Quiescent
Supply Current

Icc

VIN=Vee or GND
10UT=01AA

2.0

20.0

40.0

IAA

per input pin
VI=2.4V
other inputs:
at Vee or GND
10uT=01AA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

bolee

DC ELECTRICAL CHARACTERISTICS
Characteristic
Positive-Going

Symbol
VT+

Threshold Voltage
Negative-Going

VT-

Threshold Voltage
Hysteresis
(VT+-VT-)

c8SAMSUNG
Electronics

VH

Test Conditions

KS74AHCT
KS54AHCT
Ta=25°C
Unit
Ta= -40°C to +85°C Ta=-55°Cto +125°C
Min Max

Min

Max

Min

Vee=4.5V

1.2 1.9

1.2

1.9

1.2

1.9

Vec=5.5V

1.4 2.1

1.4

2.1

1.4

2.1

Vce=4.5V

0.5 1.2

0.5

1.2

0.5

1.2

Vee=5.5V

0.6

1.4

0.4

1.4
1.4

0.6

Vcc=4.5V

0.6 1.4
0.4 1.4

0.4

1.4

Vcc=5.5V

0.4 1.5

0.4

1.5

0.4

1.5

Max
V
V
V

141

I

KS54AHCT
KS74AHCT

1:.3,..2

Quad Schmitt· Trigger NAND Gates

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr , tf~2 ns), AHCT132

KS54AHCT
KS74AHCT
Ta=25°C
T.a= -40°C to +85°C Ta= -55°C to +125°C
Symbol Conditions t Vcc=5.0V
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Propagation Delay,
Any input to Y

~

CL=50pF

tPHL

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per gate)

Min

Max

Min

Max

8

14

17

8

14

17

ns

5

pF

15

pF

* CPD determines the no-load dynamic power dissipation: PD=CPO VCC 2 fin·
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

142

KS54AHCT
KS74AHCT

133

13-lnputNAND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
High-Drive-Current outputs:
IOl =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C

The '133 contains a single 13-input NANO gate.
It performs the boolean functions (in positive logic):
Y = A·S·C·O·E·F·G·H·I·J·K·L·M
y = A+B+C+D+E+F+CHH+T+J+R+I+M

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

LOGIC DIAGRAM

A

Vee

B

M

e
D

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

K

E

A
B

e
D

F

E

G

H

GND

y

I

(1)
(2)
(3)
(4)
(5)
(6)

y
G

H

(7)
(10)
(11)
(12)

K

FUNCTION TABLE

(14)

M

(15)

OUTPUT
y

INPUTS A THRU M
All inputs
One or more inputs

(13)

H
L

c8SAMSUNG
Electronics

L
H

143

KS54AHCT
KS74AHCT

"1:3B

13-lnputNA'ND 'Gates

.Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C
Ceramic Package (J): -12mW/oC from 100°C to 125°C

Supply Voltage Range Vcc, , ...... -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vcc +0.5V) . , ... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V) , . , . ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) ... , . , ... ±35 mA
Continuous Current Through
Vcc or GND pins .... , , .. , .... ' ., ±125 mA'
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt, ... , . 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc ... , .... , ..... 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT ' . OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
, . , . Max 500 ns
Input Rise & Fall Times, tr , k ..

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at 'or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol lest Conditions

(Vcc=5V± 10% Unless Otherwise Specified)

Ta=25°C

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Alcc

Vcc Vcc -0.1
3.98
4.2
0

VIN=VCC or GND
10UT=0",A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
lOUT = o",A

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr • tf~2 ns). AHCT133

KS74AHCT
KS54AHCT
Ta ~25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Symbol Conditionst Vcc=5.0V
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Propagation Delay,
Any input to Y

Min

Max

tpLH

11

18

tpHL

11

18

r---- CL=50pF

Input Capacitance

CIN

5

Power Dissipation Capacitance·

Cpo

15

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG'
Electronics

Min

Max

22
22

ns
pF
pF

fin,

144

KS54AHCT
KS74AHCT

138

3-Line to 8-Line Decoders/Demultiplexers

FEATURES

DESCRIPTION

• Designed specifically for high-speed memory
decoders and data transmission systems
• Incorporates 3 enable inputs to simplify cascading
and/or data reception
• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices are designed to be used in highperformance memory-decoding or data-routing applications
requiring very short propagation delay times. In highperformance memory systems, these decoders can be
used to minimize the effects of system decoding. When
used with high·speed memories utilizing a fast-enable
circuit, the delay times of these decoders and the enable
time of the memory are usually less than the typical access
time of the memory. This means that the effective system
delay introduced by the decoder is negligible.
The conditions at the binary select inputs and the three
enable inputs select one of eight input lines. Two activelow and one active-high enable inputs reduce the need for
external gates or inverters when expanding. A 24-line
decoder can be implemented without external inverters and
a 32-line decoder requires only one inverter. An enable
input can be used as a data input for de multiplexing
applications.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

A

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

Vee

8

YO

C

Y1

G2A

Y2

G28

Y3

G1

Y4

Y7

Y5

GND

YB

LOGIC DIAGRAM

FUNCTION TABLE
Enable
Inputs

Select
I.nputs

Outputs

G1

G2*

C B A

YO Y1 Y2 Y3 Y4 Y5 Y6 Y7

X

H
X

X X X
X X X

L
L
L
L
L
L
L
L

L
L
L
L
H
H

H
H
L
H
H
H

H
H
H
L
H
H

H

H

H
H
H

H
H
H

L
H
H
H
H
H
H
H
H

L
L
H
H
L
L
H H

L
H
L
H
L
H
L
H H H

H
H
H
H
L
H
H
H
H
H

H
H
H
H
H
L
H
H
H

H

c8SA~SUNG
Electronics

H
H
H
H
H
H
L
H
H
H

H
H
H
H
H

H
H
H
H
H

H
H
H
H
H

H

H

H

H
L

H
H
L
H

H
H
H
L

H
H

145

I

S-Line to 8-Lin.e Decoders/Demultiplexers
Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode, Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±35 mA
Continuous Current Through
Vee or GND pins
±·125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee .............. 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . .. Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)
KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta= -55°C to +125°C Unit

Ta=25°C

Symbol Test Conditions

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

",A

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

VIN=VIH or VIL
lo=-:W",A
10=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10 = 20",A
10=4mA
10=8mA

Maximum Input
Current

hN

VIN=Vee or GND

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

61ee

VIN=Vee or GND
10UT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10UT=0",A

=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98

--f------

0

146

KS54AHCT

.KS74AHCT

138

3-Line to 8-Line Decoders/Demultiplexers

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr •

tf~2

ns). AHCT138

KS74AHCT
KS54AHCT
Ta=25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Unit
Symbol Conditions t Vcc=5.0V
Vcc = 5.0V:!: 10%
Vcc=5.0V:!: 10%
Typ

Min

Max

Min

Max

Propagation Delay.
A. B. C or any Y

~

12

20

24

tpHL

12

20

24

Propagation Delay.
G1 to any Y

-

12

18

20

12

18

20

Propagation Delay.
G2A or G2B to any Y

-

tpLH

12

18

20

tpHL

12

18

20

tpLH
tpHL

CL=50pF

ns
ns
ns

Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

50

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2

fin.

t For AC switching test circuits and timing waveforms see section 2.

II

c8SAMSUNG
Electronics

147

KS54AHCT
KS74AHCT

139
.

Dual 1-01-4 Decoders/Demultiplexers
DESCRIPTION

FEATURES
• Designed specifically for high-speed memory
decoders and data transmission systems
• Incorporates 2 enable inputs to simplify cascading
and/or data reception
• Function, pin-out, .speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characteri.zed for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices are deSigned to be used in highperformance memory-decoding or data-routing applications
requiring very short propagation delay times. In highperformance memory systems, these decoaers can be
used to minimize the effects of system decoding. When
used with high-speed memories utilizing a fast·enable
circLiit, the delay times of these decoqers and the enable
time of the memory are usually less than the typical access
time of the memory, this means that the effective system
. delay introduced by the decoder is negligible.
The '139 consists of two individual two· line to four-line
decoders in a single package. The active·low enable input
can be used as a data line in demultiplexing applications.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION

(Each Decoder/Demultiplexer)
1<3

Vee

1A

2G

1B

2A

1YO

29

1Y1

2YO

1Y2

2Y1

1Y3

2Y2

GND

2Y3

ENABLE

G

YO

Y1
OUTPUTS
Y2

Y3

FUNCTION TABLE
Inputs
Enable

G
H
L
L
L
L

Outputs

Select
A
B

X

X

L
L
H
H

L
H
L
H

YO

Y1

Y2

Y3

H
L
H
H
H

H
H
L
H
H

H
H
H
L
H

H
H
H
H
L

c8SAMSUNG
Electronics
'

148

KS54AHCT
KS74AHCT

139

Dual 1-of-4 Decoders/Demultiplexers

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 rnA
Continuous Current Through
Vee or GND pins . . . . . .
± 1 25 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf .
.. Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the deviee at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vce=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vce -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN = VIH or VIL
10=20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

lee

8.0

80.0

160.0

",A

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

.6.lee

VIN=Vee or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

c8SAMSUNG
Electronics

Vee Vce -0.1
3.98
4.2
0

149

II

KS54AHCT
KS74AHCT

139..

Dual 1-01-4 Decoders/Demultiplexers

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr , tf~2 ns), AHCT139

KS74AHCT
KS54AHCT
Ta=25°C
Ta= -40°C to +85°C Ta= - 55°C to +125°C
Symbol Conditionst Vcc=5.OV
Unit
Vcc= 5.OV:t 10%
Vcc=5.OV:t 10%
Typ
tPlH

11

tPHL

11

Propagation Delay,
AorBtoY

f------

~opagation

~

Delay,

GtoanyY
Input Capacitance
Power Dissipation Capacitance *

CL=50pF

Min

Max

Min

Max

17
17

20

18

21

18

21

ns

20

tpHL

11
11

C'N
Cpo

5

pF

50

pF

ns

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.

t For

A(~

switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics
.

150

KS54AHCT
KS74AHCT

148

8-Line to 3-LinePriority Encoders

FEATURES

DESCRIPTION

•
•
•
•
•

The '1 48 provides three bits of binary coded output
representing the position of the highest order active input,
along with an output indicating the presence of any active
input. It is easily expanded via input and output enables
to provide priority encoding over many bits.

•
•
•
•
•

•

Encodes eight data lines in priority
Provides 3-bit binary priority code
Input enable capability
Easily cascadable
Function, pin-out, speed and drive compatibility with
54174ALS logic family
Low power consumption characteristic of CMOS
High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

These devices p~ovide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components. .
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

II

FUNCTION TABLE

4

Inputs
Vee

5

EO

EI

0 1 2 3 4 5 6 7

6

GS

H
L

X
H
X
X
X
X
X
X
X

3
EI

A2
A1

GND

c8SAMSUNG
Electronics

0

AO

I

Outputs

1----,---

L
L
L
L
L
L
L
L

X X
H H
X X
X X
X X
X X
X X
X L
L H
L H H

X
H
X
X
X
X

X
H
X
X
X

X
H
X
X

L

L H

L H H
H H H
H H H
H H H

X X
H H
X L
L H
H H
H H
H H
H H
H H
H H

A2 A1 AO

GS EO

H
H

H
H

H
H

H
H

H

L
L
L
L

L
L

L
H

H
H

H

L
L

H

H
H

H

L
L
L
L
L
L
L
L

H
H
H
H
H
H
H
H

H
H
H
H

L
L
L

L

I

151

KS54AHCT
KS74AHCT

148

8-Line to 3-Line Priority Encoders

LOGIC DIAGRAM
(10)

II
o~~~w-r~

(15) EO

(11)

GS

(12)

2--~-4~~~+-+-~

3

(13)

4~(1~)____~~-+~-O__-+~

(2)
5----------~+-+_~.~~i~o_+_--~

(3)

(4)

-------------0 ~-------------------......-4-..,

EI_{_5_)

Absolute Maximum Ratings*
Supply Voltage Range Vee, ..
-0.5V to + 7V
DC Input Diode Current, I,K
(VI < -0.5V or VI> Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins . . . .
± 125 mA
Storage Temperature Range, T5 1g ••. -:65°C to +150°C
Power Dissipation Per Package, Pdt. . . . . . 500 mW
* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

=8SAMSUNG
1:1..."trnril... ",

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . .
. ....... 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf
Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

152

148

KS54AHCT
KS74AHCT

8-Line to 3-Line Priority Encoders

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

KS54AHCT
KS74AHCT
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit

Ta=25°C
Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0 .

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

Vee -0.1
3.84

Vee -0.1
.3.7

V

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

liN

VIN=VIH or VIL
lo=-20~A

Vee Vee -0.1
4.2
3.98

lo=-4mA
VIN=VIH or VIL

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

ll.lee

10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=Vee or GND

±0.1

±1.0

±1.0

~A

8.0

80.0

160.0

~A

2.7

2.9

3.0

mA

lo=20~A

0

VIN=Vee or GND
louT=O~A

per input pin
VI=2.4V
other Inputs:
at Vee or GND
louT=O~A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r , tf~2 ns), AHCT148
KS54AHCT
KS74AHCT
To =25°C
To = -40°C to +85°C To = -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Propagation Delay,
1-7 to AO, A1 or A2
Propagation Delay,
0~7 to EO
Propagation Delay,
0-7 to GS

Min

Max

Max

Min

tpLH

10

17

20

tpHL

10

17

20

tpLH

11

18

22

tPHL

11

18

22

24

29

24

29

14
_.. - ---------

tpLH
tpHL

CL=50pF

14

Propagation Delay,
EI to AO, A1 or A2

tpLH

10

16

19

tpHL

10

16

19

Propagation Delay,
EI to GS

tpLH

10

17

20

tPHL

10

17

tpLH

11

18

22

tpHL

11

18

22

Propagation Delay,
EI to EO

.... -

20

f------~--.-

ns
ns
ns
ns
ns

ns

Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

50

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SA~SUNG
ElectroniCS

153

II

KS54AHCT
KS74AHCT

151
.

1-0'-8 Data Selectors/Multiplexers

FEATURES

DESCRIPTION

• Can perform as:
Boolean Function Generators
Parallel-ta-Serial Converters
Data Source Selectors
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High drive currents outputs
. (IOL 24 rnA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT:- -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These monolithic data selectors/multiplexers provide full
binary decoding to select one of eight data sources. The
strobe input (<3) must be at a low logiC level to enable the
inputs. A high level at the strobe terminal forces the W
output high and the Y output low.

=

=

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vec and
ground.

FUNCTION TABLE
PIN CONFIGURATION
OUTPUTS

INPUTS
STROBE

SELECT
03

Vee

02

04

01

05

DO

06

Y

07

W

A

G
GNO

B

e

C

B

A

G

X
L
L
L
L
H
H
H
H

X
L
L
H
H
L
L
H
H

X
L
H
L
H
L
H
L
H

H
L
L
L
L

L
L
L
L

y

W

L
DO
D1
02
D3
D4
D5
D6
D7

H
DO
D1
D2
D3
D4
D5
D6
D7

H = high level, L = low level. X = irrelevant
DO. D1 ... D7 = the level of the D respective input

Absolute Maximum Ratings*
Supply Voltage Range Vee. . . .
-0.5V to + 7V
DC Input Diode Current. hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
COt:Jtinuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±70 mA
Continuous Current Through
Vee or GND pins ................ ±250 mA
Storage Temp~rature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
• Absolute Maximum Ratings are those values beyond
which permanent. damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long ex·
posure to these conditions may affect device reliability.

=8~SUNG

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN. Vour .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

154

KS54AHCT
KS74AHCT

151

1-of-8 Data Selectors/Multiplexers

LOGIC DIAGRAM
(7\

14)

DO

"'

r----

;::::::L..I

~

f=L.-./

13)

01

\.

12)

02

>---

V-

(1)
03

>---

DATA
INPUTS

115)

04

,---,

~

I--

~

(14)

05

(13)

06

I--

--_A.

~

Fl--'"'

(5)
(6)

y

w

I

II

112)

(11)

A

"

..

~t:::::L...I

110)

B--

C

19)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

KS74AHCT
KS54AHCT
Ta = -40°C to +8SoC Ta=-55°Cto +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage-

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN = VIH or VIL
lo=-20",A
lo=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20",A
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Ice

VJN=Vec or GND
lOUT = o",A
per input pin
VJ=2.4V
other Inputs:
at Vcc or GND
IOUT=O",A

=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

155

KS54AHCT
KS74AHCT

151

1-01-8 Data Selectors/Multiplexers

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr • tf~2 ns). AHCT151

KS74AHCT
T.=25°C
T. = -40°C to +85°C
Vcc=5.0V
Vcc=5.0V:t10%

KS54AHCT
T.= -55°C to +125°C
Vcc=5.0V:t 10%

Symbol

Condltlonat

tPLH

CL=50pF
CL=150pF

13
16

21
26

25
31

tpHL

CL=50pF
CL=150pF

13
16

21
26

25
31

tPLH

CL=50pF
CL=150pF

15
18

24
29

27
33

tpHL

CL=50pF
CL=150pF

15
18

24
29

27
33

tpLH

CL=50pF
CL=150pF

9
12

15
20

18
24

tpHL

CL=50pF
CL=150pF

9
12

15
20

18
24

tPLH

CL=50pF
CL=150pF

8
11

15
20

18
24

tpHL

CL=50pF
CL =150pF

8
11

15
20

18
24

tpLH

CL=50pF
CL=150pF

12
15

19
24

23
29

tPHL

CL=50pF
CL =150pF

12
15

19
24

23
29

tpLH

CL=50pF
CL=150pF

13
16

21
26

25
31

tpHL

CL=50pF
CL =150pF

13
16

21
26

25
31

Typ
Propag~tion

Delay.
A. Bor C tQ Y

Propagation Delay.
A. B or C to W

Propagation Delay.
AnyDtoY

Propagation Delay
Any D to W

Propagation Delay.
G to Y

Propagation Delay.
G to W
Input Capacitance
Power Dissipation Capacitance *

C'N
Cpo

Min

5

Max

Min

Unit

Max

ns

ns

ns

ns

ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc1fin.
t For AC switching test circuits and timing waveforms see section 2. "

c8SAMSUNG
Electronics

156

KS54AHCT
KS74AHCT

153

Dual 1-of-4 Data Selectors/Multiplexers

FEATURES·

DESCRIPTION

• Allows Multiplexing from N Lines to 1 Line
• Performs Parallel-to-Serial Conversion
• Strobe (Enable) Line Provided for Cascading
(N lines to n lines)
• '253 is the 3-State Version of this part
• Function, pin-out, speed and drive compatibility with
54174ALS logic family
.
• Low power consumption characteristic of CMOS
• High drive currents Outputs
(IOL 24 rnA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

Each of these data selectors/multiplexers contains inverters
and drives to supply full binary decoding data selection to
the AND-OR gates. Separate strobe inputs (G) are provided for each of the. two four-line sections.

PIN CONFIGURATION

FUNCTION TABLE

=

=

1<3

Vee

B

2<3

lC3

A

lC2

2C3

lCl

2C2

lCO

2Cl

1Y

2CO

GND

2Y

These devices provide speeds and drive c~pability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

SELECT
INPUTS

DATA INPUTS
CO C1

B

A

X

X

X

L
L
L
L
H
H
H
H

L
L
H
H
L
L
H
H

L
H

X
X
X
X
X
X

X
X
X
L
H

X
X
X
X

C2 C3

X
X
X
X
X
L
H

X
X
X
X
X
X
X

X
X

L
H

I
STROBE

OUTPUT

G

y

H
L
L
L
L
L
L
L
L

L
L
H
L
H
L
H
L
H

Select inputs A and B are common to both sections.

c8SAMSUNG
Electronics

157

153
.

KS54AHCT
KS74AHCT·

Dual 1-0'-4 Data Selectors/Multiplexers
\

LOGIC DIAGRAM

~'"I
lCO

(8)

lCl _(_5)_ _

lC2

l

lC3

2CO

IV
(4)

(3)

(10)

DATA 2

2C2 (12)

2C3

(13)

20

(15)

2Y

Absolute Maximum Ratings*
Supply Voltage Range Vee, ... . . . . -O.5V to + 7V
DC Input Diode Current, 11K
(V) < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) ......... ±70 inA
Continuous Current Through
Vcc or GND pins ................ ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . . .. 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vcc .
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

158

153

KS54AHCT
KS74AHCT

Dual 1-01-4 Data Selectors/Multiplexers

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 1 0% Unless Otherwise Specified)
KS74AHCT
KS54AHCT
T.= -40°C to +85°C T.= -55°C to +125°C Unit

T. =25°C

Test Conditions

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20,.,A
lo=-6mA

Vec -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20,.,A
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

,.,A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

,.,A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

81cc

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
louT=O,.,A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
IOUT=O,.,A

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r , tf~2 ns), AHCT153
KS54AHCT
KS74AHCT
T.=25°C
T.= -40°C to +85°C T.=-55°Cto +125°C
Unit
Vee=5.0V
Vcc=5.0V::t 10%
Vee = 5.0V::t 10%

Symbol

Condltlons t

tpLH

CL=50pF
CL=150pF

13
16

21
26

25
31

tpHL

CL=50pF
CL =150pF

13
16

21
26

25
31

tPLH

CL=50pF
CL =150pF

9
12

15
20

18
24

tpHL

CL=50pF
CL =150pF

9
12

15
20

18
24

tpLH

CL=50pF
CL=150pF

11
14

18
23

22
28

tpHL

CL=50pF
CL =150pF

11
14

18
23

22
28

Typ

Propagation Delay,
AorBtoY

Propagation Delay,
Data (Any C) to Y

Propagation Delay,
G to Y
Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

Min

5

Max

Min

Max

ns

ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC z fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

159

II

KS54AHCT
KS74AHCT

154

4-Line to 16-Line. Dflcoders/Demultiplexers

FEATURES.

DESCRIPTION

• Decodes 4 Binary-Coded Inputs into One of 16 Mutually Exclusive OUtputs
• Performs the Demultlplexing Function by Distributing
Data From One Input to Any One of 16 Outputs
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• ·Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

T~ese

PIN CONFIGURATION

LOGIC DIAGRAM

monolithic, 4-line to 16-line decoders decode four
binary-coded inputs into one of sixteen mutually exclusive
outputs when both the strobe inputs. G1 and G2, are low.
The demultiplexing function is performed by using the 4
input lines to address the output line, passing data from
one ofthe strobe inputs with the other strobe input low.
When either strobe input is high, all outputs are high. These
demultiplexers areidenally suited for implementing hiQhperformance memory decoders.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diod~ clamps to Vee and
ground.

A

.vcc

A

(18)

6

<31

... ---

0

A
B

<32

.- .........

ii C _

Gl
G2 (19)

~-B,--I--

11

(3)

(4)

t---I--

14
13

(2)

G

15

12

(1)

~--

(5)

~--

(6)

c-)--

~
(22

.----

>----

.---

8

(21

>-r------

c

(8)

>-y

C
'0(20

(7)

0----

B

... -

0

;:::::

f-~)

l--_

0

5

~

----

...
...
.... ...
t::::::
...
f-)--

(11

~~

~- f--f--

C

~

ii

(14

(15

;:::: ~

A

~)- f - -

A

~:::

~

--~

B"cI:::I=::: ....-

c8SAMSUNG
Electronics

(13

~~

(17

160

KS54AHCT
KS74AHCT

15'6fA

4-Line to 16-Line Decoders/Demultiplexers

FUNCTION TABLE
Inputs

Outputs

G1

G2

0

C

B

A

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H

L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
H

L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X
X
X

L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
X
X
X

L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
X
X
X

L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
X
X
X

L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
H
H
H
H
L
H
H

H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H

H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H

H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H

H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H

H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H

H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H

H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H

H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H

H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H

H
H
H
H
H
H
H
H
H
H

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Va < -0.5V or Va> Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Va < Vee +0.5V) . . .
±35 rnA
Continuous Current Through
Vee or GND pins . .
± 125 rnA
Storage Temperature Range, T8 1g •.. -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics
.

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

161

I

15'A
..,

KS54AHCT
KS74AHCT

4-Line to 16-Line DecoderSIDem;,Jltiplexers

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V±10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Ta

KS74AHCT
+85°C Til

= -40°C to

KS54AHCT
+125°C Unit

=-55°C to

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

~aximum Low-Level
Input Voltage

VIL

O.B

O.B

O.B

V

Minimum High-Level
Output Voltage

VOH

Vcc -0.1

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2OIolA
lo=4mA
lo=BmA

Maximum Input
Current

liN

VIN=VCC or GND

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

.6.lcc

VIN=VIH or VIL
lo=- 2OIolA
lo=-BmA

Vcc Vcc -0.1
4.2
3.9B
0

VIN=VCC or GND
louT=OIolA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
louT=OIolA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

lolA

B.O

BO.O

160.0

lolA

2.7

2.9

3.0

mA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

3.B4

(Input tr , tt~2 ns), AHCT154
T a =25°C
Vcc=5.0V
Typ

KS74AHCT
Ta= -40°C to +85°C
Vcc=5.0V±10%
Min

Max

KS54AHCT
Ta= -55°C to +125°C
Unit
Vcc=5.0V± 10%
Min

Max

Propagation Delay,
A, B, C, D to. Any Output

tpLH

12

20

24

tpHL

12

20

24

Propagation Delay,
<31 or <32 to .Any Output

tpLH

12

20

24

tpHL

12

20

24

CL=50pF

ns
ns

Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

50

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

162

KS54AHCT
KS74AHCT

155

Dual 2-to-4 Line Decoders/Demultiplexers

FEATURES

DESCRIPTION

• Typical applications:
Dual 2-t0-4 line decoder
Dual 1-t0-4 line demultiplexer
3-t0-8.line decoder
1010-8 line demultiplexer
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '155 consists of two 1-to-4 line demultiplexers with
independent strobes and common binary address inputs.
When both sections are enabled by the strobes, the common address inputs sequentially select and route
associated input data to the appropriate output of each secton. The individual strobes permit activating or inhibiting
each of the 4-bit sections as desired. Data applied to input C1 is inverted at its outputs and data applied to C2
is true through its outputs. The inverter following the C1
data input permits use as a 3-to-8 line decoder, or 1-to-8
line demultiplexer, without gating.

PIN CONFIGURATION

c8SAMSUNG
Electronics

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

I

LOGIC DIAGRAM

163

KS54AHCT
KS74AHCT

'155'

Dual 2-to-4 Line Decoders/Demultiplexers

FUNCTION TABLES
2-t0-4 Line Decoder or 1-t0-4 Line Demultiplexer
Inputs
Select

Strobe

Data

Select

Outputs

a

A

G1

C1

1YO

1Y1

1Y2

1Y3

X
L
L
H
H
X

X
L
H
L
H
X

H
L
L
L
L
X

X
H
H
H
H
L

H
L
H
H
H
H

H
H
L
H
H
H

H
H
H
L
H
H

H
H
H
H
L
H

Inputs
Select

Strobe

Data

Outputs

Strobe
or Data

BA

G*

X XX

H
L
L
L
L
L
L
L
L

ct
L
L
L
L
H
H
H
H

L L
L H
H L
HH
L L
L H
H L
HH

(0)

(1 )

(2)

(3)

(4)

(5)

(6)

(7)

2YO 2Y1 2Y2 2Y3 1YO 1Y1 1Y2 1Y3
H
L
H
H
H
H
H
H
H

H
H
L
H
H
H
H
H
H

H
H
H
L
H
H
H
H
H

H
H
H
H
L
H
H
H
H

H
H
H
H
H
L
H
H
H

H
H
H
H
H
H
L
H
H

H
H
H
H
H
H
H
L
H

H
H
H
H
H
H
H
H
L

t = Inputs C1 and C2 Connected together
t = Inputs G1 and G2 Connected together

a

A

G2

C2

2YO

2Y1

2Y2

2Y3

X
L
L
H
H
X

X
L
H
L
H
X

H
L
L
L
L

X
L
L
L
L
H

H
L
H
H
H
H

H
H
L
H
H
H

H
H
H
L
H
H

H
H
H
H
L
H

X

Ho-8 Line Decoder or 1010-8 Line Demultiplexer

Absolute Maximum Ratings*
Supply Voltage Range Vee. . . . . . . . -0.5V to + 7V
DC Input Diode Current, hK
(V, < -0.5V or V, > Vee +0.5V) . .
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vec .............. 4.5V to 5.5V
DC Input & Output Voltages·, V'N, VOUT .. OV to Vce
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

164

KS54AHCT
KS74AHCT

155

DuaI2-to-4 Line Decoders/Demultiplexers

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V±10% Unless Otherwise Specified)

KS74AHCT
KS54AHCT
Ta= -40"C to +85°C Ta= -55°C
to +125°C Unit
- - ...

Ta =25°C

Symbol Test Conditions

-----.~.

Typ

-~--

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vcc -0.1
3.84

Vcc -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

/-lA

8.0

80.0

160.0

/-lA

2.7

2.9

3.0

mA

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
10=8mA

Maximum Input
Current

liN

VIN=VCC or GND

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

.6.lcc

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
10uT=0/-lA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10uT=0",A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr , tf~2 ns), AHCT155
T. =25°C
Vcc=5.0V
Typ

Maximum Propagation Delay,
A, S, C2, G1 or G2 to any
Output (2 levels of logic)

KS74AHCT
Ta =-40°Cto +85°C
Vee = 5.0V %10%
Min

Max

KS54AHCT
T.= -55°C to +125°C
Unit
Vcc=5.0V% 10%
Min

Max

tpLH

12

20

24

tpHL

12

20

24

14

23

28

Maximum Propagation Delay,
A or B to any Y
(3 levels of logic)

tpLH
tpHL

14

23

28

Maximum Propagation Delay,
C1 to any Y

tpLH

13

22

26

tpHL

13

22

26

Maximum Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

CL=50pF

ns

ns

ns
pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

165

II

KS54AHCT
KS74AHCT

,1571158

Quad 2-Line t01 ~Line Data
Selectors/Multiplexers

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for ,operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These are data selectors multiplexers which select a 4-bit
word from one of two sources via the control of a common select input (AlB). A separate strobe input (G) is provided. The '157 presents true data whereas the '158
presents inverted data at the outputs.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

PIN CONFIGURATION

AlB

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any ,external components.

Vee

Output Y

Inputs

f-.

1A

G

Strobe

Select

1B

4A

1Y

4B

G

AlB

A

B

H
L
L
L
L

X
L
L
H
H

X
L
H
X
X

X
X
X

2A

4Y

2B

3A

2Y

3B

GND

3Y

Data

L
H

'157

'1·58

L
L
H
L
H

H
H

L
H
L

LOGIC DIAGRAMS
'157

'158
(2)

1A~(2~)____________~~
1B (3)

1A
1Y

(3)
1B

2A (5)

2A (5)

2B (6)

2B (6)

3A (11)

3A (11)

3B (10)
4A (14)
4B (13)
STROBE G .:,,(1n"5;....)-_-a-~
SELECT AlB ..!..(1;,.:.)_ - + - ( l - J

c8SAMSUNG
Electronics

(10)

3B
(14)
4A
4B (13)
_ (15)
STROBE G
(1)
SELECT AlB

166

KS54AHCT 15~/158
KS74AHCT
I

Quad 2-Line to 1-Line Data
Selectors/Multiplexers

Absolute Maximum Ratings*
Supply Voltage Range Vee, . .
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Va > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
± 125 mA
Storage Temperature Range, T51g ••. -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C ~ +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conC:itions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20~A

10=-4mA

Vee Vee -0.1
4.2
3.98

Vee -0.1 .
3.84

Vee -0.1
3.7

V
-~

f-~-

VIN=VIH or VIL
Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

hN

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

.6. Icc

10=20~A

lo=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=Vee or GND

±0.1

±1.0

±1.0

~A

8.0

80.0

160.0

Ji.A

2.7

2.9

3.0

mA

VIN=Vee or GND
10UT=0Ji.A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0Ji.A

c8SAMSUNG
Electronics

0

167

II

KS54AHCT
KS74AHCT

157,/158
I

AC ELECTRICAL CHARACTERISTICS
Characteristic

Quad '2-Line to 1-Line Data
Selectors/Multiplexers

J

Symbol

Condltlons t

(Input tr , tf~2 ns), AHCT157, AHCT158
Ta=25°C
Vee=5.0V

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta = - 55°C to +125°C
Unit
Vee = 5.0V: 10%
Vee=S.OV: 10%

Typ

Propagation Delay,
Aor B to Y

Min

Max

Min

Max

tpLH

11

15

18

tpHL

11

15,5

18

13

22

26

13

22

26

Propagation Delay,
AlB to Y

tpLH

Propagation Delay,
Y

tpLH

12

19

23

tPHL

12

19

23

Input Capacitance

CIN

5

Power Dissipation Capacitance"

Cpo

G to

tpHL

CL=50pF

.. Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

ns
ns
ns
pF
pF

fin,

168

KS54AHCT
KS74AHCT

1601161
1621163

Synchronous 4-Bit Decade
and Binary Counters

FEATURES

DESCRIPTION

•
•
•
•
•

These are synchronous, presettable 4·bit binary counters
featuring internal carry-look-ahead for high-speed counting.
The '1 60 and '1 62 are decade counters, and the '161
and '163 are 4-bit binary counters. The buffered clock input triggers all flip-flops simultaneously on the riSing edge
of the input waveform. This eliminates the output counting
spikes normally associated with asynchronous counters.

•
•
•
•
•

•

Internal look Ahead for Fast Counting
Carry Output for n-bit cascading
Synchronous Counting
Synchronously Programmable
Function, pin-out, speed and drive compatibility with
54174AlS logic family
low power consumption characteristic of CMOS
High-Drive-Current outputs:
10l =8 rnA @ VOL =0.5V
Inputs and outputs interface directly with TTL, NMOS·
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: - 55°C to + 125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION
ClR

Vee

ClK

RCO

A

QA

B

Os

C

Oe

D

QD

ENP

ENT

GND

lOAD

FUNCTION TABLES
'160, '161
Function

ClK ClR ENP ENT lOAD

X
X
X
X

t
t

L
H
H
H
H
H

X

X

X

H
L
L

L
H
L

H
H
H
L
H

X

X

H

H

Clear
Count & RC disabled
Count disabled
Count & RC disabled
Load
Increment Counter

'162, '163
ClK ClR ENP ENT lOAD

t
X
X
X
t
t

L
H
H
H
H
H

X

X

X

H
L
L

L
H
L

X

X

H
H
H
L

H

H

H

Function
Clear
Count & RC disabled
Count disabled
Count & RC disabled
Load
Increment counter

=8SAMSUNG
Electronics

These counters are fully programmable; that is, the outputs may be preset to either level. As presetting is synchronous, setting up a low level at the load input disables
the counter and causes the outputs to agree with the setup
data after the next clock pulse regardless of the levels of
the enable inputs.
The clear function for the' 160 and' 1 61 is asynchronous
and a low level at the clear input sets all four of the flipflop outputs low regardless of the levels of the clock, load
or enable inputs.
The clear function for the '162 and 163 is synchronous
and a low level at the clear input sets all four of the· flipflop outputs low after the next clock pulse, regardless of
the levels of the enable inputs. This synchronous clear
allows the count length to be modified easily as decoding
the maximum count desired can be accomplished with one
external NAND gate. The gate output is connected to the
clear input to synchronously clear the counter. r
Two enable inputs and a ripple carry output allow easy
cascading of the counters. Both count-enable inputs (ENP
and ENT) must be high to count, and ENT is fed forward
to enable the ripple carry output. The ripple carry output
(RCO) thus enabled will produce a high-level pulse while
the count is maximum (9 or 15 with QA high). This highlevel overflow ripple carry pulse can be used to enable successive cascaded stages. Transitions at the ENP or ENT
are allowed regardless of the level of the clock input.
These counters feature a fully independent clock circuit.
Changes at control inputs (ENP, ENT, or LOAD) that will
modify the operating model have no effect on the contents
of the counter until clocking occurs. The function of the
counter (whether enabled, disabled, loading, or counting)
will be dictated solely by the conditions meeting the stable
setup and hold times.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

169

II

KS54AHCT
KS74AHCT

1601161
1621163

Synchronous 4-Blt Decade
and Binary Counters

LOGIC DIAGRAMS
'160 or '162
OB

CK

CK

ern

ern

RCO
(3)

(4)

C

'161 or'163

CK

CK

CK

ern

CK

CLR

ern

ern

ENT

ern

v - - -.. .,.,----,

__

Reo
13}

14}

C

CLK

c8SAMSUNG
Electronics
.

170

1601161
1621163

KS54AHCT
KS74AHCT

Synchronous 4-Bit Decadeand Binary Counters

Typical Clear, Preset, Count. and Inhibit Sequences

'160 and '162

'161 and '163
l:iJI

COl
160

161

COl

COl

162

LOAD

---- ---------- ---....

.DATA

rnm

r---___________
-________ __
1---+--.--r---+-~L= ======= ===

--+--.... - - - - - - - - - - - - - ---+--.... - - - - - - - - - - - - - :, _ _

-+_...&------ ___ - ___ _

{:

INPUTS

163

=

=

=

ClK
160

CLK
162

--I-r.~------!::==~

0.==
0.--

OUTPUTS

==

Oc _ _

RCO

---;---t--+~

CLEAR

ENT _ _

OUTPUTS

100==

(:==
Oc:==
-

-

00==

2
3
- -......- - I N H I B I T - -

PRESET

Sequence:
(1) Clear output,s to zero
(2) Preset to BCD seven
(3) Count to eight, nine, zero, one, two, and three
(4) Ihhibit

-+--+'ri-----,...__--.J
-+--+,

ENP _ _

ENP
ENT - - - I - - t '

4--4-~-_-+f_-'---,,--4.-----~

.

RCO---+--+-~~~

1

2

~_.....--INHIBIT-_

CLEAR PRESET

Sequence:
(1) Clear outputs to zero
(2) Preset to binary twelve
(3) Count to thirteen, fourteen, fifteen, zero, one and two
(4) Inhibit

Absolute Maximum Ratings*
Supply Voltage Range Vcc, ... ,.
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vce +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vec +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
±125 mA
Vce or GND pins, ,
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ... , . , 500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional. operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fa" Times, tr , tf ......... Max 500 ns
Unused inputs must a1ways.be tied to an appropriate logiC
voltage level (either Vee or GND)

171

II

KS54AHCT
KS74AHCT

1601161
1621163

Synchronous 4-Bit Decade
and Binary Counters

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 10% Unless Otherwise Specified)
KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Ta=25°C

Test Conditions

Typ

Guaranteed Limits

Minimum High-level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum low-level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20",A
lo=-4mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum low-level
Output Voltage

VOL

VIN=VIH or VIL
lo=20",A
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

b.lcc

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
louT=O",A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
louT=O",A

AC ELECTRICAL CHARACTERISTICS
. Characteristic

Symbol

(Input t r , tf~2 ns), AHCT160, AHCT161

KS74AHCT
T. =25°C
T. = -40°C to +S5°C
Conditions t Vcc=5.0V
Vcc=5.0V±10%

Min

Unit

Max

Typ

Min

Maximum Clock Frequency

f max

50

40

Propagation Delay,
ClK to RCO

tpLH

20

24

I--

15

tPHL

15

20

24

Propagation Delay,
ClK to any Q

I--

tpLH

10

16

19

tpHL

10

16

19

Propagation Delay,
ENT to RCO

tpLH

9

r----

13

16

tpHL

9

13

16

Propagation Delay,
ClR to any Q

tpHL

15

24

29

ns

Propagation Delay,
ClR to RCO

tpHL

17

33

ns

Pulse Width

Setup Time
before ClKt

CL=50pF

Max

KS54AHCT
T.= -55°C to +125°C
Vcc=5.0V± 10%

35

23

8

12

16

ClR low

10

15

20

A, B,C, D

10

15

20

lOAD

10

15

20

10

15

20

6

10

10

0

0

0

ClK High or low

tw

tsu

ENP, ENT
ClR inactive

Hold time,
All Synchronous Inputs after ClKt

th

MHz
ns
ns
ns

ns

ns

ns

Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

80

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

172

KS54AHCT
KS74AHCT

1601161
162/163

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Synchronous 4-Bit Decade
and Binary Counters
(Input tr , tf~2 ns), AHCT162, AHCT163

Ta =25°C
Conditions t Vcc=5.0V

KS74AHCT
Ta= -40°C to +85°C
Vcc=5.0V±10%
Max

KS54AHCT
Ta = -55°C to +125°C
Vcc=5.0V± 10%

Typ

Min

f max

50

40

Propagation Delay,
ClK to RCO

tPLH
r---tpHL

15

20

15

20

Propagation Delay,
ClK to any Q

CL =50pF
tpLH
r---tpHL

10

16

20

10

16

20

Propagation Delay,
ENT to RCO

~

9

15

18

tpHL

9

15

18

tw

8

12.5

20

A, B,C, D

10

15

20

lOAD

10

15

20

15

15

20

ClR inactive

6

10

10

ClR low

6

15

20

th

0

0

0

Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

CPD

80

pF

Maximum Clock Frequency

Pulse Width,
ClK High or low

Setup Time
before ClKt

tsu

ENP, ENT

Hold time,
All Synchronous Inputs after CLKt

Min

Unit

Max

35

MHz
24

.

ns

24
ns
ns
ns

ns

ns

* CPD determines the no-load dynamic power dissipation: PD=CPD VCC2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

173

I

161A

KS54AHCT
KS74AHOT •

. ..,.

8-Bit Seria/-/nIParal/e/-Out Shift Registers

FEATURES

DESCRIPTION

•
•
•
•

These are high·speed 8·bit registers with AND-gated serial
inputs and an asynchronous clear. Data is entered serially
through either one of the two inputs, A and B. A high on
one input enables the other one, which will then determine
the state of the first flip-flop. A low at either or both inputs
inhibits data entry and resets the first flip-flop to a low level
at the next positive clock transition.

•
•
•
•
•

•

AND-Gated (enable/disable) serial inputs
Fully buffered clock and serial inputs
Direct clear
Function, pin-out, speed and drive compatibility with
54/74ALS logic family
Low power consumption characteristic of CMOS
High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
Ihputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to + 125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

Data at the serial inputs may be changed while the clock
is high or low, provided the minimum setup time requirements are met. Clocking occurs on the low-to-high-.
level transition of their clock input.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

A

Vee

B

aH
aG
a.
aE

aA
aB
ae
aD
GND

ClR
ClK

FUNCTION TABLE

Outputs

Inputs

Qe ••• QH

CLR

CLK

A

B

QA

L

X

L

L

L

QAO

QBO

QHO

H

QAn

QGn

L

X
X
H
X

L

H
H
H
H

X
X
H

QAn

QGn

X

L

L
L

QAn

QGn

t
t
t

H = high level (steady state), L = low level (steady state)
X = irrefevant (any input, including transitions)
t = transition from low to high level.
QAO. QBO. QHo=the level of QA •. QB or QH. respectively. before the indicate steadystate input conditions were established.
QAn. QGn = the level of QA or QG before the most-recent t transition of the clock;
indicates a one-bit shift.

c8SAMSUNG
Electronics

174

KS54AHCT
KS74AHCT

164

8-Bit Seriai-inIParallei-Out Shift Registers.~

LOGIC DIAGRAMS
-a

C~_(9~)__

~

____~____~______~____~______~____~______+-____~

-+__~__~~__~__~__~~__-+__~__~-+__~~

C~_(8_)__~ ~~__

(3)

(4)

(5)

I

(11)

(12)

(13)

Oe

OD

Oc

Os

(10)

(6)

PARALLEL OUTPUTS

I
Typical Clear, Shift, and Clear Sequences

C~~~--------------------------------I
SERIAL
INPUTS

Ir
"

B

L-fl

I

A

I
I
_-+-___---'

~

I

----------~I----------I
I

I

CLK--.t---

I

I

=:. _______

I

I

OA

"~,

LJrl______~I------__

...J

--,
Oe _ _ .&.'--______--J
--.,

Oc _ _

I

.J

..&.I_ _ _ _ _ _ _ _ _ _

~----~I--------~
LJrl~_+:--------

--,
--,, _ _ _ _ _ _ _ _ _ _ _ _ _....J
Oe _ _ ...

OD _ _ -LI_ _ _ _ _ _ _ _ _ _ _--...J
OUTPUTS

LJI~i---­

--.,

QF _ _ I

~----------------------~

_ _ .,

~--..&.,

U11----I I
I

__________________J~~-----------

_ _ .,

n _______
I

OH _ _ ...
' _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.I

CLEAR

c8SAMSUNG
Electronics

I

CLEAR

175

KS54AHCT
KS74AHCT

164

8-Bit Serial-lnIParaliel-Out Shift· Registers

Absolute Maximum Ratings·
Supply Voltage Range Vee, . . . . . . . -0.5V to + 7V
DC Input Diode Current, I,K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . . . .
±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N); -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vec . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vee
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V+
- 10% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

Ta

:1

KS74AHCT
+85°C Ta

= -40°C to

KS54AHCT
+125°C Unit

= -55°C to

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10- 4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage.

VOL

VIN=VIH or VIL
10=20",A
lo=4mA
10-8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

I,N

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

ll.lee

VIN=Vee or GND.
10UT-0",A
per input pin
VI=2.4V
other Inputs;
at Vee or GND
louT-O",A

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

176

KS54AHCT
KS74AHCT

164

8-Bit Serial-lnIParallel-Out Shift Registers

AC ELECTRICAL CHARACTERISTICS

(Input t r •

tf~2

Ta =2S0C
Characteristic

Symbol

Maximum Clock Frequency

f max

Propagation Delay.
ClR to any Q

tpHL

Propagation Delay.
ClK to any Q

I---

PulsE! Width

Conditions t

Vcc=S.OV

ns). AHCT164

KSS4AHCT '
KS74AHCT
Ta = -40°C to +BSoC Ta= -SsoC to +12SoC
Unit
Vee = S.OV ± 10%
Vee=S.OV± 10%

Typ

Min

60

36

Max

Min

Max

30

MHz

12

20

tpLH

11

18

21

tpHL

11

18

21

24

ns

CL=50pF

ClR low

tw

ClK High or low
Data
Setup
Time before ClKt ClR Inactive

tsu

Hold Time
Data after ClKt

th

8

12

15

8

12

15

8

12

15

8

12

15

a

4

5

ns
ns
ns
ns
--f--

Input Capacitance

CIN

Power Dissipation· Capacitance *

Cpo

(per package)

5

pF

120

pF

* Cpo determines the no·load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

177

KS54AHCT
KS74AHCT

165

8-Bit Paral/e/-/nISeria/-Out Shift Registers

FEATURES
•
•
•
•
•
•
•
•

•

•

. DESCRIPTION

Complementary outputs
Direct overriding load (data) inputs
Gated clock inputs
ParalleHo-Serial data conversion
Function, pin-out, speed and drive compatibility with
54/74AlS logic family
low power consumption characteristic of CMOS
High-Drive-Current outputs:
10l =8 rnA @ VOL =O.5V
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

SH/05
ClK

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

Inputs

Vee

ClK INH

0

F

C

G

B

H

A

QH

Clocking is accomplished through a 2-input NOR gate which
permits one of the clocks to be used as a clock inhibit function. Holding either clock input high inhibits clocking. Either
clock input is enabled by holding the other clock input low
.
while the SH/LD input is high.

FUNCTION TABLE

E

GND

These are high-speed 8-bit parallel-load or serial-in shift
registers with complementary serial outputs available from
the last stage. Parallel-in access is asynchronous and is
enabled by pulling the SH/LD input low. When SH/LD is
high, data is entered serially at the SER input and shifted
one place to the right with each positive clock transition.

SEA
QH

ClK
INH

Function

X
H
X
L

X
X
H

t

L

PARALLEL LOAD
NO CHANGE
NO CHANGE
SHIFT *
SHIFT*

SH/LD

ClK

l
H
H
H
H

t

·Content of each internal register shifts toward output QH. Data
at serial input is shifted into first register.

c8SAMSUNG
Electronics

178

KS54AHCT
KS74AHCT

165

8-Bit Parallel-lnISerial-Out Shift Registers

LOGIC DIAGRAMS
PARALLEL INPUTS

II

Typical Shift, Load and Inhibit Sequences

CLK
CLK INH

SER.,L__________
SH/[5

~-------------------------------

---r..J
I

A~~--~-----------------B

1

I

__--__

L

c~~--~--------------------------_
PARALLEL
DATA
INPUTS

1

IL

D L __~I--------~-------------------------------

I

E~~
__~--------------------------_
I
1 IIL
F •

G~~_ _~_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _

H~
I

~---~-------------------------

I·

r

I

...·t-------

INHIBIT -tI·~I

SERIAL-SHIFT

LOAD

c8SAMSUNG
ElectroniCs

179

KS54AHCT
KS74AHCT

165

8-Bit. Paralle!-!nISeria!-Out Shift Registers

Absolute Maximum Ratings·
Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) ......... ±35 mA
Continuous Current Through
Vcc or GND pins
. . . . . . . . .. ± 1 25 mA
Storage Temperature Range, T5 1g •.. -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating: .
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vec .............. 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
.
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
. Characteristic

Symbol Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)

Ta =25°C
Typ

Ta

KS74AHCT
+85°C Ta

=-40°C to

KS54AHCT
+125°C Unit

=-55°C to

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20JAA
lo=-4mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20JAA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

JAA

Maximum Quiescent
Supply Current

Icc

8·.0

80.0

160.0

JAA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Icc

VIN=VCC or GND
louT=OJAA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND,
louT=OJAA

c8SAMSUNG
ElectrElnics

Vcc Vcc -0.1
4.2
3.98
0

180

KS54AHCT
KS74AHCT

165

8-Bit Paral/e/-/nISeria/-Out Shift Registers

AC ELECTRICAL CHARACTERISTICS
Characteristic

Maximum Clock Frequency
Propagation Delay.
SH/[i) to QH or QH

Symbol Conditions t

Typ

Min

50

30

~

15

25

30

15

25

30

19

31

37

19

31

37

tpHL
tpLH

~

Propagation Delay,
H to QH or QH

r----

Setup Time

Hold Time

SH/lD low

KS54AHCT
KS74AHCT
Ta =25°C
T. = -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V± 10%
Vcc=5.0V±10%

f max

Propagation Delay.
ClK to QH or QH

Pulse Width

(Input t r • tf~2 ns), AHCT165

tpHL

CL=50pF

Max

Min

tPLH

12

20

24

12

20

24

8

12

15

8

12

15

SH/lD High
before ClKt

7

15

20

SER before ClKt

8

12

15

7

15

20

ClK INH High
before ClK-l-

7

15

20

Data before SH/lDt

5

8

10

0

0

0

0

0

0

SER Data after ClKt

MHz

tpHL

ClK High or low

ClK INH low
before ClKt

Max

25

tw

tsu

th

PAR Data after SH/lDt

ns
ns
ns
ns

ns

ns

Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

100

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

181

II

\ KS54AHCT
KS74AHCT

166

8-Bit Paral/el-lnISerial-Out
Shift Registers with Clear

FEATURES

DESCRIPTION

•
•
•
•

These devices feature parallel-in or serial-in, serial-out
registers, gated clock inputs and an overriding clear input.
The paralled-in or serial-in modes are established by the
shift/load input. When high, the input enables the serial data
input and couples the eight fill-flops for serial shifting with
each clock pulse. When low, the paralled data inputs are
enabled and synchronous loading occurs on the next clock
pulse. During parallel loading, serial data flow is inhibited.
Clocking is accomplished on the low-to-high edge of the
clock pulse through a two-input positive NOR gate permitting one input to be used as a clock-enable or clock-inhibit
function. Holding either of the clock inputs high inhibits
clocking; holding either low enables the other clock input.
This allows the system clock to be free-running and the
register can be stopped on command with the clock input. The clock-inhibit input should be changed to the high
level only when the clock input is high. A buffered direct
clear input overrides all other inputs, including the clock,
and sets all flip-flops to zero.

•
•
•
•
•

•

Synchronous load
Direct .overriding clear
Parallel to serial conversion
Function, pin-out, speed and drive compatibility with
54/74ALS logic family
Low power consumption characteristic of CMOS
High-Drive-Current outputs:
IOl =8 mA @ VOL =O.5V
Inputs and outputs interface directly with TTl, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Package options include "small outline" packages
(Available Tape & ~eel), standard DIPs.

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

PIN CONFIGURATION

SER
A
a
C
0

FUNCTION TABLE

H

CLR SH/LD

ClK
INH

ClK

SER

X

X

L
L
L
L
H

L

X
X
X

QH

G

ClK INH
ClK

E

GND

ClR

c8SAMSUNG
·Electronics

Inputs

Vee
SH/[5

L
H
H
H
H
H

X
X
L
H
H

X

t
t
t
t

H
L
X

Internal
Output
Parallel Outputs . QH
A ... H QA QB

X
X
a ... h
X
X

X

L

L

OAoOao

a
H

L
OHO

b

h

OAn

OGn

LOAn

OGn

GAOOaO

OHO

182

166

KS54AHCT
KS74AHCT

8-Bit Parallel-lnISerial-Out
Shift Registers with Clear

LOGIC DIAGRAM

PARALLEL INPUTS

•

Typical Clear, Shift, Load, Inhibit, and Shift Sequences
CLK
CLK INH
CLR

SER
SH/LD

,....--

-u

-

~h
L~

fHh

A

L

B

fH'rI

C

L
PARALLEL
INPUTS

D

fHl

E

L

F

rHh

G

H

IHIl

--,

OUTPUT OH __ J

H

I I

...._ - - SERIAL SHIFT

CLEAR

c8SAMSUNG
Electronics

_I

-----1I--.j.

I~NHIBI:

H

L

I r--I-

H

L

H

SERIAL SHIFT

L

H

----<1-

LOAD

183

8-Bit Paral/el-lnISerial-Out
Shift Registers with Clear

KS54AHCT'166
KS74AHCT
Absolute Maximum Ratings·
Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-O.5V < Vo < Vcc +0.5V) . . . . . . . . . ±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 1 25 mA
Storage Temperature Range, T519 ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°~

Recommended Operating Conditions
Supply Voltage, Vec .......... '. . . . 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vce
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . .. . Max 50~ ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 10% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ

KS54AHCT
KS74AHCT
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low~Level
Input Voltage

VIL

0.8

0.8

0.8

1/

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=- 2OI-'A
10=-4mA

Vce -0.1
3.84

Vce -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=201-'A
lo=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vec or GND

±0.1

±1.0

±1.0

I-'A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

I-'A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Icc

VIN=Vec or GND
louT=OI-'A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10UT=01-'A

c8SAMSUNG
Electronics

Vce Vcc -0.1
4.2
3.98
0

184

KS54AHCT
KS74AHCT

166

8-Bit Parallel-lnISerial-Out
Shift Registers with Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Maximum Clock Frequency

fmax

Propagation Delay.
ClR to QH

tPHL

Propagation Delay.
ClK to QH
ClR low
Pulse Width
ClK High or low
Setup Time

Ta =25°C
Vcc=5.0V

KS74AHCT
KS54AHCT
T. = - 40°C to + 85°C ,T.= -55°C to +125°C
Unit
Vee = 5.0V :t: 10%
Vcc=5.0V:t: 10%

Typ

Min

60

36

Max

Min

Max

MHz

30

10

17

20

ns

13
13

21
21

25
25

ns

CL=50pF

~
tpHL
tw

SH/lD High
before ClKt
SER before ClKt
ClK INH before
before ClKt

Hold Time

Conditions t

(Input tr • tf~2 ns). AHCT166

tsu

8

12

15

8

12

15

8

12

15

8

12

15

8

12

15

Data before SH/lDt

8

12

15

ClR Inactive
before ClK

8

12

15

SH/lD High
after ClKt

5

8

10

SER after ClKt

5

8

10

ClK INH after ClKt

5

8

10

Data after SH/lDt

5

8

10

ClR Active
after ClKt

5

8

10

Input Capacitance
Power Dissipation Capacitance *

th

C'N
Cpo

5

ns

ns

II
ns

pF
pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

185

KS54AHCT
KS74AHCT

16101
169
01

Synchronous 4-Bit Up/Down
Decade and Binary Counters

FEATURES

DESCRIPTION

• Fully Synchronous Operation for Counting and Programming
• Internal Look Ahead for Fast Counting
• Carry Output for N-bit Cascading
• Fully Independent Clock Circuit
• Function, pin-out; speed and drive compatibility with
-54/14ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These synchronous presettable counters feature an internal
carry look-ahead for cascading in high-speed counting applications. The '168 is a decade counter and the '169 is
a 4-bit binary counter. Synchronous operation is provided
by having all flip-flops clocked simultaneously so that the
outputs change coincident with each other when so in·
structed by the count enable inputs and internal gating. This
mode of operation helps eliminate the output counting
spikes that are normally associated with asynchronous (rip·
pie clock) counters. A buffered clock input triggers the four
flip-flops on the rising (positive-going) edge of the clock
waveform.

PIN CONFIGURATION

UfD

Vee

ClK

RCa

A

OA

B

Os

C

Oc

D

00

ENP

ENT

GND

lOAD

These counters are fully programmable; that is, the outputs may each be preset to either level. The load input circuitry allows loading with the carry-enable output of
cascaded counters. As loading is synchronous, setting up
a low level at the load input disables the counter and causes
the outputs to agree with the data inputs after the next clock
pulse.
The carry look-ahead circuitry provides for cascading
counters for n-bit synchronous application without additional
gating. Instrumental in accomplishing this function are two
count-enable inputs and a carry output. Both count enable
inputs (ENP and ENT) must be low to count. The direction
of the count is determined by the level of the uio input.
When uio is high, the counter counts up; when low, it
counts down. Input ENT is fed forward to enable the carry
output. The ripple carry output (RCO) thus enabled will produce a low-level pulse while the count is zero (all inputs
low) counting down or maximum (9 or 15) counting up.
This lOW-level overflow carry pulse can be used to enable
successive cascaded stages. Transition at ENP or ENT are
allowed regardless of the level of the clock input.
These counters feature a fully independent clock circuit.
Changes at control inputs (ENP, ENT, LOAD, UiO) that will
modify the operating mode have no effect on the contents
of the counter until clocking occurs. The function of the
counter (whether enabled, disabled, loading, or counting)
will be dictated solely by the conditions meeting the stable
setup and hold times.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

c8SAMSUNG
Electrbnics

186

KS54AHCT
KS74AHCT

1681169
IJ

Synchronous 4-Bit Up/Down
Decade and Binary Counters

LOGIC DIAGRAMS

'168

I

c8SAMSUNG
Electronics

187

KS54AHCT
KS74AHCT

Synchronous 4·Blt Up/Down
Decade and Binary Counters

1681169

LOGIC DIAGRAMS

(continued)

LOAD ...,;(:,;;:.9:....)_---,

'169

(13)
B

Qa

(4)

C (5)

D (6)

'168

. lOjA:]:::+L
DATA
INPUT

'169

=

B~L=
~-

C-.J

: L.._

.,-D-----fJ -:-

ClK

.

aD::] .'
RCO::::~
: 7:: 8

9

0

1

2,

2

I II--COUNT UP-+INHIBIT~
...............

,
2: 1

LJr----0

9

~COUNT

8

DOWN--

lOAD

IIIstrated above is the following sequence:
1. Load (preset) to BCD seven
2. Count up to eight nine (maximum). zero, one, and two
3. Inhibit
4. Count down to one, zero (minimum). nine, eight, and seven

c8SAMSUNG
Electronics

7

"

w

~,

RCO::~

,

:' .

LJ

::
.13,' 14 15 0 1 2.
2,2 I 1
0 15 14 13
tJJ--COUNT UP--+INHIBIT~
J---COUNT DOWNlOAD

IIIstrated above is the following sequence:
1. Load (preset) to BCD seven
2. Count up to eight nine (maximum). zero, one, and two
3. Inhibit
4. Count down to one, zero (minimum), nine, eight, and seven

188

KS54AHCT
KS74AHCT

168'169
If

Synchronous 4-Bit Up/Down
Decade and Binary Counters

FUNCTION TABLE
OUTPUTS

INPUTS

OPERAllNG MODE
ClK

u/D

ENP

ENT

lOAD

Dn

an

RCO

Parallel load

t
t

X
X

X
X

X
X

I
i

i
h

L
H

(1 )
(1 )

Count Up

t

h

I

I

h

X

Count Up

(1 )

Count Down

t

I

I

I

h

X

Count Down

(1 )

Hold

t
t

X
X

h
X

X
h

h
h

X
X

qn
qn

(1 )
H

H=HIGH voltage level steady state
h=HIGH voltage level'one setup time prior to the LOW-to-HIGH clock transition
L= LOW voltage level steady state
I=LOW voltage level one setup time prior to the LOW-to-HIGH clock transition
X=Don't care
q=Lower case letters indicate the state of the referenced output prior to the LOW-to-HIGH clock transition
t=LOW-to-HIGH clock transition
NOTE:
1. The AGO is LOW when ENT is LOW and the counter is at Terminal Count Terminal Count Up is (HHHH) and Terminal
. Count Down is (LLlL) for '169.
The RCO is LOW when ENT is LOW and the counter is at Terminal Count. Terminal Count Up is (HLLH) and Terminal
Count Down is (LLLL) for '168.

Absolute Maximum Ratings·
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI> Vec +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vce +0.5V)
±35 rnA
Continuous Current Through
Vcc or GND pins . .
± 125 rnA
Storage Temperature Range, Tstg ... -65°C to +150' o C
Power Dissipation Per Package, Pdt ...... 500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
. Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vcc
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

189

I

KS54AHCT
KS74AHCT

16'01169
UI

Synchronous 4-Bit Up/Down
Decade and Binary Counters

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)
KS74AHCT
KS54AHCT
Ta= -40°C to +85°(: Ta = -55°C to +125°C Unit

Ta=25°C

Test Conditions

Typ

Guaranteed Limits

Minimum High-level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum low-level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/AA
10= -4mA

Vee -0.1
3,84

Vee -0.1
3.7

V

Maximum low-level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/AA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/AA

Maximum' Quiescent
Supply Current

Icc

8.0

80.0

160.0

/AA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Iee

Vee Vee -0.1
3.98 .
4.2
0

VIN=Vee Qr GND
lour=O/AA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0/AA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Maximum Operating Frequency

f max

Propagation Delay,
ClK to RCO

tpLH

T. =25°C
Vcc=5.0V

KS74AHCT
KS54AHCT
T.= -40°C to +85°C T.=-55°C to +125°C
Vcc=5.0V:t10%
Vcc=5.0V:t 10%

Typ

Min

50
14

40

Max

Min

35

MHz
27

14

20

27

~

12

18

22

tpHL

12

18

22

Propagation Delay,
ENT to RCO

-

Propagation Delay,
UfO to RCO

-

Pulse Duration,
ClK high or low

tPHL

1----

CL=50pF

tPLH

10

16

19

tpHL

10

16

19

tPLH

13

19

24

tpHL

13

19

24

tw

8

12

15
20

Setup Time,

A, B, Cor 0

9

15

Before ClKt

ENP or ENT

9

15

15

lOAD

9

15

20

UfO

9

15

.20

th

0

0

Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

Hold Time,
Data after ClKt

:

'0

0

Unit

Max

20

-

Propagation Delay,
ClK to Any Q

Conditions t

(Input tr, tf~2 ns), AHCT168, AHCT169

ns
ns
ns
ns
- -f---

ns

ns

ns
pF
pF

, * Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

190

KS54AHCT
KS74AHCT

173

4-Bit 0-Type Registers with 3-State Outputs

FEATURES

DESCRIPTION

• Gated output control lines for enabling or disabling
the outputs
• Fully independent clock for operation in parallel-load
or hold modes
• For application as bus buffer registers
• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOl = 24 mA @ VOL = O.5V for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 4-bit registers contain D-type flip-flops with 3-state outputs, capable of driving highly-capacitive or low-impedance
loads. This provides the device with the capability of being connected directly to and driving the bus lines in a busorganized system without need for interface or pull-up components,
Gated enable inputs are provided for controlling the entry
of data into the flip-flops. When both data-enable inputs
are low, data at the D inputs are loaded into their respective flip-flops on the next positive transition of the buffered
clock input. Gated output control inputs are also provided. When both are low, the normal logic states of the four
outputs are available for driving the loads or bus lines. The
outputs are di$abled independently from the level of the
clock by a high logiC level at either output control input.
The outputs then present a high impedance and neither
load nor drive the bus line. Detailed operation is given in
the function table.
To minimize the possibility that two outputs will attempt to
take a common bus to opposite logic levels, the output control circuitry is deSigned so that the average output disable
times are shorter than the average output enable times.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

PIN CONFIGURATION

M

Vee

N

ClR

10
20
30
40
ClK
GNO

10
20
3D
40
G2
G1

Input
ClR

H
L
L
L
L
L

elK

Output

Data Enable

Data

G1

G2

0

X
L

X
X

t
t
t
t

H

X
X
X
H
L
L

X
X
X
X
L
H

X
L
L

0
L

00
00
00
L

H

When either M or N (or both) is (are) high the output is disabled
to the high-impedance state; however sequential operation of the
flip-flo'ps is not affected.

c8SAMSUNG
Electronics

191

II

KS54AHCT 17~
KS74AHCT 10

4-Bit D-Type Register$'i with 3-State Outputs

LOGIC DIAGRAM

OUTPUT
CONTROL

{MI_(~1) - -

N-(2)-c1~-------------------'

o

(14)

DATA 10

------4---1--...
r----Q: ..... ClK

DATA {G1 (9)
ENABLE.G2 -~.J
(10)

DATA 20

ClR

o

~(13....:...)_ _+-_-+_-r-.....
e--t"~I"""

ClK
20
ClR

ClK

(12)

DATA 3 0 - - - - + - - - + - - - 1 - - . . .

30

(11)

0

0

DATA 40

ClK

a

(6)

40

ClR
CLR

c8SAMSUNG
Electronics

192

KS54AHCT
KS74AHCT

173

4-Bit D-Type Registers with3-State Outputs

Absolute Maximum Ratings·
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(V, < -0.5V or V, > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
. . . . . . . . . .. 4.5V to 5.5V
DC Input &. Output Voltages *, Y,N, Your
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
1nput Rise & Fall Times, t r , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Un'used inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed limits

Minimum High-Level
Input Voltage

V,H

2.0

2.0

Maximum Low-Level
Input Voltage

V,L

0.8

Minimum High-Level
Output Voltage

VOH

2.0

V

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

1----

V,N=V,H or V,L
10=-20/JA
10=-6mA
V,N=V,H or V,L
10= 2O/JA
10=12mA
10=24mA

Vee Vee -0.1
4.2
3.98

V
-.-t---

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

liN

V'N=Vee or GND

±0.1

±1.0

±1.0

/JA

Maximum 3-State
Leakage Current

loz

Output Enable
=V,H
Vour=Vee or GND

±0.5

±5.0

±10.0

/J A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/J A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

blcc

V'N=Vee or GND
10ur=0/JA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=0/JA

=8~SUNG

0

193

II

KS54AHCT
KS74AHCT

173

4-Bit D-Type Registers with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

fmax

Propagation Delay,
ClK to any Q

Pulse Width

ClK High
or low

Hold Time
After ClKt

Max

25

MHz
25
31

tpHL

CL=50pF
CL=150pF

13
16

21
26

25
31

tpHL

CL=50pF
CL=150pF

15
18

25
30

30
36

CL"'"50pF
CL"'"150pF

12
15

20
25

24
30

CL"'"50pF
CL"'"150pF

1.2
15

20
25

24
30

10

17

20

10

17

20

tpZH

-

-

tpHZ

ns

ns

RL = 1 kO

RL = 1kO, CL =50pF

tpLZ

7

12

15

7

12

15

tsu

8

15

20

7

12

15

7

12

15

th

-3

0

0

-3

0

0

CIN

Output Cipacitance

COUT Output Disabled

Power Dissipation
Capacitance *

Cpo

ns

ns

tw

Data

Input Capacitance

30

Min

21
26

CLR
Inactive
G1 and <32

50

Max

13
16

G1 and G2
Data

Min

CL=50pF
CL=150pF

CLR High
Setup Time,
before ClKt

Typ

tpLH

tPZL
Output Disable Time,
M or N to any Q

KS74AHCT
KS54AHCT
Ta=25°C
T.= -40°C to +85°C Ta= -55°C to +125°C
Unit
Vcc=S.OV
Vcc=S.OV±10%
Vcc=5.0V± 10%

ns

Propagation Delay,
ClR to any Q
Output Enable Time,
M or N to any Q

Conditions t

Symbol

Maximum Clock Frequency

(Input tr , tf~2 ns), AHCT173

ns

ns

5

pF

10

pF
pF
2

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

194

KS54AHCT
KS74AHCT

174/175.

Hex/Quad O-type Flip-Flops
with Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '1 74 contains six, and the' 1 75 contains four D·type
filp·flops all sharing a common clock and a common clear.
The '1 74 features single nail outputs for every flip-flops
whereas the '175 has complementary outputs.
Information at the D inputs meeting the setup time requirements is transferred to the 0 outputs on the positivegoing edge of the clock pulse. Clock triggering occurs at
a particular voltage level and is not directly related to the
transition time of the positive-going pulse. When the clock
input is at either the high or low level, the D input signal
has no effect at the output.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

PIN CONFIGURATIONS

'174

(Each Flip-Flop)
Inputs

Outputs

CIA

Vee

10
10

60

CLR

CLK

D

a

at

60

L

x

X

L

H

20

50

H

L

50

't
t

H

20

H
H
H

L
X

L

H

40

30

40
CLK

GNO

L

00 00

t '175 only

'175
CLR

Vee

10
10
10
20
20

40
40

30

20

30

GNO

c8SAMSUNG
Electronics

40
30

CLK

195

I

KS54AHCT
KS74AHCT

1741175

Hex/Quad D-type Flip-Flops
withe/ear

LOGIC DIAGRAMS
'175

'174
(3)
10

(4)

(2)
0

a

la

0

10

CLOCK

la

a
CLOCK

10
CLEAR

CLEAR

(4)

(5)

(5)

0

20

a

2a

(7)

a

0

20

CLOCK

CLOCK

a

(6)

(12)

(7)

a

0

(6)

20

CLEAR

CLEAR

3D

2a

3a

3D

a

0

(10)
3a

CLOCK

a

(11)
30

CLEAR

(11)

4a

a

(15)

(13)

(10)

4D

a

0

40

4a

(9)
CLK

CLOCK

(14)
0
CLEAR

40

CLEAR

CLR

50

(13)

(12)
0

a

50

CLOCK

CLEAR

(15)

(14)
60
CLK

a

0

6a

CLOCK

CLEAR

CLR

c8SAMSUNG
Electronics

196

KS54AHCT
KS74AHCT

1741175.

Hex/Quad D-type Flip-Flops
with Clear

Absolute Maximum Ratings·
Supply Voltage Range Vee, .. ,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
±125 mA
Vee or GND pins. . . . . . . .
Storage Temperature Range, TSlg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce . . . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond
whieh permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

. Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta=-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level.
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/AA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/AA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

/AA

8.0

80.0

160.0

/AA

2.7

2.9

,3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Ice

.6.lee

VIN=Vee or GND
10uT=0/AA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10UT=0/AA

c8SAMSUNG.
Electronics

Vee Vee -0.1
3.98
4.2
0

'197

II

KS54AHCT 1~~/1~~
KS74AHCT
'/

Hex/Quad D-type Flip-Flops
with Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

f max

(Input t r , ft:~2 ns), AHCT174, AHCT175
KS74AHCT
KS54AHCT
T A=25°C TA== -40°C to +85°C TA= -55°C to +125°C
Vee == 5.0V
Vee==5.0V±10%
Vee=5.0V± 10%
Unit
Typ

Min

70

50

Max

Min

11

Input Capacitace

CIN

Power Dissipation Capacitance *

Cpo

5

--------------- ---------

MHz

20

o

>-------'---"-----~----------_+--"-'---+--

Max

40

0

+------------ -

o

ns

ns

pF

---------------t---------------l---------I---'----!

pF

* CPD determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SA~SUNG
Electronics

198

KS54AHCT
KS74AHCT

181

Arithmetic Logic Unitt
Function Generator

FEATURES.

DESCRIPTION

• Arithmetic operating modes:
Addition
Subtraction
Shift operand A one position
Magnitude comparison
Plus 12 other arithmetic operations
• Logic function modes:
Exclusive-OR
Comparator
AND,NAND,OR, NOR
Plus 10 other logic operations
• Full look-ahead for high-speed operations
on long words

The '1 81 is an Arithmetic LogiC Unit (ALU)/Function
Generator that performs 1 6 binary arithmetic operations
on two 4-bit words as shown in table 1 and 2. These operations are selected by the four functions select lines (SO,
S1, S2, S3) and include addition, subtraction, decrement
and straight transfer. When performing arithmetic manipulations, the internal carries must be enabled by applying a
low level voltage to the mode control input(M). A full carry
look-ahead scheme is made available in these devices for
fast, simultaneous carry generation by means of 2 cascadeoutputs (p and (3) for the 4-bits in the package. When used in conjunction with AHCT182, high-speed arithmetic
operation can be performed. The typical addition times
shown in table below illustrates how little is required for
addition of longer words when full carry look-ahead is
emploved.

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current Outputs:
IOl=8mA @ VOl=O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include plastic "small outline"
packages, standard plastic and ceramic 300-mil DIPs

If high speed is not important, a ripple-carry input (C n ) and
a ripple-carry output (C n+4) are available. However, the
ripple-carry delay has also been minimized so that arithmetic
manipulations for small lengths can be performed· without
external circuitry.
The '1 81 will accommodate active-high or active-low data,
if the pin deSignations are interpreted as shown below.
Subtraction is accomplished by 1 's complement addition
where the 1 's complement of the subtrahend is generated
internally. The resultant output is A-B-1 , which requires and
end-around or forced carry to provide A-B.
The '181 can also be utilized as a comparator. The A=B
output is internally decoded from the function outputs (Fa,
F1, F2, F3) so that when two words of the equal magnitude
are applied at the A and B inputs, it will assume a high level'
to indicate equality (A=B). The ALU should be in the subtract mode with Cn=H when performing the comparison.
The A=B output is open-drain so that it can be wire-AND
connected to give a comparison for more than four bits.
The carry output (C n+4) can also be used to supply
relative magnitude information. Again, the ALU should be
placed in the subract mode by placing the function select
input S3, S2, S1, SO at L,H,H,L respectively.

PIN CONFIGURATION
BO
AO
S3
S2
S1
SO

Vee

A1
B1
1\2
B2
A3
B:3
G

C"
M

FO
F1
F2

These circuits have been designed to not only incorporate
all of the designer's requirements for arithmetic operations,
but also to provide 16 possible functions of two boolean
variables without the use of external circuitry. These logical
functions are selected by use of the four function select
inputs (SO, S1, S2, S3)with the mode control input (M)
at a high level to disable the internal carry.
The 16 logic functions are detailed in Tables 1 and 2 and
include exclusive-OR, NAND, AND, OR and NOR functions.

C,,+4

15
A=B

F3

GND

2

1

23

22

21

20

19

18

9

10

11

13

7

16

15

17

Ao

Bo

A1

81

A2

82

A3

83

Fa

F1

F2

F3

'Cn

Cn+4

P

G

Active-High Data (Table 2) Ao

Bo

A1

B1

A2

B2

A3

B3

Fa

F1

F2

F3

Cn

Cn+4

X

Y

Pin number
Active-Low Data (Table1)

=8SAMSUNG
Electronics

199

II

KS54AHCT
KS74AHCT

181

Arithmetic Logic Unitl
Function Generator

ALU SIGNAL DESIGNATION
The '181 can be used with the signal designations.
The logic functions and arithmetc operations obtained with
signal designations as in Table 1.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS P?wer levels. The input and output voltage levels

allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

~;

(3)
(4)

81-----.
80

(16)

»-_ _ _Q..-/--- Cn +4
(15)

P

(13) _
>--<_--F3

(11) _
F2

81 (22)

(23)
A1
(10) _
F1

(1)
80
(9) FO
AO (2)

M
Cn

(7)

"'7

c8SAMSUNG
Electronics

200

181

KS54AHCT
KS74AHCT

Arithmetic Logic Unit/
Function Generator

o Table 1
Actl¥fH.ow Dati

Selection

M = L; Arithmetic Operations

M=H
S3

S2

S1

SO

Logic
Functions

L
L
L
L
L
L
L
L
H
H
H

L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H

L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H

L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H

F=A
F=AB
F=A + B
F=1
F=A + B
F=B
F=A?eB
F=A + B
F=AB
F=A EEl B
F=B
F=A + B
F=O
F=AB
F=AB
F=A

H
H
H
H
H

Cn=L
(no carry)

Cn=H
(with carry)

F=A Minus 1
F=AB Minus 1
F=AB Minus 1
F=Minus 1 (2's Camp)
F=A Plus (A + S)
F=AB Plus (A + S)
F=A Minus B Minus 1
F=A + B
F=A Plus (A + B)
F=A Plus B
F=AS Plus (A + B)
F=(A + B)
F=A Plus A*
F=AB Plus A
F=AB Plus A
F=A

F=A
F=AB
F=AB"
F=Zero
F=A Plus (A + "8) Plus 1
F=AB Plus (A + B) Plus 1
F=A Minus B
F=(A + B) Plus 1
F=A Plus (A + B) Plus 1
F=A Plus B Plus 1
F=A'e Plus (A + B) Plus I
F=(A + B) Plus 1 •
F=A Plus A Plus. 1
F=AB Plus A Plus 1
F=AB Plus A Plus 1
F=A Plus 1

II

o Table 2
Active-High Data

Selection

M = L; Arithmetic Operations

M=H
S3

S2

81'

80

L
L
L
L
L
L
L
L
H

L
L
L
L
H
H
H
H
L
L
L
L
H

L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H

L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H

H
H

H
H

H

H

H
H

H
H

logic
Functions

tn=l
(no carry)

Cn=H
(with carry)

F=A
F=A+B
F=AB
F=O
F=AS
F=B

F=A
F=A + B
F=A + B
F=Minus 1 (2's Camp)
F=A Plus AS
F=(A + B) Plus AS
F = A Minus B Minus 1
F=AB Minus 1
F=A Plus AB
F=A Plus B
F=(A + B) Plus AB
F=AB Minus 1
F=A Plus A*
F=(A + B) Plus A
F=(A + B) Plus A
F=A Minus 1

F=A Plus 1
F=(A + B) pius 1
F=(A +B) Plus 1
F=Zero
F=A Plus AS Plus 1
F=(A + B) Plus AS Plus 1
F=A Minus B
F=AB
F=A Plus AB Plus 1
F=A Plus B Plus 1
F=(A + B) Plus AB Plus 1
F=AB
F=A Plus A Plus 1
A=(A + B) Plus A Plus 1
F=(A + B) Plus A Plus 1
F=A

F=~

F=AS
F=A + B
F=A $B
F=B
F=AB
F=1
F=A + B
F=A + B
F=A

* Each bit is shifted to the next more significant position

c8SAMSUNG
Electronics

201

KS54AHCT
KS74AHCT

181

Arithme-tic Logic Unit/
Function Generator

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) ......... ±35 mA
Continuous Current Through
Vcc or GND pins . . . . . . . . . . . . . . .. ± 125 mA
Storage temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditioos
Supply Voltage, Vee .............. 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . ov to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
IKS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these cotlditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

T.=25°C

Symbol Test Conditions

Typ

KS54AHCT
KS74AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input .Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20l-'A
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20l-'A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

. 0.1
0.4

Maximum Input
Current

hN

VIN=Vce or GND

±0.1

±1.0

±1.0

IJ.A

Maximum Quiescent
Supply Current

Ice

VIN=Vee or GND
10uT=0l-'A

8.0

80.0

160.0

IJ.A

Additional Worst
Case Supply
Current

per input in
VI=2.4V
t.lee other Inputs:
a.t Vee or GND
10UT=0l-'A

2.7

2.9

3.0

mA

••

qsSAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

V

202

KS54AHCT
KS74AHCT

181

Arithmetic Logic Unitt
Function Generator

INPUT PAIRS HIGlfi/NOT HIGH TEST TABLE
FUNCTION INPUTS: S~! M 4.5 V,
S1 S3 0

= =

PARAMETER

INPUT
UNDER
TEST

tpLH

OTHER INPUT
SAME BIT
APPLY 4.5 V

OTHER DATA INPUTS

APPLY GND

;!;i

Si

None

Bi

Ai

None

so = = = v

Ai

Bi

None

APPLY GND

TEST

Remaining

e

p

A, Cn

In-Phase

Remaining

Remaining

p

In· Phase

B, Cn

A

Remaining

Remaining

e

Cn+4

Out-ot-Phase

A, Cn
Remaining

Remaining

e, Cn

Cn+4

Out-ot-Phase

A

OUTPUT

OUTPUT

UNDER

WAVEFORM

tpHL
tpLH

Bi

Ai

None

WAVEFORM

Remaining

tpHL
tpHL

OUTPUT

UNDER

APPLY 4.5 V

tpHL
tpLH

OUTPUT

tPHL

PARAMETER MEASUREMENT INFORMATION
SUM MODE TEST TABLE
FUNCTION INPUTS: SO S3 4.5 V, S1 S2

= =

INPUT
PARAMETER
tpLH

UNDER

OTHER INPUT
SAME BIT

TEST

APPLY 4.5 V

APPLY GND

Ai

Bi

None

tpHL
tPLH

tPLH

OTHER DATA INPUTS
APPLY 4.5 V
Remaining
A and B

Bi

Ai

None

tpHL

Remaining
A andB

Ai

Si

None

None

tpHL
tpLH

Bi

Ai

None

None

Ai

None

-

Bi

tpHL
tpLH

Bi

None

Ai

tpHL
tpLH
tpi-tL
tpLH

Cn

None

Ai

None

None

"Bi

tpHL
tpLH
tpHL

Bi

None

.c'SAMSUNG
-C
.
ElectrOnics

APPLY GND

TEST

Cn

Fi

In-Phase

Cn

Fi

In-Phase

15

In-Phase

15

In-Phase

G

In-Phone

G

In-Phase

Remaining

A and S,

Cn

Remaining
A and S, Cn

tpHL
tpLH

II

= =M =0 V

Ai

Remaining

Remaining

8

A, Cn

Remaining

Remaining

S

A, Cn

All

All

AnyF

A

B

or Cn+4

Remaining

Remaining

B

A, Cn

Remaining

Remaining

B

A, Cn

In-Phase

Cn+4

Out-ot-Phase

Cn+4

Out-ot-Phase

203

KS54AHCT
KS74AHCT

181

Arithmetic Logic Unitt
Function Generator

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t
CL=50pF

tpLH

Propagation Delay,
Cn to Cn +4

f-------

Propagation Delay,
A orSto Cn +4

f-------

Propagation Delay,
A orB to Cn +4

f-------

Propagation Delay
AorBtoG

f-------

Propagation Delay

A. or Ijto G'
Propagation Delay

Po. orBto

P

tpHL
tPLH
tpHL

TPLH

tpHL·
tPLH

tpHL
tpLH

f-------

tpHL
tPLH

f-------

tPHL
tpLH

·Propagation Delay
A or B to is"

f-------

Propagation Delay
A or B to Fi

f-------

Propagation Delay

Po. or B to Fi
Propagation Delay
A orB to ~
Propagation Delay

Po. orB to A=B

tpHL
tpLH

tpHL
tPLH

M=SO=S3=OV
S1 =S2=4.5V

Max

16

24

29

16

24

29

17
17
17
·17
17

25

30

25

30

25

30

17

25

30

25

30

25

30

15

23

27

15

23

27

M=S1 =S2=OV
SO=S3=4.5V

16

24

29

16

24

29

M=S1 =S2=OV
SO=S3=4.5V

20

29

35

20

29

35
32

M=4.5V

tPZL
tpLH

Min

M=SO=S3=OV
S1 =S2=4.5V

tPLH

tpLZ

Max

17
17

M=SO=S3=OV
S1 =S2=4.5V
M=S1 =S2=OV
SO=S3=4.5V

Min

14
14

M=S1 =S2=OV
SO=S3=4.5V

tpHL
r---

Typ
8
8

M=SO=S3=OV
S1 =S2=4.5V

r---

KS74AHCT
KS54AHCT
T. =25°C
T. = -40°C to +85°C T.= -55 D C to +125°C
Vcc=5.0V
Unit
Vcc=5.0V:t10%
Vcc=5.0V:t 10%

M=OV,
Suiii or Diff Mode

tpHL

f-------

(Input tr , t~2 ns), AHCT181

M=SO=S3=OV
S1 =S2=4.5V

19

27

19

27

16

24

32
29

16

24

29

19

27

32

16

24

29

Propagatio!! Delay
Cn to any F

I-'---

15

23

24

tpHL

15

23

27

Ihput Capacitance

CIN

5

ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF

Power Dissipation Capacitance *

pF

c8SAMSUNG
Electronics

204

Cpo
* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

KS54AHCT
KS74AHCT

181

Arithmetic Logic Unitl
Function Generator

PARAMETER MEASUREMENT INFORMATION
LOGIC MODE TEST TABLE
FUNCTION INPUTS: 51 52 M 4.5 v, SO

= = =

INPUT
PARAMETER

UNDER
TEST

tpLH

Ai

OTHER INPUT
SAME BIT
APPLY 4.5 V
Si

OTHER DATA INPUTS

APPLY GND
None

APPLY 4.5 V

APPLY GND
Remaining

None

A and

tpHL
tpLH

=53 =0 v

Bi

Ai

None

OUTPUT

UNDER

WAVEFORM

TEST
Fi

Out-ot-Phase

Fi

Out-ot-Phase

S, C n

Remaining

None

OUTPUT

A and S, C n

tpHL

INPUT BITS EQUAL/NOT EQUAL TEST TABLE
FUNCT10N INPUTS: SO 53 M 4.5 V, 51 S2 0 V

= = =

INPUT
PARAMETER

UNDER
TEST

tpLH

Ai

OTHER INPUT
SAME BIT
APPLY 4.5 V
Si

APPLY GND
None

tPHL
tpLH

Si

Ai

None

tpHL
tpLH

Ai

None

Si

Bi

None

Ai

tpHL
tpLH

Ai

Si

None

tpHL
tpLH

Si

Ai

None

tpHL
tpLH

Ai

None

Remaining

A and
A and

Bi

Bi

None

c8SAMSUNG

Ai

OUTPUT

OUTPUT

UNDER

WAVEFORM

APPLY GND

TEST

None

j5

Out-ot-Phase

None

P

Out-ot-Phase

None

P

In-Phase

None

15

In-Phase

None

C n +4

In-Phase

None

C n+4

In-Phase

None

C n +4

Out-of-Phase

None

C n +4

Out-ot Phase

S, C n

Remaining
S, en

Remaining

Remaining

A and S,

en

Remaining

A and S,

Cn

Remaining

S,

Cn

Remaining
A and

tpHL

Electronics

APPLY 4.5 V

A and

tpHL
tPLH

OTHER DATA INPUTS

A and S, Cn

tpHL
tPLH

= =

S,

en

Remaining

A and S,

Cn

205

II

KS54AHCT
KS74AHCT

181

Arithmetic Logic Unit!
Function Generator

DIFF MODE TEST TABLE
FUNCTION INPUTS: S1 S2 4.5 V,

so =S3 =M =0 v

= =

PARAMETER

INPUT

OTHER INPUT

UNDER

SAME BIT

TEST
tpLH

Ai

APPLY 4.5 "oj
None

APPLY GND
Si

tpHL
tpLH

Si

Ai

None

APPLY 4.5 V

. APPLY GND

Remaining

Remaining

A

S, C n

Remaining

Remaining

A

tpHL
tPLH

OTHER DATA INPUTS

Ai

None

Bi

None

Bi

Ai

None

None

tPHL
tpLH

Ai

Si

None

None

Si

None

Ai

None

Ai

None

Bi

tpHL
tpLH

Bi

Ai

None

Remaining

A
Remaining

tpHL

A

tpLH

All

Cn

None

None

Ai

Bi

None

None

A and B,

Fi

In-Phase

Fi

Out-ot-~hase

15

In-Phase

15

Out-ot-Phase

..

.-

Cn

Remaining

A and B,

Remaining

S,

Cn

Remaining

B,

Bi

None

tpHL

=8SAMSUNG
Electronics

Ai

None

In-Phase

_._-

G

Out-ot-Phase

A==B

In-Phase

A==B

Out-ot-Phase

Cn

Remaining

S,

G

Cn

Cn

None

....

C n+4
or any

Remaining

A, S, C n

tpHL
tPLH

Remaining

A and S

tpHL
tpLH

TEST

Cn

Remaining

A and

tpHL
tpLH

WAVEFORM

--

tpHL
tpLH

OUTPUT

UNDER

A and S, C n

tPHL
tpLH

S,

OUTPUT

Remaining

A, B,

Cn

In-Phase

F

C n+4

Out-ot-Phase

C n+4

In-Phase

206

KS54AHCT
KS74AHCT

182
Look Ahead Carry Generator

FEATURES

DESCRIPTION

• Compatible Carry Functions for direct ALU connection
• Cascadable to perform look-ahead across n-bit
adders.
• High output current drive: IOL=8mA @ VOL= O.5V
• Low power consumption characteristic of CMOS
• Direct interface capability to TTL, NMOS and CMOS
devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:

The '182 is a high-speed, look-ahead carry generator,
capable of anticipating a carry across four binary adders
or group of adders. These devices can be cascaded to
perform full look-ahead across n-bit adders. Carry,
generate-carry, and propagate-carry functions are provided
as shown in the pin deSignation table.

KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

Carry input and output of the ALU's are in their true from,
and the carry propagate (P) and carry generate (G) are in
negated form; therefore, the carry functions (inputs, outputs, generate, and propagate) of the look-ahead
generators are implemented in the compatible forms for
direct connection to the ALU. Reinterpretations of carry
functions, as explained on the 181 data sheet are also applicable to and compatible with the look-ahead generator.
Logic equations for the 182 are:

PIN CONFIGURATION

"G"1
P1
GO

"G2

Po

Cn

G3
P3

Cn + x

When used in conjuction with the AHCT181 arithmetic logic
unit, these generators provide high-speed carry look-ahead
capability for any word length. Each 182 generates the
look-ahead (anticipated carry) across a group of four ALUs
and, in addition, other carry look-ahead circuits may be
employed to anticipate carry across sections of four lookahead packages up to n-bits. The method of cascading circuits to perform multi-level. look-ahead is illustrated under
typical application data.

Vee

P2

Cn+x=GO + PO Cn
Cn+y=G1 + P1 GO + P1 PO Cn
Cn+z=G2 + P2 G1 + P2 P1 GO + P2 P1 PO Cn
G=G3 + P3 G2 + P3 P2 G1 + P3 P2 P1 GO
P-P3 P2 P1 PO

Cn + y

p

G

GND

C n+ z

PIN DESIGNATIONS

DeSignation

Pin No

Function

GO,G1,G2,G3

3,1,14,5

Active Low Carry Generate Inputs

PO,P1,P2,P3

4,2,15,6

Active Low Carry Propagate Inputs
Carry Input, Active HIGH

Cn

13

Cn+x,Cn+Y,Cn+z

12,11,9

G

10

P

7

Vcc

16

Supply Voltage

GND

8

Ground

=8SAMSUNG
Electronics

Carry Outputs
Active Low Carry Generate Output
Active Low Carry Propagae Output

207

I

KS54AHCT
KS74AHCT

182
Look Ahead Carry Generator

FUNCTION TABLES

LOGIC DIAGRAM

FOR GOUTPUT
INPUTS

OUTPUT

<33

G2

G1

GO

P3

P2

P1

~

L

X

X
X
X

L

X
X

X
X
X
L

X
L
L
L

X
X
L
L

X
X
X
L

L
L
L
L
H

X
L
X
X
All other combinations

OUTPUT

L

INPUTS

OUTPUT

PO

P

GO

PO

Cn

'C n+ x

L L L
All other

L

L

X

X

H

X L H
All other

H
H

P3 P2 P1

combinations

L

combinations
Cn+y OUTPUT

j52 (15)

G2

(14)

OUTPUT

INPUTS

<31

GO

P1

PO

Cn

C n+ y

L

X

X

X

X
X

L

L
L

X
X
L

H
H
H
L

X

~

FOR C n + x OUTPUT

FORPOUTPUT
INPUTS

\7)

X
H

All other combinations

P1 '(2)
<31 .:....(1..:....)t---t-+--H~

Cn+z OUTPUT
OUTPUT

INPUTS

G2

G1

L

X

X
X
X

GO

P2 P1

X
X X
L
X
L X
L
X
L
L
L
X
X
L
All other combinations

PO

Cn

Cn+z

X
X
X

X
X
X

L

H

H
H
H
H
L

H = high-level, L = low level, X = don't care
Any inputs not shown in a given table are don't care
with respect to that output.
Figure; THE '182 IN A 64-BIT LOOK-AHEAD CARRY CIRCUIT

'qsSAMSUNG
Electronics

208

KS54AHCT'182
KS74AHCT

Look Ahead Carry Generator

Absolute Maximum Ratings·
Supply Voltage Range Vce. . ...... -0.5V to + 7V
DC Input Diode Current. hK
(VI < -0.5V or VI > Vec +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vcc +0.5V) . . ..
±35 mA
Continuous Current Through
Vcc or GND pins . . . . . . . . . . . . .
± 125 mA
Storage Temperature Range, T519 . . . -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vcc
4.5V to 5.5V
DC Input & Output Voltages *. VIN. Your . . OV to Vee
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times. tr • tf . .
Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

-

(Vcc=5V+ 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltag.e

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-2OIAA
10=-4mA

Vee -0.1
3.84

Vec -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=201AA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

IAA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vcc or GND

±0.5

±5.0

±10.0

iJ A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

j.lA

2.7

2.9

3.0

mA

, Additional Worst
Case Supply
Current

~Icc

VIN=VCC or GND
10ur=OiJA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=OiJA

c8SAMSUNG
Electronics

Vcc Vee -0.1
4.2
3.98
0

209

II

KS54AHCT
KS74AHCT

182

Look Ahead Carry Generator

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input t r • ttE02 ns). AHCT182
KS74AHCT
KS54AHCT
T. =25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.0V
Vco=5.0V:t 10%
Vcc=5.0V::!:10%
Typ

Propagation Delay.
Pi or Gi to Cn+xCn+ y • Cn+ z

~
tpLH

Propagation Delay.
Pi or Gi to G

I--

Propagation Delay.

~

C n to Cn+ x. Cn+ y • Cn+ z

CL=50pF

tpHL

CL=50pF

tpHL
CL=50pF

tpHL

Min

Max

Min

Max

12

20

24

12

20

24

12

20

24

12

20

24

15

21

26

15

21

26

11

18

21

tP'HL

11

18

21

Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

Propagation Delay

PitoP

tpLH

I--

CL=50pF

ns

ns

ns

ns
pF
pF

* Cpo determines the no·load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8 SAMSUNG
Electronics

JCTOR

210

KS54AHCT
KS74AHCT

183
Dual Carry-Save Full Adders

FEATURES

DESCRIPTION

-

The '1 83 is a dual full adder features an individual carry
output from each bit for use in multiple-input, carry· save
techniques to produce the true sum and true carry out·
puts with no more than 2 gate delays.

For use in high-speed wallace-tree summing
Fast addition operation
Low power consumption characteristic of CMOS
High output current drive: IOL 8mA @ VOL O.5V
Direct interface capability with TTL, NMOS and
CMOS devices
-Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to + 85°C
KS54AHCT: - 55°C to + 125°C

=

=

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

- Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

LOGIC DIAGRAM

A..
NC

Vee
At,

B.

S.

S.
Cb
Cob
NC

GND

St,

c.
Coa

II

C

FUNCTION TABLE
(Each Half)

Output

Inputs

A

B

L
H
L
L
H
H
L
H

L
L
H
L
H
L
H
H

c8SAMSUNG
Electronics

C

S

Co

L
L
L
H
L
H
H
H

L
H
H
H
L
L
L
H

L
L
L
L
H
H
H
H

211

183

KS54AHCT
KS74AHCT

DUB' CBrry-8Bve Full Adders

Absolute Maximum Ratings·

of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Sup~ly Voltage Range Vcc, .. . . . . . ~0.5V to + 7V

DC Input Diode Current, 11K
(VI < -0.5V or VI > Vcc +0.5V) . . . .. ±20 mA
DC Output Diode- Current, 10K
(Va < -0.5V or Va > Vce +0.5V) . . .. ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Va < Vcc +0.5V) ......... ±70 mA
Continuous Current Through
Vcc or GND pins . . . . . . . . . . . . . ... ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, fr, tf . . . . . . . . . Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)
KS54AHCT
KS74AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Ta=25°C

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OI-'A
lo=-4mA

Vee -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2OiJA
lo=4mA
lo=8mA

0.1
0:26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

iJA

Maximum Quiescent
Supply Current

Icc

VIN=Vee or GND
IOUT=OiJA

2.0

20.0

40.0

iJA

Additional Worst
Case Supply
Current

per input in
VI=2.4V
.t.lec other Inputs:
at Vee or GND
IOUT=OiJA

2.7

2.9

3.0

rnA

Vee Vee -0.1
4.2
3.98
0

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input tr , t~6 ns), AHCT183
KS74AHCT
KS54AHCT
T.=25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Vee = 5.0V
Unit
Vce=5_0V± 10%
Vee=5.0V±10%
Typ

Min

Max

Min

Max

10

15

18

tpHL

13

20

24

Input CapaCitance

CIN

5

Power dissipation Capacitance·

Cpo

Propagation Delay

~

CL=50pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

ns
pF
pF

fin.

212

KS54AHCT
KS74AHCT

190

Synchronous 4-Bit Up/Down
Decade Counters

FEATURES

DESCRIPTION

• Single down/up count control line
• Look-ahead circuit enhances speed of cascaded
counters
• Fully synchronous In count modes
• Asynchronously presettable with load control
• Function, pilH)ut, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.SV to 5.SV
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small ·:;utline" packages
(Available Tape & Reel), standard DIPs.

These are high-speed synchronous reversible 4-bit decade
counters. Synchronous counting operation is provided by
having all flip-flops clocked simultaneously SO that the outputs change with each other when so instructed by the
steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous
(ripple clock) counters.

B

Vee

A

aA

CLK

ROO

CTEN

Diu

MAXIMIN

ae

~

aD

C

GND

D

FUNCTION TABLE
OPERATING MODE

parallel load

INPUTS

OUTPUTS

ilOOI

DID

~

ClK

Input

L
l

X
X

X
X

X
X

L
H

On

counl up

H

L

I

t

X

counl up

H

H

I

t

X

count down

hold (do nothing)

H

X

H

X

X

no change

~-

~ AND MAXIMIN FUNCTION TABLE

TERMINAL COUNT STATE

INPUTS

H
l
I

eTER

ClK

OA

08

Oc

H
l
l
l
H
H

H

X
X

H
H
H
L
l
l

X
X
X

X
X
X

L
l
l

L
l
l

z

=
=
X =
t =
l..f -

""L =

H
l
H

LS

H

X
X

l

LS

OD
H
H
H·
l
l
l

Two outputs have been made available to perform the
cascading function: ripple clock and maximum/minimum
count. The latter output produces a high-level output pulse
with a duration approximately equal to one complete cycle
of the clock while the count is zero (all outputs low) counting
down or maximum (9 or 15) counting up. The ripple clock
output produces a low-level output pulse under those same
conditions but only while the clock output to the enable
input of the succeeding counter if parallel clocking is used,
or to the .clock input if parallel enabling is used_ The
maximumlminimum count output can be used to accomplish
look-ahead for high-speed operation_

L

H

count down

DID

These counters feature a fully independent clock circuit.
Changes at the control inputs (CTEN and DID) that will
modify the operating mode have no affect on the contents
of the counter until clocking occurs_ The function of the
counter will be dictated solely by the condition meeting
the stable setup and hold times.
These counters are fully programmable; that is, the outputs may each be preset to either level by plaCing a low
on the load input and entering the desired data at the data
inputs. The output will change to agree with the data inputs independently of the level of the clock input. This
feature allows the counters to be used as modulo-N dividers
by simply modifying the count length with the preset inputs.

PIN CONFIGURATION

as

The outputs of the four flip-flops are triggered on a low-tohigh-level transition of the clock input if the enable input
(CTEN) is low_ A high at CTEN inhibits counting. The direction of the count is determined by the level qf the downlup
(DID) input. When DID is low, the counter counts up and
when DID is high, it counts down.

OUTPUTS

MAXlMINr~
L
H

H
H

L

LS

l
H

H
H

L

LS

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

HIGH voltage level
lOW voltage level
lOW voltage level one setup lime prior to the LOW·to-HIGH ClK transition
Don't cere
lOW-la-HIGH CLK Iransilior>
one LOW level pulse
MAXIMIN goes lOW ON A lOW-la-HIGH CLK Iransition

c8SAMSUNG
Electronics

213

a

190

KS54AHCT
KS74AHCT· .

Synchronous 4-81t Up/Down
Decade Counters

LOGIC DIAGRAM

CTEN

DIU
ClK
lOAD

A

c

Typical load, count, and Inhibit sequences

:~.' :~~

(1) Load (preset) to BCD seven.

cSTJ'L

(2) Count up to eight, mine(maximum)

".'{O..
INPUTS'

I

I.

I

I

:

I

,

"

Sequence;

=

r -

.. o-+f- -

zero, one, and two.
(3) Inhibit

--------'

(4) Count down to one, zero

-=~j==~-:

(minimum), nine,egiht,
and seven

,

:

,

:

NOTE A: Clear overrides load data, and count inputs.

M"~'~:~L-_-;"_---;'---:-'--..JnL_ __
RC;--~r-';-i----u

U'---

Note B:When count up, count-down input must be high;
when counting down, countup intput must be high.

--- i 'i~--:oU"U:__+'NH""~' !---COUNTDOWN----/
~

ci$SAMSUNG
Electronics

.

214

KS54AHCT
KS74AHCT

190

Synchronous 4-Bit Up/Down
Decade Counters

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 rnA
Continuous Current Through
Vee or GND pins
± 125 rnA
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, Your
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these eOlldltions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vce or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

K5.S4AHCT
KS74AHCT
Ta = -40°C to +85°C Ta= -55°C to +1~~ Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

Maximum Low-Level
Input Voltage

VIL

2.0

2.0

2.0

0.8

0.8

0.8

V

f---------~-~----

--

Vce -0.1
3.7

V

-- ----

-----~----.-

----~

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2Ol-lA
10=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20l-lA
10=4mA
10=8mA

Maximum Input
Current

hN

VIN=Vec or GND

Maximum Quiescent
Supply Current

Icc

V

Vee Vee -0.1
4.2
3.98
0

Vee -0.1
3.84

0.1
0.26
0.39

0.1
0.33
0.5 ----_ .. -

0.1
0.4

V

±0.1

±1.0

±1.0

I-IA

8.0

80.0

160.0

I-IA

2.9

3.0

rnA

- -

VIN=Vec or GND
10ur=0l-lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=0l-lA

----~--------

[::-itional Worst

lease
Sopply
Current

~Ice

=8 ~t'!'ISUNG

1-----

i-----~

2.7

215

II

KS54AHCT
KS74AHCT

190

Synchronous 4-Bit Up/Down
Decade Counters

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input tr , tt~2 ns), AHCT190

KS74AHCT
KS54AHCT
T. =25°C
T. = -40°C to +85°C T.= -55°C to +125°C
Vcc=5.0V
Vcc=5.0V± 10%
Vcc=5.0V± 10%
Typ

Min

fmax

50

30

Propagation Delay,
lOAD to any Q

tpLH
r-----tpHL

18

30

36

18

30

36

Propagation Delay,
A,B,C, 0 to any Q

tpLH
r-----tpHL

13

21

25

13

21

25

Propagation Delay,
ClK to RCO

tpLH
r-----tpHL

12

20

24

12

20

24

Propagation Delay,
ClK to any Q

r--

11

18

22

11

18

22

19

31

37

19

31

37

Maximum Clock Frequency

tpLH

tpHL

Propagation Delay,
ClK to MAXIMIN

tPLH
r-----tpHL

Propagation Delay,
DID to RCO

r--

CL=50pF

Max

Min

Max

25

MHz

tpLH

19

32

38

tpHL

19

32

38

Propagation Delay,
0/0 to MAXIMIN

tpLH
r-----tpHL

15

25

30

15

25

30

Propagation Delay,
CTEN to RCO

r--

tpLH

11

18

22

tpHL

11

18

22

Pulse Width

Setup Time

10

17

20

lOAD low

12

20

25

Data before lOADt

10

17

20

CTEN before ClKt

10

17

20

DIU before ClKt

10

17

20

lOAD Inactive
before ClKt

10

17

20

ClK High or low

tw

tsu

Data after lOADt
Hold Time

CTEN after ClKt

th

DIU after ClKt
Input Capacitance

r--

2

4

5

a
a

0

a

0

0

--

Unit

ns
ns
ns
ns
ns

ns

ns
ns

ns

ns

. CIN

5

pF

CpD

80

pF

Power Dissipation Capacitance *

* CPD determines the no-load dynamic power dissipation: PD=CPD VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

I

c8SAMSUNG
Electronics

216

191

KS54AHCT
KS74AHCT

Synchronous 4-Bit Up/Down
Binary Counters

FEATURES

DESCRIPTION

• Single down/up count control line
• Look-ahead circuitry enhances speed of cascaded
counters
• Fully synchronous in count modes
• Asynchronously presettable with load control
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These are high-speed synchronous, reversible 4-bit binary
counters_ Synchronous counting operation is provided by
having all flip-flops clocked simultaneously so that the outputs change with each other when so instructed by the
steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous
(ripple clock) counters.
The outputs of the four flip-flOps are triggered on a low-tohigh-level transition· of the clock input if the enable input
(CTEN) is low. A high at CTEN inhibits counting. The direction of the count is determined by the level of the down/up
(DiD) input. When DiD is low, the counter counts up and
when O/U is high, it counts down.
These counters feature a fully independent clock circuit.
Changes at the control inputs (CTEN and O/U) that will
modify the operating mode have no affect on the contents
of the counter until clocking occurs. The function of the
counter will be dictated solely by the condition meeting
the stable setup and hold times.
These counters are fully programmable; that is, the outputs may each be preset to either level by placing a low
on the load input and entering the desired data at the data
inputs. The output will change to agree with the data inputs independently of the level of the clock input. This
feature allows the counters to be used as modulo-N dividers
by simply modifying the count length with the preset inputs.

PIN CONFIGURATION
B

Vcc

as

A

OA

ClK

CTEN

Reo

Diu

Two outputs have been made available to perform the
cascading function: ripple clock and maximum/minimum
count. The latter output produces a high-level output pulse
with a duration approximately equal to one complete cycle
of the clock while the count is zero (all outputs low) counting
down or maximum (9 or 15) counting up. The nipple clock
output produces a low-level output pulse under those same
conditions but only while the clock output to the enable
input of the succeeding counter if parallel clocking is used,
or to the clock input if parallel enabling is used. The
maximum/minimum c')unt output can be used to accomplish
look-ahead for high-speed operation .

MAXIMIN

Oc

Il5A5

00

C

GND

D

FUNCTION TABLE

parallel load

-

DIU

CTEN

ClK

L
l

X
X

X
X

X
X

----

count up

H

I

H
--

hold (do nothing)

.

L

--

count/down

~----

LOAD

---

-

OUTPUTS

INPUTS

OPERATING MODE

H

H

j

X

I

t

I
I

t

H

X

-_

Input

-

l
H
t- ......

-t-o
-I-

... -

On
l
H
--

X

count up

X

j count_down

X

no change

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

RCO AND MAXIMIN FUNCTION TABLE
INPUTS

TERMINAL COUNT STATE

DIU

CfEN

ClK

QA

H
L
L
L
H
H

H
H
L
H
H
L

X
X

H
H
H
L
L
L

H =
L =
I =
X =
t =
V =

L =

li
X
X

li

r

i
I

Qs
X
X
X
L
L
L

Qc

Qo

X

H
H
H
L
L
L

X
X
L
L
L

OUTPUTS
MAXIMIN I EO

tl

H
H

1S

I

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

H
H

1S

HIGH voltage level
LOW voltage level
LOW voltage level one setup time prior to the LOW·to-HIGH eLK transition
Don't care
LOW-to-HIGH eLK transitior>
one LOW level pulse
MAXIMIN goes LOW ON A LOW-la-HIGH eLK transition

c8SAMSUNG'
Electronics

217

II

Synchronous 4-Bit Up/Down
Binary Counters

KS54AHCT·191
KS74AHCT.
LOGIC DIAGRAM

(12)

CTEN

~M~

~

DIU
CLK

MAX MIN

(4)

(14)V

~

tg
1
"I
1
'---

""

s

r-EL

r-- D

~~
J

~s~

r__
.
~i1t?
ft) u_
rL~
1
.....,.
--

--

I

~,

I

-p

D

D

~

~

0

C

---'--

~

0

B

(13)

~

LV

~

]

~;-~ Q c

~~
1_
rL~
~

r"""-!'

'f

I

1

I
~

~

~s

-

rB

~i1?7'
[~
rL~
'f

I
I

T

Typical Load, Count, and Inhibit Sequence

~~----------------------------DATA { :
INPUTS

~
CLK

DIU
CTEN

Q c ::,..'-tt-----,
__ I

~

~---r~~-+--~

_ _ ~I~--~

, - -_ _ _ __

_ ...J

MAXIMIN -

-l

RCO : :

1

H ~_____
Lr-------

-113 1415 0
.12
2 2 1 0
15 14 13
COUNT UP~ I-COUNT DOWN-I

Ur-

Sequence:
(1) Load (preset) to binary thirteen
(2) Count up to fourteen, fifteen, zero, one, and two
(3) Inhibit
(4) Count down to one, zero, fifteen, fourteen, and thirteen

LOAD

c8SAMSUNG
Electronics

218

KS5.4AHCT
KS74AHCT

191

Synchronous 4-Bit Up/Down
Binary Counters

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±.35 mA
Continuous Current Through
Vee or GND pins
. . . . . . . . . .. ± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always .be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C
Typ

Ta

KS74AHCT
KS54AHCT
I
+85°C Ta= -55°C to +125°C Unitl

= -40°C to

--

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

Minimum High-Level
Output Voltage

VOH

Vee -0.1
3.84

Vee -0.1
3.7

Maximum Low-Level
Output Voltage
Maximum Input
Current
Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

VOL

hN
Icc

L'llee

VIN=VIH or VIL
10=-20J.lA
10=-4mA
VIN=VIH or VIL
10=20J.lA
10=4mA
10=8mA
VIN = Vee or GND
VIN=Vee or GND
10uT=OJ.lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=OJ.lA

c8SA~SUNG
ElectrOnics

I
I

Guaranteed Limits

Vee Vee -0.1
3.98
4.2

vi
vl
V

0

I
-j

I
I

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

±0.1

±1.0

±1.0

8.0

80.0

160.0

i I-IA I

2.7

2.9

3.0

mA

i

V
I

I

:~i

219

II

KS54AHCT
KS74AHCT

191

Synchronous 4-Bit Up/Down
Binary Counters

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditlonst

(Input tr , tf~2 ns), AHCT191

KS74AHCT
KS54AHCT
T. ::;:25°C
T. = -40°C to +85°C T. = -55°C to + 125°C
Vcc=5.0V
Vcc=S.OV±10%
Vcc=S.OV± 10%
Typ

Min

f max

50

30

Propagation Delay,
lOAD to any Q

~

18

30

36

18

30

36

Propagation Delay,
A,B,C, D to any Q

~

13

21

25

tpHL

13

21

25

Propagation Delay,
ClK to RCO

-

Propagation Delay,
ClK to any Q

I----

Propagation Delay,
ClK to MAXIMIN

~
tpHL

Propagation Delay,
DIO to RCO

tpLH
r----tPHL

Propagation Delay,
DIU to MAXIMIN

tpLH
r----tpHL

Propagation Delay,
CTEN to RCO

tpLH

11

18

22

tpHL

11

18

22

Maximum Clock Frequency

Pulse !Width

Setup Time

tPHL

Min

Max

25

MHz

tPLH

12

20

24

tpHL

12

20

24

tPLH

11

18

22

tpHL

11

18

22

19

31

37

19

31

37

19

32

38

19

32

38

15

25

30

15

25

30

I----

CL=50pF

10

17

20

lOAD low

12

20

25

Data before lOADt

10

17

20

CTEN before ClKt

10

17

20

DIO before ClKt

10

17

20

lOAD Inactive
before ClKt

10

17

20

ClK High or low

tw

tsu

Data after lOADt
Hold Time

Max

CTEN after ClKt

th

DIU after ClKt

2

4

5

a
a

0

0

0

0

Unit

ns
ns
ns
ns
ns

ns

ns
ns

ns

ns

Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

80

pF

* Cpo determines the no-load dynamic power dissipation: PO=CPD VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

220

KS54AHCT
KS74AHCT

192

Synchronous 4-Bit Up/Down
Decade Counters with Dual Clock

FEATURES

DESCRIPTION

• Look-ahead circuit enhances cascaded counters
• Fully synchronous in count modes
• Parallel asynchronous load for modulo-N count
lengths
• Asynchronous clear
• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C

These are high-speed synchronous reversible 4-bit decade
counters. Synchronous operation is provided by having all
flip-flops clocked simultaneously so that the outputs change
coincidently with each other when so instructed by the
steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous
(!ripPie clock) counters.
The outputs of the four flip-flops are triggered by a low-tohigh-level transition of either count (clock) input (Up or
Down). The direction of counting is determined by which
count input is pulsed while the other count input is high.
All four counters are fully programmable; that is, each output may be preset to either level by placing a low on the
load input and entering the desired data at the data inputs.
The output will change to agree with the data inputs independently of the count pulses. This feature allows the
counters to be used as modulo-N dividers by simply modifying the count length with the preset inputs.

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

A clear input has been provided that forces all outputs to
the low level when a high level is applied. The clear function is independent of the count and the load inputs.
These counters were deSigned to be cascaded without the
need for external circuitry. The borrow output (80)
produces a low-level pulse while the count is zero (all outputs low) and the count-down input is low. Similarly, the
carry output (CO) produces a lOW-level pulse while the
count is maximum (9 or 15) and the count-up input is low.
The counters can then be easily cascaded by feeding the
borrow and carry outputs to the count-down and countup inputs, respectively, of the succeeding counter.

PIN CONFIGURATION

B

Vee

OB

A

OA

ClR

00

DOWN

co

UP
Oc

LOAD

Qo

C

GND

0

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE
INPUTS

OPERATING MODE

OUTPUTS

CLR

LOAD

UP

DOWN

A

B

C

D

QA

Qs

Qc

QD

CO

BO

reset (clear)

H
H

X
X

X
X

L
H

X
X

X
X

X
X

X
X

L
L

L
L

L
L

L
L

H
H

L
H

paraiel load

L
L
L
L

L
L
L
L

X
X
L
H

L
H
X
X

L
L
H
H

L
L
X
X

L
L
X
X

L
L
H
H

L
L
A
A

L
L
8
8

L
L
C
C

L
L
D
D

H
H
L
H

L
H
H
H

X

count up

L

H

t

H

X

X

X

count down

L

H

H

t

X

X

X

* CO=Up at terminal count up (HHHH)
* * 80=Down at terminal count down (LLLL)
H = HIGH voltage level

=8 !e!"SUNG

count up

H*

H

count down

H

H* *

=

L
LOW voltage level
X = don't care
t = LOW to HIGH clock transition

221

II

KS54AHCT192
KS74AHCT

Synchronous 4-Bit Up/Down
Decade Counters with Dual Clock

LOGIC DIAGRAM
(12)

Co

(13)

BO

up-------+----~+--+--~~_t
~-+~----------~~

Typical load, count, and Inhibit sequences

..

'{"':~,: ~ ~

INPUTS.

.....

I

1'_

c.J;:L -

D~=
• I
:

~,

---i---~

----,- -,'.:.,----------J

CTE~=~~=-~,t;.!:-----

Sequence;
(1) Load (preset) to BCD seven.
(2) Count up to eight, mine(maximum)
zero, one, and two.
(3) Inhibit
(4) Count down to one, zero
(minimum), nine, egiht,
and seven

NOTE A: Clear overrides load data, and count inputs.
Note B:When count up, count-down input must be high;

when counting down, countup intput must be high.

c8SAMSUNG
Electronics
.

222

KS54AHCT
KS74AHCT

192

Synchronous 4-81t Up/Down
Decade Counters with Dual Clock

Absolute Maximum Ratings·
t Power Dissipation temperatute derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ....... -0.5V to +7V
DC Input Diode Current, 11K
(V, < -0.5V or V, > Vee +0.5V) ..... ±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +O.SV) .... ±20 mA
Continuous Output Current Per Pin. 10
(-O.SV < Vo < Vee +O.SV) ......... ±3S mA
Continuous Current Through
Vee or GND pins ................ ±125 mA
Storage Temperature Range. Tstg ... -6SoC to +1S0°C
Power Dissipation Per Package. Pdt ...... SOO mW

Recommended Operating Conditions
Supply Voltage. Vce . . . . . . . . . . . . . . 4.SV to 5.5V
DC, Input & Output Voltages", VIN, VOUT . . OV to Vee
Operating Temperature
KS74AHCT: -40°C to +8SoC
Range
KSS4AHCT: -SsoC to +125°C
Input Rise & Fall Times, tr , tf ... , . . . . . Max SOO ns

.. Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee-5V± 10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ

KS74AHCT

KS54AHCT

Ta= -40°C to +85°CTa= -55°C to +125°C Unit

Guaranteed Limits

Minimum High-Level
Input Voltage

V,H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V,L

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

V'N=V'H or V,L
10=-20,u\
1e--4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=V,H or VIL
1e-20,u\
1e-4mA
1e=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

V'N=Vee or GND

±0.1

±1.0

±1.0

fAA

Icc

VIN-Vee or GND
IouT-O,u\

8.0

80.0

160.0

fAA

l!.1cc

per input in
V,=2.4V
other Inputs:
at Vee or GND
IouT-OfAA

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

c8SAMSUNG

Vee Vee -0.1
4.2
3.98
0

KS54AHCT
KS74AHCT

192

Synchronous 4-81t Up/Down
Decade. Counters with Dual Clock

AC ELECTRICAL CHARACTERISTICS
Characteristic

Maximum Clock Frequency
Propagation Delay.
UP to CO
: Propagation Delay.
DOWN to any Q

(Input tr • tfli;2 ns). AHCT192

KSS4AHCT
KS74AHCT
T.=2SoC
T... ~400C to +85°C T.= -55°C to +125°C
t
Unit
Symbol Condltlons Vcc=S.OV
Vcc=S.OV± 10%
Vcc=S.OV±10%
Typ

Min

fmax

50

30

~

11

18

22

11

18

22

11

18

22

11

18

22

tPLH

tPHL
tPLH

"---

tPHL

CL=50pF

Max

Min

Max

25

MHz

Propagation Delay.
UP or DOWN to any Q

I-----

11

19

23

tPHL

11

19

23

Propagation Delay.
LOAD to any Q

~

17

29

35

tPHL

17

29

35

Propagation Delay.
CLR to any Q

tPLH

10

17

20

6

10

15

tw

10

17

20

UP or DOWN High
or Low

10

17

20

Data before LOADt

10

17

29

CLR Inactive before
uPt or DOWNt

10

17

20

10

17

20

CLR High
LOAD Lo.w
Pulse Width

Setup Time

LOAD Inactive before
uPt or DOWNt

tsu

UP high before
DOWNt

Hold Time

10

17

17

Down high before uPt

8

15

15

Data after LOADt

0

0

0

0

0

0

3

8

6

UP High after DOWNt

th

DOWN High after uPt

ns
ns
ns
ns
ns

ns

ns

ns

Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

80

pF

* CpD determines the no-load dynamic power dissipation: PO=CPD Vee' fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

224

KS54AHCT
KS74AHCT

193

Synchronous 4-BitUplDown
Binary Counters with Dual Clock

FEATURES

DESCRIPTION

• Look-ahead circuitry enhances cascaded counters
• Fully synchronous in count modes
• Parallel asynchronous load for modulo-N count
lengths
• Asynchronous clear
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.SV
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These are high-speed synchronous reve(sible 4-bit binary
counters. Synchronous operation is provided by having all
flip-flops clocked simultaneously so that the outputs change
cOincidently with each other when so instructed by the
steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous
(Iripple clock) counters.
The outputs of the four flip-flops are triggered by a low-tohigh-level transition of either count (clock) input (Up or
Down). The direction of counting is determined by which
count input is pulsed while the other count input is high.
All four counters are fully programmable; that is, each output may be preset to either level by placing a Iowan the
load input and entering the desired data at the data inputs.
The output wi!1 change to agree with the data inputs independently of the count pulses. This feature allows the
counters to be used as modulo-N dividers by simply modifying the count length with the preset inputs.
A clear input has been provided that forces all outputs to
the low level when a high level is applied. The clear function is independent of the count and the load inputs.

PIN CONFIGURATION
B

These counters were designed to be cascaded without the
need for external circuitry. The borrow output (80)
produces a low-level pulse while the count is zero (all outputs low) and the count-dowh input is low. Similarly, the
carry output (CO) produces a low-level pulse while the
count is maximum (9 or 15) and the count-up input is low.
The counters can then be easily cascaded by feeding the'
borrow and carry outputs to the count-down and countup inputs, respectively, of the succeeding counter.

Vee

OB

A

OA

CLR

DOWN

eo

UP

CO

Oe

l.OAD
c

00

D

GND

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground,

FUNCTION TABLE

OUTPUTS

INPUTS

OPERATING MODE

. _ - _ ..

CLR

LOAD

UP

DOWN

A

8

C

D

QA

Qs

Qc

QD

CO

80

reset (clear)

H
H

X
X

X
X

L
H

X
X

X
X

X
X

X
X

L
L

L
L

L
L

L
L

H
H

L
H

parailel load

L
L
L.
L

L
L
L
L

X
X
L
H

L
H
X
X

L
L
H
H

L
L
H
H

L
L
H
H

L
L
H
H

L
L
H
H

L
L
H

L
L
H
H

L
L
H
H

H
H
L
H

L
H
H
H

X

count up

L

H

t

H

X

X

X

count down

L

H

H

t

X

X

X

H= HIGH voltage level
L = LOW voltage lovel
X = don't care

H

-

count up

H*

H

couAt down

H

H* *

t=

LOW-to-HIGH clock transition
* CO = UP at terminal count up (HHHH)
* *. 80 = DOWN at terminal count down (LLLL)

=8SAMSUNG
Electronics

225

II

193.

KS54AHCT
KS74AHCT

Synchronous 4-81t Up/Down
Binary Counters with Dual Clock

LOGIC DIAGRAM
(12)

(13)

CLR (~
UP

DOWN

~

~)

(5)
(4)

LU

)1!.!lct>

LOAD

A

(151

~

B

FLJ
FU

,

~

~s

-

O.

~ Oc

..""'f

J

r--

FLJ

V_

Q

~ ~ rL~
~I>

R.J

0(9)

1--

'"'I

FU

~

....-

~ frU7

1'-'

FU

(10)

.

,-'"

(
C

rrEL·O.

~P

r: ~

~

~

-

-1J-

.A-

(1)

so

~ ~S~
~.

= -

~ cD

A
~

00

rL~

Typical Clear, Load, and Count Sequences
CUI

~--~~ ~--------------~--------------

.-+4-4-0-------------------

"{ ~
.-+4-4-0------------------.-++--+-i-------------------

DATA

D:C

COUNT UP

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

+-1-++---.

coum __~__~_4------------~
DOWN

ro--~-4~-+--~

10 1 ~31
~~

I

14

r---

15

r-----+-~----------_+-

0

1

2

I I

COUNT UP----1

r1

I

0
15
14 13
COUNT DOWN - ,

Sequence:
(1) Clear outputs to zero_
(2) Load (preset) to binary thirteen_
(3) Count up to fourteen, fifteen, carry, zero,
one and two.
(4) Count down to one, zero, borrow, fifteen,
fourteen, and thirteen.
Note A: Clear overrides load data, and count
inputs.
Note B: When counting up, count-down input
must be high; when counting down, count1
up input must be high_

CLEAR PRESET

c8SAMSUNG
. Electronics

226

KS54AHCT
KS74AHCT

193

Synchronous4-Bit Up/Down
Binary Counters with Dual Clock

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, ItK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vec or GND pins
± 125 mA
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to + 125°C
Input Rise & Fall Times, tr , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vec=5V±,10% Unless Otherwise Specified)

'Ta =25°C
Typ

KS74AHCT

KS54AHCT
+12~ Unit

Ta = -40°C to +85°C Ta = -55°C to
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0
V
---_._- -

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

Vee -0.1
3.7

V

VIN=VIH or VIL
10=-20J-lA
10=-4mA

Vee Vee -0.1
4.2
3.98

Vee -0.1
3.84
.'-~'

Maximum Low-Level
Output Voltage
Maximum Input
Current

VOL

liN

VIN=VIH or VIL
10 = 20J-lA
10=4mA
10=8mA
VIN=Vee or GND

0

0.1
0.26
0.39

0.1
0.33
0.5

±0.1

±1.0
--~---

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

~Iee

VIN=Vee or GND
10UT=0J-lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=01.{A

=8SAMSUNG
Electronics

8.0

80.0

-

- - - - - - - - - - - t----

0.1
0.4

V
- - I~

±1.0

J-lA

r--.------. - -

- !-----

160.0

J-lA

--

2.7

2.9

3.0

mA

227

II

KS54AHCT
KS74AHCT

193

Synchronous 4-Bit Up/Down
Binary Counters with Dual Clock

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr ,

tf~2

T.=25°C
T.
Symbol Conditions t Vcc=5.0V

ns), AHCT193
KS74AHCT

=-40°C to +85°C
Vcc=5.0V:!:10%

Min

Max

Typ

Min

f max

50

30

Propagation Delay,
UP to CO

~

11

18

22

11

18

22

Propagation Delay,
DOWN to any Q

r--

Maximum Clock Frequency

,-------

Propagation Delay,
UP or DOWN to any Q
f--- ..

tpHL

Max

KS54AHCT
Ta= -55°C to +125°C
Unit
Vcc=5.0V:!: 10%

25

MHz

11

18

22

11

18

22

tpLH

11

19

23

tpHL

11

19

23

tpLH

tpHL
t---

CL=50pF

Propagation Delay,
LOAD to any Q

~

17

29

35

tpHL

17

29

35

Propagation Delay,
CLR to any Q

tpLH

10

17

20

6

10

15

tw

10

17

20

UP or DOWN High
or Low

10

17

20

Data before LOADt

10

17

29

CLR Inactive before
uPt or DOWNt

10

17

20

10

17

20

10

17

17

Down high before uPt

8

15

15

Data after LOADt

0

0

0

0

0

3

8

0
6

CLR High
LOAD Low
Pulse Width

Setup Time

LOAD Inactive before
uPt or DOWNt

tsu

UP high before
DOWNt

Hold Time

UP High after DOWNt

th

DOWN High after uPt
Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

80

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vce 2
t For AC switching test circuits and timing waveforms see section 2.

·c8SAMSUNG
Electronics

ns
ns
ns
ns
ns

ns

ns

ns
pF
pF

fin.

228

KS54AHCT
KS74AHCT

194

4-Bit Bidirectional
Universal Shift Registers

FEATURES

DESCRIPTION

•
•
•
•
•
•

These bidirectional shift registers feature parallel outputs,
right-shift and left-shift serial inputs, operating-mode-control
inputs, and a direct overriding clear line. The register has
four distinct modes of operation:

•
•
•
. •
•

•

Parallel-ta-Serial, Serial-ta-Parallel Conversions
Left or Right Shifts
Parallel Synchronous Loading
Direct Overriding Clear
Temporary Data Latching Capability
Function, pin-out, speed and drive compatibility with
54174ALS logic family
Low power consumption characteristic of CMOS
High-Drive-Current outputs:
IOL =8 rnA @ VOL =0.5V
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: ~55°C to +125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

-

Inhibit clock (temporary data latch/do nothing)
Shift-right (in the direction QA toward QD)
Shift-left (in the direction QD toward QA)
Parallel (broadside) load

Synchronous parallel loading is accomplished by applying
the four bits of data and taking both mode control inputs,
SO and S1, high. The data is loaded into the associated
flip-flops and appear at the outputs after the positive transition of the clock input. During loading, serial data flow
is inhibited.
Shift-right is accomplished synchronously with the rising
edge of the clock pulse when SO is high and S1 is low.
Serial data for this mode is entered at the shift-right data
input. When SO is low and S1 is high, data shifts left synchronously and new data is entered at the shift-left serial
inputs. Clocking of the flip-flop is inhibited when both mode
control inputs are low.

PIN CONFIGURATION
CLR
SR SER
A
B
c
D
SL SER
GND

Vee

aA
as
ae
aD
ClK
S1
SO

FUNCTION TABLE
.

INPUTS

CtR
L
H
H
H
H
H
H
H

MODE

CLK

S1 SO
X
X
H
L
L
H
H
L

X
X
H
H
H
L
L
L

X
L
t

t
t
t
t
X

OUTPUTS
SERIAL

PARALLEL

LEFT RIGHT

A B C D

X
X
X
X
X
H
L
X

X
X
X
H
L
X
X
X

X
X
a
X
X
X
X
X

X
X
b
X
X
X
X
X

X
X
c
X
X
X
X
X

X
X
d
X
X
X
X
X

QA

Qs

Qc

QD

L
QAO
a
H
L
QBn
QBn
QAO

L
QBO
b
QAn
QAn
QCn
QCn
QBO

L
Qco
c
QBn
QBn
QDN
QDn
Qco

L
QDO
d
QCn
QCn
H
L
QDO

H=high level (steady state)
L=low level (steady state)
X=irrelevant (any input, including transitions)
t=transition from low to high level
a,b,c,d=the level of steady-state input at
inputs A,S,C, or D, respectively.
QAO, QBO, Qco, QDo=the level of QA,
Qs, Qc, or QD, respectively, before
the indicated steady-state input conditions were established.
QAn, QBn, QCn, QDn=the level of QA,
Qs, Qc, respectively, before the mostrecent t transition of the clock.

229

II

4-Bit Bidirectional
Universal Shift Registers
LOGIC DIAGRAM
PARAllEL INPUTS

CON~

{51
so ..l!!L-D.......>---+-++-*----=J

INPUT

CLK (II)

CLR~I~I)~~-------4------"1~~---~---~.._---~--_r.TIO---~

ac

a.

(12)

aD

PARALLEL OU1PUTS

typical clear, load, right-shift, inhibit, and clear sequences

MODE {SO::..!
CONTROL
INPUTS

:
I

51 :::r-TlL...;.._______---1

ClEAR--:U !
I
I

SERIAL \
DATA
INPUTS

R

-';,-r-,-..;.----------:---r.....

,

'

I

L,

I

•

A~~--------+--7------~------~.' ,
PARALLEL
DATA
INPUTS

C--+FT1~
I
I
I

L

____________

~~

____.______ ________ __
~

~

'
I
I

OUTPUTS

---11---- INHIBIT----I
CLEAR

c8SAMSUNG
Electronics

230

KS54AHCT
KS74AHCT

194

4-Bit Bidirectional
Universal Shift Registers

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mWrC from 65°C to 85°C

Supply Voltage Range Vee.
. . . -0.5V to + 7V
DC Input Diode Current. 11K
(VI < -0.5V or VI > Vee +0.5V) ..... ±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current .Per Pin. 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
±125 mA
Storage Temperature Range. T8 tg . . . -65°C to +150°C
Power Dissipation Per Package. Pdt
500 mW

Recommended Operating Conditions
Supply Voltage. Vee
4.5V to 5.5V
DC Input & Output Voltages*. \tIN. VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times. tr • tf ...

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee""5V± 10% Unless Otherwise Specified)
KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Ta =25°C
Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20J.lA
10= -4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20J.lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

J.lA

80.0

160.0

J.lA

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

l!.lee

VIN=Vec or GND
10UT==OJ.lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lOUT = OJJA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

8.0

2.7

I

231

I

KS54AHCT
KS74AHCT

194

4-Bit Bidirectional
Universal Shift Registers

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Input t r , tf~2 nS),·AHCT194

T. =25°C
Conditions 1 Vcc=5.0V

KS74AHCT
KS54AHCT
T.=-400Cto +85°C T. -55°C to +125°C
Vcc=5.0V±10%
Vcc=5.0V± 10%

=

Typ

Min

Maximum Clock Frequency

f max

60

35

Propagation Delay,
ClK to QH

tPLH

r---

10

17

20

10

17

20

Propagation Delay,
ClR to QH

tPHL

11

19

22

Pulse Width

ICLR lOW

IClK High Or lOW

Setup Time,
Any Input before CLKt
Hold Time,
Data after ClKt

tpHL

CL=50pF

Max

Min

17

20

10

17

20

ts

10

17

20

ts

-:-3

0

0

Input Capacitance

CIN

5

Power Dissipation Capacitance *

CPO

80

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2

Max

MHz

30

10

tw

Unit

ns
ns
ns
ns
ns
pF
pF

fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

232

KS54AHCT
KS74AHCT

195

4-Bit Bidirectional
Universal Shift Registers

FEATURES

DESCRIPTION

• Parallel-to-Serial, Serial-ta-Parallel Conversions
• Parallel Synchronous loading
• J and K Inputs to First Stage
• Right-shift Only with Complementary Outputs on last
Stage
• Direct Overriding Clear
• Function, pin-out, speed and drive compatibility with
54/74AlS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 4-bit rigisters feature 'parallel inputs, parallel outputs,
J-K serial inputs, shift/load control input, and a direct overriding clear. The registers have two modes of operation:
Parallel (broadside) load
Shift (in the direction AA toward QD)
Parallel loading is accomplished by applying the four bits
of data and taking the shift/load control input low. The data
are lOaded into the associated flip-flops and appear at the
outputs after the positive transition of the clock input. During
loading serial data flow is inhibited.
Shifting is accomplished synchronously when the shift/load
control input is high. Serial data for this mode is entered
at the J-K inputs. These inputs permit the first stage to perform as a J-K, D-, or T-type flip-flop as shown in the function table.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage leyels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

PIN CONFIGURATION
Vee
OA

K

Os

A

Oe

B
C

00
OD

D

ClK

GND

SH/[5

FUNCTION TABLE
INPUTS
CLR

L
H
H
H
H
H
H

SH/LD
X
L
H
H.
H
H
H

ClK
X

t
L

t
t
t

t

c8.sAMSUNG
Electronics

OUTPOUTS
SERIAL

PARAllEL

J

K

A B C D

X
X
X
L
L
H
H

X
X
X
H
L
H
L

X
a
X
X
X
X
X

X
b
X
X
X
X
X

X
c
X
X
X
X
X

X
d
X
X
X
X
X

QA

QB

Qc

QD

L
a
QAO
QAO
L
H
OAn

L
b
QBO
QAO
QAn
QAn
QAn

L
c
Qco
QBn
QBn
QBn
QBn

L
d
QDO
Qcn
Qcn
QCn
Ocn

QD
H

d
aDO
OCn
OCn
Ocn
QCn

H=high level (steady state)
L=low level (steady state)
X=irrelevant (any input, including tranSitions)
t=transition from low to high level
a,b,c,d=the level of steady-state input at
A,B,C, or D, respectively.
QAO, QBO, Qeo, QDo=the level of QA,
QB, ac, or QD, respectively, before
the indicated steady-state input conditions were established.
QAn, QBn, QCn=the level of QA, QB or Qc,
respectively, before the mostrecent
transition of the clock.

233

II

19'5

KS54AHCT
KS74AHCT

4-Bit Bidirectional'
Universal Shift Registers

LOGIC DIAGRAMS
SERIAL INPUT

~
J
(2)

K
(3)

PARALLEL INPUTS

~----------------~~--------------~
o
C
B
A

SH/ili ~(9~)~~-+~~~+-________~tCONTROL

(7)

(11)

(5)

(4)

________~~__________~

CLK (10)

CLRJ(~1)----~~----~~-+--~~~~--+---~---r+--t--~r---rt--t---~

(11)

00
PARALLEL OUTPUTS

typical clear, shift, and load sequences

CLK
I

I

-......:.----'~L----------....;..--i---------Ii"'"IL__________....!.._ _: -_ _ _ _ _ _ _ __

J

SERIAL {
INPUTS

K

SH/Lo--~----~I-------------__,~~~----------~----PARALLEL

IN~~~~

OUTPUTS

i

A__. . . :._____~___________________~L......:.------------------L

B

:

FHT'L......:..------------------

C
D

L

I

QA:::l

1
Q

s

:::::1,j,--------.;....---I

________ ______
________ ________ __

Qc:::~~:

~

Qo:::~~

~

I

I
CLEAR

c8SAMSUNG
Electronics

~

~

~

I

~---SERIAL SHIFT -----I
LOAD

r----SERIAL SHIFT - -

234

KS54AHCT
KS74AHCT

195

4-Bit Bidirectional
Universal Shift Registers

Absolute Maximum Ratings·
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI> Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins. . . . . . . .
± 125 mA
Storage Temperature Range, TSlg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, Your .. OV to Vee
Operating Temperature
Range
KS74AHCT: . -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level ,(either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/AA
lo=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2O/AA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/AA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/AA

2.7

2.9

3.0

mA

[Additional Worst
Case Supply
,current

.6.lee

VIN=Vee or GND
10ur=OiJA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour=OiJA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

235

I

KS54AHCT
KS74AHCT

195

4-Bit Bidirectional
Universal Shift Registers

AC ELECTRICAL CHARACTERISTICS
.Characteristic

Symbol

Conditions t

(Input tr , tf~2 ns), AHCT195

T. =25°C
Vee=5.0V

KS74AHCT
T.= -40°C to +85°C
Vee = 5.0V:t 10%

Typ

Min

Maximum Clock Frequency

fmax

60

35

Propagation Delay,
ClK to QH

tpLH

17

I---

10

20

10

17

20

Propagation Delay,
ClR to QH

tPHL

11

19

22

Pulse Width
Setup Time
before ClKt

Hold Time
after ClKt

tpHL

ClR Low
ClK High or Low

tw

SH/LD High
Serial or Parallel
Data

tsu

CL=50pF

Max

KS54AHCT
T.= -55°C to +125°C
Vce=5.0V:t 10%
Min

17

20

10

17

20

10

17

20

10

17

20

ClR inactive

10

17

20

SH/lD High

-3

0

0

Serial or Parallel
Data

-3

0

0

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

5

Max

30

10

Unit

MHz
ns
ns
ns
ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

236

KS54AHCT
KS74AHCT

210

Octal Buffers and Line Drivers
with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =24 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
. KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages·
(Available Tape & Reel), standard DIPs.

These high·speed octal buffers and line drivers are design·
ed specificaly to improve both the performance and density of 3·state memory address drivers, clock drivers, and
bus-oriented receivers and transmitters.
The deSigner has the choice of combinations of inverting
non·inverting outputs and symmetrical complementary input control (both active·low, or one active-low, the other
active·high).
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

I

LOGIC DIAGRAM

1<3

Vee

1A1

2G

2'(4

1'(1

1A2

2A4

2\(3

1Y2

(14) 1'(3

1A3

2A3

(12)

iV2

1'(3

1A4

2A2

2\(1

1'(4

GND

2A1

(18)
(16)

(9)
(7)

2A2
(5)

2A3

FUNCTION TABLE
Input
G
L
L

H

A
L

H
X

(3)

2A4

1Y1
_
1Y2

_
1Y4

2Y1
2V2
2V3
2'(4

Output
y

H
L

Z

c8SAMSUNG
Electronics

237

KS54AHCT
KS74AHCT

210

Octal Buffers and Line Drivers
with 3-State Outputs'

Absolute Maximum Ratings*
Supply Voltage Range Vee, ...... .-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) . .
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±70 mA
Continuous Current Through
Vec or GND pins ................ ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

'!'

Recommended Operating Conditions
Supply Voltage, Vee .............. ' 4;5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500ns

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS54AHCT
KS74AJ'lCT
Ta =-40°Cto +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits'

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20J.lA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20J.lA
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

J.lA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VOUT=VCC or GND

±0.5

±5.0

±10.0

/AA

Maximum Quiescent
Supply Current

Icc

VIN=VCC or GND
10uT=OJ.lA

8.0

80.0

160.0

J.lA

=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

238

KS54AHCT
KS74AHCT

210

Octal Buffers and Line Drivers
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Condltlons t

Symbol

(Input tr , tf~2 ns), AHCT210
KS74AHCT
KS54AHCT
T.=25°C
T.= -40°C to +85°C T.=-55°Cto +125°C
Vee = 5.0V
Vee=5.0V±10%
Vee=5.0V± 10%
Typ

proPfation Delay,
A to

Output En~ble Time,
Enable to Y

Input Capacitance
Output Capacitance
Power Dissipation
Capacitance •

Max

Min

CL=50pF
CL=150pF

6
9

10
15

12
18

tpHL

CL=50pF
CL=150pF

7

10
16

12
19

20
25

24
30
24
30

tPZH
I----

RL=1kO

tpHZ

t-----

tpLZ

CL=50pF
CL=150pF
CL=50pF
CL=150pF

RL=1kO
CL=50pF

11
12
15
12
15
13

20
25
18

13

18

Unit

Max

tpLH

tpZL
Output Disable Time,
Enable to Y

Min

22
22

ns

ns

ns

5

pF

COUT

Output Disabled

10

pF

Cpo·

Output Disabled
Output Enabled

5
30

pF

CIN

• Cpo determines the no-load dynamic power dissipation: Po=Cpo

II

VCC 1 fin.

t For AC switching test circuits and timing waveforms see section 2 .

.c8SAMSUNG
Electronics

239

KS54AHCT238
KS74AHCT

3-Line 8-Line 'Dec~derSIDemultiplexers

FEATURES

DESCRIPTION

• Designed specifically for high-speed memory
decoders and data transmission systems.
• Incorporates 2 enable Inputs to simplify cascading
andlor data reception

These devices are designed to be used in highperformance memory-decoding or data-routing applications
requiring very short propagation delay times. In highperformance memory systems, these decoders can be
used with high-speed memorie!> utilizing a fast enable
circuit, the delay times of these decoders and the enable
time of the memory are usually less than the typical access
time of the memory. This means that the effective system
delay introduced by the decoder is negligible.

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & ~eel), standard DIPs.

This conditions at the binary select inputs and the three
enable inputs select one of eight input lines. Two activelow and one active-high enable inputs reduce the need for
external gates or inverters when expanding.
A 24-line decoder can be implemented without external
in'verters and a 31 -line decoder requires only one inverter.
An enable input can be used as a data Input for
demultiplexing applications.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

PIN CONFIGURATION

FUNCTION TABLE

A

Vee

B
C

yo

G2A

Y2

G2B

Y3

Gl

Y4

Y7

Y5

GND

Y6

c8'SAMSUNG
Electronics

Yl

Enable
Inputs
G1

G2*

X
L

H

H
H
H
H

X
L
L

Select
Inputs

Outputs

C B A

YO Y1 Y2 Y3 Y4 Y5 Y6 Y7

X
X
L
L

X
X
L
L

L

L H

L

H

L

H
H
H

L

H L
H L
H L

L
L

H H

H H

X
X
L
H
L
L
L
H
L
H

L
L

L
L
L

L
L
H
L
L H L
L L H
L L L
L L L
L L L
L L L
L L L

L

L
L
L
L
H
L
L
L
L

L
L
L
L
L
L

L
L
L
L
L
L
H L
L H
L L
L L

L
L
L
L

L
L
L
L

L

L

L
L
L

L
L
L
H L

L

H

240

KS54AHCT
KS74AHCT

238

3-Line 8-Line Decoders/Demultiplexers

LOGIC DIAGRAM

II
Absolute Maximum Ratings*
Supply Voltage Range Vee, . . . . .
-0.5V to +7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±35 mA
Continuous Current Through
Vee or GND pins
± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability .

..c8.SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating. Conditions
Supply Voltage, Vee . . .. ........ 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, tt, tf ...
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

241

K$54~HC.J.

KS74AHCT

'238.

3-LineS-Line DecoderslDemultiplexlJrs

DC ELECTRICAL CHARACTERISTICS

(Vcc=5V±10% ,Unless Otherwise Specified)

.'

Characteristic

Symbol Test Conditions

TA=25°C

KS54AHCT
KS74AHCT
TA= .,..40°C to +85°C TA= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VII.j

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Lc;wel
Output Voltage

VOH

VIN=VIH or VIL
lo=- 2OIlA
lo=-4mA

Vcc -0.1
3.84

Vcc-0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=201lA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

O. i
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

IlA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

IlA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

lllcc

Vec Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
IOUT=OIlA
per Ihput pin
VI=2.4V
other Inputs:
at Vcc or GND
IOUT=OIlA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input tr , tf~2 ns), AHCT238

KS74AHCT
KS54AHCT
TA=25°C
TA= -40°C to +85°C TA= -55°C to +125°C
Vcc=5.0V
Vcc=5.0V±10%
Vcc=S.OV± 10%
Typ

Min

Max

Min

tPLH

12

20

24

tpHL

12

20

24

Propagation Delay,
A, B, Cor Y

-

Propagation Delay,
G1 to any Y

-

10 .

17

20

tpHL

10

17

20

Propagation Delay,
G2A or G2B to any Y

~

10

17

20

tPHL

10

17

20

tPLH

CL=50pF

Unit

Max
ns
ns
ns

Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

50

pF

* Cpo determines the no-load dy'namic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

242

KS54AHCT
KS74AHCT

239

Dual 1-0'-4 Decoderll)emulfiplexers

FEATURES

DESCRIPTION

• Designed specifically for high-speed memory
decoders and data transmission systems
• Incorporates 2 enable inputs to simplify cascading
and/or data reception
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices are designed to be used in highperformance memory-decoding or data-routing applications
requiring very short propagation delay times in highperformance memory systems, these decoders can be
used to minimize the effects of system decoding. When
used with high-speed memories utilizing a fast-enable
circuit, the delay times of these decoders and the enable
time of the memory are usually less than the typical access
time of the memory.
This means that the effective system delay introduced by
the decoder is negligible.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
A" inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

FUNCTION TABLE

PIN CONFIGURATION

Vee

1A

20

Enable

G

18

2A

1YO

28

1Y1

2YO

1Y2

2Y1

1Y3

2Y2

GND

2Y3

c8SAMSUNG
Electronics

Outputs

Inputs

1G

H
L
L
L
L

Select
B
A
X

X

L
L
H
H

L
H
L
H

--

YO

Y1

Y2

Y3

L
H
L
L
L

L
L
H
L
L

L
L
L
H
L

L
L
L
L
H

I

243

I

KS54AHCT
KS74AHCT

239

Dual 1-of-4 Decoder/Demultiplexers

LOGIC DIAGRAM

lYO
ENABLE

1<3

lYl
lY2

SELECT
INPUTS

lA
{

ENABLE

lB

(2)
(3)

lY3

DATA
OUTPUTS

_(15)

2G'

(14)

SELECT
INPUTS

2A
{

2B

(13)

Absolute Maximum Ratings*
Supply Voltage Range Vcc, . . .
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per' Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins . . . . . . . . . . . . . . .. ± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
• .Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc .............. 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf ......... Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

244

KS54AHCT
KS74AHCT

239

Dual 1-01-4 Decoder/Demultiplexers

DC ELECTRICAL CfiARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)

Ta=25°C

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= .-55°C to +125°C Unit

Typ

Guaranteed limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
'lo=-20/AA
lo=-4mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2O/AA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

IrN

VIN=VCC or GND

±0.1

±1.0

±1.0

/AA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/AA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.6.lcc

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
louT=O/AA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
louT=O/AA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr • tf~2 ns). AHCT239

T. =25°C
Vee=5.0V

KS74AHCT
T. = -40°C to +85°C
Vee = 5.0V::!: 10%

Typ

Propagation Delay.
~or B to any Y
Propagation Delay.
G to any Y

Min

Max

KS54AHCT
T. = -55°C to +125°C
Vee=5.0V::!: 10%
Min

Max

tpLH

12

20

24

tpHL

12

20

24

CL =50pF

tpLH

10

17

20

tpHL

10

17

20

I----"

Unit

ns
ns

Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

50

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2

fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

~45

II

KS54~HCT'~B40124112440~tal Bufferssnd Lin,S Drivers
KS74AHCt, ' . : ; y , " .
.
with 3-State Outputs
"
FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with drive current
(loL 24 mA @ VOL 0.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These high·speed octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and
bus-oriented receivers and transmitters.

=

=

The designer has the choice of combinations of inverting/
non-inverting outputs and symmetrical complementary input control (both active-low, or one active-low, the other
active-high) .
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected frOAl damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAMS

PIN CONFIGURATION
'240

1G

,ii

Vee

lAl

2G/2G *

2Y4

1Y1

lA2

2A4

2Y3

1Y2

lA3

2A3

2Y2

1Y3

lA4

GND

1181

141

1181

'A2
181

181

_
2G

2A1

2A'

*2<3 for '240 and '244
2G for '241

2A2

2A3

2A4

,v,

'V2

'A2

1141 'V3

'A3

2A2
lY4

2Y1

_
,G

121

'244

'241

Itl

1'21

1'31

111

1'51

151

1111

. 131

1'81

141

1181

181

1'41

'V3

,ii

1'1

'A'

121

1121

2V'

1181

181

2A2

1'31

111

1151

151

1111

131

2V4

141

1'81

181

('4)

181

1121

,v3

_ 1'81
2G

2A' 1"1

2A3

1181

'A3

'V4

2G
181

121

181

1'81

1111

1'1

111;

181

1'31
2A2-'--

111

2V2

2V3

2~

tlSl

151

2V4

2A4

2Vl

2Y2

2Y3

1111

FUNCTION TABLE
'241, '244
Output

Input

'240
Output

G

G

A

Y

Y

H
H
L

L
L

L

L

H

H

H

X

H
Z

Z

cg !il!.'lSUNG

L

246

KS54AHCT 240/241/244octal Buffers and Line Drivers
KS74AHCT·
with 3-State Outputs
Absolute Maximum Ratings*
Supply Voltage Range Vcc. . . . . . . . -0.5V to + 7V
DC Input Diode Current. hK
(VI < -0.5V or VI > Vcc +O.5V) .... , ±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vcc +0.5V) ... , ±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vcc +0.5V) ......... ±70 mA
Continuous Current Through
Vce or GND pins .............. '" ±250 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vce .............. 4.5V to 5.5V
DC Input & Output Voltages*. VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These. are stress ratings only and functional operation
of the device ator beyond them is not implied. Long exposure to these conditions mB:Y affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta == -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0:8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20/-IA
lo=-6mA

Vee -0.1
3.84

Vec '-0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2O/-lA
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
. 0.5

0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/-IA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

/-I A

Maximum Quiescent
Supply Current

Icc

VIN=Veeor GND
10uT=O/-lA

8.0

80.0

160.0

/-IA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

0.1

-

247

I

KS54At:'CT~2~OI24112440Cfa/Bu"ersand Lin-. Drivers

KS74AHCT ,,';

,

with 3-8tate Outputs

AC ELECTRICAL CHARACTERISTICS
C~.r.cterlstlc

Condltlons t

Symbol

(Input t r • t~2 ns). AHCT240. AHCT241 • AHCT244
T. =2SOC
T.
Vce=S.ov
Typ

Propagation Delay.
A to Y

Output Enable Time.
Enable to Y

tpLH

CL=50pF
CL-150pF

6

tpHL

CL=50pF
CL=150pF

6

Input Capacitance
Output Capacitance
Power Dissipation
Capacitance *

Min

9

Max

KSS4AHCT
T. = - Ssoc to + 12SOC
Unit
Vec=S.OV:!: 10%
Min

Max

10
15

12
18
12
18

ns

9

10
15

CL=50pF
CL=150pF

12
15

20
25

24
30

CL-50pF
CL=150pF

12
15

20
25

24
30

RL=l kO
CL=50pF

13

18

22

13

18

22

5

pF

COUT

Output Disabled

10

pF

Cpo

Output Disabled
Output Enabled

5
30

tPZH
f---

RL=lkO

tPZL
Output Disable Time.
Enable to Y

KS74AHCT

=- 40°C to + 8SOC
Vee =S.OV:!: 10%

~
tpu
CIN

'c8SAMSUNG
Electronics

ns

pF

* Cpo determines the no-load dynamic power dissipation: Po-Cpo VCC
t For AC switching test circuits and timing waveforms see section

ns

2

fin.

2.

248

KS54AHCT
KS74AHCT

2421243
I~

Quad Bus,,;'Transceivers
with 3-State Outputs

FEATURES

DESCRIPTION

• 2-Way Asynchronous Communication Between Data
Buses
• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL =24 mA @ VOL =O.5V) for direct bus interface
• Inputs and outputs interface directfy with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.SV
• Characterized . for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These four-data line transceivers are designed for
asynchronous two-way communications between data
buses.
These devices provide speeds and drive capability
equivalent k> their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

FUNCTION TABLE
PIN CONFIGURATION
INPUTS
Vee
G8A

A1

NC

GAB

'242

GBA

'243

L

L

A to B

A to B

H

H

B to A

B to A

A2

81

A3

82

H

L

Isolation

Isolation

83

L

H

Isolation

Isolation

84

LOGIC DIAGRAMS
'242

'243

A1.;...;...------i

c8SAMSUNG
Electronics

II

KS54A~CI~'2421243

KS7 4AI;"ICT,:;: ,~f.q

....

Quad 'BusTransceivers
''Wifh3-State Outputs'

..•, ,

Absolute Maximum Ratings*
Supply Voltage; Range Vee. ' , , , , , , ~0.5V to + 7V
DC Input Diode, Current. 11K
M < -0.5V or VI > Vee +0.5V) , .... ±20 mA
DC Output Diode Current. 10K
(Vo <·-O.SV or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vee +0.5V) ......... ±70 mA
Continuous Current Through
Vee or GND pins .............. " ±250 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plast,c ~ackage (N): -12rnW/oC from 65,oC to 85,oC

Recommended Operating Conditions
Supply Voltage; Vee . . . . . . .. . . . . .. 4,5V to 5:5V
DC Input & Output Voltages·. VIN. VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times. tr.tl ......... Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unu~d inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 1..0% Unless Otherwise Specified)

Ta =25°C
Typ

KS14AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.t.lee

VIN=Vee or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

250

KS54AHCT
. KS74AHCT

24. 2'243
,~

AC ELECTRICAL CHARACTERISTICS
Chllr.ctwlstlc

CondHlon,t

Symbol

Quad Bus. Transceivers
with 3-State Outputs
(Input tr, t,<2 ns), AHCT242, AHCT243
KS74AHCT
KS54AHCT
T. -2S·C
T•• -40·C to +,soc T.;"-5S0Cto +12SOC
Unit
Ycc-s.o y
Ycc=5.0Y:t: 10%
Ycc- S•OY :t:10%
Typ

Propagation Delay,
AtoBorBtoA

Output Enable Time
GAB to B, GBA to A

tPLH

CL=50pF
CL=150pF

tPHL

CL=50pF
CL=150pF

Input Capacitance
Output Capacitance
Power Dissipation
Capacitance * (per stage)

10

7
10

CL=50pF
CL=150pF

12
15

CL=50pF
CL =150pF

12
15

Mu

Min

Mu

11
16

15
21

11
16

15
21
25
21

25

ns

RL=1kO
CL=50pF

12

20
25
20
25
20

12

20

5

pF

COUT

Output Disabled

10

pF

Cpo

Output Enabled
Output Disabled

30
5

pF

tPZH
r----- RL=1kO
tPZL

Output Disable Time,
GAB to B, GBA to A

Min

7

~
tpLZ
CIN

* Cpo determines the no-load dynamiC power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics
.

ns

25
21
25

ns

II

fin.

251

. KS54AHCT
KS74AHCT

2.4.5

Octal Bus Transceivers with
3-StateOutputs .

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/7 4A~S logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(loL 24 mA @ VOL O.5V) for direct bus interface
.' Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These high-speed octal bus transceivers are designed
for synchronous two-way communication between data
buses. The control function implementation minimizes
external timing requirements.

=

=

The devices allow data transmission from the A bus to
the B bus or from the B bus to the A bus depending
upon the logic level at the direction control (DIR) input.
The enable input (G) can be used to disable the device
so that the buses are effectively isolated.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION

OIR

Vee

A1

G

A2

B1

A3

B2

A4

B3

A5

B4

A6

B5

A7

B6

A8

B7

GNO

B8

(19)

G

(1S)
61

(17)

62

(16)
B3

(15)
64

FUNCTION TABLE

(14)
65

(13)

Inputs

66

Operation

G

DIR

L

L

Bus B Data to Bus A

L

H

Bus A Data to Bus B

H

X

Isolation

A7
(12)
B7
AS
(11)
6S

c8SAMSUNG
Electronics

252

KS54AHCT
KS74AHCT

245

Octal Bus Transceivers with
3-State Outputs

Absolute Maximum Ratings*
Supply Voltage Range Vee, ..
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins. . . . . . . . .
±250 mA
Storage Temperature Range, Tstg . . . - 65 ° C to + 150 ° C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vce
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, t r , tf
... Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C
Typ

KS54AHCT
KS74AHCT
Ta = -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20J.lA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20J.lA
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

J.lA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

J.lA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

J.lA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

ll.lee

VIN=Vee or GND
10uT=OJ.lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=OJ.lA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

253

I

Octa/BuB Transceivers-with
3-StateOutputs'. .
'

KS54AHCT·245
KS74AHCT

AC ELECTRICAL CHARACTERISTICS

(Input

tr. tf~2

ns). AHCT245
"

Chtracterlltlc

Condltlons t

Symbol

KS74AHCT
KS54AHCT
T.-2S·C
T.... -40·C to ,+85°C T.", -5SOC to +125·C
Unit
Ycc-S.OY
Ycc=S.OY:t 10%
Ycc-S.OY:t10%
Typ

Propagation Delay.
AtoBorBtoA

Qutput Enable Time
GtoAorB

tpLH

CL=50pF.CL==150pF

tpHL

CL=50pF
CL=150pF

tPZH
I - - - - RL=1 kG

Input Capacitance
Output Capacitance
.Power Dissipation
Capacitance *

~
tpLZ'

Cpo

Min

Max

11
15

14
20

10
15

14
20

CL=50pF
CL=150pF

12
1.15

20
25

25
31

CL=50pF
CL=150pF

12

25
31

ns

ns

17

RL=1kG
CL==50pF

13

18

22

13

18

22

5

pF

Output Disabled

10

pF

~=Vcc

5
30

CIN
COUT

9
7
9

Max

20
25

tPZL
Output Disable Time.
Gto Aor B

Min

7

G=GND

(per stage)

ns

pF
2

* Cpo determines the no-load dynamic power dissipation: PO=CPD VCC fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

,254

1-of-8 Data Select~/Multiplexers
with 3-State Outputl \~ . ,;. . .

KS54AHCT251
KS74AHCT

FEATURES

DESCRIPTION

• Three-State Version of '151
• Three-State Outputs Interface Directly with System
Bus
• Performs Parallel-ta-Serial Conversion
• Compiementary Outputs Provide True and Inverted
Data
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3~tate outputs with high drive current
(Iol = 24 mA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These· data selectors/multiplexers contain full binary
decoding to select one-of-eight data sources and feature
strobe-controlled complementary three-state outputs.
The three-state outputs can interface with and drive data
lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state), the lowimpedance of the single enabled output will drive the bus
line to a high or low logic level. Both outputs are controlled by the strobe (<3). The outputs are disabled when G is
high.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION

D3

Vee

02

04

01

05

DO
Y

06

W

A

00(-4)------F~~~~)

--:-----lrF~~~:J

Ol.>.:C(3.:....)

07

G

B

GNO

C

03(1)

I~~~~

04 (15)

.:...-..:....----i=!=~~J

FUNCTION TABLE
INPUTS
SELECT
C

STROBE

A

G

X X X

H
L
L
L
L
L
L
L
L

L
L
L
L

B

OUTPUTS

L L
L H
H L
H H
H L ·L
H L 'H
H H L
H H H

Y

W

Z
DO

Z
DO

01
02
03
04
05
06
07

51
02
03
04
05
06
07

c8SAMSUNG
Electronics

2'55

I

KS54AHC'T
KS74AHCT

251

f-of-8 DiI,ta ~Se/ectorslMulll.iplexers
with 3-State Outputs

Absolute Maximum Ratings*
Supply Voltage Range Vee, '...... -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5\1 or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) .... , .... ±70 mA
Continuous Current Through
Vec or GND pins . . . . . . . . . . . . . . .. ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc ........... , . . 4.5V to 5.5V
DC Input & Output Voltages *, VIN, Your . . OV to Vcc
Operating Temperature
~
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ... , ... , . Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
()f the device, at or beyond them is not implied. Long exposure to these conditions may affect device reliability,

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTI'CS
c:!laracteristic

Symbol Test Conditions

(Vec=5V±10% Unless Otherwise Specified)

Ta =25°C
Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20jJA
10= -6mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20jJA
lo=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

JJA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vcc or GND

±0.5

±5.0

±10.0

JJA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

JJA

3.0

mA

Additional Worst
Case Supply
Current

,

KS54AHCT
KS74AHCT
Ta = -40°C to +85°C Ta = -55°C to +125°C Unit

.6lcc

VIN=Vee or GND
lour=OjJA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=OjJA

c8SAMSUNG
Electronics
.

Vee Vce -0.1
4.2
3.98
0

.

2·l

2.9

256

KS54AHCT
KS74AHCT

251.

1-0'-8 Data Selectors/Multiplexers'
';'k'~
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Conditions t

Symbol

(Input tr , tf<2 ns), AHCT251
T. =25°C
T.
Vee = 5.0V

i

Typ

Propagation Delay,
A, B or C to Y

Propagation Delay,
A, B or C to W

Propagation Delay,
Any D to Y

Propagation Delay,
Any D to W

Qutput Enable Time,
GtoYorW

-

Input Capacitance

Min

Max

Min

Milic

tPLH

CL=50pF
CL=150pF

13
16

21
26

25
31

tPHL

CL=50pF
CL=150pF

13
16

21
26

25
31

tPLH

CL=50pF
CL=150pF

15
18

24
29

27
33

tPHL

CL=50pF
CL=150pF

15
18

24
29

27
33

tPLH

CL=50pF
CL=150pF

9
12

15
20

18
24

tPHL

CL=50pF
CL =150pF

12

15
20

18
24

tpLH

CL=50pF
CL=150pF

8
11

15
20

18
24

tpHL

CL=50pF
CL=150pF

8
11

15
20

18
24

CL=50pF
CL=150pF

11
14

18
23

28

CL=50pF
CL=150pF

11
14
13

18
23
18

CL=50pF

13

18

5

pF

Output Disabled

10

pF

tPZH
RL=1kO
tPZL

Output Disable Time,
GtoYorW

KS54AHCT
KS74AHCT
+85°C T.= -55°C to +125°C
Unit
Vee=5.0V±10%
Vec=5.0V± 10%

=-40°C to

~ RL=1k:O
tpLZ
CIN

Output Capacitance

COUT

Power Dissipation
Capacitance *

Cpo

9

ns

ns

ns

ns

22
ns

22
28

22
22

·ns

pF

* Cpo determines the no-load dynamic power. dissipation: Po=Cpo VCC 1 , fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

257

I

;K'S5:4~HCt"2S3

KS74AHCT

,"
-

FEATUR,ES

DESCRIPTION

•
•
•
•

Each of these data selectors/multiplexers contains inverters
and drivers to supply full binary decoding data selection to
the AND-OR gates. Separate output control inputs are provided for each of the two four-line sections.

•
•
•
•
•

•

Three-State Ver.sion of '153
Permits Multiplexing from N Lines to 1 Line
Performs Parallel-to-Serial Conversion
Function, pin-out, speed and drive compatibility with
54/74ALS logic family
Low power consumption characteristic of CMOS
3-5tate outputs with high drive curr~nt
(loL = 24 mA @ VOL = O.5V) for direct bus interface
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°b to + 125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION
1G
:~

Vee

B

-

The three-state outputs can interface with and drive data
lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state) the lowimpedance of the single enabled output will drive the bus
line to a high or low logic level. Each output has its own
strobe (G). The output is disabled when its strobe is high.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

SELECT

DATA INPUTS

OUTPUT
CONTROL

OUTPUT

CO C1 C2 C3

G

y

H
L
L
L
L
L
L
L
L

Z

2G

1C3

A

1C2
1C1

2C3

1CO

2C1

2C2

1Y
GND

"

Dual 1-01·4' Data Selectors/Multiplexers
with 3-State Outputs '
',
.

,

B

A

X

X

X

L
L
L
L
H
H
H
H

L
L
H
H
L
L
H
H

L
H

X
X
X
X
X
X

X
X
X
L
H

X
X
X
X

X
X
X
X
X
L
H

X
X
X
X
X
X
X

X L
X (H

L
H
L
H
L
H
L
H

Address inputs A and 8 are common to both sections.
,

........

\

c8SAMSUNG
Electronics

258

KS54AHCT
KS74AHCT

253

.Dual 1-01-4 Data Selectors/Multiplexers
with 3-State Outputs

LOGIC DIAGRAM

lG

(6)

lCO
DATA 1
lCl

(5)

OUTPUT

lY
lC2

lC3

~~cr(

(4)

(3)

B

I

A

2CO

2Cl

(101

(11)

DATA 2

2C2

(12)

2C3

(13)

2G

(15)

OUTPUT
2Y

Absolute Maximum Ratings*
Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . . . . . .. ±70 mA
Continuous Current Through
Vee or GND pins ................ ±250 mA
Storage Temp~rature Range, T8 1g ••• -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power DiSSipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . , ........ , .... 4.5V to 5.5V
DC Input & Output Voltages·, V/N, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf .
Max 500ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

259

253

KS54AHCT
KS74AHCT

Dual 1-01-4 Data Selectors/Multiplexers
with 3-5tate-:Outputs

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V± 1 0% Unless Otherwise Specified)
KS74AHCT
KS54AHCT
T.=-40°Cto +85°C T.=-55°Cto +125°C Unit

T.=25°C

Symbol Test Conditions

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20JolA
10=-6mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20JolA
10=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

JoIA

Maximum 3-State
.Leakage Current

loz

Output Enable
=VIH
VOUT=VCC or GND

±0.5

±5.0

±10.0

jJA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

JoIA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
louT=OjJA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
IOUT=OJolA

~Icc

AC ELECTRICAL CHARACTERISTICS
Characteristic

Conditions t

Symbol

(Input tr • tl"2 ns). AHCT253
KS74AHCT
KS54AHCT
T. = 25°C
T. = -40°C to +85°C T. = -55°C to +125°C
Vcc=5.0V
Vcc=5.0V::t:10%
Vcc=5.0V::t: 10%
Min

Typ

Propagation Delay.
A or 8 to any Y

Propagation Delay.
Data (any C) to -any Y

tpLH

13
16

21
26

tpHL

CL=50pF
CL=150pF

13
16

21
26
-

tpLH

CL=50pF
CL=150pF

9
12

CL=50pF
CL =150pF

tpHL

Input Capacitance
Output Capacitance
Power Dissipation
Capacitance *

-

--

tpHZ
tpLZ

-

ns

13
20

18
34

CL=50pF
CL=150pF

10
13

16
21

19
35

CL=50pF
CL =150pF

10
13

16
21

19
35

RL=1kO
CL =50pF

13

18

22

13

18

22

5

pF

Output Disabled

10

pF

CIN
COUT

25
31
25
31

9
12

tPZL
Output Disable Time.
G to Y

13

Max

18
34

RL=1kO

-

-

Min

20

tPZH

Qutput Enable Time
G to Y

Max

CL=50pF
CL=150pF

Unit

--

ns

ns

ns

pF

Cpo
2

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

260

KS54AHCT
KS74AHCT

2571258

Quad 2-Line to 1-Line Data Selectorl
Multiplexers with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL = 24 mA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include" small outline" packages
(Available Tape & Reel), standard DIPs.

The '257 and '258 multiplex signals from for-bit data
sources to four-output data lines in bus organized systems.
The data presented at the outputs is non-inverted for the
'257, and inverted for the '258.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

FUNCTION TABLE

PIN CONFIGURATION

Inputs
AlB

Vee

1A

G

1B

4A

1Y

4B

2A

4Y

2B

3A

2Y

3B

GND

3Y

Output Y

Output
Control

Select

G

AlB

A

B

H

X
L
L

X
L

H

H
H

X
X

X
X
X
L
H

L
L
L
L

Data

'257

'258

Z

Z
H

L

H

L

L

HO

H

L

LOGIC DIAGRAMS
'257

1A ____________

'258

-+~~

1Y
1B-----------+~~~
2A-----------+~~

1Y

1B
2Y

2A

2Y

2B

2B-----------+~~~
3A-----------+~4_~

1A

3Y

3Y

3B-----------+~~-I

4A __________

-+~~-I

4Y
4B~

________

~~~

=8SAMSUNG
Electronics

261

II

.

,

,

.'

"zr"58
Qua.d 2-Line to. 1-Line Data5electorl
~ ...... Multiplexers with a-State Outputs

KS54AHCT 2·5·
.KS74AHCT ... ' I.J~

Absolute Maximum Ratings*

Supply Voltage Range Vee, ....... ~0.5Vt~ + tv
DC Input Diode Current, hK
('11< -o.sv or VI > Vee +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -O.SV or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(--0.5V Vo <: Vce +0.5V) ......... ±70 mA
Continuous Current Through
.
\Icc or GND pins ................ ±250 mA
Storage Temperature Range, T8 1g ••• -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mWI.°C from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . .. . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN, Your .. OV to Vcc
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns

<

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These ar,e stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V± 10% Unless Otherwise Specified)

Ta =25°C

I

KS74AHCT
KS54AHCT
Ta = -40!»C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20jJA
10=-6mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20jJA
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

Maximum Inpu)
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vce or GND

±0.5

±5.0

±10.0

JJA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

JJA

2.7

2.9

3.0

mA

'.

Additional Worst
Case Supply
Current

~Icc

VIN=VCC or GND
10ur-OjJA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10ur=OjJA

c8~SUNG

Vcc Vcc -0.1
4.2
3.98
0

V
,

JJA

262

KS54AHCT
KS74AHCT

257/258

Quad 2-Line to 1-LiitliiPiJitS,/-fi*ftor/
Multiplexers with 3-5JI.I, OU'tRlIt~'1

AC ELECTRICAL CHARACTERISTICS
Characteristic

tf~2 ns). AHCT257

KS54AHcf"
KS74AHCT
T. =25°C
T. = -40°C to +85°C T. = -55°C to+.125°C
Vcc=5.0V
Vcc=5.0V%10%
Vcc=5.0V% 1~%

Conditions t

Symbol

(Input t r •

Typ

14 . ,.
20

tpHL

CL=50pF
CL=150pF

7
10

12
17

14"
20

tPLH

CL=50pF
CL=150pF

12
15

20
25

30

CL=50pF
CL=150pF

12
15

20
25

?1.
~q

CL=50pF
CL=150pF

13
16

18
23

22
28,

CL=50pF
CL=150pF

13
16

18
23

22
28

Output Disable Time.

tPZH
RL =1 kO

tPZL
tPHZ

f---------

tpLZ

Input Capacitance

RL =1 kO
CL=50pF

-

Output Capacitance

COUT

Power Dissipation
Capacitance *

Cpo

Output Disabled

'.
"

ns

24

"

"

.

ns

12

15

2;2,"~ .

15

22
',j

"

ns

12
5

CIN

Unit

"',ax .

12
17-

tpHL

G to any Y

Min

7
10

Eropagation Delay.
AlB to any Y

Output Enable Time.
G to any Y

Max

CL=50pF
CL =150pF

tPLH

Propagation Delay.
A or B to any Y

Min

ns

',"

pF
pF

10

pF,,;

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

AC ELECTRICAL CHARACTERISTICS
Condltions t

Symbol

Characteristic

(Input tr • tf~2 ns). AHCT258

KS74AHCT
KS54AHCT
T. =25°C
T. = -40°C to +85°C T. = -55°C to :+:125°C
Vcc=5.0V
Vcc=5.0V%10%
Vcc=5.0V% 10%
Typ

Qutput Enable Time.
G to any Y

Input Capacitance

tpHL

CL=50pF
CL=150pF

6
9

8
13
8
13

tpLH

CL=50pF
CL=150pF

14
17

23
28

tpHL

CL=50pF
CL=150pF

14
17

23
,28

·28
34

CL=50pF
CL=150pF

11
14

18
23

~d
28

CL=50pF
CL=150pF

11
14

18
23

22
28

tPZH
RL = 1 kO

-

tpHZ

f---------

tpLZ

Power Dissipation
Capacitance *

COUT

,
ns

14

c',

1~

28
34'

ns

,",

;,:

"

;,

ns

13

18

22

13

18

22

5

pF

Output Disabled

10

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC fin.
t For AC switching test circuits and timing waveforms see section 2.

cSiSAMSUNG

ns

pF

Cpo

'

14 '
19

RL =1kO
CL=50pF

2

• • Electronics

Unli

Max

6
9

CIN

Output Capacitance

Min

CL=50pF
CL=150pF

tPZL
Output Disable Time.
G to any Y

Max

tpLH
Propagation Delay.
A or B to any Y

Eropagation Delay.
AlB to any Y

Min

I

259

KS54AHCT
KS14AHCT ,.;, '.

8-Bit Addressable Latches

FEATURES

DESCRIPTION

• 8-Blt paraJlel-out storage register performs serial-toparallel conversion with storage
• Asynchronous parallel clear
• Active high decoder
• Enable/Disable input simplifies expansion
• Expandable for N-blt applications
• Four distinct functional modes
• Function, pj,n-out, speed and drive compatibility with
54174ALS logic family
• Low power .consumption characteristic of CMOS
'. High-Drlve-Current outputs:
10l =8 mA @ VOL =0.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over Industrial and
military temperature ranges:
KS74AHCT: -: 40°C to + 85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

T~e

so

Vee

S1

CLR

S2

G

00
01

07

GND

L
H
L
H

Output of
Addressed
Latch

Each
Other
Output

0
alo
0

aiO
alo

L

In the clear mode, all outputs are low and unaffected by
the address and data inputs.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

L
L

Select Inputs '
Function
Addressable Latch
Memory
a-Une Demultiplexer
Clear

D - the level at the data input.
010 - the level of 010 (i = 0, 1, ... 7, 88 appropriate) before the
indicated steady-state input conditions were established .

..'- c8SAMSUNG
Electronics

In the demultiplexing mode, addressed outputs will follow
the state of the 0 input and all other outputs will remain low.

LATCH SELECTION TABLE

FUNCTION TABLE

Ci

In the memory mode, all latches remain in their previous
state and ate unaffected by the data' of address inputs.

06
05
04

03

H
H
L
L

In the addressable latch mode, data on the data input (D)
is written into the addressed latch. In this mode, data will
be written into the addressed latch with all non-addressed
latches remaining in their previous states.

0

Q2

CLR

The '259 has four distinct modes of operation that are
selected via the clear (CLRf and enable (G) inputs: 1) addressable latch; 2) memory; 3) active-high eight-channel
demultiplexer; and 4) clear.

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

Inputs

'259 is a high-speed addressable latch deSigned for
general purpose storage applications in digital systems. It
can be used for implementing working registers, serialholding registers and active-high decoders or
, demultiplexers.

S2
L
L
L

L
H
H
H
H

Latch

S1

SO

Addressed

L

L
H
L
H
L
H
L
H

0

L
H
H
L
L
H
H

1

2
3
4
5
6

7

,264.

KS54AblCT259
KS74·AHCT'

8-Sit Addressable Latches

LOGIC DIAGRAM
o
(13)

00

01

02

03

04

as

06

I

07

Absolute :Maximum Ratings*
Supply Voltage Range Vcc, .. .
-0.5V to + 7V
DC Input Diode Current, hK
(V, < -0.5V or V, > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V).
±35 mA
Continuous Current Through
Vcc or GND pins.
±125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. kong exposure to these conditions may affect device relfability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

265

, KS54AHC:J:~;259
KS744HCT . ,.~ \;.".

8-Bit Addressable, Latches

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V± 1 0% Unless Otherwise Specified)

T.=25°C

KS74AHCT
KS54AHCT
T. = -40°C to +85°C T. = -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
hipot Voltage

VIH

2.0

2.0

2.0

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Ou.tput Voltage

VOH

VIN=VIH or VIL
10=-20/-lA
10=-4mA

Vcc -0.1
3.84

Vcc :-0.1'
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL'
10 = 20/-lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

JAA

8.0

80.0

160.0

JAA

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

~Icc

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
10uT=OJAA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
IOUT=OJAA

AC ELECTRICAL CHARACTERISTICS
Symbol

Characteristic

Conditions t

Propagation Delay,
Data to any Q

-

Propagation Delay,
Address to any Q

-

T.=25°C
Vee=5_0V

Propagation Delay,
Q

-

G to any

Pulse Width

I CLR Low

I GLow

KS74AHCT
T. = -40°C to +85°C
Vee =5.0V:t 10%
Min

Max

KS54AHCT
T. = -55°C to +125°C
Vce=5.0V:t 10%
Min

9

15

18

tPLH

12

19

23

tpHL

12

19

23

CL=50pF

13

22

27

tpHL

13

22

27

tpLH

12

20

24

tpHL

12

20

24

tw

6

10

10

9

15

20

Unit

Max

tpHL

tpLH

,;:V

(Input tr , tf"2 ns), AHCT259

Typ

Propagation Delay
CLR to any Q

' .

ns
ns
ns
ns
ns

Setup Time
Data or Address before

Gt

tsu

10

15

:20

ns

Hold Time,
Data or Address before

Gt

th

-3

0

0

ns

Input Capacitance

CIN

5

pF

Power DisSipation Capacitance *

Cpo

80

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcd fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

266

KS54AHCT
KS74AHCT

266

Quad Exclusive-NOR Gates
with Open-Drain Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
.
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40~C to +85°C
KS54AHCT: -55°C to +125°Q
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent exclusive-NOR
gates with open-drain outputs. Using a suitable pull-up
resistor, these outputs may be connected to other opendrain outputs to implement wired-AND functions.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive .capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power .Ievels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

I

(3,4,10,11)
1A

Vee

1B

4B

A (1,5,8,12).

1Y

4A

B

2Y

4Y

2A

3Y

2B

3B

GND

3A

(2,6,9,13)

)I:>--;

~Y

FUNCTION TABLE

Inputs

Output

A

B

y

L
L

L

H

H

H
H

L

L
L

H

H

c8SAMSUNG
Electronics

267

KS54AHCT
KS74AHCT

266

Quad Exclusive-NOR Gates
with Open-Drain Outputs

Absolute Maximum Ratings*
Supply Voltage Range Vcc, ... . .. . -0.5V to + 7V
DC Input Diode Current, hK
(VI < -O.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 101<
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) . . . . . .
±35 mA
Continuous Current Through
Vcc or GND pins . . . . . . . . . . . . . . .. ± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oCfrom 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . .
4.5V to 5.5V
DC Input & Output Voltages *, VIN, Your . . OV to Vcc
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf ...... .
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logiC
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V± 10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20l-'A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

I-'A

Maximum Output
Leakage Current

loz

VIN=VIH or VIL
Vour=Vcc

±0.5

±5.0

±10.0

I-'A

Maximum Quiescent
Current

Icc

2.0

20.0

40.0

I-'A

3.0

mA

~_

Additional Worst
Case Supply
Current

Dolcc

0

VIN=VCC or GND
10ur=OJ-lA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10ur=0l-'A

----

2.7

AC ELECTRICAL CHARACTERISTICS
Characteristic

Propagation Delay

(Input tr ,

-

2.9

tf~2 ns). AHCT266

KS74AHCT
KS54AHCT
Ta =25°C
Ta= -40°C to +85°C Ta =-55°Cto +125°C
t
Symbol Conditions Vcc=5.0V
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ
Min
Max
Min
Max

~
tpHL

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

CL=50pF
RL=1kO

19

29

35

11

18

22

5

pF

(per gate)

15

pF

ns

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

268

KS54AHCT
KS74AHCT

273

Octal 0-Type Flip-Flops with Clear

FEATURES

DESCRIPTION

• Eight positive-edge-triggered Ootype flip-flops with
single-rail outputs
• Buffered common clock and asynchronous clear
• Function, pin-out, speed and drive compatibility with
54/74AlS logic family
• low power consumption characteristic of CMOS
• High-Orive-Current outputs:
10l = 24mA @ Val = O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.. 5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices are high-speed octal registers. They consist of eight positive-edge-triggered Ootype flip-flops with
individual 0 inputs and outputs. All flip flops are loaded
and cleared simultaneously by the common buffered clock
(ClK) and clear (ClR) inputs.

a

Information at the 0 inputs meeting the setup time requirements is transferred to the Q outputs on the positivegoing edge of the clock pulse. When the clock input is at
either the high or low level, the 0 input Signal has no effect at the output.
These devices provide speeds and drive capability
equivalent to their AlSTTl counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

I

FUNCTION TABLE
(Each Flip-Flop)

ClR

Vee

10
10

80

Inputs

80
70
70

20
20
30
3D
40
40

60
60
SO

Output

ClR

ClK

0

Q

l
H
H
H

X
t
t

X

l
H
l

H
l
X

l

00

SO

GNO

ClK

LOGIC DIAGRAM
10
(11)

3D

20
(3)

40

(7)

(4)

60

SO

(13)

(8)

80

70

(14)

(18)

(17)

ClK

(2)

10

c8SAMSUNG
Electronics

(S)

20

(6)

30

(9)

40

(1S)

(12)
SO

60

(16)

70

(19)

80.

269

273
"

KS54AHCT
KS74AHCT··

Octal D-Type Flip-Flops .with Clear'

Absolute Maximum Ratings*
Supply Voltage Range Vee, " " ' " -0.5V to +7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vce +0.5V), , , , , ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vce +0.5V) , , . , ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vce +0.5V) , , , , , . , , , ±70 mA
Continuous Current Through
Vee or GND pins , , , , .... , .... , " ± 250 mA
Storage Temperature Range, Tslg . . . - 65 ° C to + 150 ° C
Power DisSipation Per Package, Pdt ..... , 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . , . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +S'5°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ..... '.' . . Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

* Absolute Maximum Ratings are those values' beyond
which permanent'damage to the device may occur.
These are stress ratings only and functional operation '
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C
Typ

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum LOW-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN = VIH or VIL
lo=-20",A
lo:<::::-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20",A
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
,0.33
0.5

0.1
0.4

V

Maximum Input
Current

lIN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

8.0
'r---'

80.0

,160.0

,.,A

2.9

3.0

mA

Additional Worst
Case Supply
Current

Alec

VIN=Vee or GND
louT=O,.,A '.
per input pin
VI=2.4V,
other Inputs:
at Vee or GND
IOUT=O,.,A

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

2.7

270

KS54AHCT
KS74AHCT

273

Octal D-Type

AC ELECTRICAL CHARACTERISTICS
Characteristic

Maximum Clock Frequency
Propagation Delay.
ClK to any

a

Propagation Delay.
CLR to any

a

Pulse Width

ClR low

Symbol

Conditions t

f max

CL=50pF

Setup Time
before ClKt

Data

Min

35

tpLH

CL=50pF
CL=150pF

tpHL

CL=50pF
CL=150pF

tPHL

CL=50pF
CL=150pF

tsu

Clear inactive
State

Hold time. Data after ClKt

KS74AHCT
KS54AHCT
T. =25°C
T. = -40°C to +85°C T.= -55°C to +125°C
Vcc=5.0V
Vcc=5.0V:1: 10%
Vcc=5.0V:1:10%

50
13
13

tw

th

with. Clear

(Input tr • tf~2 ns). AHCT273

Typ

ClK High or low

F/iP-Fi;,ps

Max

Min

Max

30

MHz

f---

18.5
20

19
34

13
13

17.5
20

19
34

13
14

18.5
23

28

22

8

14

17

8

14

17

6

10

10

9

15

15

-3

0

0

Unit

ns

ns
ns
ns

ns
-~

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per package)

5

pF

150

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

271

I

4'1)·0

KS54AHCT
KS74AHCT ..4t,o.

I

9-Bit Parity GeneratorstCheckers

FEATURES

DESCRIPTION

• Generates Odd or Even Parity for Nine Data Lines
• Cascadable for N-Bits Parity
• Can be used to Upgrade Existil"!g Systems using MSI
Parity Circuits
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
(IOL 24 mA @ VOL O.SV) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.SV to S.SV
• Characterized for operation. over Industrial and
military temperature ranges:
KS74HCTLS: -40°C to +8S o C
KSS4HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These universal, nine-bit ~ity generators/checkers feature
odd and even outputs to facilitate operation of either odd
or even parity application. The word-length capability is easily expanded by cascading.

=

=

The devices can be used to upgrade the performance of
most systems utilizing the '180 parity generator/checker,
Although the '280 is implemented without expander inputs,
the corresponding function is provided by the availability
of an input at pin 4 and the absence of any internal connection at pin 3. This permits the '280 to be substituted
for the' 180 in existing deSigns to produce an identical function even if the devices are mixed. with existing '180's.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOs and CMOS devices
without any external components.
All inputs and outputs are protected from .damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

PIN CONFIGURATION

G

Vee

H

F

NC

E
0

1: EVEN

C

1:000

B

GNO

A

c8SAMSUNG
Electronics

NUMBER OF INPUTS A
THRU I THAT ARE HIGH
0,2,4,6,8
1,3,5,7,9

OUTPUTS
~

EVEN

~ODD

H

L

L

H

272

KS54AHCT
KS74AHCT

280
.

9-Bit Parity Generators/Checkers

LOGIC DIAGRAM

A

B

c

(81

(91

(101

I
EVEN

0

E

(111

(121

(131

I
000

(11

G

H

(21

(41

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±70 mA
Continuous Current Through
Vee or GND pins. . . . . . . . . .
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics
.

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee ............. 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vce
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

273

I

·KS54AHCT
KS74AHCT

280

9-Bit Parity Generators/Checkers

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)

T. =25°C

KS74AHCT
KS54AHCT
T.= -40°C to +85°C T.=-55°Cto +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

M~imum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=- 2OI-'A
lo=-6mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=201-'A
lo=12mA
lo=2.4mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

I-'A

8.0

80.0

160.0

I-'A

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

Alcc

Vcc Vcc -0.1
3.98
4.2
0

VIN=VCC or GND
louT=OI-'A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
lOUT = Ol-'A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input tr , tf:E;;2 ns), AHCT280

T.=25°C
Vcc=5.0V
Typ

Propagation Delay,
Any input to I Even

Propagation Delay,
Any input to I Odd

KS74AHCT
T.= -40:C to +85°C
Vcc=5.0V:t10%
Min

Min

CL=50pF
CL=150pF

12
15

21
25

24
30

tpHL

CL=50pF
CL=150pF

12
15

21
25

24
30

tPLH

CL=50pF
CL=150pF

13
16

22
27

26
32

tpHL

CL=50pF
CL=150pF

13
16

22
27

26
32

CIN

Power Dissipation Capacitance *

Cpo

5

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

Unit

Max

tPLH

Input Capacitance

c8SAMSUNG
Electronics

Max

KS54AHCT
T. = -55°C to +125°C
Vcc=5.0V:t 10%

ns

ns

pF
pF

KS54AHCT
KS74AHCT

299

8-Bit Universal Shift/Storage Registers
with 3-State Outputs

FEATURES

DESCRIPTION

• Multiplexed 110 ports provides improved bit density
• Four modes of operation: hold (store), shift right, shift
left, and load data
• Operates with outputs enabled or at high impedance
• Can be cascaded for N-bit word lengths
• Direct overriding clear
• Application:
Stacked or push-down registers, buffer storage, and
accumulator· registers

These eight-bit universal registers feature multiplexed I/O
ports to achieve full eight·bit data handling. Two functionselect inputs and two output·control inputs can be used
to choose the modes of operation listed in the function
table.

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
Low power consumption characteristic of CMOS
3-State outputs with drive current
(lOL 24 rnA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -.40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages·
(Available Tape & Reel), standard DIPs.

=

=

Synchronous parallel loading is accomplished by taking both
function·select lines SO and S1 high. This places the threestate outputs in a high-impedance state and permits data
that is applied on the 1/0 ports to be clocked into the
register. Reading out of the register can be accomplished
while the outputs are enabled in any mode. Clearing oc·
curs asynchronously when CLR is low. Pulling either of the
output controls, G1 or G2, high disables the outputs but
this has no effect on clearing, shifting, or storage of data
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION
so

Vee

<31

S1

132

Sl

G/OG

O~

E/OE

H/OH

C/O e

F/O F

AJO A

0/0 0

O~

BlOB

ClR

ClK

GND

SR

c8SAMSUNG
Electronics

275

I

KS54AHCT
KS74AHCT

299

8-Bit Universal Shift/Storage Registers
with 3-State Outputs

LOGIC DIAGRAM

(18) SHIFT lEFT
rH-H---'--- SERIAL INPUT

SERIAL INPUT

ClK -----'-(1-'-2)--Do+.....---t---tH4...--t--ttt--'l

(13)

(7)

'AlO.

SlOB

1/0 PORTS NOT SHOWN:
(6) C/Oe (5) E/O E
(14) D/QD (15) F/O F

(4)

(16)

OIOG

H/OH

FUNCTION TABLE
110 Ports

Outputs

A/QA B/Qs C/Qc D/QD E/QE F/QF G/Qo H/QH

QA' QH'

Inputs
51 50

Output
Control
G1 G2

Mode

ClR

ClK

5l 5R

Clear

L
L
L

X
L
H

L
X
H

L
L
X

L
L
X

X
X
X

X
X
X

X
X
X

L
L
X

Hold

H
H

L
X

L
X

L
L

L
L

X
L

X
X

X
X

Shift Right

H
H

L
L

H
H

L
L

L
L

t

t

X
X

Shift Left

H
H

H
H

L
L

L
L

L
L

t
t

Load

H

H

H

X

X

t

L
l
X

L
l
X

L
L
X

l
l
X

L
l
X

OAO

OSO

OCO

ODO

OEO

OFO

OGO

OHO

OAO OHO

OAO

OSO

OCO

ODO

OEO

OFO

OGO

OHO

OAO OHO

H
L

H
L

OAn

OSn

OCn

ODn

OEn

OFn

OGn

OAn

OSn

OCn

ODn

OEn

OFn

OGn

H
L

OGn

H
L

X
X

OSn
OSn

OCn
OCn

ODn
ODn

OEn
OEOn

OFn
OFn

OGn
OGn

OHn
OHn

H
L

OSn
OSn

H
L

X

X

a

b

c

d

e

f

g

h

a

h

L
l
X

L
L
X

l
L
L

l
L
L

OGn

When one or both output controls are high the eight input/output terminals are disabled to the high-impedance state; however,
sequential operation or clearing of the register is not affected.

c8SAMSUNG
Electronics

276

KS54AHCT
KS74AHCT

299

8-Bit Universal Shift/Storage Registers
with 3-State Outputs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oCfrom 65°C to 85°C

Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
... 1±70 mA
Continuous Current Through
Vee or GND pins. . . . . . . . . . . . .
'±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt . . . .. 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vce
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf ....

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may Qccur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta :;;:25°C
Typ

KS74AHCT
KS54AHCT
Ta =-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum
High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum
Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1

Vee -0.1

3.84

3.7

Minimum HighLevel Output
Voltage

Miximum
Low-Level
Output Voltage

Maximum Input
Current

VOH

VOL

VIN=VIH or VIL
10=-20/AA
Vee Vee -0.1
Q'A and Q'H outputs:
10= -4mA
4.2
3.98
QA thru QH outputs:
10= -6mA
4.2
3.84
VIN=VIH or VIL
10= 2O/AA
Q'A and Q'H outputs:
10=4mA
10=8mA
QA thru QH outputs:
lo=12mA
lo=24mA

0

V

3.7

0.1

0.1

0.1

0.26
0.39

0.33
0.5

0.4

0.26
0.39

0.33
0.5

0.4

V

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

/AA

Maximum 3-State
Leakage Current

loz

Output Enable = VIN
VouT=Vee or GND

±0.5

±5.0

±10.0

/AA

Maximum
Quiescent
Supply Current

Icc

VIN=Vee or GND
10lJT=0/AA

8.0

80.0

160.0

/AA

per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~ICe

c8SAMSUNG
Electronics

277

II

KS54AHCT
KS74AHCT

29·9

8-EJit Universal Shift/Storage RegIsters
with 3-State Outputs .

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Input tr , t,<2 ns), AHCT299

Condltlonst

KS74AHCT
KS54AHCT
T.=2SOC
T.= -40°C to +8SoC T.= -SS°(: to +12SoC
Unit
Vee = S.OV
Vee=5.0V:10%
Vec=5.0V: 10%
Typ

MIl"!

Maximum Clock Frequency

fmax

50

30

Propagation Delay,
ClK to O'A or O'H

tpLH

f---

10

17

20

10

17

20

Propagation Delay,
ClR to O'A or O'H

tPHL

13

22

26

Propagation Delay,
ClK to OA thru OH

tpHL

QutP!!t Enable Time,
G1, G2, to OA thru OH

Pulse Width

ClK High or low

16
21

19
25

tpHL

CL=50pF
CL=150pF

10
13

16
21

19
25

tPHL

CL=50pF
CL=150pF

13
16

22
27

26
31

CL=50pF
CL=150pF

11
14

19
24

23
29

CL=50pF
CL=150pF

11
14

19
24

23
29

11

18

22

11

18

22

tPZH
I---

~
tpLZ

RL=1 kO

RL=1kO
CL=50pF

9

15

20

5

8

10

SO and S1

12

20

10

8

13

15

8

13

15

8

13

15

0

0

0

Setup time
before ClKt low-Level Inputs

tw

tsu

CLR Inactive
Hold Time
after CLKt

SO and S1

th

All Inputs

Input Capacitance

MHz

10
13

ClR low
High-level Inputs

Max

25

CL=50pF
CL=150pF

tPZL
Output Disable Time,
G1, G2 to OA thru OH

Min

tpLH

1---.

Propagation Delay,
£lR to OA thru OH

CL=50pF

Max

ns
ns

ns

ns

ns

ns
ns

ns

ns

0
CIN

Output Capacitance

COUT

Power Dissipation Capacitance *

Cpo

Output Disabled

5

pF

10

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

=8~~SUNG

pF
fin.

278

KS54AHCT
KS74AHCT

322

8-Bit Shift Registers
with Sign Extend

FEATURES

DESCRIPTION

• Multiplexed inputs/outputs provide improved bit
density
• Sign extend function
• Direct overriding clear
• 3 state outputs drive bus lines directly
• Function pin-out, speed and drive compatibility with
54/74 ALS logic family
• Low power consumption characteristic of CMOS
• High drive current output
(loL=24mA @ VOL=O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices.
• Wide Operating voltage range: 4.5V to S.SV
~ Characterized for operation over industrial and
military temperature range:
KS74AHCT: -40°C to +85°
KS54AHCT: - 55°C to + 125°
• Package options include plastic "small outline"
packages, standard plastic and ceramic 30D-mil DIPs

These a bit Shift registers have multiplexed input/output
data ports to accomplish full a·bit data handling in a single
20'pin package. Serial data may enter the shift·right register
through either Do or 01 input as selected by the data
select pin. A serial output is also provided. Synchronous
parallel loading is ach'ieved by taking the register enable
and the SIP inputs low. This places the three-state input/output ports in the data input mode. Data are entered
on the low-to-high clock transition. The data extend function repeats the sign in the QA flip flop during shifting. An
overriding clear input clears the internal register when taken
low whether the outputs are enabled or off. The output
enable does not affect synchronous operation of the
register.

I

PIN CONFIGURATION

Register
enable
SIP

Do

Vee
Data select (OS)
Sigh extend (SE)

AlO A

0,

CIOe

BIOa

E/OE

0100

G/OG

Output
enable
clear

FIOF

H/OH
OH'

GNO

:8 ~!!"SUNG

279

KS54AHCT
KS74AHCT

322,

8-BitShift Registers
with Sign Extend

FUNCTION TABLE
INPUT/OUT~~~____

INPUT
OPERATION

Clear

Register
enable

SIP

Sign
extend

Data
select

Output
enable

Clock

X
X

X
X

L
L

X
X

L
L

L
L

L
L

A/aA

BlaB

Clear
Hold

H

H

X

X

X

L

X

QAO

QBO

Qco

Shift Right

H
H

L
L

H
H

H
H

L
H

L
L

t
t

Do
01

QAn
QAn

QBn
QBn

Sign Extend

H

L

H

L

X

L

t

QAn

QAn

QBn

Load

H

L

L

X

X

X

t

a

b

c

~

Output

a

i

H
X

! ____

C/ac ... H/aH'

L
L

X
H

j

H

L !
L
L i
L
-QHo-1-o:;--

-g:-l
QGo

h

~]

2J
'

h

When the output enable is high, the eight input/output terminals are disabled to the high-impedance state: however,
sequential operation or clearing of the register is not affected. If both the register enable input and the SIP input are
low while the clear input is low, the register is cleared while the eight input/output terminals are disabled to the highimpedance state.
H= high level (steady state)
L= low level (steady state)
X= irrelevant (any inputs, including transitions)
t = transition from low to high level
QAo ... QHo= the level of QA through QH, respectively, before the indicated steady-state conditions were established.
QAn ... QHn= the level of QA through QH, respectively, before the most recent t transition of the clock.
Do. 01 = the level of steady-state inputs at inputs Do and 01 respectively
a... h= the level of steady-state inputs at input A through H respectively.

LOGIC DIAGRAM
REGISTE.R (1)

ENABLE
G

,t

OUTPUT (8)

ENABLE :....:...--------<1......J
DE

c8SAMSUNG
~Iectronics .

280

322

8-BltShilt Registers
with Sign Extend

KS54AHCT .
KS74AH.CT

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C
Ceramic Package (J): -12mW/oC from 100°C to 125°C

Supply Voltage Range Vee, ....... -0.5V to +7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 125 mA
Storage T~mperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommend8c:t Operating Conditions
Supply Voltage, Vee . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT . .
to Vee
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

ov

• Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur
These are stress ratings only and functional operation
of the device at or beyond them is not im~ied. Long ex-posure to these conditions may affect device reliability

DC ELECTRICAL CHARACTERISTICS
Characteristic

T.=25°C

Symbol Test Conditions

KS74AHCT
KS54AHCT
T.= -40°C to +85°C T.- -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20,..A
lo=-4mA

Vee -0.1·
3.84

Veo -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2OIolA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±1.0

lolA

-

Maximum Input
Current

I

Vee Vee -0.1
3.98
4.2
0

liN

VIN=VCC or GND

±0.1

±1.0

Maximum Quiescent
Supply Current

lee

VIN=VCC or GND
louT=O,..A

8.0

80.0

Additional Worst
Case Supply
Current

per input in
VI=2.4V
~Icc other Inputs:
at Vee or GND
IOUT=O,..A

-.

c8SAMSUNG
Electronics

I

(Vce=5V± 1 0% Unless Otherwise Specified)

160.0
,..A
--------- - -

_._--

.'-"'-

I

i

2.7

2.9

!

mAl
j

j

281

8·Blt SfJlhRtigISf.,.
wlth . Slgn Extend
AC ELECTRICAL CHARACTERISTICS
, ,

Symbol

Charact.'at'c

Condltlon,t

(Input tr, tf<2 ns), AHCT322
KS74AHCT
. KS54AHCT
T._25·C
T.- -40·C to +85·C T.-,-55·C to +125·C
Unit
Vcc-S.ov
Vcc-S.OV:t::10%
Vcc-S.OV:t:: 10%
Typ

Min

f max

50

30

M8ximum Propagation
Delay, Clock to OH

~

12

20

24

12

20

24

Maximum Propagation
Delay, Clear to OH'

tpHL

13

21

25

Maximum Propagation
Delay, Clock to OA-OH

~

Maximum Clock Frequency

tPLH

Propagation Delay
Clear to OA-OH

."

12

20

24

20

24

tPHL

13

21

25

13

21

25

13

21

25

~
tP'LZ

Clock Pulse Width

Max

25

12

tPZL
Output Disable Time

Min

tPLH

~

Output Enable Time

CL=50pF

Max

IHigh
ILow

RL=1kO
CL=50pF

11

18

21

11

18

21

tw

7

12

15

tw

7

12

15

Clear Pulse Width. Low

tw

7

12

15

Data Set up Time

ts

8

15

20

Select Set up Time

ts

8

15

20

Data Hold Time

th

-3

0

0

Select Hold Time

th

5

8

10

Recovery Time

tree

10

17

20

Maximum Input Capacitance

Cjn

5

Power Dissipation Capacitance

Cpo

Hio

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc1 f
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns

0

ns
ns
pF
pF

+ Icc Vee.

282

KS54AHCT
KS74AHCT

352

Dual 4-Line to 1-Line Data
Selectors/Multiplexers

FEATURES

DESCRIPTION

•
•
•
•

Each of these data selectors/multiplexers contains Inverters
and drivers to supply fully complementary binary decoding
data selection to the AND·OR·invert gates. Separate strobe
inputs (<3) are provided for each of the two four·line
sections.

•
•
•
•
•
•

•

Inverting Version of '153
Permits Multiplexing from N Lines to 1 Line
Performs Parallel-ta-Serial Conversion
Strobe (Enable) Line Provided for Cascading
(N Lines to n Lines)
Function. pin-out, spaed and drive compatibility with
54/74ALS logic family
Low power consumption characteristic of CMOS
High drive current outputs
(IOL= 24 mA @ VOL = O.5V) for direct bus interface
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS,and CMOS devices
without any external components.
All inputs an(j outputs are protected from damage due to
static discharge by internal diode clamps toVcc and
ground.

I

LOGIC DIAGRAM
PIN CONFIGU.RATION
1G(1)
1<3

Vee

B

---t-r-t-t~

2G

1C3

A

1C2

2C3

1C1

2C2

1CO

:::..l::!-::

2C1

1Y

DATA

1C3-~(3~)-----t---t---t--t--"',

2Y

SELECT [

FUNCTION TABLE

SELECT
INPUTS
-B

A

X

X

L
L
L
L

L
L
H
H
L
L
H
H

H
H

H
H

STROBE

OUTPUT

CO C1 C2 C3

G

y

H

H

L
L
L
L
L
L
L
L

H

L

H
X
X
X
X
X

X

X
X
X
L
H
X
X
X
X

X
X
X
X
X
L
H
X
X

X
X
X
X
X
X
X
L
H

B (2)

A P4 )

DATA INPUTS

X

1Y

---:-+-+-+H-4--'

1 C2.:.(4:..:.)_ _ _

1

2CO

GND

1

DATA

21

- - :- -:-1=t= Ft=:f~

::::..!..:::..:::.:...:

2Y

2C3 (13)

L
H
L
H
L

H
L

Select inputs A and B are common to both sections.

=8SAMSUNG
Electronics

283

KS54AH'CT
KS74AHCT

35,/2
'

DUsl4-Line to 1-Line·Data
Selectors/Multiplexers

Absolute Maximum Ratings*
Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or V, > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) .... '..... ±70 mA
Continuous Current Through
Vcc or GND pins ................ ±250 mA
. Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc .............. 4.5V to 5.5V
DC Input & Output Voltages·, V'N, VOUT .. OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V±10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits
I

Minimum High-Level
Input Voltage

V,H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V,L

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

V'N=V'H or V,L
10=-20IlA
10=-6mA

Vcc -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

V'N=V'H or V,L
10=20",A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximul]1 Input
Current

hN

V'N=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.6.lcc

V'N=Vec or GND
10uT=Of.lA
per input pin
V,=2.4V
other Inputs:
at Vec or GND
10uT=0",A

c8SAMSUNG
Electronics

Vcc Vcc -0.1
4.2
3.98
0

284

KS54AHCT
KS74AHCT

352

Dual 4-Line to 1-Line Data
Selectors/Multiplexers

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr •

tf~2 ns). AHCT352

KS74AHCT
KS54AHCT
T. =25 DC
T.= _40DC to +85°C T.=-55°Cto +125°C
Vcc=5.0V
Vcc=5.0V%10%
Vcc=5.0V% 10%

Symbol

Condltlons t

tpLH

CL=50pF
CL=150pF

14
17

23
28

28
34

tpHL

CL=50pF
CL =150pF

14
17

23
28

28
34

tpLH

CL=50pF
CL=150pF

11
14

18
23

21
27

tpHL

CL=50pF
CL=150pF

11
14

18
23

21
27

tpLH

CL=50pF
CL=150pF

12
15

20
25

24
30

tPHL

CL=50pF
CL=150pF

12
15

20
25

24
30

Typ

Propagation Delay.
AorBtoY

Propagation Delay.
Data (Any C) to Y

~ropagation

Delay.

G to Y
Input Capacitance
Power Dissipation Capacitance *

C'N
Cpo

5

* Cpo determines the no· load dynamic power dissipation: Po=Cpo Vee 2
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

Min

Max

Min

Unit

Max

ns

ns

ns

pF
pF

I

fin.

285

.

:'-

,;

.

.

:",
'

.

.

'
\

Dual 1-of-4 Data'Selectors/Multiplexers
with 3..State Outputs

KS54AHCT353
KS74AHCT
FEATURES

DESCRIPTION

•
•
•
•

Each of these data selectors/multiplexers Contains inverters
and drivers to supply, full binary decoding data selection
to the AND~bR~invert gates. Separate strobe inputs (0) are
provided for each of the two four-line sections.

Inverting Version of '253
Permits Multiplexing from N lines to 1 line
Performs ParaJlel-to-Serlal Conversi9n
Function, pin-ol.it, speed and drive compatibility with
54174ALS logic family
• Low power consumption c,haracteristic of CMOS
• 3-State outputs with high drive current
(IOL 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide, operating voltage' range: 4.SV toS.5V
• Characterized for operation over industrial and
military temperature rar'lges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C ,to + 125°C
• Package options include "small outline" packages
'(Available Tape & Reel), standard DIPs.

=

The three-state outputs can interface with and, drive data
lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state) the lowimpedance of the single enabled output will drive the bus
line to a high or low logic leveL Each output has its own
strobe (G), The output is disabled when its strobe is high,

=

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outplits are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground. ,

PIN CONFIGURATION

1(3

Vee

B

213

1C3

A

1C2

2C3

1C1

2C2

1CO

2C1

1Y

2CO

GND

LOGIC DIAGRAM
STROBE
ENABLE

2Y

DATA 1

- (1)
1G

j::.::..:.:-----,--+--+-+-l--I....-J

1Y

1C3,.l;(3::!.)-----+--+-+-I~-L.J

FUNCTION TABLE

B (2)

SELECT
INPUTS

SELECT {

DATA INPUTS

OUTPUT
CONTROL

OUTPUT

CO C1 C2 C3

G

y

H
'L
L
L
L
L
L
L
L

H
l..
H
L
H
L
H
L

B

A

X

X

X

L
L
L
L
H
H
H
H

L
L
H
H
L
L
H
H

L
H

X
X
X
X
X
X

X
X
X
L
H

X
X
X
X

X
X
X
X
X

I<

L
H

X
X

X
X

L
H

X
X
X
X

A (14)

Z
DATA

2'f: : ~,)

2C2!-'-"'-----'i=::t==t:==I

2Y

2C31~(~13~)-----tjt===~~
STROBE _(15}
ENABLE 2G

Select inputs A and B arecomrrion to both sections,

=82!'1SUNG

286

KS54AHCT
KS74AHCT

353

Dual 1-of-4 Data SeleQldjs/Multiplexers
with 3-State Outputs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee ........ -O.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
,(-0.5V < Vo < Vee +0.5V) . . . .
±70 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . . .
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ..... . 500 mW

Recommended Operating Conditions
Supply Voltage, Vce . . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, Your .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times. tr , tf

• AbSolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Ta =25°C

Symbol Test Conditions

-

(Vce=5V± 10% Unless Otherwise Specified)

Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/.lA
10= -6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum 'Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vee or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

~---

-

Additional Worst
Case Supply
Current

~Iee

VIN=Vee or GND
10ur=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=0",A

c8SAMSUNG
FI"'~trnni~J::

Vee Vee -0.1
4.2
3.98
0

287

I

. KS54AHCT
KS74AHCT

3,6·-3

Dual 1- 01-4 DatIJSfJ/ect~,IMultiplexers
with 3-8tate Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Condltlons t

Symbol

(Input tr , tf~2 ns), AHCT353
KS74AHCT
KS54AHCT
T. =2S·C
T. = -40°C to +8SOC .T.=-SSOCto +12S0C
Unit
Ycc-S.OY
Ycc=S.OY:10%
Ycc=S.OY: 10%
Typ

Propagation Delay,
AorBtoanyY

Propagation Delay,
Data (Any C) to Any Y

Min

Max

tpLH

24
29

28
34

tpHL

CL=50pF
CL=150pF

14
17

24
29

28
34

tpLI:i

CL=50pF
CL=150pF

10
13

18
23

21
27

tpHL

CL=50pF
CL=150pF

10
13

18
23

21
27

10
13

16
21

10
13

16
21

19
25
. ,19
25

CL=50pF
tPZH
CL =150pF
RL=1k'O
r---CL=50pF
tPZL
CL=150pF

Output Disable Time,
Y

r------

Input' Capacitance

Max

14
17

Output Enable Time,
G to Y

G to

Min

CL=50pF
CL=150pF

tpHZ
tpLZ

COUl

Power DisSipation
Capacitance *

Cpo

ns

ns

RL=1kO
CL=50pF

10

18

22

10

18

22

5

pF

Output Disabled

10

pF

CIN

Output Capacitance

ns

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2

ns

pF
fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

288

KS54AHCT
KS74AHCT

3651366
3671368"

Hex Bus-Drivers with
3-State Outputs

FEATURES

DESCRIPTION

• Function, pln-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These high-speed Hex bus drivers are designed specifically
to improve both the performance and density of 3-state
memory address drivers, clock drivers, and bus oriented
receivers and transmitters.

=

=

The '365 and '366 have two output enables (<31 and (32)
NOR'ed together to control aI/ six gates. The '367 and
'368 have two output enables which are configured so that
one enable (<31) controls four gates and the other (<32) controls the remaining two gates. The '366 and '368 have inverting data paths. The '365 and '367 have noninverting
data paths.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without ariy external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLES

PIN CONFIGURATION

'365 and '366
<31

Vee

A1

<32

Y"1

A6

A2

Y6

Y2

A5

A3

Y5

Y3

A4

GND

Y4

Inputs

G1

'367 and '368

nputs

--------1---~

Y Outputs

G2 A '365

'366

L
L
H

L
L

L
H

L
H

H
L

X

X

H

X
X

Z
Z

Z

Y Outputs

---

l G1 & G2 i A '367 '368

z

!

L

ILL

H

I

~

I I

~ ~

~

I

LOGIC DIAGRAMS
'365

'366

'367

'368

Yl

Yl

Yl

Yl

Y2

Y2

Y2

Y2

Y3

Y3

Y3

Y3

Y4

Y4

Y4

Y4

Y5
Y6

Y5

Y5

Y6

Y6

Y5
Y6

G1

c8SAMSUNG
Electronics

289

II

KS54AHC'T,.3651366
KS74AHCT

Hex Bus-Drillers with
3-State Outputs

367/368

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or.vo > Vcc +0;5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) . . . . .
±70 rnA
Continuous Current Through
Vcc or GND pins .............. " ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , t, . . . . . . . . . Max 500 ns

• .Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

T8 =25°C

Symbol Test Conditions

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage
Maximum Low-Level
Input Voltage

KS74AHCT
KS~4AHCT
T8= -40°C to +85°C T8= -55°C to +125°C Unit

2.0

V

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

2.0

VIH

0.8

VIL

2.0
0.8

,

Minimum High-Level
Output Voltage

VOH

V,N=VIH or V,L
lo=-20",A
lo=-6mA

Maximum Low-Level
Output Voltage

VOL

V,N = V,H or V,l
lo=20",A
lo=12mA
lo=24mA

Maximum Input
Current

hN

V,N=V!:e or' GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Le~ka~e Current

loz

Output Enable
=V,H
VouT=Vee or GND

±0.5 .

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Alce

V'N=Vce or GND
IOUT=O",A
per input pin
V,=2.4V
other Inputs:
at Vcc or GND
IOUT=O",A

=8SAMSUNG
Electronics
.

Vec Vcc -0.1
4.2
3.98
0

I

290

KS54AHCT
KS74AHCT

3651366
3671368

Hex Bus-Drivers with
3-State Outputs
AHCT365. AHCT366.

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input tr •

tf~2 ns). AHCT367. AHCT368

KS74AHCT
KS54AHCT
T. =2SOC
T.=-40°Cto +85°C T. = -55°C to + 125°C
Unit
Vcc=S.ov
Vcc=S.OV:t10%
Vcc=5.0V:t 10%
Typ

Min

Max

Min

Max

tPLH

CL= 50pF
CL =150pF

8
11

14
19

17
33

tpHL

CL= 50pF
CL =150pF

8
11

14
19

17
33

Output Enable Time.
G to Y

CL= 50pF
tPZH
CL=150pF
I - - - RL=1kO
CL= 50pF
tPZL
CL =150pF

14
17

23
28

28
34

14
17

23
28

28
34

Output Disable Time.

~

Propagation Delay.
A to Y.

G to Y
Input Capacitance
Output Capacitance
Power Dissipation
Capacitance· (per driver)

tpLZ

Cpo

ns

RL=1kO
CL=50pF

15

20

22

15

20

22

5

pF

Output Disabled

10

pF

CIN
COUT

ns

G=Vcc
G=GND

5

• Cpo determines the no-load dynamic power dissipation: Po=CpO Vec

ns

pF
2

I

fin.

t For AC switching test circuits and timing waveforms see section 2.

.

c8SAMSUNG
Flp~trnni~~

291

KS54AHCT'
KS74AHCT

373

Octal D-TypeTransparent Latches
with 3-State Outputs

FEATURES

DESCRIPTION

• 8 latches il1 a single package
• Full parallel access for loading
• Function; pin-out, speed and drive compatibility with
54174ALSIogic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOl =24 mA @ VOL =O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KSS4AHCT: -55°C to +12SoC
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '373 consists of 8 high-speed O-type latches coupled to 3-state output buffers with high drive current capability. It can be used in implementing buffer registers, 1/0 ports,
bidirectional bus drivers and working registers.

5C

Vee

80

The output buffers are controlled by a common Signal (OC)
which places the outputs at a high-impedance state when
it is taken high. The OC signal does not affect the internal
operations of the latches. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

10
10
20

The latches are transparent: when the enable (E) is high,
the 0 outputs follow the data (0) inputs. When the enable
is low, the outputs latch at the levels that were set up at
the 0 inputs.

FUNCTION TABLE

80

(Each Latch)

70

20

70

30
3D
40
40

60
60
50
50

GNo

E

Inputs

Output

OC

E

D

Q

L
L
L
H

H
H
L
X

H
L
X
X

H
L

00
Z

LOGIC DIAGRAM
10

20

3D

40

50

60

70

80

10

20

30

40

50

60

70

c8SAMSUNG
Electronics

80

292

KS54AHCT
KS74AHCT

373

Octal O-Type Transparent Latches
with 3-State Outputs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, . . . . .. -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
........
± 250 mA
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Yoltages~, VIN, VOUT
OV to Vce
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
. ... Max 500 ns
Input Rise & F=all Times, t r , tf ..

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

Ta=25°C

Symbol ' Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

VIN=VIH or VIL
10=-20~A

10=-6mA

Vee Vee -0.1
4.2
3.98

VIN=VIH or VIL
lo=20~A

10=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

~A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

~A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

~A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Iee

VIN=Vee or GND
10uT=0~A

per input pin
V,=2.4V
other Inputs:
at Vee or GND

0

10uT=0~A

c8SAMSUNG
Electronics

293

II

Octal 0-Type Transparent Latches·
with 3-State Outputs
AC ELECTRICAL CHARACTERISTICS
Characteristic

KS74AHCT
KS54AHCT
T.=25°C
T. = -40°C to +85°C T. -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V:t 10%
Vcc=5.0V:t 1,00/.0

=

Conditions t

Symbol

(Input tr , tf~2 ns), AHCT373

Typ

Propagation Delay,
D to Q

Propagation Delay,
Eto Q

Min

Max

tpLH

16
19

tpHL

Cl= 50pF
Cl =150pF

11
14

16
19

19
23
19
23

tplH

Cl= 50pF
Cl=150pF

14
17

23
28

27
33

tpHl

Cl= 50pF
Cl =150pF

14
17

23
28

27
33

12
15

20
25

24
30

20
25

24
30

13

18

22

13

18

22

Cl= 50pF
Cl=150pF

r----- Rl=l kO

tpHZ
r----- Rl=1kO
tpLZ

.

/

Cl= 50pF
Cl=150pF

tPZl
Output Disable Time,
OC to any Q

Max

11
14

tPZH
Output Enable Time,
OC to any Q

Min

Cl= 50pF
Cl=150pF

Cl=50pF

12
15

ns

ns

ns

ns

Pulse Width,
E High

tw

9

15

18

ns

Setup Time,
D before E'

tsu

6

10

10

ns

Hold Time,
Dafter E'

th

3

5

7

ns

Input Capacitance
Output Capacitance
Power Dissipation
Capacitance * (per latch)

5

pF

COUT Output Disabled

10

pF

OC=Vcc
OC=GND

5
30

CIN

Cpo

pF
2

* Cpo determines the no-load dynamic power dissipation: PO=CPD Vcc fin.
t for AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

294

i~

KS54AHCT
KS7'4AHCT

374

Octal D-Type Flip-Flops
with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74AlS logic family
• low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOl =24 rnA @ VOL =O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '374 consists of 8 high-speed D-type edge-triggered
flip-flops coupled to 3-state output buffers with high drive
current capability. It can be used in implementing buffer
registers, 1/0 ports, bidirectional bus driver and working
registers.
The flip-flops are edge-triggered on the positive transition
of the clock. The Q outputs are set to the logic levels that
were set up at the D. inputs.
The output buffers are controlled by a common signal (OC)
which places the outputs at a high-impedance state when
it is taken high. The OC signal does not affect the internal
operations of the flip-flops. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

6C

Vee

10

80

10

80

20
20

7D

30
30

60

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

70

(Each Flip-Flop)

60
50

40
40

Inputs

Output

50
ClK

G,NO

Q

OC ClK D

L
L
L
H

t
t
L
X

H
L

X
X

H
L
Qo

Z

LOGIC DIAGRAM

10

c8SAMSUNG
Electronics

20

30

40

50

60

70

10

20

30

40

50

60

80

295

II

Octal D~Type Flip-Flops
with 3-State Outputs
Absolute Maximum Ratings*
Supply Voltage Range Vee, . . . . . . . -0.5V to + 7V
DC Input Diode Current, hK
!VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±70 mA
Continuous Current Through
Vee or GND pins ................ ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only ,and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

Vil

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or Vil
10=-20",A
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or Vil
10=20",A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/AA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

VIN=Vee or GND
louT=O",A
per input pin

0

Yi==~2.4V
~Iee

other Inputs:
at Vee or GND
10UT=01AA

c8SAMSUNG
Ele~tronics

Vee Vee -0.1
4.2
3.98

296

KS54AHCT
KS74AHCT"

3'7A
,..,.

Octal 0- Type Flip-Flops
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Maximum Operating
Frequency
Propagation Delay,
ClK to any Q

fmax

T.=25°C
Vcc=5.0V

Conditions r

Symbol

(Input tr , tf~2 ns), AHCT374

CL= 50pF

KS74AHCT
T. = -40°C to +85°C
Vcc=5.0V:10%

Typ

Min

50

35

tpLH

CL= 50pF
CL=150pF

10
13

- - - t-----j-

CL= 50pF
CL=150pF

Output Enable Time, " f RL=1 kG
OC to any Q
tPZL

CL= 50pF
CL=150pF
CL- 50pF
CL=150pF

Output Disable Time, tPHZ
RL=1 kfl
I--OC to any Q
CL=50pF
tpLZ
Pulse Width,
ClK High or low

tw

Setup Time,
D before ClKt

tsu

Hold Time,
Dafter ClKt

th

Power Dissipation
Capacitance *

Unit

--

Max

Min

Max

30
15
19

MHz
17
23

c--

15
19
-----

10
13
~-~--~

tpzH

Input Capacitance

KS54AHCT
+125°C
Vcc=5.0V: 10%

= -55°C to

I----

tpHL

Output Capacitance

T.

ns
17
23
- - - ~----- 1-------

-~-

----

1---------

11
14
11
14

18
23
18
23 - -

13

18

22

13

18

22

7

22
28
22
28

r---

- - - r-----

15

18

ns

ns
ns

- - -1-----

9

14

13

ns

- - - - - - - - t--

-3
5

CIN
COUT

0

Output Disabled
OC=Vcc
OC=GND (per stage)

10

i

0

ns
--1--------

I--P~I--~~

5
30

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSU.NG
Electronics

297

I

Octal D-Type Flip-Flops
with Clock Enable

DESCRIPTION

FEATURES
• Can be used for implementing
- Buffer/Storage Registers
- Shl.ft. Registers
- Pattern Generators
• Function, pln-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High~Drive-Current outputs:
10L =8mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and· CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

Information at the 0 inputs meeting the setup time requirements is transferred to the 0 outputs on the positivegoing edge of the clock pulse if G is low. Clock triggering
occurs at a particular voltage level and is not directly related
to the transition time of the positive-going pulse. When the
clock input is at either the high or low level, the 0 input
signal has no effect at the output. The circuits are design~
ed to prevent false clocking by transitioins at the G input.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

PIN CONFIGURATION
G

The '377 contains eight positive-edge-triggered Ootype flipflops with an enable ihput. This part is similar to '273 but
features a latched clock enable (G) instead of a common
clear.

FUNCTION TABLE

Vee

1Q

8Q

10

80

(EACH FLIP-FLOP)

20

7D

INPUTS

2Q

7Q

.3Q

6Q

G

ClK

DATA

3D

60

H

X

40

50
5Q

L
L
X

t
;t

X
H
L
X

4Q

CLK

GNO

L

OUTPUT
Q

00
H
L

00

LOGIC DIAGRAM
10
(3)

20
(4)

c8SAMSUNG
Electronics

3D
(7)

40
(8)

50
(13)

80
(14)

70
(17)

80
(18)

298

KS54AHCT
KS74AHCT·

377
.

Octal D-Type Flip-Flops
with Clock Enable

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, .... . . . -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . . . . . .
±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 1 25 mA
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vce .............. 4.5V to 5.5V
DC Input & Output Voltages·, VIN. Your .. OV to Vee
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf ......... Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always .betied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

Typ

Ta

KS74AHCT
+85°C Ta

=-40°C to

KS54AHCT
+125°C Unit

= -55°C to

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

VI

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

vi

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Iee

VIN=Vee or GND
10ur=0j.iA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=0",A

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

299

II

377

Octal O-Type Flip-Flops
with Clock·Enable

KS54AHCT
KS74AHCT;, "

AC ELECTRICAL CHARACTERISTICS
Characteristic

Maximum Clock Frequency
Propagation Delay,
ClK to any Q

Symbol

Condltlons t

f max

(Input tr , tf~2 ns), AHCT377
KS74AHCT
KS54AHCT
Ta =25°C T.=-400Cto +85°C
T.=-55°C to +125°C
Unit
Vcc=5.OV
Vcc=5.OV:t10%
Vcc=5.OV:t 10%
Typ

Min

50

35

Max

Min

Max

30

MHz

10

16

19

tpHL

10

16

19

~

CL=50pF

ns

Pulse
Width

G" low
ClK High or low

tw

8
8

14
14

17
17

ns

Setup time
before ClKt

Data
G High or low

tsu

6
9

10
15

10
15

ns

th

-3

0

0

Hold Time, Data after ClKt
Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

per package

ns

5

pF

50

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

300

KS54AHCT
KS74AHCT

390

Dual 4-Bit Decade Counters

FEATURES

DESCRIPTION

• Individual clock for A and B flip-flops provide dual + 2
and + 5 counters
• Direct clear for each 4-bit counter
• Significant improvement in system density through
reduced counter package count.
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
(IOL = 8 rnA @. VOL =O.5V)
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices incorporate dual divide-by-two and dividefive counters, which can be used to implement cycle
lengths equal to any whole and/or cumulative multiple of
2 and/or 5 up to divide-by-1 00. When conneoted as a biquinary counter, the ~eparate divide-by-two circuit can be
used to provide symmetry (a square ware) at the final outpur stage. The '390 incorporates dual divide-by-two and
divide-by-five counters, which can be used to implement
cycle lengths equal to any whole and/or cumulative
multiples of 2 and/or 5 up to divide-by-1 00. When connected as a bi-quinary counter, the separate divide-by-tow
circuit can be used to provide symmetry (a square wave)
.at the final outpur stage. The '390 has parallel outputs from
each counter stage so that any submultiple of the input
count frequency is available for system-timing signals.

PIN CONFIGURATION
1CKA

Vee

1CLR

2CKA

1QA

These devices prOVide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

2CLR

1CKB

2QA

1Qe

2CKB

1Qe

2Qs

1Qo

2Qe

GNO

2Qo

FUNCTION TABLES
BIQUINARY (5-2)
(EACH COUNTER)
(See Note B)

BCD COUNT SEQUENCE
(EACH COUNTER)
(See Note A)
OUTPUT

COUNT

0
1
2
3
4
5
6
7
8
9

OUTPUT

COUNT

Qo

Qc

Qs

QA

L
L
L
L
L
L
L
L
H
H

L
L
L
L
H
H
H
H
L
L

L
L
H
H
L
L
H
H
L
L

L
H
L
H
L
H
L
H
L
H

I

0
1
2
3
4
5
6
7
8
9

Qo

Qc

Qs

QA

L
L
L
L
L

L
L
L
L

L
L

L
H
L

H

L
L
L

L
L

H
H

L

L

L

H
H
H
H
H

L
L
L
L

H

H
H

H

H
H

I

NOTES A. Output QA is connected to input CKB for BCD count.
B. OutputQo is connected to input CKA for biquinary count.

c8SAMSUNG
Electronics

301

II

Dual 4-Bit Decade Counters
LOGIC DIAGRAM

CKA

(1,15)

T
CLEAR

OB (5,11) OB
CKB

(4,12)

T

(7,9)

00
00
(2,14)

CLEAR

CLR

- Absolute Maximum Ratings*
Supply Voltage Range Vco. . . . . . . . -O.SV to + 7V
DC Input Diode Current, hK
(VI < -O.SV or VI > Vcc +O.SV) . . . .. ±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) ......... ±35 mA
Continuous Current Through
Vcc or GND pins . . . . . . . . . . . . . . .. ± 125 mA
Storage Temperature Range; Tstg ... -65°C to +1S0°C
Power Dissipation Per Package. Pdt ...... SOO mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 6SoC to 85°C.

Recommended Operating Conditions
Supply Voltage. Vcc .............. 4.5V to 5.5V
DC Input & Output Voltages·, VIN, Vour .. OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf .. . . . . . . . Max 500 ns
Unused inputs must always be tied to an. appropriate logic
voltage level (either Vccor GND)

302

390

KS54AHCT
KS74AHCT

Dual 4-Bit Decade Counters

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)
KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Ta =25°C

Test Conditions

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

VOH

VIN=VIH or VIL
10=-20,.,A
10= -4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20,.,A
10=4mA
10=8mA

Maximum Input
Current

hN '

VIN=Vee or GND

Additional Worst
Case Supply
Current

Icc

~Iee

Vee Vee -0.1
4.2
3.98
0

VIN=Vee or GND
10uT=0,.,A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0,.,A

Vee -0.1
3.84

Vee -0.1
3.7

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

,.,A

8.0

80.0

160.0

,.,A

2.7

2.9

3.0

mA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Propagation Delay,
CKA
QA or CKB to Qs

to

Symbol

V
"- -

Minimum High-Level
Output Voltage

Maximum Quiescent
Supply Current

V

Conditions t

f max

V

(Input tr , tf~2 ns), AHCT390
KS54AHCT
KS74AHCT
Ta=25°C
Ta = -40°C to +85°C Ta =-55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0Vz10%
Vcc=5.0Vz 10%
Typ

Min

50

30

Max

Min

Max

25

MHz

Propagation Delay,
CKA to QA

~

9

15

18

ns

. tpHL

9

15

18

ns

Propagation Delay,
CKA to Qe

tpLH

r--

24

40

48

ns

tpHL

24

40

48

ns

Propagation Delay,
CKB to Qs

~

10

17

21

ns

tpHL

10

17

21

ns

Propagation Delay,
CKB to Qe

tpLH

r---

16

27

33

ns

tpHL

16

27

33

ns

Propagation Delay,
CKB to Qo

~

10

17

21

ns

tpHL

10

17

21

ns

Propagation Delay,
CLR to Any Q

tpHL

19

30

35

ns

I

CKA or CKB
High or Low
CLR High

CL =50pF

7

12

15

7

12

15

tsu

5

8

10

Input Capacitance

CIN

5

Power Dissipation Capocitance

Cpo

Pulse Width

Minimum Setup Time,
CLR inactive before CKA or CKB

tw

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vec 2
t For AC switching test circuits" and timing waveforms see section 2.

c8SAMSUNG
Electronics

ns

ns
pF
pF

fin.

303

I

393
'.'

KS,~;4A.HCT
KS74AHCT'

Dual 4-bitBin.ry Co",nte,fs

FEATURES

DESCRIPTION

• F.. nctlon, pin-out, speed and drive compatibility with
54174ALS. logic family
• Low power consumption characteristic of CMOS
• High-Drlv.Current outputs:
10l =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '393 consists of two independent 4-bit binary counters
each with its own clear and clock inputs. N-bit. binary
counters can be implemented with each package providing
the capability of divide-by-256. parallel outputs from .each
counter stage provided any submultiple of the input count
frequency for system timing signals.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION
Vee

lCLK
lClR

OA

CLK------1I:t.

2ClK
2ClR

lOA

20A
20a

lOa
10e
100

20c
20 0

GND

Oc

00

LOGIC TIMING WAVEFORMS
o

I

1

I

2

I

3

I

4

I

5

I

6

1

7

1

8

1

9

1 10

I

11

I

12

1 13

114

1 15

I

0

I

ClK
ClR

~L

______________________________________________________________________

OA
Oa ]

Oc

J

00

J

I

=8~SUNG

L

L
L
304

KS54AHCT
KS74AHCT

393

Dual 4-blt BilJllry Counters

Absolute Maximum Ratings*
Supply Voltage Range Vcc. . . . . .
-0.5V to +7V
DC Input Diode Current. hK
(VI < -0.5V or VI> Vcc +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vcc +0.5V) . .
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vcc
........ 4.5V to 5.5V
DC Input & Output Voltages *. VIN. Your . . OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Ri 3e & Fall Times. t r • tf ..
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vcc=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

Minimum High-Level
Input Voltage

VIH

Maximum Low-Level
Input Voltage

VIL

KS74AHCT
KS54AHCT
Ta =-40°Cto +85°C Ta=-55°Cto +125°C Unit
Guaranteed Limits

2.0

2.0

2.0

V

0.8

0.8

0.8

V

Vcc -0.1
3.84

Vcc -0.1
3.7

V

VIN=VIH or VIL

Minimum High-Level
Output Voltage

VOH

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

hN

Maximum Quiescent
Supply Current

Icc

10=-20~A

10=-4mA

Vcc Vcc -0.1
4.2
3.98

VIN=VIH or VIL

Additional Worst
Case Supply
Current

~Icc

10=20~A

10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=VCC or GND

±0.1

±1.0

±1.0

~A

8.0

80.0

160.0

~A

2.7

2.9

3.0

mA

VIN=VCC or GND
10UT=0~A

per input pin
VI=2.4V
other Inputs:
at Vcc or GND

10u~=0~A

c8SAMSUNG
~1"l'trnnil'''

0

305

a

393

KS54AHCT
KS74AHCT .

Dual 4-bit Binary Counters

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr ,

tf~2 ns), AHCT393

KS74AHCT
KS54AHCT
Ta=25°C
Ta":: -40°C to +85°C Ta= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V:t10%
Vcc=5.0V:t 10%
Typ

Min

Maximum Clock Frequency

f max

50

30

Propagation Delay,
A to OA

tpLH

'---

14

22

26

tpHL

14

22

26

Propagation Delay,
A to Os

-

tPLH

18

27

32

tpHL

18

27

32

Propagation Dealy,
A to Oc

-

tpLH

20

33

40

tPHL

20

33

40

Propagation Delay,
A to 00

-

Propagation Dealy,
CLR to any 0
Pulse
Width

I A Input High

or Low

ICLR High

Setup Time,
CLR Inactive before A

CL=50pF

Min

Max

25

MHz

tpLH

26

40

48

tpHL

26

40

48

tPHL

15

25

30

tw
tsu

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

7

12

15

7

12

15

5

8

10

ns
ns
ns
ns
ns
ns
ns
pF

5
(per counter)

pF

40

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

·c8SAMSUNG

Max

fin.

306

KS54AHCT
KS74AHCT

399

Quad 2-Port Registers

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOl =8 mA @ VOL =O.5V
• .Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These are high-speed quad 2-port registers. They are the
logical equivalent of a quad 2-input multiplexer followed by
a quad 4-bit edge-triggered register. A common select input (SELl selects between two 4-bit input ports. The
selected data is transferred to the output register on the
low-to-high transition of the clock input.

PIN CONFIGURATION

Vee

0.
1A

00
10
20

28
18
Os

GNO

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

SEL

2A

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

SEL

Port 1

I
..

I

_

J
I

I

~lIIput_

Inputs

a

Pori 2

x

I

_.--l-...-

L

I

I

2C
1C
Oe

ClK

I

= Low Voltage Level one setup time prior to the low-to-high

clock transition
h = High Voltage Level one setup time prior to the low-to-high
clock transition

c8SAMSUNG
1:I.o.I'+..n.ni,...~

307

KS54AHCT
KS74AHCT

399

Quad 2-Port Registers

LOGIC DIAGRAM

Q.

1B(~6~1-----------+~--~,

281£L------+-+---,-4..,..,J
1C

~1~1~________-+-+-__~~

12
2C (,.:..
: : l - - - - -_ _ _ _ _ _+-11-----4.....J

1o (:..:.1-"41'--______-+-+-__..--,

20

(~13=1

_ _ _ _ _ _ _ _ _~~

ClK (_91_ _ _ _ _ _ _ _ _ _--1

Absolute Maximum Ratings·
Supply Voltage Range Vcc, .. .
-0.5V to + 7V
DC Input Diode Current, J,K
(VI < -0.5V or VI > Vce +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vce +0.5V)
±35 rnA
Continuous Current Through
Vee or GND pins .........
± 1 25 rnA
Storage Temperature Range, Tstg . . . - 65 ° C to + 150 ° C
Power Dissipation Per Package, Pdt ...... 500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
'::Io,..tr"ni,..~

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . . . . . 4.5V to .5.5V
DC Inpul& Output Voltages·, VIN, VOUT .. OV to Vce
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

308

KS54AHCT
KS74AHCT

399

Quad 2-Port Registers

DC ELECTRICAL CHARACTERlsnCS

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Ta=25°C

Symbol Test Conditions

Characteristic

(Vcc=5V± 1 0% Unless Otherwise Specified)

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/AA
10= -4mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/AA
10=4mA
10==8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

/AA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/AA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Icc

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
10uT=0/AA
per input pin
VI==2.4V
other Inputs:
at Vcc or GND
louT=O/AA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditionst

(Input tr • tf~2 ns), AHCT399

KS54AHCT
KS74AHCT
Ta =25°C
Ta = -40°C to +85°C Ta = -55°C to +125°C
Vcc=5.0V
Vcc=5.0V± 10%
Vcc=5.0V±10%
Typ

Propagation Delay.
ClK to Q

Time
ibefore ClKt

I Data

I Word Select

Max

Min

Max

19

23

tpHL

12

19

23

tw

6

t---

Pulse Width.
ClK High or low

Min

12

tpLH

tsu
th

Hold Time. Data after ClKt
Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

CL=50pF

10

ns
ns

10

15

6

10

15

0

0

5

ns

15

6
-3

Unit

ns
pF
pF

* .Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

309

I

423
..

Dual Retriggerable Monostable
Multivibrator with Clear

KS54AHCT
KS74AHCT·

FEATURES

DESCRIPTION

• Simple pulse width formula tw = 0.45RC
• DC triggered from active HIGH or active Low inputs
• Retriggerable for very long output pUlses up to 100 %
duty cycle
• Overriding clear terminates output pulse
• SchmiU trigger A & B inputs allow infinite rise and
fall times on these inputs
• Functions, pin-out, speed and drive compativility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High drive current outputs:
IOL=8mA @ VOL=0.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range; 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '423 contains dual retriggerable monostable
multivibrators with output pulsewidth control by two
methods. The basic pulse time is programmed by selection of an external resistor (REXT) and capacitor (CEXT). The
external resistor and capacitor are normally connected as
shown timing component.
Once triggered, the basic output pulse width may be extended by retriggering the gated active Low-going edge
input (Ai) or the active High-going edge input (8i). 8y
repeating this process, the output pulse period (nQ=HIGH,
nQ=LOW) can be made as long as desired.
Pulse width stability over a wide range of temperature and
supply is achieved using linear CMOS techniques.
The output pulse equation is simply;
tw=0.45X(REXT) (CEXT)
Where tw is in seconds. R is in ohm. and C is in fards.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

PIN CONFIGURATION

Inputs
A1

Vee

B1

Ron/COT

Grn1
0"1
02
C EXT2
REXT2/CEXT

COT.

01
0"2
Grn2

A

B

Q

Q

L
X
X
H
H

X
H
X
L

X
X
L
t
H

L
L
L

H
H
H

JL
Il..

l.S
l.S

+

B2

1\2

c8SAMSUNG
Electronics

Outputs

CLR

H=
L=
X=
t=

HIGH voltage level
LOW voltage level
don't care
LOW to HIGH transition
+= HIGH to LOW transition
Jl..= one HIGH level output pulse
LS= one LOW level output pulse

310

KS54AHCT
KS74AHCT

423

Dual Retriggerable Monostable
Multivibrator with Clear

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package(N): -'12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ............... -0.5V to + 7V
DC Input Diode Current, hK
(VI<-0.5V or VI>Vce+0.5V) ................. ±20 mA
DC Output Diode Current, 10k
(Vo<-0.5V or Vo>Vee+0.5V) ............... ±20 mA
Continuous OUtput Current Per Pin, 10
(-0.5V Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±70 mA
Continuous Current Through
Vec or GND pins
. . .. ± 250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee .............. 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf . . . . . . . . . Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability

Unused inputs must always be tiep to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta=-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

Vee -0.1
3.84

Vee -0.1
3.7

V

VIN=VIH or VIL
10=-20/JA
10=-6mA I

Vee Vee -0.1
4.2
3.98

VIN=VIH or VIL
Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

10=20~A

10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

~A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

/AA

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

~Iee

0

I

VIN=Vee or GND
10UT=0~A

per input pin
VI=2.4V
other Inputs:
at Vee or GND

8.0

80.0

160.0

~A

2.7

2.9

3.0

rnA

I

I

10uT=0~A

c8SAMSUNG
Electronics

314

KS54AHCT ~D:J/~DD
KS74AHCT

4671468

AC ELECTRICAL CHARACTERISTICS
Parameter

Symbol

Conditions

Octal Buffers and Line Drivers
with 3-State Outputs
AHCT465, AHCT466,
(Input tr, t,4I02 ns), AHCT467. AHCT468
T.=2SoC
Vee=S.OV

KS74AHCT
S4AHCT
T.= -40·C to +8S·C T. = + 55°C to -+ 125°C
Unit
Vee=5.0V:t:10%
Vee'" S.OV:t: 10%

Typ

Propagation Delay,
A to Y

Min

Max

Min

Max

tpLH

CL=oOpF
CL=150pF

7
10

12
17

14
20

tPHL

CL=50pF
CL=150pF

7
10

12
17

14
20

20
25

Output Enable Time,
Enable to Y

CL=50pF
tPZH
CL ==150pF
r----- RL=1k!l
CL=50pF
tPZL
CL=150pF

12
15
12
15

20
25

24
30

Output Disable Time,
Enable to Y

tPHZ
- tpLZ

RL=1k!l
CL=50pF

13

18

22

13

18

22

Output Disabled
Output Disabled
Output Enabled

10

Input Capacitance

CIN

Output Capacitance

COUT

Power Dissipation
Capacitance· (per stage)

Cpo

24
30

-~

-------

- ns

-

c8SAMSUNG
Electronics

ns
pF

5
-~

5
30

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
For AC switching test circuits and timing waveforms see section 2.

ns

t----~-----

pF
pF

I

fin.

315

KS54AHCT

5181519

8-Bit Identity
Comparators

KS74AHCT.,52015211522
FEATURES

DESCRIPTION

• Compares two 8-bit words
• '518, '520 and 522 have 20kO pull-up Resistors on
Q Inputs

These identity comparators perform comparisons on two
eight-bit binary or BCD words. The '518 and '519 provide
P=Q outputs, while the '520, 521, and '522 provide P=Q
outputs. The '518; '519, and '522 have open-drain
outputs. The '518, '520, and '522 feature 20-kO inputs
for analog or switch data.

Ty'PE

INPUT
PULL-UP
RESISTOR

OUTPUT FUNCTION
AND
CONFIGURATION

'518

Yes

P=Q Open-Drain

'519

No

P=Q Open-Drain

'520

Yes

P=Q Totem-Pole

'521

No

P=Q Totem-Pole

'522

Yes

P=Q Open-Drain

t '521 is identical to '688

These devices provide. speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL =24 mA @ VOL =0.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5_5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

FUNCTION TABLE

PIN CONFIGURATION

G

INPUTS

Vee

PO

P=O/P=Ot

00
P1

07

01

06

P2

P6

02

05

PQ

L

L

H

L

L

H

H

L

H

t P=.Q for '518

and '519;
P=Q for '520, '521, '522.

c8SAMSUNG
Electronics

316

KS54AHCT
KS74AHCT

518/519
520/521/522

..8-8it Identity
Comparators

LOGIC DIAGRAMS
'5181'519

'5201'5211'522

P7

P7

07
P6

P6

06--..., .......---

06

P5

P5----t1

05

~ou-1

05

P4

04
P3-----.~~

P3-----.~~

o~

03----. ...~

P2
02

P2
(7)

P1~\_

I

I

01~
PO

I

I
01----.~~

(2)

OO--""~~

Absolute Maximum Ratings·
Supply Voltage Range Vee, ...... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V <- Vo < Vec +0.5V) . . .
±70 mA
Continuous Current Through
Vee or GND pins. . . . . . .
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt. . . .. 500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
CI.o.,,+rnni,...o-

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/o.C from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vce
Operating Temperature·
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
.. Max 500 ns
Input Rise & Fall Times. tr , tf
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

317

KS54AHCT
'KS74AHCT

518/519
520/521/522

DC ELECTRICAL CHARACTERISTICS
Parameter

Symbol

~:

------------

I

Maximum Low-Level
Input y,?~!age
Minimum High-Level
Output Voltage
(Totem-pole Outputs)

I

Maximum Low-Level
Output Voltage
(All Outputs)

----Maximum Input
i Current,
(,518, '520 and '522

(Vcc""5V± 1 0% UnlesS Otherwise Specified)

~a=250_~
typ
---

Test Conditions

!

Minimum High-Level
Input Voltage

8-Bit Identity
Comparators
54AHCT
KS74AHCT
TA = -400C to +850C Ta =-55°Cto +125°C Unit
Guaranteed Limlt$
---~

2.0

VfH
...

~.---

-~-

2.0

2.0

c--- - - - - - - - - - 1 - - - - - - - - - - - 0.8

V,L

VOH

V'N=V'H or V,L
lo=-20/AA
lo=-6mA

- -- - - V'N=V'H or V,L
lo= 2O/AA
VOL
lo=12mA
lo=24mA

0.8

o l~put)

- - - - - - - - - -1 - - - - - - - - - - - - -

0
I---- -

0.1
0.26
0.39

~-------------

Vee -0.1
3.84

Vcc Vcc -0.1
4.2
3.93
--~-

----

V

--- - - - - - - - - - - -

0.8

-1---- - - - - - 1 - - - - - - - - - - - - - -

~-

V
-V

Vce -0.1
3.7
~----------

---

0.1
0.4

V

0.1
0.33
0.5
--

~-

----

--

-- ---

Vee=Max
V'N=2.7V
V'N=0.4V

-0.2
-0.6

-0.2
-0.6

-0.2
-0.6

mA

Maximum Input
Current
(All other Inputs)

liN

V'N=VCC or GND

±0.1

±1.0

±1.0

IJA

Maximum Output
Leakage Current
(Open-Drain Outputs)

loz

V'N=V'H or V,L
Vour=Vee

±0.5

±5.0

±10.0

IJA

For '518, '520 and
'522:
V'N=GND (00-07)
V'N=VCC or GND
(all other inputs)

3.5

3.5

3.5

mA

For '519 and '521:
VIN=Vce or GND
lour=O/AA

8.0

80.0

160.0

IJA

per input pin
V,=2.4V
other Inputs:
at Vce orGND
lour = OJAA

2.7

2.9

3.0

mA

Maximum
Ouiescent
Supply Current

Additional Worst
Case Supply
Current

Icc

.6. Icc

c8SAMSUNG
Clft.......,..,_;,,~

318

518/519
~~~::~g~ 520/521/522
AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions

(Input tr • tf~2 ns). AHCT518. AHCT5·19

54/74ACHT
T.=25°C
Vcc=5V
Typical

Propagation Delay.
P or Q to P=Q

Propagation Delay.
G to P=Q

tpHL

CL=50pF
CL=150pF

15
18

25
30

30
36

tpLH

C=50pF
CL=150pF

16
19

23
28

27
33

tpHL

CL=50pF
CL=150pF

11
14

18
23

22
28

Symbol

Conditions

(Input tr • tf~2 ns). AHCT520. AHCT521

54174ACHT
KS74AHCT
T,.=25°C T. = - 40°C to + 85°C
Vcc=5V:t10%
Vcc=5V
Max

Min

19
24

23
29

tPHL

CL=50pF
CL=150pF

12
15

19
24

23
29

tPLH

C=50pF
CL=150pF

11
14

17
22

20
26

tpHL

CL=50pF
CL=150pF

11
14

17
22

20
26

Conditions

(Input tr • tf~2 ns). AHC522

54174ACHT
KS74AHCT
54AHCT
T,.=25°C T. = -40°C to +85°C T. = -55°C to +125°C
Vcc=5V
Vcc=5V± 10%
Vcc=5.0V± 10%
Min

Max

Min

CL=50pF
CL=150pF

19
22

28
33

33
39

tPHL

CL=50pi=
CL=150pF

14
17

23
28

28
34

tpL:H

C=50pF
CL=150pF

16
19

23
28

27
33

tpHL

CL=50pF
CL=150pF

11
14

18
27

22
33

CIN
Cpo

5

Unit

Max

tpLH

Power Dissipation Capacitance *

ns

.pF

Typical

Input Capacitance

ns

pF

5

AC ELECTRICAL CHARACTERISTICS
Symbol

Unit

Max

12
15

CIN

Propagation Delay.
G to P=Q

Min

54AHCT
T. = -55°C to + 125°C
Vc c =5.0V:t 10%

CL=50pF
CL=150pF

Cpo

ns

pF

tpLH

Power Dissipation Capacitance *

ns

pF

5

Typical

Input Capacitance

Unit

Max

35
41

AC ELECTRICAL CHARACTERISTICS

Pr.opagation Delay.
P or Q to P=Q

Min

tPLH

CIN

Characteristic

Max

30
35

Cpo

Propagation Delay.
G to P=Q

Min

54AHCT
T. = -55°C to + 125°C
Vcc=5.0V:t 100/.

20
23

Power Dissipation Capacitance *

Propagation Delay.
P or Q to P=Q

KS74AHCT
T. = -40°C to +85°C
Vcc=5V:t10%

CL=50pF
CL =150pF

Input Capacitance

Characteristic

B-Bit Identity
Comparators

ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms' see section 2.

cHSAMSUNG

319

I

Octal.. D-Type Tra:nsparent Latches
. .
with "~-State Outputs
FEATURES

DESCRIPTION

• 8 I~tches"in a single package
• Full parallel access for loading
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL 24 rnA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: - 55°C to + 125°C
• Package options Include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '533 consists of 8 high-speed Ootype latchescQupled to 3-state output buffers with high drive current capability.lt can be used in implementing buffer registers, I/O ports,
bidirectional bus drivers and working registers.

=

The latches are transparent: when the enable (E) is high,
the Q outputs follow the complements of the data (0) inputs. When the enable is low, the outputs latch at the levels
that were set up at the. 0 inputs.

=

The output buffers are controlled by a common signal (OC)
which places the outputs at high-impedance state when
it is taken high. The OC signal does not affect the internal
operations of the latches. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive caJjability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage. levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

FUNCTION TABLE

oc

Vee

10
10
20
20
30
3D

80
80

(Each Latch)
Inputs

70
70
6<:1'
60
50
50

40
40

E

0

Q

L
L
L

H
H
L
X

H
L
X
X

L
H

H

E

GNO

Output

OC

00
Z

LOGIC DIAGRAM
10

=8

20

3D

SAMSUNG SEMICONDUCTOR

40

50

60

70

80

320

KS54AHCT
KS74AHCT

533

Octal D-Type Transparent Latches
with 3-State Outputs

Absolute Maximum Ratings*·
Supply Voltage Range Vee, ....... -075V to +iv
DC Input Diode Current, irK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins . .. . . . . . .
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

·t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device· may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

Recommended Operating Conditions
Supply Voltage, Vee .............. 4.5V to 5:5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
KS74AHCT: ~40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, fr, tf . . . .
Max 500 ns

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

Vil

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or Vil
10=-20}olA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or Vil
10=20,.,A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

IrN

VIN=Vee or GND

±0.1

±1.0

±1.0

,.,A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±S.O

±10.0

,.,A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

,.,A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Alec

VIN=Vee or GND
10uT=0,.,A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0,.,A

=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

321

I

KS54AHCT
KS74AHCT

533

Octal 0-Type Transparent Latches
with 3-State Outputs

AC E~ECTRICAL CHARACTERISTICS
Characteristic

Symbol Condltlons t

(Input tr , tf<2 ns), AHCT533
KS54AHCT
KS74AHCT
T. ==25 0 C
T. = -40°C to +85°C T. == - Ssoc to + 12SoC
Unit
Vee-5.0V
Vee 5.0V:t 10%
Vee=S.OV:I: 10%

=

Typ
Propagation Delay,
Dto Q

a

Max

tpLH

16
21

19
25

tpHL

CL=50pF
CL=150pF

10
13

16
21

19
25

tPLH

C=50pF
CL=150pF

13
16

21
26

25
31

tpHL

CL=50pF
CL=150pF

13
16

21
26

25
31

CL=50pF
CL=150pF

11
14

18
23

22
28

CL=50pF
CL=150pF

11
14

18
23

22
28

13

18

22

13

18

22

tPZH
I---

Output Disable Time,
OC to any

f--

a

Min

10
13

Output Enable Time.
OC to any

a

Max

CL=50pF
CL=150pF

f--

Propagation Delay,
Eto

Min

RL=1 kO

tpZ\.
tpHZ
tpLZ

RL =1 kO
CL=50pF

ns

ns

ns

ns

Pulse Width,
E High

tw

9

15

18

ns

Setup Time,
D before EJ.

tsu

9

15

18

ns

Hold Time,
Dafter E J.

th

3

5

7

ns

Input
Capacitance

CIN

5

pF

Output
Capacitance

Cout

Output Disabled

10

pF

Power Dissipation
Capacitance· (per stage)

Cpo

OC=Vcc
OC=GND

5
30

-

pF
2

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

322

KS54AHCT
KS74AHCT

534.

Octal ·0-Type Flip-Flops
with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174AlS logic family
• low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL 24 mA@ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +~5°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape Be Reel), standard DIPs.

The '534 consists of 8 high-speed D-type edge-triggered
flip-flops coupled to 3-state output bufters with high drive
current capability. It can be used in implementing buffer .
registers, I/O ports, bidirectional bus driver and working
registers.

=

=

The flip-flops are edge-triggered on the positive transition
of the clock: the Q outputs are set to the complement of
the logic levels that were set up at the D inputs.
The output buffers are controlled by a common signal (OC)
which places the outputs in high-impedance state when it
is taken high. the OC signal does not affect the internal
operations of the flip-flops. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

oc
10
10
20
20
30
3D
40
40

GNO

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.
Vee

80
80
70
7Q

FUNCTION TABLE

60

(Each latch)

60
50

Output

Inputs

50

OC ClK D

ClK

L
L
L

H

t
t
L~
X

Q

H

L

L
X
X

H

00
Z

LOGIC DIAGRAM

10

c8SAMSUNG
Electronics

20

3D

40

50

60

70

80

323

KS54AHCT
KS74AliCT

534

Octal 0-Type· Flip-Flops
with 3-State Outputs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vee, ..... ~ . -0.5V to + 7V
DC Input Diode Current, "K
.
(VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) . . . . ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±70 mA
Continuous Current Through
Vee or GND pins ................ ±250 mA
Storage Temperature Range, Tstg . . . - 65 ° C to + 150 ° C
Power Dissipation Per Package, Pdt ...... 500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, fr, tf . . . . . . . . . Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

KS74AHCT
KS54AHCT
Ta = -40°C to +85 0 C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

O.B

0.8

V

Minimum High-Level
Output Voltage

VOH

Vee -0.1

Vee -0.1
3.7

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20,.,A
10=12mA
10=24mA

Maximum Input
Current

"N

Maximum 3-State
Leakage Current

loz

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

~Iee

VIN=VIH or VIL
10=-20,.,A
10=-6mA

Vee Vee -0.1
4.2
3.98

3.B4

4

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=Vee or GND

±0.1

±1.0

±1.0

,.,A

Output Enable
=VIH
VouT==Vee or GND

±0.5

±5.0

±10.0

,.,A

B.O

BO.O

160.0

,.,A

2.7

2.9

3.0

mA

VIN=Vee or GND
10uT=0,.,A
per input pin
V,=2.4V
other Inputs:
at Vee or GND
10uT=0,.,A

.=8~SUNG

0

324

KS54AHCT
KS74AHCT

534

Octal D-Type Flip-Flops
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Maximum Operating
Frequency
Propagation Delay,
CLK to any

a

Output Enable Time,
OC to any

a

Output Disable Time,
OC to any Q

Symbol Condltions t

(Input tr , t,402 ns), AHCT534
KS74AHCT
KS54AHCT
T.=25°C
T. = -40°C to +85°C T. = -55°C to + 125°C
Unit
Ycc= 5.0Y
Ycc=5.0Y%10%
Ycc=5.0Y% 10%
Typ

Min

35

Max

Min

Max

fmax

CL=50pF

50

tpLH

CL=50pF
CL=150pF

8
11

14
19

17
23

tpHL

CL=50pF
CL=150pF

8
11

14
19

17
23

tPZH

ICL=50PF
RL = 1 kP. CL = 1 50pF

11
14

18
23

22
28

ICL=50PF
CL =150pF

11
14

18
23

22
28

13

18

22

13

18

22

I------~

tPZL

~

RL=1kU
CL=50pF

tpLZ

MHz

30

ns

ns

ns

Pulse Width,
ClK High or low

tw

9

15

18

ns

Setup Time,
o before ClKt

tsu

9

14

17

ns

Hold Time,
Dafter ClKt

th

0

0

0

ns

Input Capacitance

t--.

5

pF

COUT

Output Disabled

10

pF

Cpo

OC=Vee
OC=GND

5
30

pF

CIN

-----

Ol'~put

Capacitance

Power Dissipation
Capacitance· (per stage)

t----

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fin.
t For AC switching test circuits and timing waveforms see section 2.

=8~SUNG

325

II

KS54AtiCT
KS74AHCT

54'01541
I·

Octa/Buffers and Line Drivers
with 3-State Qutputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOl 24 mA@ VOL = 0.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '540 and '541 are general purpose high-speed octal
line drivers/buffers with 3-state outputs. The inputs and
outputs are located on opposite sides of the 20-pin
package, thus improving circuit board density. The '540
provides inverted data and the '541 provides true data at
the outputs.

=

The three-state control gate is a 2-input NOR such that
if either <31 or <32 is high, all eight outputs are in the high
impedance state.
These devices provide speeds and drive capability
equivalent to their ALSTTLcounterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

LOGIC DIAGRAMS

PIN CONFIGURATION
(1)
81

Vee

A1

<32

A2

Y1

A3

Y2

A4

Y3

AS

Y4

A6

YS

A7

Y6

A8

Y7

GNO

Y8

'540

(1)

<31

131

82

<32

A2

Y1

A1

Y2

A2

(16)"

(16) Y3

(1S)

(1S)

Y4

Y4

(14)

(14)
AS

YS

YS

(13)
A6

Input

Output

G,

 Vcc +0.5V) .
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) . .
±70 mA
Continuous Current Through
Vce or GND pins
± 250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vce
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to + 125°C
Input Rise & Fall Times, tr , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vec==5V± 1 0% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/JA
10=-6mA

Vcc -0.1
3.84

Vce -0.1
3.7

V

Maximum Low-Level
Output Voltage

VbL

VIN=VIH or VIL
10=2O/J A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/J A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VOUT=VCC or GND

±0.5

±5.0

±10.0

/J A

Maximum Quiescent
Supply Current

Icc

VIN=Vee or GND
10uT=0/JA

8.0

80.0

160.0

/J A

c8SAMSUNG
Electronics

Vcc Vce -0.1
4.2
3.98
0

327

II

KS54AHCT
KS74~HCT

54'0'541
,.

Octal Buffers an,d Line Drivers"
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS

(Input tr •

tf~2 ns).

AHCT540. AHCT541

I

Characteristic

Symbol Conditions t

KS54AHCT
KS74AHCT
T. =25°C
T. = -40°C to +85°C T. = -55°C to +125°C
Unit
Vee = 5.0V
Vce=5.0V:!:10%
Vec=5.0V:!: 10%
Typ

Propagation Delay.
A to Y

-

Output Disable Time
G to Y

-

tPLH

12

tpHL

CL= 50pF
CL =150pF

7

12

RL=1kO
tPZL
tPHZ
tpLZ

Input Capacitance
Output Capacitance
Power Dissipation \
Capacitance * (per s~ge)

Max

7
10

tPZH

Output Enable Time.
Gto Y

Min

CL= 50pF
CL=150pF

17

12
15

20
25

24
30

CL=50pF
CL=50pF

12
15

20
25

24
30

10

14

1----"----

19

~------

14

--

f---------

19

ns

------

"--

---~~-.-.-

-- ns

23
- - - - , ns
23
--

5

-pF
pF

Caul

Output Disabled

10

Cpo

G=Vcc
G=GND

5
30

pF
2

.. Cpo determines the rio·load dynamic power dissipation: PO=CPD VCC fin.
t For AC switching test circuits and timing waveforms see'section 2.

=8~SUNG

14
20

17

CL= 50pF
CL =150pF

CIN

\

Max

14
20

RL =1 kO
CL=50pF

\\

Min

KS54AHCT
KS74AHCT

563

OctalD-Type Transparent·Latches
with 3-5tate Outputs .

FEATURES

DESCRIPTION

• 8 latches in a single package
• Full parallel access for loading
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-8tate outputs with high drive current
(IOL 24mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to + 85°C
KS54AHCT: -55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '563 consists of 8 high·speed Ootype latches coupled to 3-state output buffers with high drive current capability. It can be used in implementing buffer register, 1/0 ports,
bidirectional bus drivers and working registers.

=

=

PIN CONFIGURATION

oc

Vee

10

10

20
3D
40
50

20
30
40

60
70
80
GNO

50
60
70
80

E

The latches are transparent: when the enable (E) is high,
the Q outputs follow complements of the data (0) inputs.
When the enable is low, the outputs latch at the leveis that
were set up at the 0 inputs.
The output buffers are controlled by a common signal (OG)
which places the outputs at a high-impedance stage when
it is taken high. The OC Signal does not affect the internal
operations of the latches. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

FUNCTION TABLE
(Each latch)
Output

Inputs
OC

E

b

L
L
L

H
H

H

X

H
L
X
X

L

Q

L

H

00
Z

LOGIC DIAGRAM

=8SAMSUNG
8ectronics

329

I

KS'54AHCT 5B3~~';"\;
KS74AHCT
. <:"':i!

Octal D-Type Transparent Latches
with 3-State Outputs

Absolute Maximum Ratings*
Supply Voltag~ Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, hK
(V, < -:-'0.5V or VI > Vcc +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-O.5V < Vo < Vcc +0.5V)
±70 mA
Continuous Current Througtl
Vce or GND pins
. . . . . . .. ± 250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vcc
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

_.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

(Vcc=5V± 10% Unless Otherwise Specified)

Ta =25°C

Ta

KS74AHCT
KS54AHCT
+85°C Ta = -55°C to +125°C Unit

= -40°C to

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/AA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O /JA
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

j.lA

Maximum 3-State
Leakage Current

102

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

/AA

Maximum Quiescent
Supply Current

Icc

8,0

80.0

160.0

/AA

2.7

2.9

3.0

mA

I

Additional Worst
Case Supply
Current

t.lee

VIN=Vee or GND
10UT=0/JA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10UT=0/AA

.c8SAMSUNG
Electronics

Vee Vee -0.1
3.98
4.2
0

330

KS54AHCT
KS74AHCT

563

Octal 0-Type Tra'(lsparent Latches
with 3-8tate Outputs

AC ELECTRICAL CHARACTERISTICS
Characterlatlc

Symbol

Condltlona t

(Input tr , tf~2 ns), AHCT563
T. =25 0 C
T.
Ycc=5.OY
Typ

Min

Max

Min

Max

CL= 50pF
tPLH CL =150pF

12
15

18
23

22
28

tpHL

CL= 50pF
CL =150pF

12
15

18
23

22
28

tpLH

C= 50pF
CL=150pF

14
17

22
27

27
33

tpHL

CL= 50pF
CL =150pF

14
17

22
27

27
33

Output Enable Time,
OC to any

CL= 50pF
tPZH
CL=150pF
r------ RL=1kO
CL= 50pF
tPZL
CL=150pF

11
14

18
23

22
28

11
14

22
28

Output Disable Time,
OC to any

tpHZ
r------ RL=1kO

13

18
23
19

22

13

19

22

Propagation Delay,
D to

a

I

KS54AHCT
KS74AHCT
+85°C T.=-55~Cto +125°C
Unit
Ycc .. 5.OY:t 10%
Ycc=5.0Y:t10%

= -40°C to

ProPa.9ation Delay,
Eto

a

a

a

tpLZ

CL=50pF

ns

ns

ns

ns

Pulse Width,
E High

tw

9

15

18

ns

Setup Time,
D before E+

tsu

6

10

10

ns

Hold Time,
Dafter E +

th

3

5

7

ns

Input

Capacita~ce

Output Capacitance
Power Dissipation
Capacitance· (per stage)

5

pF

COUT

Output Disabled

10

pF

Cpo

OC=Vcc
OC=GND

5
30

pF

CIN

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin,
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

331

II

Octal D-Type Flip-Flops
with 3-Sta'te Outputs'
FEATURES

DESCRIPTION

• Function, pilH)ut, speed and drive compatibility with
54174AlS logic family
• low power consumption charaCteristic of CMOS
• 3-State outputs with high drive current
(IOL 24mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C + 85°C
KS54HACT: - 55°C + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '564 consists of 8 high-speed Ootype edge-triggered
flip-flops coupled to 3-state output buffers with high drive
current capability. It can be used in implementing buffer
registers, I/O ports, bidirectional bus driver and working
registers.

=

=

The flip-flops are edge-triggered: on the positive transition
of the clock, the Q outputs are set to the complement of
the logiC levels that were set up at the 0 inputs.
The output buffers are controlled by a common signal (OC)
which places the outputs at high impedance stat when
it is taken high. The OC signal does not affect the internal
operations of the flip-flops. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maint Vcc +0.5V) . . . .. ±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vcc +0.5V) ......... ±70 mA
Continuous Current Through
Vcc or GND pins ................ ±250 mA
Storage Temperature Range, T5 tg ..• -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mWfOC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vcc . . . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages·. VIN. VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times. tr • tf ......... Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the de~ice may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vec=5V± 1 0% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20,..A
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20,..A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

,..A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

p.A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

,..A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

h.lcc

VIN=Vee or GND
10uT=0,..A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10uT=0,..A

=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

333

I

KSS4AHCT
KS74AHCT

86'

Octal D-Type Flip-FlOps
with 3-State Outputs'

AC ELECTRICAL CHARACTERISTICS
Ch.r.cterlatlc

Maximum Operating
Frequency
Propagation Delay,
ClK to any Q

Output Enable Time,
DC to any

a

Output Disable Time,
oc to any

a

Symbol

Condltlon. t

(Input tr , tt<2 ns), AHCT564
KS74AHCT
kS54AHCT
T. _25°C
T. - -40°C to +85°C T. _ -55°C to +125°C
Unit
Vcc-5.0V
Vcc-5.0V:t 10%
Vcc-5.0V:i:10%
Typ

Min

35

Mex

Min

Mu

fmax

CL= 50pF

50

tPLH

CL= 50pF
CL=150pF

8
11

14
19

17
23

tPHL

CL= 50pF
CL=150pF

8
11

14
19

17
23

CL= 50pF
CL=150pF

11
14

18
23

22
28

CL= 50pF
CL=150pF

11
14

22
28

13

18
23
19

13

19

28

tPZH
I---

RL=1kO

tPZL

~
tpLZ

RL=1kO
CL=50pF

MHz

30

22

ns

ns

ns

Pulse Width,
ClK High or low

tw

9

15

18

ns

Setup Time,
D before ClKt

tau

9

14

17

ns

Hold Time,
Dafter ClKt

th

a

0

0

ns

Input Capacitance
Output Capacitance
Power Dissipation
Capacitance * (per stage)

5

pF

Output Disabled

10

pF

OC=Vcc
OC=GND

5
30

pF

CIN
COUT
Cpo

* Cpo determines the no·load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics
.

334

KS54AHCT It:
KS74AHCT ~

73

Octal D- Type Trilpsparent Latches
with 3-State Outputs

FEATURES

DESCRIPTION

• 8 latches in a single package
• Full parallel access for loading
• Function, pin-out, speed and drive compability with
54174ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface direclty with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to + 85°C
KS54HACT: -40°C to + 125°C
• Package options include "small outline" packages
(Available Tape & ~eel), standard DIPs.

The '573 consists of 8 high-speed O-type latches coupled to 3-state output buffers with high drive current capability. It can be used in implementing bufer registers, flO ports,
bidirectional bus drivers and working registers.

=

=

The latches are transparent: when the enable E is high,
the outputs follow the data (0) inputs. When the enable
is low, the outputs latch at the levels that were set up at
the 0 inputs.

a

The output buffers are controlled by a common signal (OC)
which places the outputs at a high-impedance state when
it is taken high. The OC signal does not affect the internal
operations of the latches. Old data can be retained or new
data can be entered while outputs are off. .
There devices provide speeds and drive capability
equivalent ot their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

PIN CONFIGURATION

6C

FUNCTION TABLE

Vee

10
20
3D
40

10
20
30
40

50
60
70
80

50
6Q
70
80

GNo

E

(Each Latch)
Inputs

Output

OC

E

D

Q

L
L
L
H

H
H
L
X

H
L
X
X

H
L

00
Z

LOGIC DIAGRAM

10

c8SAMSUNG
Electronics

20

3Q

40

50

60

70

80

335

I

KS54AH'CT 573~
KS74AHCT

Octal 0-Type TrIIIftIpII:rent ,Latches
with 3-State Outputs

Absolute Maximum Ratings·
Supply Voltage Range Vee, . . . . . . . -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) . . . . ±20 mA
90ntinuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±70 mA
Continuous Current Through
Vee or GND pins ................ ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . ... . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

• Absolute Maximum Ratings are those values beyond
which. permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 1 0% Unless Otherwise SpeCified)

Ta =25°C

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High.lLevel
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20,.,A
10=-6mA

Vec -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10 = 20,.,A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

,.,A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

,.,A

Maximum Quiescent
Supply Current

lee

8.0

80.0

160.0

,.,A

2.7

2.9

3.0

mA

-

Additional Worst
Case Supply
CurFent

.6.lee

VIN=Vee or GND
10UT=0,.,A
per input pin
VI=2.4V
other Inputs:
at Vccor GND
10UT=0,.,A

=8~SUNG

Vec Vee -0.1
3.98
4.2
0

336

KS54AHCT
KS74AHCT

573

Octal D-Type Transparent Latches
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input tr tf~2 ns), AHCT573
KS74AHCT
KS54AHCT
Ta =25°C
Ta = -40°C to +85°C Ta =-55°Cto +125°C
Unit
Vee=5.0V
Vee = 5.0V ~ 10%
Vee=5.0V~ 10% __
Min

Typ

Propagation Delay,
D to Q

Propagation Delay,
Eto Q

Output Enable Time
OC to any Q

Pulse Width,
E High

Min

Max

tpLH

9
12

16
19

20
23

tpHL

CL= 50pF
CL=150pF

9
12

16
19

20
23

tpLH

C=50pF
CL=150pF

12
15

20
25

24
30

tpHL

CL= 50pF
CL =150pF

12
15

20
25

24
30

CL= 50pF
CL =150pF

11
14

18
23

22
28

CL= 50pF
CL=150pF

11
14

18
23

13

19

tPZH
f---

RL=1k!2

tPZL
Output Disable Time
OC to any Q

Max

CL= 50pF
CL=150pF

tpHZ

~

tpLZ

RL =1 kG
CL =50pF

--

ns

ns
22
.28
- - - -~
22
ns
22

19

13

ns

tw

9

15

18

ns

Setup Time,
D before E ~

tsu

6

10

12

ns

Hold Time,
D after E~

th

4

7

9

ns

5

pF

Output Capacitance

CouT

Output Disabled

10

pF

Power Dissipation
Capacitance· (per stage)

Cpo

OC=Vcc
OC=GND

5
30

Input Capacitance

CIN

- - f-'---

pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC fin.
2

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

337

II

KS54Al-iCT
KS74AHCT

574
.

Octal 0-Type Flip-Flops
with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pln-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOl :; 24 mA @ VOL O.5V) for direct bus interface'
• Inputs and outputs Interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '574 consists of 8 high-speed Ootype edge-triggered
flip-flops coupled to 3-state output buffers with high drive
current capability. It can be used in implementing buffer
registers. I/O ports. bidirectional bus drivers and working
registers.

=

The flip-flops are edge-triggered on the positive transition of the clock. The 0 outputs are set to the logic levels
that were set up at the 0 inputs.
The output buffers are controlled by a common Signal (OC)
which places the outputs at a high-impedance state when
it is taken high. The OC signal does not affect the internal'
operations of the flip-flops. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL. NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to V cc and
ground.

PIN CONFIGURATION

FUNCTION TABLE
(Each Flip-Flop)

oc

Vee

10
20
30
40

20
30
40
SO

SO
60
70
80
GNO

Output

Inputs

10

60
70
SO

OC

CLK

D

Q

L
L
L
H

t
t

H
L
X
X

H
L

L
X

00
Z

ClK

LOGIC DIAGRAM
10

c8SAMSUNG
Electronics

20

30

40

SO

60

70

80

10

20

30

40

SO

60

70

338

KS54AHCT
KS74AHCT

574

Octal D-Type Flip-Flops
with 3-State Outputs

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 1,K
(V, < -0.5V or V, > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins.
±250 mA
Storage Temperature Range, T519 ... -65"C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N); -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages * , Y,N, VOUT
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may oe,eur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

V,H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V,L

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

V'N=V'H or V,L
10=-20j..lA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

V,N=V,H or V,L
10= 2O /J A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

j..IA

Maximum 3-State
Leakage Current

loz

Output Enable
=V,H
VouT=Vee or GND

±0.5

±5.0

±10.0

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

blee

V'N=Vee or GND
10uT=0/JA
per input pin
V,=2.4V
other Inputs:
at Vee or GND
10uT=Oj..lA

=8SAMSUNG
Electronics

Vee Vee -0.1
3.98
4.2
0

/J A
--

8.0

80.0

160.0

/J A

2.7

2.9

3.0

mA

339

II

KSS4AHCT
KS74AHCT

574

Octal 0-Type Flip-Flops
with 3-State Outputs·

AC ELECTRICAL CHARACTERISTICS
Characteristic

Maximum Operating
Frequency
Propagation Delay,
ClK to any

a

Output Enable Time.
OC to any

a

Output Disable Time.
OC to any

a

Symbol Condltlons t

(Input tr • tf~2 ns). AHCT574

KS74AHCT
- KS54AHCT
IT. =25 0 C
T. = -40°C to +85°C T. = -55°C to +125°C
Unit
Vee = 5.0V
Vce=5.0V±10%
Vce=5.0V± 10%
Typ

Min

35

Max

Min

Max

fmax

CL= 50pF

50

tpLH

CL= 50pF
CL=150pF

8
11

14
19

17
23

tpHL

CL= 50pF
CL=150pF

8
11

14
19

17
23

CL= 50pF
CL=150pF

11
14

18
23

22
28

CL= 50pF
CL=150pF

11
14

18
23

22
28

tPZH
r------- RL=1

kO

tPZL
tPHZ

r-------

tpLZ

RL=1 kO
CL =50pF

30

MHz

13

18

22

13

18

22

ns

ns

ns

Pulse Width,
ClK High or Low

tw

9

15

18

ns

Setup Time.
D before ClKt

tsu

9

14

17

ns

Hold Time,
Dafter CLKt

th

-3

0

0

ns

Input Capacitance

5

pF

Output Capacitance

COUT

Output Disabled

10

pF

Power Dissipation
Capacitance* (per stage)

Cpo

OC=Vcc
OC=GND

5
30

CIN

pF
2

* Cpo determines the no-load dynamic power pissipation: Po=Cpo VCC fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

340

KS54AHCT
KS74AHCT

59011591
/.

8-Bit Binary Counters wi(h
Output Registers

FEATURES

DESCRIPTION

• Choice of 3-State ('590) and Open-Drain ('591) Outputs
• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL 24 rnA @ VOL 0.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices each consist of an a-bit binary counter which
feeds an a-bit register. The counter is incremented on the
rising edge of the CCK input, provided that clock enable,
CCKEN, is low. When the counter increments to the all
ones condition, ripple carry out, RCO, will go low. This
enables either synchronous cascading of the counters by
connecting the RCO of the first stage to the CCKEN of
the second, or clocking both circuits in parallel. Ripple
cascading is accomplished by connecting the RCO of the
first to the CCK of the second stage. A clear input is also
provided which will reset the counter to the all zeros state.

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

=

=

Os

Vee
OA

The output register is loaded with the contents of the
counter on the rising edge of the register clock, RCK. The
outputs of this register feed the outputs which are enabled when the enable input, G, is taken low. This enables
connection of this part to a system bus. The Q outputs of
the '590 are 3-State and those for '591 are Open-drain.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

G
RCK
CCKEN
CCK
CCLR
RCO

FUNCTION TABLE
INPUTS

FUNCTION

G

RCK

CCLR'

CCKEN

H

X

X

X

X

L

X

X

X

X

Q Outputs enable

X

X

X

Counter data is stored into register

X

X

X

Register state is not changed

X

Coun'ter clear

S
L

L
L

CCK

L

X

L

X

L

X

H

L

S

L

X

H

L

L

L

X

H

H

X

Q Outputs disable

Advance one count
No count
No count

X: Don't care

-------------------------------

RCO =

QA'· Qs' Qc' • QD' QE' • QF' QG' • QH'
(QA'

("\J

QH': Internal outputs of the counter)

c8SAMSUNG
Electronics

341

II

KS54AHCT
KS74AHCT

5901/591
/1

8-Bit Binary Counters with
Output Registers

LOGIC DIAGRAM

=8SAMSUNG
• Electronics

342

KS54AHCT
KS74AHCT

5901/591
II

8-Bit Binary Counters with
Output Registers

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
±250 mA
Vee or GND pins
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vec
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vce or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta = 25°C
f---,-'

Typ

KS74AHCT
KS54AHCT
Ta =-40°Cto +85°C,Ta =-55°Cto +125°C Unit:
I

!

Guaranteed Limits

I

I

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

Vee -0.1
3.84

Vee -0.1
3.7

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Minimum High-Level
Output Voltage
(All '590 Outputs and
~91 RCO Output)

V

VOH

VIN=VIH or VIL
10=-20JAA
10=-6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20J.lA
lo=12mA
10=24mA

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

J.lA

Maximum Output
Leakage Current

loz

Output Enable
=VIH
VouT=Vee

±0.5

±5.0

±10.0

J.lA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

JAA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Alcc

VIN=Vee or GND
10uT=OJAA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10uT=OJAA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98

0

V

343

II

KS54AH,CT
KS74AHCT

5901591
I·

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

8-Bit Binary Counters with
Output Registers
(Input tr , tf~2 ns), AHCT590
54AHCT
54/74ACHT
KS74AHCT
Ta=25°C T.= -40°C to +85°C T.=-55°Cto +125°C
Unit
Vcc=5V±10%
Vcc=5.0V± 10%
Vcc=5V
Typical

Min

f max

50

30

Propagation Delay,
CCKt to RCO

~

15

25

29

15

25

29

Propagation Delay,
CCLR-I- to RCO

tpHL

17

28

33

Propagation Delay,
RCKt to 0

tpLH
r--tpHL

10

16

19

10

16

19

Output Enable Time,
<3-1- to Q

r------

13

18

22

13

18

22

Output Disable Time,
Gt to 0

r------

13

18

22

13

18

22

Maximum Clock Frequency

Pulse
Duration

Setup Time

tpHL

CL=50pF

tPZH
tPZL

tpHZ

CL=50pF
RL=1K!l

tpLZ

CCK or RCK
High or Low

Max

Min

10

15

20

CCLR Low

10

15

20

CCKEN-I- before
CCKt

10

15

20

6

10

10

15

20

25

tw

CCLRt before
CCKt

tsu

CCKt to
RCKttt

Input Capacitance
Output Capacitance
(0 Outputs)

CIN
COUT Output Disabled

Power Dissipation Capacitance *

Max

25

ns
ns
ns
ns
ns
ns

ns

ns

5

pF

10

pF

CPD

pF

* CPD determines the no-load dynamic power dissipation: PD=CPD VCC 2 fin.

t

For AC switching test circuits and timing waveforms see section 2.

tt This setup time ensures the register will see stable data from the counter outputs. The clocks may be tied together in
which case the register state will be one clock pulse behind the counter.

c8SAMSUNG
Electronics

344

KS54AHCT
KS74AHCT

5901591
1.

8-Bit Binary Counters with
Output Registers

AC ELECTRICAL CHARACTERISTICS

(Input t r , tf~2 ns), AHCT591

i

54AHCT
54/74ACHT
KS74AHCT
Ta=-25°C Ta = -40°C to +85°C Ta = -55°C to +125°C
Unit
Vcc=5.0V:t: 10%
Vcc=5V:t:10%
Vcc=5V

Characteristic

Symbol Conditions t

Typical

Min

Maximum Clock Frequency

f max

50

30

Propagation Delay,
CCKt to RCO

tpLH

15

25

29

tpHL

15

25

29

17

28

33

-

Propagation Delay,
CCLR.(. to RCO
Propagation Delay,
RCKt to Q

tpHL

Propagation Delay,
Gt to'Q

I

Max

25

MHz

CCK or RCK
High or Low

ns

18

31

37

10

16

19

tpHL

14

20

24

ns

tpLH

14

20

24

ns

10

15

20

CClR Low

10

15

20

CCKEN.(. Low to
CCKt

10

15

20

6

10

10

15

20

25

CClRt High to
CCKt

ns

tpHL

tpLH

Propagation Delay,

Setup Time

Min

~

<3.(. to Q

Pulse
Duration

CL =50pF
RL=1kO

Max

tw

tsu

CCKt to
RCKttt

Input Capacitance

C IN

Power Dissipation Capacitance *

Cpo

5

ns

ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin_
t

tt

For ACswitching test circuits and timing waveforms see section 2.
This setup time ensures the register will see stable data from the counter outputs. The clocks may be tied together in
which case the register state will be one clock pulse behind the counter.

c8SAMSUNG
Electronics

345

I

KSS4AHCI

KS74AHCT

592/593

8"'!Bit Binary Counters with
IhputRegisters
.

FEATURES

DESCRIPTION

• Parallel Register Inputs ('592)
• Parallel 3-State 110: Register Inputs/Counter Outputs
('593)
• Counter Has Direct Overriding Load and Clear
•
Function, pin-out, speed and drive compatibility with
54/74ALS logic family
Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(Iol 24 mA @ VOL O.5V) for direct bus interface
• lliputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '592 and '593 both contain an 8-bit register which feeds
an a-bit binary counter. The counter is incremented on the
rising edge of the CCK input, provided that clock enable,
CCKEN, is low. When the counter increments to the all
ones condition, ripple carry out, RCa, will go low. This
enables either synchronous cascading of the counters by
connecting the RCa or the first stage to the CCKEN of
the second, or clocking both circuits in parallel. Ripple
cascading is accomplished by connecting the RCa of the
first to the CCK of the second stage. A clear input is also
provided which will reset the counter to the all zeros state.

=

=

PIN CONFIGURATIONS
'593

'592

S

Vc~

A/OA

C

A

SlOB

G

C/O e

G
RCKEN

0

RCK
CCKEN

O/OD
E/O~

RCK

G

CCK

FlO,

H

CCLR

G/OG

CCKEN
CCKEN

H/OH

RCa

GNO

The '592 differs from the '593 in that the latter device has
bidirectional I input/output pins. The 3-state outputs of the
counter can be enabled and are active when enable input,
G, is taken low and input G is taken high. The outputs of
the counter then appear on the register inputs. This enables
connection of this part to a system bus. The '593 also has
a second clock enable pin, CCKEN, which is active high
and it also has an active low register clock enable, RCKEN.

Vee

F

E

The input register is loaded on the rising edge of the register
clock, RCK. The outputs of this register feed the counter.
The counter is loaded with the register's contents when
the clock load, CLOAD, input is taken low.

CCK
CCLR

CLOAO
GNO

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and qMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

RCa

FUNCTION TABLE
INPUTS '(592)
RCK

FUNCTION

CLOAD

CCLR

CCKEN

CCK

X

L

H

X

X

Register data is loaded into counter

X

H

L

X

X

Counter clear

S

H

H

X

X

The data of a thru H inputs is stored into
register

L

H

H

X

X

Register state is not changed

X

H

H

L

X

H

H

L

S
L

X

H

H

H

X

Counter advances the count
No count
No count

X: Don't car.::e_ _ _ _ _ _ _ _ _ _ _ _ _ __
RCa

QA'· Qs' Qc' • Qo' QE' • QF' QG' • QH'
(QA'rv QH': Internal outputs of the counter)

c8 !e!"SUNG

346

KS54AHCT
KS74AHCT

592/593
/.

8-Bit Binary Counters with
Input Registers

LOGIC DIAGRAMS
'592

CCiJi

(10)

~!~

~

CCK
(11)

CLOAD
RCK

*H>'

A

,..

r--

-

-v

;--

I

(13)

r--

(15)

D

---

r---<= I>C

-

(1)

B

0

~

c

>C

D

----

r---

(3)

D

r-c

-

~C

-

(4)

E

D

~ >C

-

F

D

----

r-< ~c
D

r-c ~c

~

r--

(7)

H

D

L..-.(:

I>C
~

c8SAMSUNG
Electronics

.r.

o

~~ R

L r-<

>T

--

~M
r'"""":

0

I

~

~

""

o

~ ~T

r---<:

L

1-.

---R

r~

0

r--JO
D LI-

~~

~T
R 0

-

,., o

L l-

----

~R

0

~
JO

~~
~

~~

,....t;::

"'--

LO ~T

roo--

(6)

G

L I-

10...-

r---

(5)

D

~ R a

r---

(2)

~ ~c

o

~
~

~ ~T

o

~

R

L I-

0

L..--..

r--D
L I-

I>T

R

a

"'--

ILC~T
..

r~

M
M
.

n

~~

1

-Ct:~

7""71-

~R

---a

347

1593

KS54AH.:CT 592~
KS74AHCT
I~

8~l3lt Binary Counters with"

Input Registers

LOGIC DIAGRAMS (Continued)
'593
(19)

G

G

(18)
(12)

CCLR

:~I~

CCKEN

CCKEN

(11)

(14)

CCK (13)

~
~
RCK

AlaA

(9)

IS SIMILAR IN DETAIL

0-:=-

TO THAT SHOWN FOA
CCK

-

~

(1"

J...G

(16)
(1)

I
1 '";;""""'
~

f>

Cl

~

.

(2)

BIO 8

..

C1

l~
~ r>

Cl

I.......,-

lr;-

(4)

0/00

~

-

~A

"""

~

(3)

o~t-<

~~T

l~
~ I>

ciac

R

GATING FOR RCK

~ po

C1

a

r-D

L t-

L

I ~t4>T

Cl

----

~A

'---'"

Jr;-

(6)

FI OF

-<:p> C1
I.....--...
GIOG

[r:-

(7)

I ~t-

'
4
--

'Lap> T
~A

j

a

r-;;-;: r-

~f>T

--- ---

~ PCl

HI OH

a

(8)
..oL

....

l~
L-....o po

~A

I

a

P-J
....

1

...... f -

~

~
...I

~';::::f

¢-

~~*
a

L-f-

......

1
=J

LCpT

Cl

'--

c8SAMSUNG
Electronics

~

~

'---c

--R

348

KS54AHCT
KS74AHCT

592'593
,.

8-Bit Binary Counters with
Input Registers

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Va < -0.5V or Va> Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Va < Vee +0.5V) ........ ±70 rnA
Continuous Current Through
Vee or GND pins
±250 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages·, VIN, Your .. OV to Vec
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C~ +125°C
Input Rise & Fall Times, tr , tf
.... Max 500 ns

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability ..

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V± 10% Unless Otherwise Specified)

Ta=2SoC
Typ

KS74AHCT
KS54AHCT
Ta= -40°C to +8S o C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

. VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN = VIH or VIL
lo=- 2OI-lA
lo=-6mA

Vee -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=201-lA
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

iJ A

Maximum 3-State
.Leakage Current

loz

Output Enable
=VIH
Vour=Vcc or GND

±0.5

±5.0

±10.0

I-IA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

I-IA

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

.6. Icc

VIN=VCC or GND
lour=OJ.tA
per input pin
VI=2.4V
other Inputs:
at Vec or GND
lour=OI-lA

=8SAMSUNG
Electronics

Vee Vec -0.1
4.2
3.98
0

349

I

B.-Bit Binary Counters with
Input Registers
AC ELECTRICAL CHARACTERISTICS
I

Characteristic

Symbol

KS74AHCT
KS54AHCT
Ta =25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=S.OV
Vcc=5.0V± 10%
Vcc.= 5.0V:t 10%
Typ

Min

f max

50

30

~

15

25

29

15

25

29

Maximum Clock Frequency
Propagation Delay,
CCKt to RCO

Conditions t

(Input tr , tf~2 ns), AHCT592

tpHL

Propagation Delay,

Max

Min

Max

MHz

25

15

25

29

tpHL

15

25

29

Propagation Delay.
CCLR+ to RCO

tpHL

15

25

29

Propagation Delay.
RCKt to RCO

~

18

30

36

18

30

36

CLOAD+ to RCO

Pulse
Width

Setup Time

tpLH

I---

tpHL

CCK or RCK
High or Low

CL=50pF

CL=50pF
CLOAD=GND

10

15

20

10

15

20

CLOAD Low

10

15

20

CCKEN+ before
CCKt

10

15

20

6

10

10

RCKt before
CLOADtt

10

15

20

Data A·Ht before
RCKt

10

15

20

-3

0

0

CCLR Low

CCLRt before
CCKt

Hold Time

tw

tsu

th

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

5

ns

ns
ns
ns

ns

ns

ns
pF
pF

* Cpo determines the no·load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switchirtg test circuits and timing waveforms see section 2.

tt The RCKt to

CLOAD setup time ensures that the counter will see stable data from the register output.

c8SAMSUNG
Electronics

350

KS54AHCT
KS74AHCT

5921593
I~

AC ELECTRICAL CHARACTERISTICS
Symbol Conditions t

Characteristic

Maximum Clock Frequency

f max

tPLH

Propagation Delay,
CCKt to 0

I-----

tpHL
tpLH

Propagation Delay,
CCKt to ReO

I-----

Propagation Delay,
CLOAD+ to 0

-

tpHL

Propagation Delay,
to RCO

-

Propagation Delay,
RCKt to RCO

-

CLOAD~

Pulse
Width

CL=50pF
CL=150pF

15
18

25
30

29
35

15

25

29

15

25

29

CL=50pF

29
35

tpHL

CL=50pF
CL=150pF

15
18

25
30

29
35

15

25

29

15

25

29
36

tpLH

CL=50pF

30

tpHL

CL=50pF
CL=150pF

15
18

25
30

29
35

ns

tpLH

CL=50pF

15

25

29

ns

CL=50pF
CL =150pF

13
16

20
25

24
30

CL=50pF
CL=150pF

13
16

20
25

24
30

13

20

24

13

20

24

RL=1kO

tPHZ

RL=1 kO
CL=50pF

10

15

20

10

15

20

10

15

20

6

10

10

RCKt before
CLOADtt

10

15

20

Data A-H
before RCKt

10

15

20

-3

0

0

tw

CLOAD Low
before

CCKt
to

RCKt

Hold Time
Input Capacitance

ns

30

20

before

ns

18

15

CCLR~

ns

18

10

CCKt

ns

CL=50pF
CLOAD=GND

tPLH

20

RCKEN~

MHz
29
35

15

CCLR Low

Max

25

10

CCKEN~

Setup
Time

Min

25
30

tpLz

CCK or RCK
High or Low

Max

25
30

tPZL

-

30

15
18

tPZH

Disable Time,

Min

50

15
18

I-----

G~ or Gt to·O

Typ

CL=50pF
CL =150pF

CCLRt to 0

Enable Time,
Gt or G~ to 0

KS54AHCT
KS74AHCT
T. =25°C
T.= -40°C to +85°C T.=-55°C to +125°C
Unit
Vcc=5.0V
Vee = 5.0V::t 10%
Vce=5.0V::t 10%

tpLH

tpHL

Propagation Delay,
CCLR~ to RCO

(Input tr , tf~2 ns), AHCT593

CL=50pF
CL =150pF

tPHL

Propagation Delay,

8-Bit Binary Counters with
Input Registers'

tsu

th
CIN

Output Capacitance

COUT Output Disabled

Power Dissipation
Capacitance *

Cpo

ns

ns

ns

ns

ns

ns

5

pF

10

pF
pF
2

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC fin.
t For AC switching test circuits and timing ~aveforms see section 2.

t t The RCKt to CLOAD setup time ensures that the counter will see stable data from the register output.

c8SAMSUNG
Electronics

351

I

KS54A'HCT
KS74AHCT

5951596
II

8-Bit Shift· Registers with
.Output Latches

FEATURES

DESCRIPTION

• 8-Bit Serial-In, Parallel-Out Shift Registers With
Storage.
• Choice of 3-State ('595) or Open-Drain ('596) Parallel
Outputs.
• Shift Register Has Direct Clear.
• Function; pin-out, speed and drive compatibility with
5417 4ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL = 24 mA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices each contain an 8-bit serial-in, parallel-out
shift register that feeds an 8-bit D-type storage register.
The storage register has parallel 3-state ('595) or opendrain ('596) outputs. Separate clocks are provided for
both the shift register and the storage register. The shift
register has a direct-overriding clear, serial input, and serial
output pins for cascading.
Both the shift register and storage register clocks are
positive-edge triggered. If the user wishes to connect both
clocks together, the shift register state will always be one
clock pulse ahead of the storage register.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

Vee
QA

SER

G
RCK
SRCK
SRCLR

Q'H

FUNCTION TABLE
INPUTS

FUNCTION

SER

SRCK

SRCLR

RCK

G

X

X

X

X

H

X

X

X

X

L

QA thru QH outputs enable

X

X

L

X

X

Shift register is cleared.

H

X

X

First stage of S.R: becomes "L". Other stages store
the data of previous stage, respectively.

H

X

X

First stage of S.R. becomes "H". Other stages store
the data of previous stage, respectively.

X

L

J

H

~

X

L

H

X

X

X

X

X

X

S
L

QA thru QH outputs disable

X

State of S.R. is not changed.

X

S.R. data is stored into storage register.

X

Storage register state is not changed,

X: DON'T CARE

c8SAMSUNG
Electronics

352

KS54AHCT
KS74AHCT

595'596,."
,.

8-Bit Shi,I! MMf,M,rs with
Output L.:f\J

LOGIC DIAGRAM
'595 or '596

(15)

c8SAMSUNG
Electronics

Q.

(1)

0

(2)

Oc

(3)

0

(4)

OE

(5)

OF

(9)

0,

0

II

0

353

B-Bit Shift Registers with
Output Latches
Absolute Maximum Ratings·
Supply Voltage Range Vee, .,. . . . . -0.5V to + 7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . . . .
±70 mA
Continuous Current Through
Vee or GND pins
.......... ±250 mA
Storage Temperature Range, Tsig . . . -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC fro~ 65°C to 85°C

* 'Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

Recommended Operating Conditions
Supply Voltage, Vee ............ , . 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & FaU Times, tr , tf . . . . . . . . . Max 500 ns

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS54AHCT
KS74AHCT
Ta = -40°C to +85°C Ta= - 55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Minimum High-Level
Output Voltage
(All '595 Outputs and
'596 QH' Output)

VOH

VIN=VIH or VIL
10=-20",A
10= -6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20",A
10=12mA
10=24mA

Maximum Inpur
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vec or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Ico.

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

fllcc

VIN=Vec or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
IOUT=O",A

c8SAMSUNG
Electronics
.

Vee Vee -0.1
4.2
3.98

0

354

KS54AHCT
KS74AHCT

5951596
I,

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Condltlons l

8-Bit Shift Registers with
Output Latches
(Input tr , tf~2 ns), AHCT595, AHCT596
KS74AHCT
KS54AHCT
T.=25°C
T. = -40°C to +85°C T. = - 55°C to + 125°C
Unit
Vcc=S.ov
Vcc=5.0V:t 10%
Vcc=5.0V:t10%
Typ

Propagation Delay,
SRCKt to Q'H
Propagation Delay,
RCKt to QA thru QH

Output Enable Time,
G+ to QA thru QH
('595 only)
Output Disable Time,
Gt to QA thru QH
('595 only)

~ CL=50pF
tPHl

Cl=50pF
tpLH
Cl=150pF
r---Cl=50pF
tPHl
CL=150pF
CL=50pF
CL =150pF

tPZH
r---- RL=1 kG
CL=50pF
tpzL
CL =150pF
RL= 1kG
~ CL=50pF
tpLZ

20
20

11
14

22

27

21

25

11
14

17
22

20
26

14
17

20
25

24
30

14

17

20
25

24
30

14

20

24

14

20

24

20
25

24
30

ns

20
25

24
30

ns

14

Propagation Delay,
G+ to QA thru QH
('596 only)

tpHL

CL=50pF
CL=150pF

14

SRCLR Low

Setup
Time

tw

SRCLRt to
SRCKt
SER to SRCKt

tsu

SRCKt to
RCKtt
Hold Time,
Input Capacitance

Max

17

CL=50pF
CL=150pF

Width

Min

15

tpLH

SRCK or RCK

Max
17

Propagation Delay,
Gt to QA thru QH
('596 only)

Pulse

Min

15

17

17

-

ns
-

-

10

15

20

10

1:

20

6

10

12

10

15

20

15

20

25

0

0

ns

ns

ns

ns

ns

-

th
CIN

Output Capacitance

COUT Output Disabled

Power Dissipation
Capacitance *

Cpo

-3

I---

ns

5

pF

10

pF
pF
2

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC fin.
t For AC switching test circuits and timing waveforms see section 2.

Note: The RCKt to CCKt setup time ensures that the counter will see stable data from the register output.

c8SAMSUNG
Electronics

355

II

8-Bit Shift-Registers with
Input Latches

FEATURES

DESCRIPTION

• 8-Blt Parallel Storage Register Inputs
• shift Register has Direct Overiding Load and Clear.
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '597 consists of an 8-bit storage latch feeding a
parallel-in, serial-out 8-bit shift register. Both the storage
register and the shift register have positive-edge triggered
clocks. The shift register also has direct load (from storage)
and clear inputs.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground .

Sire[ft 101
SRC

8

Vee

C
0

A
SER
SRLOAD
RCK
SRCK
SRCLR
QJ..

E
F

G
H

GND

=8SAMSU~G
Electronics

.

11

~13

356

8-Bit Shift-;R egiS fers with
Input Latches
FUNCTION TABLE
INPUTS
SER

SRCK

FUNCTION

SRCLR

SRLOAD

RCK

X

X

L

H

X

S.R. is cleared to "L"

X

X

H

J

X

Input register data is stored into S.R.

L

S

H

H

X

First stage of S.R. becomes "L". Other stages store
the data of previous stage, respectively.

H

I

H

H

X

First stage of S.R. becomes "H". Other stages stores
the data of previous stage, respectively.

X

X

X

X

X

X

X

X

X

X

X

X

State of S.R. is not changed.

..J
L

Input data on ANH line is stored into input register
Storage register state is not changed.

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vce,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
±125 mA
Storage Temperature Range, T5 1g ••• -65°C to +150°C
Power Dissipation Per Package, Pdt ..... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc
........ 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN = VIH or VIL
10=-20/AA
10= -4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

V,N = V,H or V,L
10= 2O/AA
10= 4 mA
10= 8 mA

0.1
0.26
0.39

0.1
0;33
0.5

0.1
0.4

V

Maximur,n Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/AA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/AA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.t.lee

VIN=Vee or GND
10UT=0/AA
per input pin
VI=2.4V
other Inputs:
at Vec or GND
10uT=0/AA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

357

II

KS54AHCT
KS74AHCT

59. 7

8-SitShift-Registers with
Input Latches

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr ,

tf~2 ns), AHCT597

KS74AHCT
KS54AHCT
Ta=25°C
T. = -40°C to +85°C T.=-55°Cto +125°C
Unit
Vcc=5.0V
Vee = 5.0V::t 10%
Vcc=5.0V± 10%
Typ

Min

Maximum Clock Frequency

f max

50

30

Propagation Delay,
SRCKt to Q'H

tpLH

e.-

15

17

20

tpHL

17

20

Propagation Delay,
SRLOADt to Q'H

e.-

15
14

20

tpHL

14

20

24

Propagation Delay,
SRCLRt to Q'H

tPHL

11

18

21

Propagation Delay,
RCKt to Q'H

e.-

15

25

29

15

25

29

Pulse
Width

tpLH

tPLH

tpHL

RCK or SRCK
High or Low

CL=50pF
SLOAD=Low

MHz

"

15

10

15

20

6

10

12

15

20

25

SER before
SRCKt

10

15

20

A thru H before
RCKt

10

15

20

-3

0

0

SRCLR or
SRLOAD Low

RCKt before
SRCKttt

tsu

Hold Time

th
CIN

Power Dissipation Capacitance *

Cpo

24

ns
ns
ns
ns

20
ns

ns

ns
pF

5

* Cpo determines the no-load dynamic power dissipation: PO=CPD VCC 2
t

Max

25

10

Input Capacitance

tt

Min

tw

SRCLRt before
SRCKt
Setup Time

CL =50pF

Max

pF
fin.

For AC switching test circuits and timing waveforms see section 2.
The RCKt to CCKt setup time ensures that the counter will see stable data from the register output.

c8SAMSUNG
ElectroniCS

358

KS54AHCT
KS74AHCT

64016431645
/1
II

Octal Bus Transceivers
with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pilH)ut, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL 24 mA @ VOL 0_5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4_5V to 5_5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -:-40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & ~eel), standard DIPs.

These high-speed octal/bus transceivers are designed for
asynchronous two-way communication between data
buses. A direction control input (DIR) controls the flow
direction of data. When DIR is high, data flows from the
A inputs to the B outputs. When DIR is low, data flows from
B to A. The '643 transfers inverted data from the A bus
to the B bus and non-inverted data from the B bus to the
A bus. The '640 transfers inverted data in both directions.

=

=

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interlace with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps. to V cc and

ground.

DIR

Vee

A1

G

A2

81

A3

82

A4

63

A5

84

A6

85

A7

86

A8

67

GND

88

=8SAMSUNG
Electronics

a

FUNCTION TABLE

PIN CONFIGURATION

Control
Inputs

Operation

G

OIR

'640

'643

'645

L

L

Inverted data
transmitted from
Bus B to Bus A

Data transmitted
from Bus B
to Bus A

Data transmitted
from Bus B
to Bus A

L

H

Inverted data
transmitted from
Bus A to Bus B

Inverted data
transmitted from
Bus A to Bus B

Data transmitted
from Bus A
to Bus B

H

X

Buses isolated
(High-impedance
state)

Buses isolated
(High-impedance
state)

Buses isolated
(High-impedance
state)

359

'1645:
/1

KS54ANQtt~Lf'OI/643'
KS74AHc::n~:K~~

,/1

Octal Bus Transceivers
with 3-State Outputs

LOGIC DIAGRAMS
'640

'643

'645

Absolute Maximum Ratings·
Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI> Vee +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +O.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ... , ..... ±70 mA
Continuous Current Through
Vee or GND pins ................ ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Powet Dissipation Per Package, Pdt ...... 500 mW

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operatiQn
of the device at or beyond them is not implied. Lc>ng.exposure to these conditions may affect device reliability.

c8sAIUISUNG
Electronics

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
\

Supply Voltage, Vee .............. 4.5V to 5.5V
DC Input & Output Voltages *, VIN, Vour . . OV to Vee
Operating Temperature
KS74AHCT:-40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

360

64016431645
/l
/'l

KS54AHCT
KS74AHCT

DC ELECTRICAL CHARACTERISTICS
Characteristic

Tlamce;vers

(Vcc=5V± 10% Unless Otherwise Specified) ,
KS74AHCT
KSS4AHCT
T.= -40°C to +85°C T.= -55°C to +125°C Unit

T. =2S O C

Symbol Test Conditions

OctalfM~i

with 3-StMe'!Outputs

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN = VIH or VIL
lo=-20",A
lo=-6mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20",A
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vcc or GND

±0.5

±5.0

±10.0

J.lA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

2.7

2.9

3.0

Additional Worst
Case Supply
Current

6 1cC

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
lour=OJ.lA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
lour = OJ.lA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlonat

KS54AHCT
KS74AHCT
T. =25°C
T. = -40°C to +85°C T.:: -55°C to +125°C
Vee=5.0V
Vec=5.0V:!: 10%
Vee =5.0 V:!: 10%
Min

Max

Min

tpLH

12
17

14
20

tpHL

CL=50pF
CL=150pF

7
10

12
17,

14
20

CL=50pF
CL=150pF

12
15

20
25

25
31

CL=50pF
CL =150pF

12
15

20
25

25
31

tPZH

Output Disable Time.
G to A or B

~ RL=lkO

tPZL

tpLZ

ns

ns

13

18

22

CL=50pF

13

18

22

10

pF

5
30

pF

5

CIN

Output Capacitance

CouT

Output Disabled

Power Dissipation
Capacitance •

Cpo·

G=Vcc (per stage)
G=GND

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 1
t For AC switching test circuits and timing waveforms see section 2.

"qsSAMSUNG
Electronics

Unit

Max

7
10

t - - - - RL=lkO

Input Capacitance

mA

CL=50pF
CL =150pF

Output Enable Time.
GtoAorB

J.lA

(Input tr • tf~2 ns), AHCT640. AHCT643

Typ

Propagation Delay.
A to B. or B to A

i

'.

fin.

ns
pF

I

KS54AHC,~'~840/643/645

KS74AHCT

AC ELECTRICAL CHARACTERISTICS
Characteristic

Octal Bus. Transceivers
with 3-State Outputs

'

Condltlons t

Symbol

(Input tr , tf~2 ns), AHCT645
T. =25°C
T.
Vee = 5.0V
Typ

Propagation Delay,
A to B, or B to A

Output Enable Time
G to A or B
Output Disable Time,
GtoAorB
Input Capacitance
Output Capacitance
Power Dissipation
Capacitance *

KS74AHCT
KS54AHCT
+85°C T. -55°C to +125°C
Unit
Vee=5.0V±10%
Vee=5.0V± 10%

= -40°C to
Min

=

Max

Min

Max

tpLH

CL=50pF
CL=150pF

6
9

10
19

14
25

tPHL

CL=50pF
CL=150pF

6
9

10
19

14
25

CL=50pF
CL=150pF

12
18

20
29

25
36

CL=50pF
CL =150pF

12
18

20
29

25
36

RL=1kO
CL=50pF

13

18

22

13

18

22

5

pF

Output Disabled

10

pF

§=Vcc (per stage)
G=GND

5
30

tPZH
f---

RL=1kO

tPZl
tpHZ

f---

tpLZ
CIN
COUT
Cpo*

* Cpo determines the no· load dynamic power dissipation: Po=Cpo VCC

ns

ns

ns

pF
l

fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

,I

362

:~

KS54AHCT
KS74AHCT

646·/648
I~

Octal 3-State Bus Transceivers
with Registers

FEATURES

DESCRIPTION

•
•
•
•

The '646 and '648 are bi-directional bus transceivers with
Ootype flip-flops and control circuitry to facilitate high speed
multiplexed data transmission. The '646 transmits true data
and the '648 transmits inverted data.

•
•
•
•
•

•

8 bi-directional data paths
Transmits direct or stored data in either direction
24-pin slim DIP package
Function, pin-out, speed and drive compatibility with
54/74ALS logic family
Low power consumption characteristic of CMOS
3-State outputs with high drive current
(loL =24 mA @ VOL =O.5V) for direct bus interface
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.SV
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54HACT: -55°C to + 125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

Oata can be transmitted directly from one port to the other
in either direction. It also can be stored in the flip-flops from
either or both ports for subsequent transmission to the opposite port. Six control inputs govern the data flow:

G

OIR (direction control) disables A or S outputs permitting the pins to be used as inputs thus determining the direction of a data flow. When
OIR=high, data flows from A to S.
SAS,SSA (data source AS and SA) determines whether
data transmitted is from the data inputs or the
registers associated with those inputs.

PIN CONFIGURATION

(21) (3)

CAB

Vee
CBA

OIA

SBA

Al

G

A2

Bl

A3

82

A4

83

A5

84

A6

B5

A7

86

A8

87

GNO

88

(1)

(23)

(2)

(22)

G OlA CAB CSA SAS SBA
L

X

X

X

CAS,CSA (Clock AS and SA) clocks data from the A inputs and the S inputs, respectively, into their
associated registers. Since the clocks are not
gated with the G and DIR pins, data at the A
and S pins can be clocked into the flip-flops
at any time.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
'lilow direct interface with TIL, NMOS and CMOS devices
without any external components ..
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

(21) (3)

G

H

L

(1)

(23)

(2)

(22)

OlR CAB eBA SAB SBA

X

X

L

X

(21) (3)

G
X

Real-Time transfer
bus A to bus B

c8SAMSUNG
Electronics

(1)

(23)

(2)

(22)

OlA CAB eSA sAB SBA
X
t
X
X
X

x x
H

Real·Time transfer
bus B to bus A

(output enable) when high, all outputs are
disabled, isolating the A and S ports. When
low, one port is enabled at a time as determined by the OIR pin.

X

X

Storage from
A AND/OR B

x

x

x

(21) (3)

G

(1)

(23)

(2)

(22)

DIA CAB CBA SAB SBA
H

x

x

X

X

X

H

H

x
Transfer stored data
to A AND/OR B

363

II

KS54AHC;17~\B;461648
KS74AHCT
II

Octal :3-State Bus Transceivers
with Registers

FUNCTION TABLE
Inputs
G DIR

CAB

CBA

X X
X X

t
X

X
t

Data 110·
SAB SBA A1 thruA8

X
X

X
X

X
X

X

H or L

X
X

X
X

L
H

H
H

X
t
t
X H or L H or L

L
L

L
L

L
L

H
X
H H or L

X

X
X

Operation or Function

B1 thru B8

input
input'
Not specified Not !specified

'646

'648

Store A, B unspecified
Store B, A unspecified

Store A, B unspecified
Store B, A unspecified

Store A and B data
Isolation, hold storage

Store A and B data
isolation, hold storage

Input

Input

L
H

Output

Input

Real-Time B data to A bus Real-Time B data to A bus
Stored B data to A bus Stored B data to A bus

X
X

Input

Output

Real-Time A data to B bus Real-Time A data to B bus
Stored A data to B bus
Stored A data to B bus

X

"The data output functions may be enabled or disabled by various signals at the Gand DIR inputs. Data input functions are always enabled,
ie., data at the bus pins will be stored on every low-to-high transition on the clock inputs.

LOGIC DIAGRAMS
'646

DIR
(3)

(21)
SAB

-0.

SBA
- Vee +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins ................ ±250 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage. Vee
.......... 4.5V to 5.5V
DC Input & Output Voltages·. VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fa" Times. tr • tf . . . . . . . . . Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logiC
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of. the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

Minimum High-Level
Input Voltage

VIH

Maximum Low-Level
Input Voltage

VIL

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

2.0

2.0

2.0

V

0.8

0.8

0.8

V

Vce -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.4

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20jAA
10=-6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20jAA
10=12mA
10=24mA

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

jAA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VOUT=VCC or GND

±0.5

±5.0

±10.0

jAA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

Additional Worst
Case Supply
Current

.t.lcc

VIN=VCC or GND
lOUT=OjAA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT-0,..A

c8SAMSUNG
Electronics

Vec Vcc -0.1
3.98
4.2
0

0.1

jAA
~

2.7

2.9

3.0

I---

mA

365

I

KS54AHCT~,'
KS74AHCT

6461648
'I' .,

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditionst

Oct., 3-$tilt,Bus Transceivers
with Registers·'
(Input tr , tt<2 ns), AHCT646, AHCT648
KS74AHCT
KS$4AHCT
T. =2SOC
T•• -40·C to +8SOC T.= -5SOC to +125°C
Vcc-S. OV
Un"
Vcc=S.OV~ 10%
Vcc·S.OV~10%
Typ

Maximum
Frequency
Propagation Delay,
A or B Input to
B or A Output
Propagation Delay,
CBA or CAB Input to
A or B Output
Propagation Delay, t t
SBA or SAB Input to
A or B Output
(with A or High)
Propagation Delay, t t
SBA or SAB Input to
A or B Output
(with A or Low)

Max

Min

Max

f max

CL=50pF

45

30

25

MHz

tPLH

CL=50pF
CL=150pF

11
14

18
23

22
28

ns

tpHL

CL=50pF
CL=150pF

11
14

18
23

22
28

tpLH

CL=50pF
CL=150pF

15
18

25
30

30
36

tpHL

CL=50pF
CL =150pF

15
18

25
30

30
36

tpLH

CL=50pF
CL=150pF

16
19

27
33

32
38

tPHL

CL=50pF
CL =150pF

16
19

27
33

32
38

tpLH

CL-50pF
CL=150pF

15
18

25
30

30
36

tpHL

CL=50pF
CL""150pF

15
18

25
30

30
36

14
17
14
17

22
27
22
27

26
32
26
32

13

22

26

13

22

26

tPZH

Out Enable Time,
or DIR Input to
A or B Output

f------

Output Disable Time,
G or DIR Input to
A or B Output

f------

a

Min

RL=lkO

CL=50pF
CL=150pF

tPZL
tpHZ
tpLZ

CL=?OpF
CL=150pF

RL=lkO
CL=50pF

ns

\

ns

ns

ns

ns

Pulse Duration, Clocks
High or low

tw

8

12

15

ns

Set up Time, A before CABt
or B before CBAt

tsu

8

12

15

ns

Hold Time, A after CABt
or B after CBM

th

0

0

0

ns

Input Capacitance

5

CIN

Output Capacitance

COUT

Power Dissipation
Capacitance ..

Cpo

Output Disabled

10

pF
pF
pF

.. Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 1 fin.
t For AC switching test circuits and timing waveforms see section 2.

t t These parameters are measured with the internal output state of the storage register opposite to that of the bus input.

c8SAMSUNG
Electronics

366

KS54AHCT
KS74AHCT

6511652
II

Octal 3-State SC!s Transceivers
with Registers

FEATURES

DESCRIPTION

• Independent Registers and Enables for A and B Buses
• Multiplexed Real-Time and Stored-Data
• Choice of Tim'e and Inverting Data Paths
Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(I0L 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices consist of bus transceiver circuits. D·type
flip· flops, and control circuitry arranged for multiplexed
transmission of data directly from the data bus or from the
internal storage registers. Enable GAB and GBA are pro·
vided to control the transceiver functions. SAB and SBA
control pins. are provided to select whether real· time or
stored data is transferred. A low input level selects realtime data, and a high selects stored data. The following
examples demonstrate the four fundamental busmanagement functions that can be performed with the octal
bus transceivers and registers.

=

=

Data on the A or B data bus, or both, can be stored in the
internal D flip-flops by low-to-high transitions at the appropriate clock pins (CAB or CBA) regardless of the select
or enable control pins. When SAB and SBA are in the realtime transfer mode, it is also possible to store data without
using the internal D-type flip-flops by simultaneously enabling GAB and GBA. In this configuration each output reinforces its input. Thus, when all other data sources to the
two sets of bus lines are at high impedance, each set of
bus lines will remain at its last state.

PIN CONFIGURATION
CAB

Vee

SAB

CBA

GAB

SBA

Al

GBA

A2

Bl

A3

B2

A4

B3

A5

B4

A6

B5

A7
A8

B6
B7

GND

B8

(3) (21) (1) (23) (2) (22)
GAB GBA CAB eSA SAS SSA

X

X

These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS apd CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

(3) (21) (1) (23) (2) (22)
GAB GSA CAB eSA SAB SBA

H

H

X

X

(3) (21) (1) (23) (2) (22)
GAB GBA CAB eBA SAB SBA
X
X
t
X
X
X
X
X
t
X

H

Real-Time transfer
bus B to bus A

Real-Time transfer
bus A to bus B

c8SAMSUNG
Electronics

X

Storage from
A AND/OR B

x

(3) (21) (1) (23) (2) (22)
AB GBA CAS CBA SAB SSA

x
H

X

H
H

x
Transfer stored data
TO A AND/OR B

367

I

KS54A_~.·,,'
',.·~.1'

KS74AH.'

1652 .

, ., /1

Ogtal 3·Stat,~,ljIMs ,rr,anscei'vers
with Registers
.

.. 2-

FUNCTION TABLE
INPUTS
GABGBA CAB

DATAI/O·

OPERATION OR FUNCTION

CBA SABSBA A1'THRU A8 B1 THRUB8

L
L

H H or L H or L X
t
t
X
H

X
H

H
H

t
t

L
L

X
L

Hor L

t

t

t

L
L
H
H

L
L
H
H H

H

L

'651

'652

Isolation
Store A and B Data

X
X

Input

Input

Isolation
Store A and B Data

H or L X
X
t
X" X

Input
Input

Not specified
Output *

Store A, Hold B
Store A in both registers

Store A Hold B
Store A in both registers

Inpuf
Input

Hold A, Store B
Store B in both registers

Hold A, Store B
Store B in both registers

X
X H
X
or L

X
X

X Not specified
X**
Output *

X
X
or L X
X
L
X
H

L
H
X
X

H or L H or L H

H

Output

Input

Input

Output

Output

Output

Real-Time B Data to A Bus Real-Time B Data to a Bus
Stored B Data to A Bus
Stored B Data to A Bus
Rea.l-Time A Data to B Bus Real-Time A Data to B Bus
Stored A Data to Bus
Stored A Data to B Bus
Stored A Data to B Bus and Stored A Data to B Bus and
Stored B Data to A Bus
Stored B Data to A Bus

* The data output functions may be enabled or disabled by various signals at the GAB and GBA inputs. Data input functions

are always enabled, ie., data at the bus pins will be stored on every low-to-high transition on the clock inputs.

* * Select control=L: clocks can occur simultaneously
Selectcontrol=H: clocks must be staggered in order to load both registers

LOGIC DIAGRAMS
'651

'652

GBA-=~--<[>""1

GBA -="-----4:>--.

GAB-=----1>-~----------------,

GAB~---~>-~-----------------'

CBA~~------~--------~~----_h

CBA~~------~--------~~-----h

SBA~~------~~~~~

SBA-=~------~~O-~~

CAB

CAB

SAB~--_+--~~~~

SAB~---+--~~~~

I

:,(20)

+-+-+-'-- B1

A1--+-t-+...

I

I
I

..J
~----~----~vr----------J

TO 7 OTHER CHANNELS

c8SAMSUNG,
Electrpnics .

~----~----~vr-----------J

TO 7 OTHER CHANNELS

368

KS54AHCT
KS74AHCT

6511652

Octal 3-State Bus Transceivers
with Registers

Absolute Maximum Ratings*
Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -:-0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±70 mA
Continuous Current Through
. Vec or GND pins .............. " ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating' Conditions
Supply Voltage, Vee .............. 4.5V to 5.5V
DC Input & Output Voltages * , VIN, Vour .. OV to Vee
Operating Temperature'
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation .
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test.Conditions

(Vee=5V±10% Unless Otherwise Specified)

T. =25°C
Typ

KS54AHCT
KS74AHCT.
T.= -40°C to +85°C T.= -55°C to +125°C Unit
Guaranteed limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum' Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIHor VIL
10=-20JlA
lo=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20JlA
10=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

JlA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vee or GND

±0.5

±5.0

±10.0

fiA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

JlA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

ll.lee

VIN=Vee or GND
lour=OJlA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour = OJlA

c8,SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

~

369

II

KS54AHCT
-KS74AHCT

651"1652

AC ELECTR,CAL CHARACTERISTICS
.Chlrlcterlstlc

Symbol

Condltlons t

Octal 3-8tate Bus· Transceivers
with Registers
(Input tr , tf"";2 ns), AHCT651, AHCT652
1(S74AHCT
KS54AfofCT
T.=25°C
T. = -40°C to +85°C T.=-55°Cto +125°C
Unit
Vcc=5.0V
Vcc=5.0V± 10%
Vcc=5.0V±10%
Typ

Min

f max

CL=50pF

45

30

Propagation Delay,
A or B Input to
B or A Ouput

tpLH

CL=50pF
CL=150pF

11
14

18
23

22
28

tpHL

CL=50pF
CL=150pF

11
14

22
28

Propagation Delay,
CSA or CAB Input to
A or· B Output

tpLH

CL=50pF
CL=150pF

30
36

tpHL

CL=50pF
CL =150pF

15
18
15
18

18
23
25
30
25
30

30
36

Propagation Delay,
SSA or SAB Input to
A or B Output
(with A or B High)

tpLH

CL=50pF
CL :;150pF

16
19

27
32

32
38

tpHL

CL=50pF
CL=150pF

16
19

27
32

32
38

Propagation Delay,
SSA or SAB Input to
A or B Output
(with A or BLow)

tpLH

CL=50pF
CL =150pF

15
18

25
30

30
36

tpHL

CL=50pF
CL=150pF

15
18

25
30

30
36

Output Enable Time,
GSA to A or
GAB to B

tPZL

-

CL=50pF
CL=150pF

19
22

32
37

38
44

CL=50pF
CL =150pF

19
22

32
37

38
44

Output Disable Time,
GSA to A or GAB to B

-

13

22

26

13

22

26

Clock Frequency

AL=1kO
tPZH
tpHZ
tpLZ

AL=1 kO
CL=50pF

Max

Min

MIx

MHz

25

ns

ns

ns

ns

ns

ns

Pulse Width Clocks
High or Low

tw

8

12

15

ns

Setup Time, A before CABt
or B before CBAt

tsu

8

12

15

ns

Hold Time, A after CABt
or B after CBAt

th

a

0

0

Maximum Input Capacitance
maximum Output
Capacitance
Power Dissipation
Capacitance *

CIN
COUT Output Disabled

,

ns

5

pF

10

pF

Cpo

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t.~or AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

370

1659

KS54A.HCT 658~
KS74AHCT
/1

Octal Bus Transceivers
with Parity

FEATURES

DESCRIPTION

• Bus Transceivers with Inverting Outputs('658) or True
Outputs ('659)
?• Generates a Parity Bit for A Bus and B Bus
• Easily Cascadab/e
• Internal Active Pull-Ups and Pull-Downs
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(/ol
24 mA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These octal bus transceivers are designed for asynchronous, bidirectional communication between data
buses. The devices transmit data from the A Bus to the
B Bus, or from the B Bus to the A Bus, depending on the
levels at the direction control inputs, GAB and GBA. These
devices a/so generate parity outputs. APO and BPO, which
reflect the number of high levels at the A Bus and B Bus,
respectively, taking into account the parity inputs API and
BPI.

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

=

GAB

Vee

A1
A2

GBA

The bidirectional/IO ports feature active circuits on the input
stage that, when the output shar.ed by that pin is disabled,
will maintain the input in the last state taken by the output.
This state will be maintained until changed by activity on
the bus. The advantage of this arrangement is that when
all outputs on the bus are disabled, the inputs will be
prevented from floating, resulting in minimum power dissipation and minimum susceptibility to noise. This eliminates
any need for external pull-up or pull-down resistors. The
parity inputs API and BPI have similar circuits.

B1

A3

B2

A4

B3

A5

B4

A6

B5

A7

B6

A8

B7

BPI

B8

BPO

API

GND

APO

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE
CONTROL
INPUTS
GBA

GAB

L

L

H
H

L

H
L

H

NUMBER OF HIGH
INPUTS ON
A BUS AND API

NUMBER OF HIGH
INPUTS ON
B BUS AND BPI

X

D, 2, 4, 6, 8

Z

H

X

1, 3, 5, 7, 9

Z

L

0, 2, 4, 6, 8

X

H

Z

1,3,5,7,9

X

L

Z

Z

X

X

X

0, 2, 4, 6, 8

X

. 1, 3, 5, 7, 9

OUTPUTS
APO BPO

'658

'659

B Data to A Bus

B Data to A Bus

A Data to B Bus

A Data to B Bus

Isolation

Isolation

8 Data to A Bus,
A Data to B Bus

B Data to A Bus,
A Data to B Bus

H
L

0, 2, 4, 6, 8

X

H

1, 3, 5, 7, 9

X

L

c8SAMSUNG
Electronics

Z

OPERATION

371

II

KSS4AHCT
KS74AHCT

6581659
II,

Octal Bus Transceivers'
with Parity

LOGIC DIAGRAM
GBA

GAB

(23)

(1)

L-t>

....... i ) v

T .....

....... I.,)
.......

.....

-

-

!---~~-~~~J
.....

:
A1 __~(2~)__________~~~~

I

h

~~ ~ht-:..J...
(3)

'659

v

~

'658

TG

_

1

--'659
: __~__________
(22)
~~
~~

L _ .... ~~51!... _ _ _ _ ~ ___ .... _ j

A2--~--------~~--~

A3--~(4~)--------~-+__~
A4--~(5~)------~~-+__~

A5--~(6~)-----'4-~-+--~1
A6--~(7~)--~-+4-~-+__~

A7--~(8~}--~~~1-~r---~1
A8 __~(9~).-~~+-~-+~~1

B1

I

:
(21)
(20)
(19)
(18)
(17)
(16)
(15)

~--~~--------~~ B2

7 INVERTING (NONIVERTING FOR '659)
CHANNELS IDENTICAL TO CHANNEL
1 ABOVE

I

B3
B4
B5
B6
B7
B8

(13)

APO

(10)

BPI

Absolute Maximum Ratings*
Supply Voltage Range Vcc, ' ...... -0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +O.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±70 mA
Continuous Current Through
Vcc or GND pins. , ...... '
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device, reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
' .... , ... 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf ...... .
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

372

KS54AHCT
KS74AHCT

6581/659
/l

Octal Bus Transceivers
with Parity

DC ELECTRICAL CHARACTERISTICS
Chafacteflstlc

Symbol Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

KS74AHCT
KS54AHCT
T.= -40°C to +85°C T.= -55°C to +125°C Unit

T. =25°C
Typ

Guafanteed Limits

Minimum High-Level
Input Voltage

V,H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V,L

0.8

0.8

0.8

V

Vcc -0.1
3.84

Vec -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

flA

±0.5

±5.0

±10.0

flA

8.0

80.0

160.0

flA

2.7

2.9

3.0

mA

Minimum High-Level
. VOH
Output Voltage

V'N=V'H or V'L
lo=- 2OflA
10= -6mA
V,N=V,H or V,L
lo=20flA
lo=12mA
lo=24mA

Vee Vcc -0.1
4.2
3.98

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

hN

V'N=VCC or GND

Maximum 3-State
Leakage Current

loz

Output Enable
.. =V,H
VOUT=VCC or GND

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

~Icc

0

V'N=VCC or GND
10uT=OflA
per input pin
V,=2.4V
other Inputs:
at Vcc or GND
louT=OflA

-

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input t r, tf~2 ns) AHCT658· AHCT659
KS54AHCT
KS74AHCT
T. =25°C
T. = -40°C to +85°C T.=-55°Cto +125°C
Unit
Vee = 5.0V
Vee=5.0V:t 10%
Vee=5.0V±10%
Min

Typ

Propagation Delay,
AorBtoBorA

Propagation Delay,
API or BPI to APO or Bf:'O

Enable Time, GABor
GBA to APO or BPO

Input Capacitance
Output Capacitance
Power Dissipation
Capacitance *

Max

18
23

22
28

CL=50pF
CL =150pF
CL=50pF
CL =150pF

11
14
16
19

18
23
27
32

22
28
32
38

tpHL

CL=50pF
CL=150pF
CL=50pF
CL =150pF

27
32
18
23

32
38

tpLH

16
19
11
14

tpHL

CL=50pF
CL =150pF

11
14

18
23

22
28

CL=50pF
CL =150pF

16
19

27
32

32
38

CL=50pF
CL =150pF

16
19
16

27
32
27

32
38
32

tpHZ

16

27

32

C,N

5

tpLH

tPZH
I----

RL=1kO

tPZL
Disable Time, GAB or
GBA to APO or BPO

Min

11
14

tPHL
Propagation Delay,
A or B to APO or BPO

Max

CL=50pF
CL =150pF

tpLH

RL=1kO
~ CL=50pF

ns

ns -

ns

ns :
pF
pF

COUT

pF

Cpo

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC

22
28

ns

2

fin.

t For AC switching test circuits and timing waveforms see section ~.

c8SAMSUNG
Electronics

373

II

KS54AHCT
KS74AHCT

6641665
/1

Octal Sus. Transceivers
with Parity

FEATURES

DESCRIPTION

• Bus Transceivers with Inverting Outputs ('664) or True
Outputs ('665)
• Generates a Parity Bit for A Bus and B Bus
• Easily Cascadable
• Internal Active Pull-Ups and Pull-Downs
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
..
• low power consumption characteristic of CMOS
• 3·State outputs with high drive current
(IOL 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMO~
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These octal bus transceivers are designed for asynchronous, bidirectional communication between data
buses. The devices transmit data from the A Bus to the
B Bus or from the B Bus to the A Bus, depending on the
level at the direction control input, DIR. The enable input~
G, can be used to disable the device so that the buses
are isolated. These devices will also generate parity outputs, APO and BPO, which reflect the number of high levels
at the A Bus and B Bus, respectively, taking into account
the parity inputs API and BPI.

=

=

These devices provide $peeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CNlOS devices
without any external components.

·PIN CONFIGURATION
DIR

Vee

A1

G

A2

91

A3

82

A4

83

A5

84

A6

85

A7

86

A8

87

8PI
BPa

88
API

GND

APO

The bidirectional I/O ports feature active circuitry on the
input stage that, when the output shared by that pin is
disabled, will maintain the input in the last state taken by
the output. This state will be maintained until changed by
the activity on the bus. The advantage of this arrangement
is tht when all outputs on the bus are disabled, the
inputs will be prevented from floating, resulting in minimum
power dissipation and minimum susceptibility to noise. This
eliminates any need for external pull-up or pull· down
resistors. The parity inputs API and BPI have similar circuitry.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground. -,

FUNCTION TABLE
CONTROL
INPUTS

G

DIR

L

L

L

H

H

X

NUMBER OF HIGH
INPUTS ON
A BUS AND API

NUMBER OF HIGH
INPUTS ON
BBUS AND BPI

OUTPUTS
APO

BPO

X

0, 2, 4, 6, 8

Z

H

X

1,3,5,7,9

Z

L

0, 2, 4, 6, 8

X

H

Z

1,3,5, 7, 9

X

L

Z

X

X

Z

Z

=8SAMSUNG
Electronics

OPERATION
'665

'664

B Data to

A Bus

B Data to A Bus

A Data to

B Bus

A Data to B Bus

Isolation

Isolation

374

KS54AHCT
KS74AHCT

664/665
/1

Octal Bus Transceivers
with Parity

LOGIC DIAGRAM

DIR;_~(1.!...1-----.:=---n~+___--lL......l

r-,;..------------ -1
I

A1

(2)

(22)

B1

----- Vee +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vce +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo< Vee .f-0.5V) .
±70 mA
Continuous Current Through
Vee or GND pins ................ ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
... 500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c5!SAMSUNG
• • Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc .............. 4.5V to 5.5V
DC Input &' Output Voltages *, VIN, VOUT . . OV to Vce
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHC~ -55°C~ +125°C
Input Rise &' Fall Times, tr , tf ' . , , .... , Max 500 ns
Unused inputs must always be tied to an appropriate .logic
voltage level (either Vee or GND)

375

I

Octal Bus'Transceivers
with Parity
DC ELECTRICAL CHARACTERISTICS

(Vce=,5V± 10% Unless Otherwise Specified)

,',

Characteristic

Symbol Test Conditions

T. =25°C

KS74AHCT
KS54AHCT
T.= -40°C to +85°C T.= -55°C to +125°C Unit
Guaranteed, Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10= -6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vec or GND

±0.1

±1.0

±1.0

/.lA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

/.lA

Maximum Quiescent
Supply Current

lee

8.0

80.0

160.0

/.lA-

2 ..7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

Alee

VIN=Vce or GND
10UT=0",A
per. input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

c8PIUISUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

376

KS54AHCT
KS74AHCT

664/6:65
,
'

Octal Bus Tran$celvers
with Parity

AC ELECTRI,CAl CHARACTERISTICS
Characteristic

(Input tr , t,<2 ns), AHCT664, AHCT665
KS74AHCT
KS54AHCT
T. =25°C
T." -40°C to +85°C T... -55°C to,+ 125°C
Unit
Vcc= S.OV
Ycc=S.OV:i:10%
Vcc=S.OV:i:10%

Symbol ,Conditions t

Typ

Propagation Delay,
AorBtoBorA

Propagation Delay,
A or B to APO or BPO

Propagation Delay,
API or BPI to APO or BPO

Output Enable Time,
GtoAorB

Output Enable Time,
DIR to A or B

Input Capacitance

MIx

tpLH

22
28

ns

tpHL

CL=5OpF
CL=150pF

11
14

18
23

22
28

ns

tpLH

CL=5OpF
CL=150pF

16
19

27
32

32
38

ns

tpHL

CL=50pF
CL=150pF

16
19

27
32

32
38

ns

tpLH

CL=5OpF
Cl=150pF

11
14

18
23

' 22
28

ns

tpHL

CL=5OpF
CL =150pF

11
14

18
23

22
28

ns

CL=5OpF
CL=150pF

16
19

27
32

32
38

ns

C~=5OpF

16
19

27
32

32
38

ns

tpzH

'~

'h

RL~1kO

tpHZ
tpLZ

CL=150pF

tPZH

-

RL=lkO

tPHZ
tpLZ

t---

\

16

27

32

ns

16

27

32

ns

CL=50pF '\
CL=150pF'

16
19

27
32

32
38

ns

CL=5OpF
CL=150pF

16
19

27
32

32
38

ns

16

27

32

ns

16

27

32

ns

RL=lkO
CL=5OpF

tPZL
Output Disable Time,
DlR tt> A or B

Min

18
23

-

MIx

11
14

tPZL
Output Disable Time,
GtoAorB

Min

CL=5OpF
CL=150pF

RL=lkO
CL=5OpF

GIN

Output Capacitance

COUT Output Disabled

Power Dissipation
Capacitance *

Cpo

pF

5

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC

pF
pF
2

fin,

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

377'

II

~S54AHCT··610
KS74AHCT ... ,

4-Sy-4 Register Files

with 3-State Outputs

FEATURES

DESCRIPTION

·Seperate Read Write
Addressing Permits Simultaneous Reading and
Writing
• Expandable to 512 Words of 7-bits
• For use as:
- Scratch pad memory
- Buffer Storage between processors
- Bit storage in fast multiplication designs

The '670 is a 16-bit 3-State Register File organized as 4
words of 4 bits each. Separate Read and Write Address
and enable inputs are available, permititng simultaneous
writing into one word location and reading from another
location. The 4-bitword to be stored Is presented to four
Data inputs. The Write Address inputs (W A and We) determine the location of the stored word. When the Write
Enable (Gw) input is LOW, the data is entered into the addressed location. The addressed location remains
transparent to the data while the Gw is 'LOW. Data supplied at the inputs wiH be read out in true (non-inverting)
form from the 3-State outputs. Data and Writ~ Address inputs are inhibited when Gw is HIGH.

• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with drive current
(IOL = 24 mA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range:. 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

02
03

04
RB

Direct acquisition of data stored in any of the four registers
is made possible by individual Read Address inputs (R A
and Rs). The addressed word appears at the four outputs
when the Read Enable (GR) is LOW. Data outputs are in
the HIGH impedance "off" state when the read enable
input is HIGH. This permits outputs to be tied together to
increase the word capacity to very large numbers.
Up to 128 devices can be stacked to increase the word
size to 51 2 locations by tying the 3-State outputs together.
Since the limiting factor for expansion is the output HIGH
current, further stacking is possible by tying pull-up resistors
to the outputs to increase the 10H current available. Design
of the read enable signals for the stacked devices must
ensure that there is no overlap in the LOW levels which
would cause more than one output to be active at the same
time. Parallel expansion to generate n-bit words is accomplished by driving the enable and address inputs of
each device in parallel.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

R~

04
03

GNO

FUNCTION TABLES

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

WRITE MODE SELECT TABLE

READ MODE SELECT TABLE

OPERATING
MODE
Write Data
Data
Latched

INPUTS

OW

Dn

INTERNAL
LATCHESCe)

L
L

L
H

L
H

H

X

no change

NOTE:
a. The Write Address (WA and We) to the "Internal
latches" must be stable while Ow is LOW for conventional operation.

c8SAMSUNG
Electronics
.

INPUTS
OPERATING
MODE

OUTPUT,
On

GR

INTERNAL
LATCHESlb)

Read

L
L

L
H

L
H

Disabled

H

H

(Z)

NOTE:
b. The selection of the "internal latches" by Read Address
(RA and Rs) are not constrained by Gw or GR
operation.

378

KS54AHCT
KS74AHCT

670

4-8y-4 Register Files
with 3-State Outputs

LOGIC DIAGRAM

I

Absolute Maximum Ratings*
Supply Voltage Range Vee •........ -0.5V to +7V
DC Input Diode Current. 11K
(V, < -0.5V or V, > Vee +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
...... ±250 mA
Storage Temperature Range. Tstg ... -65°C to :+-150°C
Power Dissipation Per Package. Pdt
500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to' the device may occur.
These are stress ratings only .and functional operation
of the device at or beyond them is not implied. Long ex- .
posure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vee
4.5V to 5.5V
DC Input & Output Voltages·. ViN. VOUT
OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times. tr • tt ..
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

379

67'0

4-By~

Register File$ ,
with 3-State 'Outputs

KS54AHCT
KS74AHCT· ' '

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

T. =2S O C
Typ

Minimum High-Level
Input Voltage
Maximum Low-Level
Input Voltage

VIH
VIL

Minimum High-Level
Output Voltage

VOH

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

hN

Maximum 3-State
.Leakage Current

loz

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

I

61ee

VIN=VIH or VIL
lo=-20lAA
lo=-6mA
VIN=VIH or VIL
lo=20,..A
lo=12mA
lo=24mA
VIN=Vee or GND
Output Enable·
=VIH
Vour=Vee or GND
VIN=Vec or GND
lour=O,..A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour=O,..A

Guaranteed Limits
2.0

2.0

2.0

V

0.8

0.8

0.8

V

Vee -0.1
3.84

Vcr; -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

,..A

±0.5

±5.0

±10.0

,..A

8.0

80.0

160.0

lAA

2.7

2.9

3.0

mA

Vee Vee -0.1
4.2
3.98
0

KS74AHCT
KS54AHCT
T. = -40°C to +8S o C T. = -55°C to +125°C Unit

380

KS54AHCT
KS74AHCT

670

4-8y-4 Register Files
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Input tr , tf~2 ns), AHCT670

Conditions T

KS74AHCT
KS54AHCT
T.=25°C
T.= -40°C to +85°C To = - 55°C to + 125°C
Unit
Vcc=5.0V
Vee= 5.0V± 10%
Vee=5.0V± 10%
Typ

Maximum Propagation Delay,
RA or Rs to Output

Propagation Delay,
Gw to Output

Propagation Delay,
Data to Output

Qutput Enable Time
GR to Output

Dn to Gw

Set up
Time

WA,WB to Gw

Hold
Time

WA, Ws to Gw

On to Gw

Input Capacitance

Max

Min

Max

23
28

23
34
28
34

tpLH
tpHL

CL=50pF
CL =150pF

17

23
28

tpLH

CL =50pF
CL =150pF

15
18

25
30

30
36

tpHL

CL=50pF
CL=150pF

15
18

25
30

30
36

tpLH

CL=50pF
CL=150pF

14

17

23
28

28
34

tpHL

CL =50pF
CL =150pF

28
34

tPZH
r----- RL=1 kO
tPZL

Output Disable Time
GR to Output

Min

14

CL =50pF
CL=150pF

14

14

17

23
28

CL=50pF
CL=150pF

13
16

21
26

25
31

CL=50pF
CL=150pF

13
16

21
26

25
31

17

28

34

17

28

39

~ RL =1 kO
tpLZ

17

CL =150pF

tsu
th
CIN

Output Capacitance

COUT Output disabled

Power Dissipation Capacitance *

Cpo

6

10

12

10

14

16

a
a

a
a

a
a

ns

ns

n~

ns

ns
ns
ns

5

pF

10

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin
t For AC switching test circuits and· timing waveforms see section 2.

=8~SUNG

381

I

KS54AHCT
KS74AHCT

67"'91//168' 0

12-8;t Address Comparators

DESCRIPTION

FEATURES

The '679 and '680 address comparatofs simplify addressing of memory boards and/or other peripheral devices. The
four P inputs are normally hard wired with a preprogrammeq address. An internal decoder determines what input information applied to the 1 2 A inputs must be low or high
to cause a low state at the output (Y). For example, a
positive-logic bit combination of 0111 (decimal 7) at the
P input determines that inputs A 1 through A7 must be low
and that inputs A8 through A 1 2 must be high to cause the
output to go low. Equality of the address applied at the A
inputs to the preprogrammed address is indicated by the
output being low.

• '679: 12-blt to 4-bit comparator with enable
• '680: 12-bit to 4-bit comparator with latch
• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
(IOL =24 mA @ VOL =0.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
.
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" ,packages
(Available Tape & Reel), standard DIPs.

The '679 features an enable inpu (G). When G is low, the
device is enabled. When G is high, the device'ls disabled
and the output is high regardless of the A and P inputs.
The '680 features a transparent latch and a latch enable
input (E). When C is high, the device is in the transparent
mode. When C is low, the previous logical state of Y is
latched.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

PIN CONFIGURATIONS
'679

'680
Vee

A1

Vee

A1

A2

G

A2

E

A3

y

A3

y

A4

P3

A4

P3

A5

P2

A5

P2

A6

P1

A6

P1

A7

PO

A7

PO

A8

A12

A8

A12

A9

A11

GNC

=8SAMSUNG
Electronics

A9

A11

GND

A10

382

KS54AHCT
KS74AHCT

6791/680'
11

12-8it Address Comparators

LOGIC DIAGRAMS
'680

'679

A1
A2

A3

A4

A5

A6

A7

A8

A9

AI10

A11

(1)
A1
(2)

(3)

(4)

A2

A3

A4

(5)
A5

(6)
A6

(7)
A7
(8)
A8

(9)
AI9

(11)

(12)

(1)

(2)

(3)

(4)

(5)

(6)

I

(7)

(8)

(9)

A10 (11)

A11 (12)

(13)

c8SAMSUNG
Electronics

383

"~I

:

KS54AHCT
:KS74AHCT
, .' , ' '.

'!

.

~

.

,

679.1680
/1

·1'2:.rJit Address··Comparators

FUNCTION TABLE
'679

'680

G

E

P3

P2

P1

PO

- INPUTS COMMON TO'679 AND ,'680
A1

A2

A3

A4

AS

A6

A7

A8

L
L
L
L

H
H
H
H

L
L
L
L

L
L
L
L

L
L
H
H

L
H
L
H

H
L
L
L

H
H
L
L

H
H
H
L

H
H
H
H

H
H
H
H

H
H
H
H

H
H
H
H

H
H
H
H

L
,L
L
L

H
H
H
H

L.
L
L
L

H
H
H
H

L
L
H
H

L
H
L
H

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L
L

H
L
L
L

H
H
L
L

H
H
H
L

L
L
L
L

H
H
H
H

H
H
H
H

L
L
L
L

L
L
H
H

L
H
L
H

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L

H
H
H

H
H
H

H
H
H

L
L
H

L
H
L

L
.L
L

L
L
L

L
L
L

L
L
L

L
L
L

L

H

H

H

H

H

L

L

L

L

L

'L

H

H
L

OUTPUT
A11

A12

y

H
H
H
H
H
H
.,
H
H

H
H
H
H

H
H
H
H

L
L
L
L

H
H
H
H

H
H
H
H

H
H
H
H

H
H
H
H

H
H
H
H

L
L
L
L

L
L
L
L

L
L
L
L

H
L
L
L

H
H
L
L

H
H
H
L

H
H
H
H

L
L
L
L

L
L
L

L
L
L

L
L
L

H
L
L

H
H
L

H
H
H

L
L'
L

L*
L*
L*

L

L

L

L

L

L

L

All other combinations

A9

A10

'

";"

L
H

'679: Any combination

H

'680: Any combination

Latched

Note: These three rows of the function table show combinations that would normally not be used in address comparator ap, plicatlons. The logic symbols above are not valid for all combinations in Which P = 1 2, 13 and 1 4. If symbols valid for
all combinations are required, starting with the fourth Exclusive-OR from the bottom, change P~9 to P=9 ... 11/13 ...
15,P~10 to P=10/11/14/15, and P~11 to P=11/15.

Absolute Maximum Ratings·
Supply Voltage Range Vcc, .... '. . . -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V.or VI > Vcc +0.5V) ..... ±20 mA
DC Output Diode Current, 10K
.
(Vo < -0.5V or Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) ......... ±70 mA
CJl.ntinuous ClJrrent Through
Vcc or GND pins ................ ±250 mA
iStorage Temperature Range, Tstg ... -65°C to +150 o C
Power Dissipation Per Package, Pdt ...... 500 mW
* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposLire to these conditions may affect device reliability.

c8SAMSUNG
Eleptronics '
,

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages *, VIN, Your . . OV to Vcc
Operating Temperature
Range
KS74AHCT: ·-40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns
',>

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

384

KS54AHCT 6'7t'1/~80
KS74AHCT . I "/UI

12-BitAddress Comparators

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

T. =25°C
Typ

Minimum High-Level
Input Voltage

KS74AHCT
KS54AHCT
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

VIH

2.0

2.0

2.0

V

Maximum Low-Level
. VIL
Input Voltage

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OIAA
10= -6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=201AA
10=12mA
10=24mA

Maximum Input
Current

lIN

VIN=Vce or GND

±0.1

±1.0

±1.0

IAA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

IAA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

IAA

2.7

2.9

3.0

mA

Additionaf Worst
C~se Supply
Current

tilee

Vee Vee -0.1
4.2
3.98
0

VIN=Vec or GND
10uT=01AA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
IOUT=OIAA

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr , tf~2 ns), AHCT679

KS54AHCT
KS74AHCT
T. =25°C
T. = -40°C to +85°C T. = -55°C to +125°C
Vee = 5.0V
Vcc=5.0V% 10%
Vee=5.0V%10%

Symbol

Conditions t

tpLH

CL=50pF
CL=150pF

18
21

30
35

36
42

tPHL

CL=50pF
CL=150pF

18
27

30
35

36
42

tpLH

CL=50pF
CL=150pF

16
19

26
31

31
37

tPHL

CL=50pF
CL=150pF

16
19

26
31

31
37

tPLH

CL=50pF
CL=150pF

12
15

19
24

23
29

tPHL

CL=50pF
CL=150pF

12
15

19
24

23
29

Typ

Propagation Delay,
Any P to Y

Propagation Delay,
AnyAtoY

Propagation Delay,
G to Y
Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

Min

5

Max

Min

Unit

Max

ns

ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC1 fin:
t For AC switching test circuits and timing w8vefofms see section 2.

c8SAMSUNG
Electronics
..

385

I

KS54AHCT
KS74AHCT

679.1/680
. ,/1

12-811 Address Comparators·

AC ELECTRICAL CHARACTERISTICS
&

Characteristic

(Input fr, ~2 ns), AHCT680

T.=25°C
Vcc= S.OV

Propagation Delay,
Any A to Y

II

I

KS54AHCT
T.= -55°C to +125°C
Vcc=S.OV± 10%

Conditionst

fru.t

Cl=50pF
Cl=150pF

21
24

35
40

42
48

lAil

Cl=-50pF
CL=150pF

21
24

42
48

fru.t

CL=50pF
Cl=150pF

18
21

35
40
30'
35

36
42

tpHl

CL=50pF
Cl=150pF

18
21

30
35

36
42

tpLH

Cl=50pF
CL=150pF

13
16

21
26

25
31

tpHl

Cl=50pF
Cl=150pF

13
16

21
26

25
31

Typ

Propagation Delay,
AnyPtoY

KS14AHCT
T.= -40°C to +85°C
Vcc=S.OV±10%

Symbol

Propagation Delay,
E to Y

Min

Max

Min

Unit

Max

ns

ns

ns

Set up Time
An before E

tsu

6

10

12

ns

Hold Time
An after E

ltJ

0

0

0

ns

Input Capacitance

CIN

5

Power Dissipation Capacitance"

Cpo

pF
pF

.. Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fint For AC switching test circuits and timing waveforms see section 2_

=8SA11SUNG
EIecIronics

386

8-Bit Magnitude
Comparators
FEATURES

DESCRIPTION

• Compares Two Hit Words
• '682 has 2OkO pullup Resistors on the Q Inputs
• Function, pilHMd, speed and cIriwe compatibility with
S4174ALS logic family
• Low power consumption characteristic of CMOS
• Higft.Driwe.Current outputs:
(loa. =24 IDA .. VOL =O.SV) for"reeI bus interface
• Inputs and 0UIputs interface cIracIIy with TTl, NMOS
and CMOS deIices
• Wide operating woItage range: 4.SV to S.SV
• Characterized for operation 01181' industrial and
military temperature ranges:

These magntude comparators perfonn compaisollS of two
eight-bit binary or BCD words. AI types provide P=Q and
P>Q outputs. The '682 fea...es 20-k2 puIup termination
resistors on the Q inputs for analog or switch data.

KS74AHCT: -40°C to +85°C
KS54AHCT: - ssoC to + 12SoC

These devices provide speeds and drive capability
equivalent to their ALSTTl counterparts and yet main1ain
CMOS power levels. The input and output voltage levels
aIow direct interface with TTL, NMOS and CMOS devices
without any external components.
AI inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

• Package options include "small outline" packages
(Available Tape & Reel). standard DIPs.

PIN CONFIGURATIONS

FUNCTION TABLE

I

'682 and '684
INPUTS
Va;

P>O
PO

p=o

ao

07

P1

P7

01

Q6

P2

P6

02

Q5

P3

P5

Q3

:l4

GND

P4

OUTPUTS

DATA

ENABLES

P,Q
P=Q
P>Q
PQ
X

G2
X

P=Q

L

L

P>Q
H

X
X

L
X

H
H

H

H
X
H

X
H
H

H
H
H

H
H
H

L

NOTES: 1. The last 31i1es of the fmction table apply only
to the device havng enable qus, i.e., '686.
2. The PO outputs to a 2-input
NAND gate.

'686
Va;

G2
p=o
07
P7

NC
Q6

P2

P6

02

Q5

P3
Q3

GND

----

P5
Q4

P4

NC-No internal connecIion

=8~SUNG

387

\

KS54AHCT
KS74AHCY'

.

68216841686

8-BitMagnitude
Comparators

LOGIC DIAGRAMS
'682 or '684

:k

PO

00
P1

01

P2

~
~

02
P3

03
P4

04
PS

05•
P6

06
P7

~

....

(6)

....

(7)~
-V-

(8)

....

..)~
.....
(11)

....

(19)

~

&-

~

-

J

-t>o-

-

-

~

(121?P....

~
(14)

(15)

.....

....

,~

~I

o 7 (18)

.....

c8SAMSUNG
Electronics

~>-

(1)

~~
==I"

--

~)
~

L.r

388

KS54AHCT
KS74AHCT

68216841886

LOGIC DIAGRAMS

8-Bit 'Magnitude
Comparators

(continued)

'686
(23)

.~
(22)

(3)

PO

00

(4)~

P1

(5t..~

02
P3

03
P4

04
P5

05
P6

06
P7

o7

-

So-

.....

(6l£

~

.....

01
P2

~

.....

(8)

-

....

~

II

.....

(10)

....

(11)~
.....
(132.

(

~

-h

-

..)~

(15)

~~

.....

.....

~&
(17)

~~

.....

-

(16~
....

-

~[:;;:;I

(20)

(21)

(1)

I
t

c8SAMSUNG
Electronics

)'

~.

J~
r

-

389

KS54AMCT
KS74AHCT

682II16,841686.'.
II

S-Sit'Magnitude'
, Comparators

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/~C from 65°C to 85°C

Supply Voltag~ .Range Vee •....... -0.5V to +7V
DC Input Diode Current. ',K
(V, < -0.5V or V, > Vee +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . .
± 1 25 mA
Storage Temperature Range. Tslg ... - 65 ° C to + 150 ° C
Power Dissipation Per Package. Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage. Vce. . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages *. Y,N. VOUT . . OV to Vce
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times. t r • tf . . . . . . . . . Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL, CHARACTERISTICS
Parameter

Symbol

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

IMinimum

High-Level
V,H
Input Voltage
- - - - - - - - - - rMaximum Low-Level
V,L
Input Voltage

54AHCT
KS74AHCT
Ta =-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limit.

2.0

2.0

2.0

0.8

0.8

0.8

---------1-.

Minimum High-Level
Output Voltage
(Totem-pole Outputs)

V,N=V,H or V,L
10=-20",A
10=-6mA

VOL

V'N=V'H or V,L
10=20",A
10=12mA
10=24mA

Maximum Low-Level

i Output Voltage
(All Outputs)
-_._.""- -_. "._---.---

Maximum Input
Current.
('682 Q Inputs)

V

Vce -0.1
3.84

Vce -0.1
3.7

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

Vee=Max
V'N=2.7V
V'N=O.4V

-0.2
-0.4

-0.2
-0.4

-0.2
-0.4

mA

0

V

hN

V'N=Vec or GND

±0_1

±LO

±LO

IlA

Maximum 3-State
Leakage Current

loz

Output Enable
=V,H
VOUT=VCC or GND

±0.5

±5.0

±10.0

.1lA

For '682:
V'N=GND (00-07)
V/N=Vcc or GND
(all other inputs)

3.5

3.5

3.5

rnA

For '684 and '688
Vw=Vcc or GND
1our"';01lA

8.0

80.0

160.0

IlA

2.7

2.9

3.0

rnA

Icc

I

I

I

per input pin

I

Addilional Worst

~ Case SupPly
II

Vee Vee -0.1
4.2
3.93

Maximum Input
Current
(All other Inputs)

'Maximum
iOuiescent
! Supply Current

t,

V
.-

VOH

--------'--------'-1--

V

Current

I

V,=2.4V

Alec

other Inputs:
at Vccor GND
1our=01lA

c8SAMSUNG
ElecbOlics

390·

KS54AHCT
KS74AHCT

682'684'686
,I

AC ELECTRICAL CHARACTERISTICS
Characteristic

8-Bit Magnitude
Comparators

(I

(Input tr •

T. =25°C
Vcc=5.0V

tf~2 n5). AHCT682. AHCT684. AHCT686
KS54AHCT
KS74At:lCT
T. = -40°C to +85°C T. = -55°C to +125°C
Vcc=5.0V:10%
Vcc=5.0V: 10%

Symbol

Condltions t

tpLH

CL=50pF
CL =150pF

17
16

22
27

27
33

tpHL

CL=50pF
CL =150pF

17
16

22
27

27
33

tpLH

CL=50pF
CL =150pF

16
19

27
32

32
38

tpHL

Cl=50pF
CL=150pF

16
19

27
32

32
38

tpLH

CL=50pF
CL=150pF

10
13

16
21

19
25

tpHL

CL=50pF
CL=150pF

10
13

16
21

19
25

tpLH

C=50pF
Cl=150pF

11
14

19
24

23
29

tPHL

CL=50pF
CL =150pF

11
14

19
24

23
29

Typ

Maximum ~gation Delay.
P or 0 to P=O

Propagation Delay.
P or 0 to P>O

E!opagati08 Delay.
G1 to P= (,6860niy)

E!opagation Delay.
G2 to PQ
P Vee +O.5V) ..... ±20 mA
DC Output Diode Current,' .10K
(Vo <-0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Curr:ent Per Pin, 10
(-0.5V < Vo < Vee +O.5V) ......... ±70 mA
Continuous Current Through
Vee or GND pins ................ ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mWt

Recommended -Operating Conditions
Supply Voltage, Vee .. _...... _ .... 4.5V to 5.5V
DC Input & Output Voltages·, VIN, Vour:. OV to Vee
Operating Temperature
KS74AHCT: -40°·C to +85°C
Range
KS54AHCT: -55°C to+125°C
Input Rise & Fall Times, tr , tf _ .. _ . . . .. Max 500 ns

• Absolute Maximum Ratings .are those· values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND) .

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

T. =25°C

KS14AHCT
KS54AHCT
T. = -40°C to +85°C T.=-55°Cto +125°C Unit

Typ
Minimum High-Level
Input Voltage
Maximum Low-Level
Input Voltage
Minimum High-:Level
Output Voltage,
C688 only)

Guaranteed Limits

VIH

2.0

2.0

2.0

V

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee- 0 .1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

IlA

i

VOH

VIN=VIH or VIL
10=-20,.,A
10=-6mA

Maximum Low-Level.
Output Voltage

VOL

VIN=VIH or VIL
10=201lA
10=12mA
10=24mA

Maxiinum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

Maximum Output
Leakage Current
('689 only)

loz

VIN=VIH or VIL
Vour=Vce

±0.5

±5.0

±10.0

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Ice

~Iee

VIN=Vee or GND
10ur=0,.,A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=0,.,A

Vee Vee -0.1
3.98
4.2
0

IlA
.:

i

8.0

80.0

160.0

IlA

2.7

2.9

3.0

mA

:<'";

=8SAMSUNG
Electronics

'39~":

I

KS54AHCT.··.688'
KS74AHCT

1689·

8-8/f Identity. Comparators

/1

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr , t~2 ns), AHCT688

T. =25°C
Vee = 5.0V

Propagation Delay,
Oto p=O

Propagation Delay,
G to P=O

KS54AHCT
T... -55°C to +125°C
Vee=5.0V:t 10%

Condltlons t

tpLH

CL=50pF
CL=150pF

12
15

19
24

23
29

tpHL

CL=50pF
CL=150pF

12
15

19
24

23
29

tpLH

CL=50pF
CL=150pF

12
15

19
24

tpHL

CL.=50pF
CL=150pF

12
15

19
28

23
29

tpLH

(~~150pF

Co =50pF

11
14

17
22

20
26

tPHL

CI.=50pF
CL=150pF

11
14

17
22

20
26

Typ

PrQpagation Delay,
p'to p=O

KS74AHCT
T.... -40·C to +85°C
Vee" 5.0V:t 10%

Symbol

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

Min

Max

Unit

Max

Min

,

23
29

ns

ns

ns

pF

5

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r , tf"2 ns), AHCT689

KS74AHCT
KS54AHCT
T. =25 0 C
T.... -40°C to +85°C T. = -55°C to +125°C
Vee = 5.0V
Vee=5.0V:t 10%
Vee=5.0V:t10%

Symbol

Conditions t

tpLH

CL=50pF
CL =150pF

19
22

28
33

33
39

CL=~pF

CL="50pF

14
17

23
28

28
34

tpLH

CL=50pF
CL=150pF

19

22

28
33

33
39

tPHL

CL=50pF
CL=150pF

14
17

23
28

28

tpLH

CL=50pF
CL=150pF

16
19

23

fJ>Hl

Cl=50pF
Cl=15OpF

11
16

Typ

Propagation Delay,
P to p=O

Propagation Delay,
to P=Q

o

Propagation Delay.
Gto~
Input Capacitance
Power Dissipation Capacitance·

tpHL

CIN
Cpo

Min

5

Max

Min

Unit

Max

ns

ns

34

28

27
33

18

22

23

28

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: PD=CPO VccJ fin.
test circuits and timing. waveforms see section 2.

t For AC switching

c8 SAlliSUNG
EJectroncs

394

KS54AHCT
KS74AHCT

7931794
I,

8-Bit Latch/Register

with. Readback

FEATURES

DESCRIPTION

• I/O port configuration enables output data back onto
input bus
• Latch ('793) and and Register (,794) options
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with drive ,current
(IOL 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for. operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These are 8-bit latches/registers that allow temporary
storage and retriev~1 of data on a bus, This operation is
important in control algorithms which make decisions based on the previous status of output controls. Rather than
storing a redundant copy of the output data in memory,
simply reading the register as an I/O port allows the data
to be retrieved from where it has been stored in a '793
or '794, for verification and/or updating.

=

=

The Data is loaded in the registers on the positive-edge
of the clock (ClK) for the '794. The data is passed through
the '793 when E is high, and it is latched when E goes low.
The output control (OC) is used to erable data on the DO-D7
pins. when OC is low the output of the latches/registers
is enabled on DO-D7, enabling 0 as an output bus so that
the host can perform a read operation. When OC is high,
DO-07 are inputs to the latches/registors configuring D ·as
an input bus.
These devices provide speeds and drive capability
equivalent to their AlSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATIONS
'793
OC

Vee

DO

00

01

01

02

02

03

03

04

04

05

05

06

06

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLES
'793

07
E

E

OC

Q

D

L
L
Ht
H

L
H
L
H

00**
00**
0*
D

Output, 0
Input
Output, 0*
Input

In this case the output of the latch feeds the input, and
a "race" condition results.
* * 00 represents the previous "latched" state.
t This transition is not a normal mode of operation and
may produce hazards.
*

'794

6C

Vrx;

DO

QO

01

01

02

02

D3

Q3

D4
D5

Q5

D6

Q6

D7

07

GND

=8~NG

a..K

"794

eLK

oc

LorHor'LorHor't
t

L

Q

L

00
00
00

H

0

H

D
Output,O
Input
Output,O*
Input

* In this case the output of the regISter is clocked to the
inputs and the overaI Q output is oochauged at 00.

395

I

KS54AHCT;'7931794
KS74AHCT, .

8-Bit, Latch/Register
with Readback

LOGIC DIAGRAMS
'794

'793

DO

(2)

DO

(2)

01 .--:.:;(3;,:..)-'-'---+--+-1

01

(3)

02

(4)

02

(4)

03

(5)

03

(5)

04

(6)

04 _...:..(6..:..)_-'-_-+-+-1

05

(7)

05

(7)

06

(8)

06

(8)

07

(9)

07

(9)

06

(11) E

c8SA~SUNG
Electronics

(11) elK

396

KS54AHCT'793 1794
KS74AHCT
I,

8-Bit Latch/Register

with Readback

Absolute Maximum Ratings*
Supply Voltage Range Vee, ., ..... -0.5V to + 7V
DC Input Diode Current, irK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±70 mA
Continuous Current Through
Vee or GND pins. . . . .
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OIJA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2OIJ A
10=12mA
10=24mA

0.1
0.2,6
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

IrN

VIN=Vee or GND

±0.1

±1.0

±1.0

IJA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

IJA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

IJA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Iee

VIN=Vee or GND
10uT=OIJA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=OIJA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

397

I

~~:~~~~ 793/794

8-Bit· Latch/Register
with Readback

AC ELECTRICAL CHARACTERISTICS (~ .... tr<2 ns). AHCT793. AHCT194
ChaiiCleilsllc

Operating Frequency

f'194

P

onlY)
.

Delage
to Any a (,793 only)

.
Delage
ClKI E to Any a

SJIIIbG

t.nax

CondIIIDnst

OisabIeTme
OCto 0

CL=50pF

60

40

Ct.=5OpF

10
13

16
21

Ct.=50pF

10
13

16
21

Ct.=50pF

12
15

20
25

Ct.=50pF

12
15

ftatL Ct.=150pF
IRH Ct.=15OpF

ftatL Ct.=150pF
tplH I\.=1kO
Ca..=1~
C=L.ow
Ca..=50pF
for
'193)
tpZL
Ca..==15OpF

lin

Ycc=5.0Y;t: 10%

MIn

~-1KO
ftottz Ir-..
50pF
Itu rc-:...L.ow for '793)

tw

o before H ('793)
o before CLKt('194)
o after E' (,793)
o after CLKt (,794)

feu
fh

c..

QJut Capcitance
~ Capacn.1Ce

Coot ~==GND

Power Dissipetion CapacitalICe·

CPO

UnIt

lin

35

MHz
19
25
19
25

ns

ns

20
25

24
30
24
30

11
14

18
23

22
28

11
13

18
23

22
28

11

18

22

11

18

22

I

~

Pulse Width.

HoIdTme

Ycc""S.OY;t:10%

MIn

IRH Ct.=150pF

ClK/C High or low
Setup time

vcc=s.eV

TJP

Ca..=50pF

~Ir.ne.
toO

KS74AHCT
KS54ARtT
IT. ::25-C T.= -40-C
10 +15-C IT. =-55-C 10 +125-C

9

14

19

6

10

12

10

15

20

9

10

12

0

0

0

ns

ns
ns
ns
ns

5

pF

10

pF

ns

• CPO determines the no-load dynamic power dissipation: Po==CPO Va:;z fin·
t For AC switcIW1g test circuits and timilg waveforms see Section 2.

c8SA11SUNG
ElecbOlics

398

KS54AHCT
KS74AHCT

821'822
,~

DESCRIPTION

FEATURES
• Functionally Equivalent to MID's Am29821 and
Am29822

ExIra Data Width Necessary for Wider AddressIData Paths or BuSes with Parity
Poww-Up-itig....mpedance Slate
Function, pilHMll, speed and driwe compatibility with
54174ALS logic family
Low power consumption charact.-istic of CMOS
3-State outputs with high driYe current
(Icx. =24
VOl. =O.5Y) for clreeI bus int.race
Inputs and outputs interface direcIIy with TTl., NMOS
and CMOS deIices
Wide operating 1IOItage range: 4.5Y to 5.5Y
C,haract.-ized. far opa-ation ewer industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +12SoC

• Prowides

•
•

•
•
•

•
•

10-Bit Bus Interface Flip-Flops
with 3-State Outputs

mA.

• Package options include "small outline" packages
(Available Tape It Reel), standard DIPs.

PIN CONFIGURATIONS

These 1O-bit IJus-interhK:e flip-flops featue ttwee-sIale outputs designed speciIicaIIy for driving highly-capacitive or
relatively Iow-impedance loads. They are suitable for implementing wider buffer registers, 1/0 ports, bidirectional
bus drivers with parity, and working registers.

AD of ~ flip-flops are edge-triggered and O-type. On the
positive transition of the clock the
outputs on the '821
will be true, and on the '822 will be complementary to the
data input.

a

A buffered output-control input can be used to place the
ten outpuIs in either a nonnaIlogic slate (tigh or low levels)
or a high-impedance state. The high-impedance state and
increased drive provide the capability to drive the bus lines
in a bus-organized system without need for interface or
pull-up components. The output control (OC) does not affect the internal operation of the flip-flops. Old data can
be retained or new data can be entered while the outputs
are in the high-impedance state.
These devices provide speeds and drive capability
equivalent to their ALSTTL comterparts and yet maintain
CMOS power levels. The input and output voltage levels
aIow direct interface with TTL. NMOS and CMOS devices
without any external components.

AI inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and

'821
Vex:

ground.

10

20
3Q

40
50

sa

6D

70

70

aD

8Q

90
100

90
100

GND

CLJ(

'822

oc

Vex:
10

20
3Q

FUNCTION TABLES
(Each Flip-Flop)

'821

Inputs

Output

OC

ClK

D

Q

L

l
l
l

t
t

H
l

H
L

L
H

00
00

H

X

X
X
X

Z

40

'822

50

sa
70
8Q

9D

100

90
100

GND

CLJ(

c8SAMSUNG
ElecbOlIics

Output

Inputs

oc

ClK

0

Q

l
l
l
l
H

t

H
l

l
H

X
X
X

00
00

t
l
H
X

Z

399

I

10..B;, ,"us Interface ,Flip-Flops
wit/J' 3-State .Outputs
:'(001(: DIAGRAMS

'821
QC

'822

(1)

OC

eLK

(1)

ClK
(23)
10

20

3D

40

50

6D

70

80

90

(2)

(3)

(4),

(5)

(6)

(7)

(8)

(9)

(10)

10

(22)

(21)

(20)

(19)

(18)

(17)

(16)

(15)

(14)
100

(11)

c8SAMSUNG
Electronics

(23)

10

20

30

40

50

60

70

80

90

20

3D

40

50

60

70

80

90

'(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(22)

(21)

(20)

(19)

(18)

(17)

(16)

(15)

(14)

100
100

(11)

10

20

30

40

50

60

70

80

90

100

400

KS54AHCT
KS74AHCT

821'/1822
j'

10-Bit Bus Interface Flip-Flops
with 3-State Outputs

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ...... . -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.6V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±70 mA
Continuous Current Through
Vec or GND pins ....•........... ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee .............. 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: "':'55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vec=5V±10% Unless Otherwise Specified)

T. =25°C
Typ

KS74AHCT
KS54AHCT
T. = -40°C to +85°C T. = - 55°C to + 125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OIlA
10=-6mA,

Vce -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=201lA
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximumlnp'ut
Current

liN

VIN=Vec or GND

±0.1

±1.0

±1.0

IlA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VOUT=VCC or GND

±0.5

±5.0

±10.0

IlA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

IlA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Icc

VIN=Vce or GND
IOUT=OIlA
per input pin
VI=2.4V
other Inputs:
at Vec or GND
lOUT = OIlA

c8SAMSUNG
Electronics
.

Vee Vee -0.1
4.2
3.98
0

401

I

kS54AHCt8211822
,/~

KS74AHCT,

1O-Blt' Suslnf."BceFIIp.Flops
with a-$tBte Outputs_

AC ELECTRICAL CHARACTERISTICS, (Input fr,

K$74AHOT

\

Char.cterlstlc

Symbol

a

Output Enable Time,
to any

oc

a

Output Disable Time,
de to any Q

Condltlona t

Typ

Min

50

35

CL=50pF
'tpLH
CL=150pF

13
16
13
16

tPZL
tPZL

RL=1kO

Max

Min

Max

30

15

MHz

20

18
23
18
23

CL=50pF
CL=150pF

11
14

18
23

28

CL=50pF
CL=150pF

11
14

18
23

13

18

22

13

18

22

CL=50pF
tpHL
CL=150pF

I---

KS54AHOT

T.-25·0
T•• -4O·C to +85"C T._ -5~.<:to +12S·C
Unit
Vcc-S.ov
Vcc-5.0Yz10%
Vcc-S.OYz 10%

CL=50pF _

Maximum Operating Frequency fmax
Propagation Delay
CLK to any

tt<2 ns), AHCT821, AHCT822,

tPHZ RL=1kO
I--, tpLZ CL=50pF

20
15

ns

22
ns

22
28
ns

Pulse Width,
ClK High or low

tw

9

15

18

ns

Setup Time,
Data before ClKt

tau

9

14

17

ns

Hold Time,
Data after ClKt

th

0

0

0

ns

5

pF

Output Capacitance

COUT O~tput Disabled

10

pF

Power DiSSIpation
Capacitance* (per stage)

 Vee +0.5V)
±20 inA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ... , , .. , ±70 mA
Continuous Current Through
Vee or GND pins
' , ,,,. ,,
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt, , , , , , 500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT ' , OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf
, , , , , Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20IJA
'lo=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2OIJ A
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vce or GND

±0.1

±1.0

±1.0

J.lA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

IJA

Maximum Quiescent
Supply Current

lee

8.0

80.0

160.0

IJA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

llice

VIN=Vee or GND
IOUT=OJ.lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
louT=OJ.lA

-c8SAMSUNG
Electronics

Vcc Vce -0.1
3.98
4.2
0

405

I

9-Bit Bus Interface Flip-Flops
with 3-State Outputs

KS54AHCt;'B23/824
KS74AHCT' "
AC ELECTRICAL CHARACTERISTICS
Characteristic

Propagation Delay
ClK to any

a

Propagation Delay,
ClR to Any

a

Min

50

35

CL=50pF
tpLH
CL =150pF

17
20

19
24

23
28

17
20

23
28

17
20

19
24
20
25

25
31

CL=50pF
CL =150pF

11
14

18
23

22
28

CL=50pF
CL=150pF

11
14

18
23

17

20

22
28
25

17

20

25

tpHL

CL=50pF
CL=150pF

tPHL

CL=50pF
CL=150pF

tPZH

Output Disable Time,
OC to any

f-----

RL=1kO

tPZL

,-

tpHZ RL=1kO
tpLZ CL=50pF

a

ClR low

tw
ClK, high or I~~ 1-------f--ClR inactive

Setup
Time before
ClKt

Data

tsu

ClKEN high
or low
f-----'----------Hold Time,
ClKEN or data after ClKt
--~
------

Input Capacitance
Output Capacitance
Power Dissipation
Capacitance* (per stage)

=

KS74AHCT
KS54AHCT
+8SOC T.=-SS·Cto +12S·C
Un"
Vcc=5.0V:10%
Vcc-5.0V: 10%

=-40·C to

Typ

f-----

a

T. =2S·C
T.
Vee S.OV

fmax ' CL=50pF

Output Enable Time,
OC to any

Pulse Width

Condltlonsl

Symbol

Maximum Operating Frequency

(Input tr , tf4t2 ns), AHCT823, AHCT824

th

f--

Max

Min

Max

30

9

15

18

9

15

18

9

14

17

9

14

17

9

14

17

0

0

0

MHz
ns

ns

ns

--

ns

-

ns

ns

ns

1-----

CIN

- - 1------1-

5

COUT Output Disabled

10

OC=Vee
OC=GND

5
30

Cpo

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee'

.

pF
pF
pF
pF

fin,

t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

406

KS54AHCT
KS74AHCT

825/826

FEATURES

DESCRIPTION

• Functionally Equivalent to AMD's Am29825 and
Am29826
• Improved IOH Specifications
• Multiple Output Enables Allow Multiuser Control of
the Interface
• Power-Up High-Impedance State
• Function, pin-out, speed and drive compatibility with
54174ALS .Iogic family
• Low power consumption characteristic of CMOS
3-State outputs with "-igh drive current
(IOl 24 mA@ Val O;5V) for direct bus interface
• •,nputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

=

8-Bit Bus Interface Flip-Flops
with 3-State Outputs

=

PIN CONFIGURATIONS
'825
OC1
OC2
1D
2D
3D
4D
5D
6D

Vee

OC3
10
20
30
40
50
60
70

7D

aD
ClR
GND

These 8-bit flip-flops feature three-state outputs designed
specifically for driving highly capacitive or relatively lowimpedance loads. They are suitable for implementing multiuser buffer registers, I/O ports, bus drivers and working
registers.
With the clock enable (CLKEN) low, all Ootype edgetriggered flip-flops enter data on the low-to-high transition
of the clock. Taking CLKEN high will disable the clock buffer, thus latching the outputs. The '825 has non-inverting
o inputs and the '826 has inverting i5 inputs. Taking the
CLR inputs low causes the eight Q outputs to go low independently of the clock.
Multiuser buffered output-control inputs (OC1, OC2, and
OC3) can be used to place th.e eight outputs in either a
normal logic state (high or low level) or a high-impedance
state. The high-impedance state and increased drive provide the capability to drive the bus lines in a bus-organized
system without need for interface or pull-up components .
The output controls do not affect the internal operation of
the flip-flops. Old data can be retained or new data can
be entered while the outputs are in the high-impedance
state.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels, The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

so
ClKEN
ClK

'826
OC1
OC2
15
25
35
40
50
60
75
s5
ClR
GND

Vee

OC3
10
20
30
40
50
60
70
SO
ClKEN
ClK

c8SAMSUNG
Electronics .

407

II

KS54AHCT~: Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee+0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
........ ±250 mA
Storage Temperature Range, T519 ... -65°C to +150°C
Power Dissipation Per Package, Pdt
... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . .
4.5V to S.5V
DC Input & Output Voltages·, VIN, Vour .. OV teVee
Operating Temperature
Range
KS74AHCT: -40°C to +8SoC
-KS54AHCT: -5SoC to +125°C
Input Rise & Fall Times, tr , tf ......... Max SOO ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=SV± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta = -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20JlA
10= -6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20JlA
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

JlA

Maximum 3-State
Leakage Current

loz

Outp'lt Enable
=VIH
Vour=Vee or GND

±0.5

±5.0

±10.0

IJA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

JlA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.t..lee

VIN=Vee or GND
10ur=OJlA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=OJlA

c8SAMSUNG
Electronics
,

Vee Vce -0.1
4.2
3.98
0

409

I

8-Bit Bus Interface Flip-Flops
with 3·State Outputs
AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Input t r , tf~2 ns), AHCT825, AHCT826

Condltlons t

Maximum Operating Frequency fmax CL=50pF
Propagation Delay
ClK to any

a

~agation

ClR to Any

Delay,

a

Output Enable Time,
OC to any

a

Output Disable Time,
.OC to any

a

Pulse Width

ClR 10....

Input Capacitance
Output Capacitance
Power Dissipation
Capacitance· (per stage)

50

35

Max

Min

Max

30

MHz

17
20

19
24

tpHL

CL=50pF
CL=150pF

17
20

19
24

23
28
23
28.

tPHL

CL=50pF
CL=150pF

12
15

19
22

23
27

CL=50pF
GL=150pF

11
14

18
23

22
28

CL=50pF
CL=150pF

11
14

18
23

22 .
28

13

18

22

13

18

22 -

tPZH

r---- RL=1kO
tPZL
tPHZ RL=1kO
tpLZ CL=50pF

f----

tw

tsu

CLKEN high
or low

Hold Time,
ClKEN or data after ClKt

Min

CL=50pF
CL=150pF

CLR inactive
Data

=

Typ

KS54AHCT
+125°C
Unit
Vee=5.0V± 10%

T.=~55°Cto

tPLH

ClK high or low
Setup
Time before
ClKt

KS74AHCT·
T.=25°C
T.=-400Cto +85°C
Vee = 5.0V
Vee 5.0V ± 10%

th
CIN
COUT Output Disabled
OC=Vcc
Cpo
OC'=GND

9

15

18

9

15

18

9

14

17

9

14

17

9

14

17

0

0

0

-

-.-

ns

r--ns

-.

--

ns

ns
ns

ns

ns

5

pF

10

pF

5
30

pF
pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2

fin-

t For AC switching test circuits and timing waveforms see section 2_

c8SAMSUNG
Electronics

410

KS54AHCT
KS74AHCT

841/842

10-Bit Bus Interface O-Type
Latches with 3-State Outputs

FEATURES

DESCRIPTION

., Bus-Structured Pinout
., Provides Extra Bus Driving Latches
., Necessary for Wider Address/Data Paths or Buses
with Parity
• Power-Up High-Impedance State
• Function, pin-out, speed and drive compatibility with
54174ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL = 24 mA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 1O-bit bus interface latches feature three-state outputs designed specifically for driving highly capacitive or
relatively low-impedance loads. They are suitable for implementing wider buffer registers, I/O ports, bidirectional
bus drivers, and working registers.

PIN CONFIGURATIONS
'841

The ten latches are transparent O-type. The '841 h~
noninverting data (0) inputs and the '842 has inverting (0)
inputs.
A buffered output control (OC) input can be used to place
the ten outputs in either a normal logic state (high or low
levels) or a high-impedance state. The high-impedance
state and increased drive provide the capability to drive
the bus lines in a bus-organized system without need for
interface or pull-up components.
The output control does not affect the internal operation
of the latches. Old data can be retained or new data can
be entered while the outputs are off.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

6C

Vee

10
20
30
40
50
60
70
80
90
100

10
20
30
40
50
60
70
80
90
100

GNO

E

OC

E

0

Q

H
H
L
X

H
L
X
X

H
L

vee

L
L
L
H

'842

oc
10
20
3D
40
50
60
70
8D
90
100

GNO

10
20
30
40
50
60
70
80
90
100
E

c8SAMSUNG
Electronics

FUNCTION TABLES
'841
Inputs

Output

00
Z

'842
Inputs

Output

OC

E

0

Q

L
L
L
H

H
H
L
X

H
L
X
X

L
H

00
Z

411

II

10-Bit Bus Interface D-TYRe
Latches with 3-State Outputs

KS54AHCTS411842
KS74AHCT . . .
LOGIC DIAGRAM S
'841

Oc

'842

(1)

Dc

(1)

E
(23)
(2),

10 -

(22)
20

(3)

20
20

(21)
30

(4)

30
3D

. (20)
(5)

40
40

40

(19)
50

(6)

(7)

(8)

(16)
(9)

70

(10)

c8SAMSUNG
Electronics

(4)

(5)

(6)

(22)

(21)

(20)

(19)

(7)

(8)

(9)

90
90

(14)
(11)

(3)

(17)

(16)

10

20

30

40

50

60

70

80

86

(15)

100

70

80

80

90

(2)

(18)

60
60

(17)

70

50
50

(18)
60

(23)

10

10

(10)

(15)

(14)

100
100

(11)

90

100

412

KS54AHCT
KS74AHCT

841/842

10-Bit Bus. In(fJrface D-Type
Latches with 3-State Outputs'

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to +7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output 'Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 rnA
Continuous Current Through
Vce or GND pins. . . . . . . .
±250 rnA
Storage Temperature Range, T5 tg . . . -65°C to +150°C
Power Dissipation Per Package, Pdt. . . .
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
......... 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf ..
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C
Typ

I

KS74AHCT
KS54AHCT
T = -40°C'to +85°C Ta = -55°C to +125°C Unit

a

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN = VIH or VIL
10=20",A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vec or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

61ee

VIN=Vee or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

c8SAMSUNG
Electronics

Vce Vee -0.1
4.2
3.98
0

413

I

1·0·8i,. Sus/nterface D- Type
Latches with 3-State Outputs
AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Input tr , tf"2 ns), AHCT841, AHCT842

Condltlons t

KS74AHCT
KS54AHCT
T. =25°C
T. = -40°C to +85°C Ta =-550C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V%10%
Vcc=5.0V% 10%

I

Typ

Propagation Delay,
Data to Q

Propagation Delay,
E to any Q

Min

Max

Min'

Max

tpLH

CL=50pF
CL=150pF

10
13

13
21

19
25

tpHL

CL=50pF
CL=150pF

10
13

13
21

19
25

tpLH

CL=50pF
CL=150pF

15
18

24
29

29
35

tPHL

CL=50pF
CL=150pF

15
18

24
29

29
35

CL=50pF
CL =150pF

13
16

18
23

22
28

CL=50pF
CL=150pF

13
16
- -t---.
13

18
23

22
28

18

22

13

18

22

1----.

tPZH

Output Enable Time,
·OC to any a

I----------

Output Disable Time,
OC to any Q

f---

RL=1 kO

tPZL
tpHZ
tpLZ

RL=1 kO
CL=50pF

1------'

ns
--

ns
--

ns

ns

Pulse Width,
E High

.tw

12

20

25

ns

, Setup Time,
Data before E~

tsu

6

10

12

ns

f-----.

,,-

Hold Time,
Data after E~
Input Capcitance
Output Capacitance
Power Dissipation
Capacitance* (per stage)

th

3

CIN

5

pF

COUT Output Disabled

10

pF

OC=Vcc
OC=GND

5
30

pF
pF

Cpo

* Cpo determines the no· load dynamic power dissipation: Po=Cpo VCC 2

5

7

ns

fin.

t For AC switching test circuits and timing waveforms see section 2.

cS2
.
•• SAMSUNG
Electronics

414

KS54AHCT
KS74AHCT

843/844

9-Bit Bus Interface' D~Type
Latches with3-State Outputs

FEATURES

DESCRIPTION

• Bus-Structured Pinout
• Provide Extra Bus Driving Latches
Necessary for Wider Address/Data Paths or Buses
with Parity
• Power-Up High Impedance
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOl = 24 mA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 9-bit bus interface latches feature three-state outputs designed specifically for driving highly capacitive or
relatively low-impedance loads. They are suitable for implementing wider buffer registers, I/O ports, bidirectional
bus drivers and working registers.

'843
6C

Vee

10
20
3D
40

70
80
90

10
20
30
40
50
60
70
80
90

CLR

PRE

GNO

E

'844

be
10
20
30
40
50
60
70
85
90

Vee

10
20
30
40
50
60
70
80
90

CCR

PRE

GNO

E

c8SAMSUNG
Electronics

A buffered output control (DC) input can be used to place
the nine outputs in either a normal logic state (high or low
levels) or a high-impedance state. The high-impedance
state and increased drive provide the capability to drive
the bus lines in a bus-organized system without need for
interface or pull-up components.
The output control (OC) does not affect the internal operation of the flip-flops. Old data can be retained or new data
can be entered while the outputs are off.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATIONS

•

The nine latches are transparent Ootype. The '843 has
non inverting data (0) inputs and the '844 has inverting 5
inputs.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

FUNCTION TABLES
'843
INPUTS

OUTPUT

PRE

CLR

OC

E

D

Q

L
H
H
H
H

X
L
H
H
H

L
L
L

X
X

X
X

H
L

H
H

L
H

H

X

X

L
X

X
X

L
L
H

L

00
Z

. '844
INPUTS

OUTPUT

PRE

CLR

OC

E

D

Q

L
H
H
H
H

X

L

X

L

X

X
X

H

L
H

H
H

L
H

H
L

H

X

L
X

X
X

00

X

L
L
L
H

H

L

Z

415

I

9-Bit Bus Interface'O-Type
Latches with"3-Sfate Outputs
LOGIC DIAGRAMS
'844

'843

00

~(~1)____~.>

____~__- .

PRE (:..:.1.;:.4)-,.-~~()-

(2)

(23) 10

(3)

(22) 2Q

20

(22)20

(4)

(21) 30

3D

(21) 30

(5)

(20) 40

40

(20) 40

(6)

(19) 50

50

(19) 50

(7)

(18) 60

60

(8)

(17) 70

7D

(17) 70

(9)

(16) 80

80

(16) 80

90 (10)

(15) 90

10

20

30

40

50

60

70

80

c8SAMSUNG
Electronics

(23) 10

(18) 60

(15) 90

416

KS54AHCT
KS74AHCT

843'1844
Ij

9-Bit Bus Interface D-Type
Latches with 3-State Outputs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, . .
-d.5V to +7V
DC Input Diode Current, ',K
(V, < -0.5V or V, > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vce or GND pins, .... , . , .. ,
±250 mA
Storage Temperature Range, T5 tg . . . -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vec .. ,
4.5V to 5.5V
DC Input & Output Voltages·, V'N, VOUT .. OV to Vcc
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHC~ -55°C~ +125°C
Input Rise & Fall Times, tr , tf ' ....... , Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74AHCT
KS54AHCT
Ta =-40°Cto +85°C Ta = -55°C to + 125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

V,H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V,L

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

V'N=V'H or V,L
10=-20JJA
10= -6mA

Vce -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

V,N=V,H or V,L
10=20JJA
10=12mA
10=24mA

0.1
"",,' 0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

V'N=Vec or GND

±0.1

±1.0

±1.0

JJA

Maximum 3-State
Leakage Current

loz

Output Enable
=V'H
VouT=Vce or GND

±0.5

±5.0

±10.0

J.lA

8.0

80.0

160.0

JJA

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
r---

Additional Worst
Case Supply
Current

Icc

~r----

~Icc

V'N=Vee or GND

- 10uT=OJJA

Vcc Vcc -0.1
4.2
3.98

0

~

per input pin
V,=2.4V
other Inputs:
at Vee or GND
10uT=0",A

cKSAMSUNG

417

KS54AHCT
KS74AHCT

8431844
I~,

AC ELECTRICAL CHARACTERISTICS
Chlrlcterlltlc

Symbol

Condltlonl t

9-Bit Bus Interface D-Type
Latches with 3-State Outputs
(Input t" t,<2 ns), AHCT843, AHCT844
KS74AHCT
KSS4AHCT
T. -25·C
T•• -40·C to +8S·C T•• -ss·c to +12S·C
Unit
Ycc-5.0Y
Ycc-S.OYz10%
Ycc-5.0Vz 10%
Typ

Propagation Delay,
Data to

a

Propagation Delay,
E to any 0
Propagation Delay,
PRE to 0
Propagation Delay,
CLA to 0
Output Enable Time,

oc to any 0

6utput Disable Time,

OC to any 0

-

Min

MIX

Min

MIX

tpLH

CL=50pF
CL=150pF

13
16

18
23

22
28

tpHL

CL= 50pF
CL=150pF

13
16

18
23

22
28

tPLH

CL=50pF
CL=150pF

16
19

26
31

31
31

tpHL

CL=50pF
CL=150pF

16
19

26
31

31
37

tPLH

CL=50pF
CL=150pF

17
20

27
32

32
38

ns

tpHL

CL=50pF
CL=150pF

17
20

27
32

32
38

ns

CL=50pF
CL=150pF

11
14

18
23

22
28

CL=50pF
CL=150pF

11
14

18
23

22
28

tPZL
RL=1kO
tPZL
tPHZ

f---

tpLZ

RL=1.kO
CL=50pF

13

18

22

13

18

22

ns

ns

ns

ns

Pulse Width,
E High

tw

12

20

25

ns

Setup Time,'
Data before E+

tsu

8

10

12

ns

Hold Time,
Data atter +

th

3

5

7

ns

f--

Input Capacitance
Output CapaCitance
Power Dissipation
Capacltance* (per stage)

C'N
COUT
Cpo

5

pF

Output Disabled

10

pF

OC=Vcc
OO=GND

5
30

pF

• CPD determines the no-load dynamic power dissipation: Po=Cpo VCC 3

fin,

t For AC switching test circuits and timing wavetorms see section 2.

c8SAMSUNG
EIAt'!trnnit'!Q

418

KS54AHCT
KS74AHCT

845/846
.

8-Bit Bus Interface O-Type
Latches with 3-State Outputs

FEATURE

DESCRIPTION

• 3-state buffer-type outputs drive bus-lines directly
• Bus-structured pinout
• Provides extra bus driving latches necessary for
wider address/data paths or buses with parity
• Low power consumption characteristic of CMOS
devices
• 3-state outputs with high drive current (loL = 24mA
@ VOL = O.5V) for direct bus interface
• Direct interface capability with TTL, NMOS and
CMOS devices
• Wide operating volage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54AHCT: -55°C to 125°C

These 8-bit latches feature three-state outputs designed
specifically for driving highly capacitive or relatively low impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers,
and working registers.

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATIONS

The eight latches are transparent D-type. The '845 has
noninverting data{D) inputs. The '846 has inverting D inputs. Since CLR and PRE are independent of the clock,
taking the CLR input low will cause the eight Q outputs to
go low. Taking the PRE input low will cause the eight Q
outputs to go high. When both PRE and CLR are taken low,
the outputs will follow the preset condition.
The buffered output control inputs (OC1, OC2, and OC3)
can be used to place the eight outputs in either a normal
logic state (high or low levels) or a high-impedance state.
In the high-impedance state, the outputs neither load nor
drive the bus lines significantly. The high-impendance state
and increased drive provide the capability to drive the bus
lines in a bus-organized system without need for interface
or pull-up components. The output controls do not affect
the internal operation of the latches. Old data can be retained or new data can be entered while the outputs are
in the high-impedance state.

'845
OC1
OC2
10
20
3D
40
50
60

Vcr;

OC3
10
20
30
40
50
60
70
SO

19
SO

ern

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vec and
ground.

PRE

GNO

E

'846
Vcr;
~3

5D

10
20
30
40
50

e6

eo

7D
sD

70
80

~

PRE

GNO

E

419

I

KS54AHCT
KS74AHCT

845/846

FUNCTION TABLE
PRE CLR
H
L
L
H
H
H
X
X
X

L
H
L
H
H
H
X
X
X

INPUTS
OC1 OC2
L
L
L
L
L
L
X
X
H

8-Bit Bus Interface D-Type
Latches with 3-State Outputs
'846

'845

OUTPUT
OC3

E

0

Q

PRE

L
L
L

L
L
L

L
L

L
L
L

X
X'
X
H
H
L
X
X
X

X
X
X
L
H
X
X
X
X

H
L
H
L
H

L
H
L
H
H
H
X
X
X

L
X
H
X

H
X
X

00
Z
Z
Z

INPUTS
CLR OC1 OC2

OC3

E

D

Q

L
L
L

L
L
L

X
X
X
H
H
L
X
X
X

X
X
X

H
L
H
H
L

H
L
L
H
H
H
X
X
X

L
L
L

OUTPUT

L

L

L

L
L
X
X
H

L
L
X
H
X

L

L
H
X
X

L
H
X
X
X
X

00
Z
Z
Z

LOGIC DIAGRAMS
'846

OC1-1.!.L-----,
OC2------ Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Clirrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . . . .
±70 rnA
Continuous Current Through
Vee or GND pins
....... ±250 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc .............. 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vec
Operating Temperature
KS74AHCT: -40°C to +85°C
Range
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . .. Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vce=5V± 10% Unless Otherwise Specified)

Ta =2S0C

Symbol Test Conditions

Typ

KS54AHCT
KS74AHCT
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/AA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O /AA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

/AA

Maximum Quiescent
Supply Current

Icc

VIN=Vee or GND
louT=O/AA

8.0

80.0

160.0

/AA

Additional Worst
Case Supply
Current

per input in
VI=2.4V
1I. Iec other Inputs:
at Vee or GND
10uT=0/AA

2.7

2.9

3.0

mA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

421

II

KS54AHCT
KS7·4AHCT

8451846

8-Bit'Buslnterface D-Type
Latches with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons l

(Input t r ,

T.=25°C
Vcc=5.0V

tf~2 ns), AHCT845
KS74AHCT
T.= -40°C to +85°C
Vee= 5.0V:!: 10%

Typ

Max

Min

13

22

26

tpHL

13

22

26

r-------

Propagatlo Delay
D to

r-------

Propagation Delay
CLR to Q

r-------

I Propagation Delay
: PRE to Q

r-------

Unit

Max

tPLH

Propagation Delay
E toO

ns

tpLH

8

15

20

tPHL

8

15

20

tPLH

16

26

31

tPHL

16

26

31

tpLH

16

26

31

tpHL

16

26

31

tPZH

·12

20

24

tPZL

12

20

24

tpHZ

12

20

24

tpLZ

12

20

24

tsu

8

10

12

ns

th

0

0

0

ns

Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

a

,

I

Min

KS54AHCT
T.= -55°C to +125°C
Vec=5.0V:!: 10%

Output Enable Time
OC to Q

r-------

Output Disable Time
OC to Q

r-------

Set up Time
Dn before E
Hold Time
Dn after E

ns

ns

ns

ns

ns

pF

--

pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC! fin,
t For AC switching test circuits and timing waveforms see section 2,

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltions l

(Input tr ,

T.=25°C
Vee=5.0V

tf~2 ns), AHCT846
KS74AHCT
To= -40°C to +85°C
Vee=5.0V±10%

1------ -

Typ

i

Propagation Delay
E to Q

rE,ropagation Delay
D to Q

Max

Min

Max

tPLH

14

24

32

tpHL

14

24

32

f--------- .-

tpLH

10

17

22

tPHL

10

17

22

r-------

Unit

ns

ns

13

22

26

tpHL

13

22

26

tpLH

13

22

26

tpHL

13

22

26

tPZH

12

20

24

tPZL

12

20

24

tpHZ

12

20

24

tpLZ

12

20

24

tsu

8

10

12

ns

th

0

0

0

ns

Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

Propagation Delay
CLR to Q
!----------i Propagation

PRE to

a

Delay

tpLH

r-------

r-------

Output Enable Time
OC to Q

r----

Output Disable Time
OC to Q

r----

Set up Time
Dn before E
Hold Time
Dn after E

I

Min

KS54AHCT
To= -55°C to +125°C
Vee=5.0V:!: 10%

f--._-- --

--

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee l

ns

ns

ns

ns

pF
pF
fin,

t For AC switching test circuits and timing waveforms see section 2,

c8SAMSUNG
Electronics

422

KS54AHCT
KS74AHCT

4049'4050
'j

Hex Logic Level
Down Converters

FEATURES

DESCRIPTION

• Modified Input structure allows voltages up to 1SV
• Hlgh-Drlve-current Outputs:
IOL=8mA @ VOL=O.SV
• Low power consumption characteristic of CMOS
• Inputs and outputs Interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.SV to S.SV
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +8SoC
KSS4AHCT: - SsoC to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '4049 and '4050 have a modified input protection
structure that enable them to be used as logic level
translators which will convert high level logic to a low level
logic while operating from the low logic supply. For exam·
pie, 0·15V logic can be corverted to 0·5V logic when using a 5V supply. The modified input protection has no diode
connected to Vee. thus allowing the input voltage to exceed the supply. The lower zener diode protects the input from both positive and negative static voltages. In
addition the' 4049 and' 4050 can be used as simple buffersor inverters without level translation.
These devices provide speeds and drive capability
equivalent to their ALSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL. NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

LOGIC DIAGRAMS
'4049
NC

Vee

6Y

1Y
1A
2Y
2A

6A
NC

5Y

3Y

5A

~ lY

lA~.

~ 2V
2A~-V-

~
3A - - - - y v - - 3Y
~~

3A

4Y

404 - - - - - y v - - 4V

GND

4A

J~21J"_.~
504 - - - - y v - - 5Y

~
SA-----yv--SV

'40S0

lA~IV

FUNCTION TABLE

2A~2Y
3A~3V
4A~4V

Output Y

Input
A

'4049

'40S0

H
L

L
H

H
L

c8SAMSUNG
Electronics

~.~
112ll_

5A~5V

6A~6V

423

II

KSS4AHCT
KS74AHCT

404914050

Hex Logic Level

Down Converters

Absolute Maximum Ratings·
Supply Voltage Range Vee •....... -0.5V to +7V
DC Input Diode Current. hK
(VI < -0.5V or VI >' + 15.5V) '- ..... ±20 mA
DC Output Diode Current. "Ioi<'
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins ................ ±125 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vec .............. 4.5V to 5.5V
DC Input & Output Voltages". VIN. VOUT . . OV to Vee
Operating Temperature
Range
. KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times. tr • tf . . . . . . . . . Max 500 ns

.. Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long ex- .
posure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logiC
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

T. =25°C

KS74AHCT
KS54AHCT
T.= -40°C to +85°C Ta = -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20IAA
10=-4mA

Vcc -0.1
3.84

Vec -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL .
10=20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

Maximum Input
Current

liN

iV 1N=15V

±0.1

±1.0
±10.0

.±TO.O

",A

2.0

20.0

40.0

flA

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

!ce

.6. Icc

Vcc Vcc -0.1
4.2
3.98
0

VIN=Vce or GND
VIN=Vee or GND
10UT=0",A
per input pin
VI=2.4V
other Inputs:
at Vec or GND
lOUT = O",A

I

(Input tr , tf~2 ns)., AHCT4049, AHCT4050

=

T. 250C
T.
Symbol Conditions t Vcc=5.0V

KS54AHCT
KS74AHCT
+ 85°C Ta -55°C to +125°C
Unit
Vcc=5.0Vj: 10%
Vee = 5.0V j: 10%

Propagation Delay

-

CL =50pF

tpHL
Input Capacitance

CIN

Powell;Dissipation Capacitance *

Cpo

(per gate)

=

= - 40°C to

Typ
tpLH

±1.0

i

AC ELECTRICAL CHARACTERISTICS
Characteristic

V

Min

Max

Min

Max

7

12

14

7

12

14

ns

5

pF

15

pF

* Cpo determines the no-load dynamiC power diSSipation: Po=Cpo Vee 2 fin·
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
.. Electronics

424

I

il
I

II.

I~

I

KS54HCTLS
KS74HCTLS

00

Quad 2-lnput NAND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
'IOL SmA @ VOL O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +S5°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2·input NAND
gates that perform the Boolean functions Y=A. B or

=

=

PIN CONI=IGURATION

Y=A+B.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM
1A~
18~

1A

.1Y

Vee

18

48

1Y

4A

2A

4Y

28

,38

2Y

3A

GND

3Y

2A~

28~2Y

3A~(9)
(8)
(10)

II

3Y

38

4A~

48~···4Y

FUNCTION TABLE
(Each Gate)
Inputs

Output

Y

A

B

H

H

L

L
X

X
L

H
H

c8SAMSUNG
Electronics

427

KS54HCTLS
KS74HCTLS

00

Quad 2 ../nput NAND Gates

Absolute Maximum Ratlngs*
t Power DIssipation temperature derating:

Supply Voltage Range Vee, .... . . . -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V) ..... ±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) .......... ±35 rnA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 125 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN,. VOUT . . OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee-5V± 10% Unless Otherwise Specified)

T.=25°C

Symbol Test Conditions

KS74HCTLS
KS54HCTLS
T.= -40°C to +85°C T.= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OIlA
lo=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum' Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=201lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

IlA

2.0

20.0

40.0

IlA

2.7

2.9

3.0

rnA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

.6. Icc

Vee Vee -0.1
4.2
3.98
0

VIN=Vee or GND
IOUT=OIlA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
IOUT=OIlA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r , tf~6 ns). HCTLSOO

T.=25°C
Vcc=5.0V

KS74 HCTLS
T.= -40°C to +85°C
Vcc=5.0V±10%

Typ

Maximum Propagation Delay

-

tpLH

CL=50pF

tpHL
Maximum Input Capacitance

CIN

Power Dissipation Capacitance·

Cpo

15

18

22

10

15

18

22

c8SAMSUNG'
Electronics

ns
pF
pF

15

Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee z
t For AC switching test circuits and timing waveforms see section 2.
~

Unit

Guaranteed Limits

10
5

(per gate)

KS54HCTLS
T.=-55°Cto +125°C
Vcc=5.0V± 10%

fin.

428

KS54HCTLS
KS74HCTLS

01

Quad 2-lnput NAND Gates
with Open-Drain Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L = 8mA @ VOL = O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial· and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2·input NAND
gates with open·drain outputs. Using a suitable pull-up
resistor, these outputs may be connected to other opendrain outputs to implement wired-AND functions.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direcUnterface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

(1.4,10,13)
1Y

Vee

1A

4Y

18

48

2Y

4A

2A

3Y

28

38

GND

3A

: ,2 5 11'D--{>o-ir
8,

y

I

(3,6,9,12)

FUNCTION TABLE
(Each Gate)
Inputs

Output

A

B

H

H

L

L
X

X
L

H
H

cRSAMSUNG

Y

429

01

KS54HCTLS
KS74HCTLS

Quad 2-lnput NANDt;;stes.
with Open~Drain Outputs-

Absolute Maximum Ratings·
t Power Dissipation temperature derating:

Supply Voltage Range Vcc, ... . . . . -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI> Vce +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . .
±35 mA
Continuous Current Through
Vee or GND pins . . . . . .
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce . . . . . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: - 55 ° C to + 125 ° C
Max 500 ns
Input Rise & Fall Times, tr , tf

• Absolute Maximum Ratings are those· values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Maximum Low-Level
Output Voltage

VOL

ViN=VIH or VIL
10=20J.(A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current -

hN

VIN=Vec or GND

±0.1

±1.0

±1.0

J.(A

Maximum Output
Leakage Current

loz

VIN=VIH or VIL
VouT=Vec

±0.5

±5.0

±10.0

J.(A

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

J.(A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Ll.lee

0

VIN=Vec or GND
10UT=0J.(A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0J.(A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlonst

(Input t r , tf~6 ns), HCTLS01

T.=25°C
Vcc=5.0V

KS74HCTLS
T. = - 40°C to + 85°C
Vcc=5.0V:!:10%

Typ

Maximum Propagation Delay

-

tpLH
tpHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance·

Cpo

CL=50pF
RL=1kO
(per gate)

KS54 HCTLS
Ta= -55°C to +125°C
Vcc=5.0V± 10%

Unit

Guaranteed Limits

24

30

36

43

15

20

25

30

ns

5

pF

15

pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

cRSAMSUNG

430

KS54HCTLS a~
KS74HCTLS

Quad 2-lnput NOR Gates

FEATURES

DESCRIPTION

• Function, pln-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• Hlgh-Drlve-Current outputs:
IOL 8mA @ VOL O.5V
• Inputs and outputs Interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLSc -55°C to +125°C
- Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2·input NOR gates
that perform the Boolean functions Y=A+B or Y=A-S.

PIN CONFIGURATION

LOGIC DIAGRAM

=

=

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

(2)

1A

Vee
4Y

18

48

2Y

4A

1Y

2A

3Y

28

3B

GND

3A

1A~1Y

1B~
2A~5)
(6)
(4)

I

2Y

28
(8)

3A~3Y

3B~

4A~

4B~4Y

FUNCTION TABLE
(Each Gate)
Inputs
I
------B
A
H

X

X

H
L

L

Output

cRSAMSUNG

Y
L
L
H

431

KS54HCTLS
KS74HCTLS

02.

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vee, ........ -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . .
±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee .............. 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vec
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vce or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

T.=25°C

Symbol Test Conditions

KS74HCTLS
KS54HCTLS
T.= -40°C to +85°C T.= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vee -0.1
3.84

Vec -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

",A

2.0

20.0

40.0

",A

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

~Icc

Vee Vee -0.1
3.98
4.2
0

VIN=Vce or GND
10UT=0",A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
lOUT = o",A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input t r , tf~6 ns), HCTLS02

T.=25°C
Vee=5.0V

KS74HCTLS
T.= -40°C to +85°C
Vee 5.0V::I: 10%

=

Typ

Maximum Propagation Delay

tpLH

f---

CL=50pF

tpHL
Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

9
10

KS541HCTLS
+125°C
Vee=5.0V::I: 10%

=-55°C to

Unit

Guaranteed limits

15

18

22

15

18

22

5
(per gate)

T.

pF

15

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2

ns

pF
fin.

t For AC switchi.ng test circuits and timing waveforms see section 2.

·cRSAMSUNG

432

KS54HCTLS
KS74HCTLS

03

Quad 2-lnput NAND Gates
with Open-Drain Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current Outputs:
IOL =8mA @ VOL = O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54t:tCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2-input NAND
gates with open-drain outputs. Using a suitable pull-up
resistor, these outputs may be connected to other opendrain outputs to implement wired-AND functions.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

LOGIC DIAGRAM

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

(3.6,8,11)
1A

Vee

18

48

1Y

4A

2A

4Y

28

38

2Y

3A

GND

3Y

;

(1,4,9,12)D----[>o:--1~Y
(2,5,10, 13)

~

I

FUNCTION TABLE

(Each Gate)
Inputs

Output

A

B

Y

H
L
X

H
X
L

L
H
H

dCSAMSUNG
• • Electronics

433

KS54HCTLS
KS74HCTLS

03

Quad 2-lnputNAND Gates
with Open-Drain Outputs

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, hK
(VI"< ,0.5V or VI> Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Va > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Thro.ugh
Vec or GND pins
±125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vce
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VauT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
... Max 500 ns
Input Rise & Fall Times, t r , tf
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

* Absolute Maximum' Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)

J'!;

- °
KS74HCTLS ~~.KS54HCTLS
~a.-25 C_ T~_:-40o~_~_+850C Ta=...:-550C !~.:!'"~ Unit
Typ

Minimum High-Level
Input Voltage
r- ---..-----.... -. ----.--.--

Guaranteed limits

Maximum Low-Level
Input Voltage

2.0

2.0

VIH
f------- r----

..

_- f - - - - - - ..- - - -.. -

2.0

V

f---

0.8

0.8

0.8

V

10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=VCC or GND

±0.1

±l.O

±1.0

~A

VIN=VIH or VIL
VOUT=VCC

±0.5

±5.0

±10.0

~A

20.0

40.0

~A

2.9

3.0

mA

VIL
1----

VIN=VIH or VIL
Maximum Low-Level
Output Voltage
~-------~

Maximum Input
Current
-~~------

Maximum Output
Leakage Current
r--~------~

Maximum Quiescent
Supply Current
r-------.-.~------

Additional Worst
Case Supply
Current

10=20~A

VOL
- .. ---- ---f--

hN

0

----

f--------~~--~

f---

--

loz

f - - - - - - t--

Icc
._----------

b.lcc

VIN=VCC or GND
10uT=0~A

2.0
---

per input pin
VI=2.4V
other Inputs:
at Vcc or GND

+----

2.7

lauT=O~A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r , tf~6 ns), HCTLS03

Ta ::25°C
Vec=5.0V

Ta

KS741HCTLS
to +85°C
Vee= 5.0V:!: 10%

-= -40°C

Typ

Maximum Propagation Delay

tpLH
CL=50pF
r-----RL=1kO
tpHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per gate)

KS54 HCTLS
Ta= -55°C to +125°C
Vee=5.0V:!: 10%

Unit

Guaranteed Limits

24

28

15

28

30
30

38

ns

38

5

pF

15

pF

* CPD determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.

t For AC switching test circuits and timing waveforms see section 2.

cRSAMSUNG
• • Electronics

434

KS54HCTLS
KS74HCTLS

04

Hex Inverters

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C

These devices contain six independent inverters. They perform the Boolean function Y = A .
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

LOGIC DIAGRAM

PIN CONFIGURATION

~-

lA

Vee

lY

6A

2A

6Y

2Y

5A

3A

5Y

3Y

4A

GND

4Y

lA~lY

2A

~
~

2Y

I

f'..-..

3Ai5)
(6)
~3Y

4A~4Y
~(10)

5A~5Y
~~(12)
6A~6Y

FUNCTION TABLE

(Each Inverter)

I

i

Input

Output

A

y

H
L

L
H

c8SAMSUNG
Electronics

435

04

KS54HCTLS
KS74HCTLS

Hex Inverters

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ....... -0.5V to +7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
... Max 500 ns
Input Rise & Fall Times, tr , tf ..
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyondJhem is not implied. Long exposure to these conditions may affect device reUability.

DC ELECTRICAL CHARkCTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V± 10% Unless Otherwise Specified)

Ta =25°C

KS74HCTLS
KS54HCTLS
Ta = -40°C to +85°C Ta = - 55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10 = 20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

IrN

VIN=VCC or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Dolcc

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10uT=0",A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr , tf~6 ns), HCTLS04

Ta =25°C
Vcc=5.0V

KS741HCTLS
Ta= -40°C to +85°C
Vcc=5.0V:t:10%

Typ
I

Maximum Propagation Delay

tpLH

f----

CL=50pF

tpHL
,Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

Unit

Guaranteed limits

9

15

18

22

10

15

,,18 ,

22
pF

15

* Cpo determines the no-load dynamic power dissipation: PO=CPD VCC 2

ns
pF

5
(per gate)

KS54 HCTLS
Ta=-55°C to +125°C
Vcc,=5.0V:t: 10%

fin,

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

436

KS54HCTLS
KS74HCTLS

05

Hex Inverters with Open-Drain O·utputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interfSlce directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "sma" outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain six independent inverters with open·
drain outputs. Using a suitable pull·up resistor, these out·
puts may be connected to other open·drain outputs to im·
plement wired-AND functions.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

LOGIC DIAGRAM

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

(2,4,6,8,10,12)
lA

Vee

1Y

6A

2A

6Y

2Y

SA

3A

SY

3Y

4A

GND

4Y

AI~rY

I

-=-

r=UNCTION TABLE

(Each Inverter)
Input

Output

A

y

H
L

L
H

.c'SAMSUNG
"C E .
lectronlcs

437

KS54HCTLS
KS74HCTLS

05

Hex Inverters with Open-Drain Outputs

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, . .
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI> Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per .Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±35 rnA
Continuous Current Through
Vee or GND pins
± 1 25 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt . .
500 mW

Recommended Operating Conditions
Supply Voltage, Vee . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, tr , tl

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage .to the device may occur.
These are stress ratings only and functional operation
of the device at or beybnd them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS

(Vee=5V± 10% Unless Otherwise Specified)
°

Characteristic

Symbol Test Conditions

_1,

KS74HCTLS
KS54HCTLS
+85°C Ta= ~55°C to +125°C Unit
Guaranteed Limits

~:..:.25_~ T~_= -:.~00C to
Typ

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Maximum Low-Level
Output Voltage

VOL

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

j.lA

loz

VIN=VIH or VIL
VouT=Vee

0

-----

Maximum Output
Leakage Current
Maximum Quiescent
Supply Current

Icc

c--------.

Additional Worst
Case Supply
Current

VIN=VIH or VIL
10=20j.lA
10=4mA
10=8mA

.6. Icc

VIN=Vee or GND
10uT=0j.lA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND.
10uT=0j.lA

±0.5

±5.0

±10.0

j.lA

2.0

20.0

40.0

j.lA

2.7

2.9

3.0

mA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr , tl~6 0"5), HCTLS05

To =25°C
Vcc=5.0V

KS74HCnS
Ta=-40°C to +85°C
Vcc=5.0V±10%

Typ

Maximum Propagation Delay

tpLH

~

tpHL
Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

CL=50pF
RL=1kO

Unit

Guaranteed Limits

24

30

36

43

16

22

28

33

5
(per gate)

KS54 HCnS
To= -55°C to +125°C
Vcc=5.0V± 10%

..

15

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2

-

ns

I

pF

I

pF
fin.

t For AC switching test circuits and timing waveforms see section 2.

=SAMSUNG
•• EI~ctronics

438

08

KS54HCTLS
KS74HCTLS

Quad 2-lnput AND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Orive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2-input AND gates.
They perform the Boolean functions Y=A.B or Y=A+B.

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM
1A~-..i3)

1A

Vee

1B

4B

1Y

4A

2A

4Y

2B

3B

2Y

3A

GND

3Y

1B~1Y

2A~

2B~2Y

I

3A~_

3B~3Y

4A~

4B~-4Y

FUNCTION TABLE

(Each Gate)
Inputs

1'1

Output

A

B

Y

H
L

H

X

X

L

H
L
L

c8SAMSUNG
Electronics

439

KS54HCTLS
KS74HCTLS

08

Quad 2-lnput AND Gates

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ....... -0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
.. ± 125 mA
Storage Temperature Range, Tst9 ... -65°C to +150°C
Power Dissipation Per Package, Pdt'
500 mW

Recommended Operating Conditions
Supply Voltage, Vee . . . . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vcc
Operating temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf
.. Max 500 ns
Unused inputs must always be tied to an appropriate logiC
voltage level (either Vce or GND)

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vec=5V± 1 0% Unless Otherwise Specified)

Ta =25°C
1--,-----

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vee -0.1
3.84

Vce -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

",A

2.0

20.0

40.0

",A

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

.6.lee

Vee Vee -0.1
4.2
3.98
0

VIN=Vee or GND
10uT=0}JA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
louT=O",A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr , tf~6 ns), HCTLS08

Ta =25°C
Vcc=5.0V

KS74 HCTLS
T.= -40°C to +85°C
Vcc=S.OV±10%

Typ
Maximum Propagation Delay

tpLH

I-----

CL=50pF

tpHL
Maximum Input Capacitance

CIN

Power Dissipation Capacitance·

Cpo

Guaranteed Limits

10

15

10

20

22

25

30

ns
pF

15

• Cpo determines the no-load dynamic power dissipation: PO=CPD Vee 2
. t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics
.

18
---

5
(per gate)

KS54HCTLS
Ta =-55°Cto +125°C
Unit
Vcc=5.0V± 10%

pF
fin .

440

KS54HCTLS
KS74HCTLS

09

Quad 2-lnput AND Gates
with Open-Drain Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Cur'rent outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V I
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2·input AND gates
with open·drain outputs. Using a suitable pull-up resistor,
these outputs may be connected to other open-drain outputs to implement wired-AND functions.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

LOGIC DIAGRAM

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

r

I

(3.6,8,11)

1A

Vee

18

48

1Y

4A

2A

4Y

28

38

2Y

3A

GND

3Y

:

(1,4,9,12)
(2,5,10,13)

D---1

y

FUNCTION TABLE

(Each Gate)
Inputs

Output

A

B

Y

H
L

H

X

X

L

H
L
L

c8SAMSUNG
.
Electronics

441

KS54HCTLS
KS74HCTLS

09

Quad 2-lnputAND Gates
with Open-Drain Outputs

Absolute Maximum Ratings*
Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vec,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI> Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, T51g ••• -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages *, VIN, Your
OV to Vce
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , t;
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

.Symbol Test Conditions

(Vce=5V± 1 0% Unless Otherwise Specified)

Ta=2S0C
---- --------

J

KS74HCTLS

TYP
Minimum High-Level
Input Voltage
Maximum Low-Level
Input Voltage

----

- - - - - _..

VOL

-

V

0.8

liN

VIN=Vec or GND

0

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

±0.1

±1.0

±1.0

V

/AA
----

----

Maximum Output
Leakage Current

loz

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

0.8

--

--f---

VIN=VIH or VIL
10= 2O/AA
10=4mA
10=8mA

_-_._-

Maximum Input
Current

V

2.0
----~

0.8

VIL

Maximum Low-Level
Output Voltage
-

2.0

- - -- - - 1---------

~-~-----

,

Guaranteed Limits
2.0

VIH

KS54HCTLS

_,.a_:::=~~oC to +85°C Ta= -55°C to +125~~ Unit

.6.lec

VIN=VIH or VIL
Vour=Vec
VIN=VCC or GND
10ur=01-lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=01-lA

±0.5

±5.0

±10.0

2.0

20.0

40.0

2.7

2.9

3.0

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditionst

Maximum Propagation Delay

I-----

tpHL
Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

CL=50pF
RL=1kO

Ta=25°C
Vcc=5.0V

KS741HCTLS
Ta= -40°C to +85°C
Vcc=5.0V±10%

KS54HCTLS
Ta= -55°C to +125°C
Vcc=5.0V± 10%

mA

Unit

Guaranteed Limits

26

32

38

45

16

22

28

33

ns
pF

5
(per gate)

/AA
- - 1-------

(Input t r , tf~6 ns). HCTLS09

Typ

tpLH

/AA
---r-

pF

15

(

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2

fin.

t For AC switching test circuits and timing' waveforms see section 2.

cSaSAMSUNG
•• Electronics

442

KS54HCTLS
KS74HCTLS

10

Triple 3-lnput NAND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74lS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTlS: -40°C to +85°C
KS54HCTlS: - 55°C to + 125°C
- Package options incl4de "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain three independent 3·input NAND
gates. They perform the Boolean functions Y=A-B-C or
y=A+B+C.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

(1)
1A

Vee

18

1C

2A

1Y

28

3C

2C

38

2Y

3A

GNO

3Y

1A~ 1Y
18
1C
2A

113)

I

(3)

28 ~2Y
(5)

2C
(9)

~~~3Y
(11)

3C

FUNCTION TABLE

r-- Inpu~~ ~~J

(Each Gate)

I

__
ABC

H
L
X
X

H
X
L
X

Output

I

H

X
X
L

=SAMSUNG
• • Electronics

y
L
H
H
H

443

KS54HCTLS
KS74HCTLS

10

Triple 3-lnput NAND Gates

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V) . . .. ±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin,lo
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vce or GND pins. . . .
±125 mA
Storage Temperature Range, Tslg ; .. - 65 ° C to + 150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vce
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf

* Absolute Maximum Ratings are those. values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either VyC or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V± 10% Unless Otherwise Specified)

T8 =25°C

Symbol Test Conditions

KS74HCTLS
KS54HCTLS
T8= -40°C to +85°C T8= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

Vil

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or Vil
10=-20/AA
10=-4mA

Vce -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or Vil
lo= 2O /AA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

+1.0

±1.0

/AA

2.0

20.0

40.0

/AA

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

~Icc

Vce Vcc -0.1
4.2
3.98
0

VIN=Vce or GND
lOUT = O/AA
per input pin
V,=2.4V
other Inputs:
at Vee or GND
10uT=0/AA

AC ELECTRICAL CHARACTERISTICS
Symbol

Characteristic

Conditions t

(Input tr , tf~6 ns), HCTLS10

T.=25°C
Vcc=5.0V

KS74 HCTLS
T8= -40°C to +85°C
Vcc=5.0V±10%

Typ
Maximum Propagation Delay

-

tplH

CL=50pF

tpHL
Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per gate)

Guaranteed Limits

11

15

19

23

11

15

19

23

ns

5

pF

15

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vce 2
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

KS541HCTLS
T8=-55°Cto +125°C
Unit
Vcc=5.0V± 10%

fin.

444

11

KS54HCTLS
KS74HCTLS

Triple3-lnput AND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O:5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to + 125°C

These devices contain three independent 3·input AND
gates. They perform the Boolean functions Y=A-B·C or

y=A+B+C.
These devices provide speeds .and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

- Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

LOGIC DIAGRAM

PIN CONFIGURATION

1

1A

Vee

18

1C

2A

1Y

28

3C

2C

38

2Y

3A

GND

3Y

(1)

A~2)
(12)

18 (13)
1C

1Y

(3)

I

2A~4)
(6)
2Y

28
2C

(5)

3A

(9)

38~3Y
3C~

FUNCTION TABLE

(Each Gate)
Inputs

Output

A

B

C

y

H
L

H

H

X

X
X

L

X
X

X

L

H
L
L
L

cS!SAMSUNG
Electronic~
••

445

KS54HCTLS
KS74HCTLS

11

Triple 3-lnput AND Gates

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc,
-0.5Vto +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 rnA
DC Qutput Diode Current, 10K
(Vo < -0.5V or Vo > Vec +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 rnA
Continuous Current Through
Vee or GND pins
. ,,, ,,, ,
± 125 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

ReCommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & OutPl,Jt Voltages·, VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C.
KS54HCTLS: -55°C to + 125°C
Input Rise & Fall Times, tr , tf
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied, Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V± 10% Unless Otherwi,se Specified)

Ta=25°C

Symbol Test Conditions

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ
Minimum High-Level
Input Voltage

VIH

Maximum Low-Level
Input Voltage

VIL

Minimum High-Level
Output Voltage

VOH

2.0

2.0

2.0

V

0.8

0.8

0.8

V

Vcc -0.1
3.84

Vcc -0.1
3.7

V

f---

VIN = VIH or VIL
10=- 2OIJA
10=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2OIJ A
lo=4mA
lo=8mA

Maximum Input
Current

hN

VIN=VCC or GND

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Guaranteed Limits

Icc

61cc

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
10UT=OIJA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10uT=OIJA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

IJA

2.0

20.0

40.0

IJA

2.7

2.9

3.0

rnA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr , tf~6 ns), HCTLS11

T8 =25°C
Vcc=5.0V

KS74HCTLS
T8 = -40°C to +85°C
Vcc=5.0V±10%

Typ

Maximum Propagation Delay

-

tpLH

CL =50pF

tpHL
Maximum Input Capacitance

CIN

Power Dissipation Capacitance·

Cpo

(per gate)

--t---

KS54 HCTLS
T8= -55°C to +125°C
Vcc=5.0V± 10%

Unit

Guaranteed Limits

13

18

22

26

13

18

22

26

ns

5

pF

15

pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

=SAMSUNG
• • Electronics

446

KS54HCTLS
KS74HCTLS

12

Triple 3-lnput NAND Gates
with Open-Drain Outputs

FEATURES

DESCRIPTION

- Function, pin-out, speed and drive compa1ibility with
54174LS logic family
- Low power consumption characteristic of CMOS
- High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
- Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
- Wide operating voltage range: 4.5V to 5.5V
- Characterized for operation over industrial and
military temperature ranges:
KS74HCTlS: -40°C to+85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

-, hese devices contain three independent 3-input NAND
gates with open-drain outputs. They perform the Boolean
functions Y=A-B-C or y=A+B+C.

PIN CONFIGURATION

LOGIC DIAGRAM

1A

Vee

18

1C

2A

1Y

28

3C

2C

38

2Y

3A

GND

3Y

Using a suitable pull-up resistor, these outputs may be connected to other open-drain outputs to implement wired-AND
functions.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

I

A~(1'3'9) rr-(12,6,8)y
(2,4,10)
:

(13,5.11)

FUNCTION TABLE

(Each Gate)
Output

Inputs
A

B

C

y

H

H
X
L
X

H
X
X
L

L
H
H
H

L
X
X

••

=SAMSUNG
• • Electronics

447

II

KS54HCTLS
KS14HCTLS.

12

Triple .3-lnput NAND,.Gates
with Open-Drain Outputs

Absolute Maximum Ratings*
t Power Dissipati()n temperature derating:
Plastic Package (N): -;-12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc •....... -0.5V to +7V
DC Input Diode Current. hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 rnA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 rnA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vcc +0.5V) . . . . . .
±35 rnA
Continuous Current Through
Vec or GND pins . . . . . . . . . . . . . . .. ± 1 25 rnA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage. Vcc
4.5V to 5.5V
DC Input & Output Voltages·. VIN. VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times. tr • tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V±10% Unless Otherwise Specltled)

Ta=25°C

Symbol Test Conditions

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-i..evel
Input Voltage

VIL

0.8

0.8

0.8

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2O/AA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

/AA

Maximum Output
Leakage Current

loz

VIN=VIH or VIL
VOUT=VCC

±0.5

±5.0

±10.0

/AA

2.0

20.0

40.0

/AA

2.7

2.9

3.0

rnA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

0

'vIN=VCC or GND
louT=O/AA
per input pin
VI=2.4V
Ll.lcc other Inputs:
at Vcc or GND
louT=O/AA
Icc

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr • tl";6 ns). HCTLS12

Ta =25°C
Vcc=5_0V

KS74 HCTLS
KS54 HCTLS
Ta= -40°C to +85°C Ta = - 55°C to + 125°C
Unit
Vcc=5_0V± 10%
Vcc=5.0V±10%

Typ
Maximum Propagation Delay

tpLH

t----

tpHL

o

Maximum Input Capacitance

CIN

Power Dissipation Capacitance·

Cpo

CL=50pF
RL =1 kll

(per gate)

Guaranteed Limits

26

32

38

45

16

22

28

33

ns

5

pF

15

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

448

KS54HCTLS
KS74HCTLS

14

Hex Schmitt-Trigger Inverters

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 rnA @ VOL = O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These Schmitt-trigger devices contain six independent inverters. They perform the Boolean function Y=A.

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

lA

Vee

lY

6A

2A

6Y

2Y

5A

3A

5Y

3Y

4A

GND

4Y

lA~lY
2A

~

I

2Y

3A~3Y
4A
5A
6A

~
~
~
.

4Y
5Y
6Y

FUNCTION TABLE

(Each Inverter)
Input

Output

A

y

H
L

L
H

c8SAMSUNG'
Clft,..+ ..__ i_,..

449

14

KS54HCTLS
KS74HCTLS

Hex Schmitt-Trigger Invert,rs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0;5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
± 125 mA
Vee or GND pins .........
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vcc
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Ta =25°C

Test Conditions

Minimum High-Level
Output Voltage

VOH

VIN=VIH or Vll
IO=-2o/AA
lo=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or Vll
10=201lA
10=4mA
lo=8mA

(Vcc=5V± 1 0% Unless Otherwise Specified)
KS54HCTLS
KS74HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Vcc Vce -0.1
4.2
3.98

Vce -0.1
3.84

Vcc -0.11
3.7

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

0

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

IlA

Maximum Quiescent
Supply Current

Icc

VIN=VCC or GND
IOUT=OIlA

2.0

20.0

40.0

Il A

per input pin
VI=2.4V
other inputs:
at Vcc or GND
IOUT=OIlA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

6/cc

DC ELECTRICAL CHARACTERISTICS
Ta=25°C
Characteristic
Positive-Going

Symbol
VT+

Threshold Voltage
Negative-Going

VT-

Threshold Voltage
Hysteresis
(VT+-VT-)

c8~~~SUNG

VH

Test Conditions

KS74HCTLS
KS54HCTLS
Unit
Ta= -40°C to +85°C Ta= -55°C to +125°C

Min Max

Min

Max

Min

Vec=4.5V

1.2 1.9

1.2

1.9

1.2

1.9

Vce=5.5V

1.4 2.1

1.4

2.1

1.4

2.1

Vcc=4.5V

0.5 1.2

0.5

1.2

0.5

1.2

Vcc=5.5V

0.6 1.4

0.6

1.4

0.6

1.4

vcc=4.5V

0.4 1.4

0.4

1.4

0.4

1.4

Vce=5.5V

0.4 1.5

0.4

1.5

0.4

1.5

Max
V
V
V

450

KS54HCTLS
KS74HCTLS

14

Hex Schmitt-Trigger Inverters

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Input tr , t,<6 ns), HCTLS14

Ta=25°C
Vcc=5.0V

Conditionst

KS74 HCTLS
Ta= -40°C to +85°C
Vcc=5.0V± 10%

KS54 HCTLS
Ta= -55°C to +125°C
Vcc=5.0V± 10%

Unit

~~-

Typ

Maximum Propagation Delay

tpLH

f-------

15

CL=50pF

---

16

tpHL
CIN

Power Dissipation Capacitance *

Cpo

25

30

28

33

~~-

22
----

~-

Maximum Input Capacitance

Guaranteed Limits

20
~-

5
--

(per gate)

~.--

~~

15

ns

-----

..-

pF

- - - f-~-

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

I

=8SAMSUNG
Electronics

451

KS54HCTLS
KS74HCTLS

20

Dual 4-lnput NAND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristi~ of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to + 12.5°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain two independent 4-input NAND
gates. They perform the Boolean functions Y - A· B· C. D
or Y=A+'B+c+B in positive logic.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

1A

1A

Vee

1B

20
2C

1B

NC

1C

2B
2A

10

NC
1C
10
1Y
GNO

2Y

1Y

2A
2B
2Y
2C
20

FUNCTION TABLE
(Each gate)
INPUTS

f---------

A

B

C

D

H

H
X
L
X
X

H
X
X
L
X

H
X
X
X
L

L
X
X
X

OUTPUT
Y
L
H

H
H.
H

452

20

KS54HCTLS
KS74HCTLS

Dual 4-lnput NAND Gates

Absolute Maximum Ratings·
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vec +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vce +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
• (-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
K$54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logiC
voltage level (either Vec or GNO)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta =-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20I-/A
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2OI-/A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

I-/A

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

I-/A

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

D.lee

Vee Vee -0.1
4.2
3.98
0

VIN=Vee or GND
10uT=01-/A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
louT=OI-/A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r , tf~6 ns), HCTLS20

T.=25°C
Vee=5.0V
Typ

Maximum Propagation Delay
Any Input to Y

tpLH
r--tpHL

Maximum Input Capacitance

CIN

Power DisSipation Capacitance *

Cpo

CL =50pF
--I-

T.=-55°Cto +125°C
Vee=5.0V± 10%

Unit

Guaranteed Limits

11

15

19

23

11

15

19

23

ns

5

pF

15

pF

- - r-----

(per gate)

KS54 HCTLS

KS74 HCTLS
T. = - 40°C to + 85°C
Vee = 5.0V ± 10%

* Cpo determines the no-load dynamic power dissipation: PO=CPD Vce 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

cSCSAMSUNG
• • Electronics

453

I

KS54HCTLS,
KS74HCTLS

21

Dual 4-lnput AND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain two independent 4-input AND gates.
They perform the Boolean functions Y = A. B. C. D or
Y=A+B+C+D in positive logic.

PIN CONFIGURATION

1A
1B

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain.
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
)

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM

Vee

2D

NC

2C
NC
2B
2A

1C
10
1Y
GNO

2Y

1Y
1C

2A-:";"":""-'---,
2B
2Y
2C
20 --'--'---'

FUNCTION TABLE

(Each gate)
INPUTS
A

B

H
L
X
X
X

H
X
L
X
X

C
H
X,
X
L
X

OUTPUT
0

Y

H
X
X
X
L

H
L
L
L
L

=8SAMSUNG
Electronics

454

21

KS54HCTLS
KS74HCTLS

Dual 4 ..lnput AND Gates

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V) .
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 rnA
Continuous Current Through
Vcc or GND pins
± 125 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vce
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , t,

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vec=5V± 1 0% Unless Otherwise Specified)
KS74HCTLS
?~S54HCTLS
Ta= -40°c:_t()2!~oc: Ta= -~~oC to__~__~~oC Unit

Ta=25°C
1------,---'

Typ
Minimum High-Level
Input Voltage
Maximum Low-Level
Input Voltage

Additional Worst
Case Supply
Current

---

-

-

2.0
----

-~-

0.8

VOH

VOL
~--

liN

VIN = VIH or VIL
10=- 2OilA
10= -4mA
VIN=VIH or VIL
10=20ilA
10=4mA
10=8mA
1------.

0
1-.

VIN=Vce or GND

V

2.0
-~-

...

-- j - - - - - _ . -..

O.B

Vec Vcc -0.1
4.2
3.98

..... - - -

Vee -0.1
3.84

V

0.8

_..

-

- - - - - - --

f-~-

Vee -0.1
3.7

V

_._- t - . - - - - - - .

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

il A

2.0

20.0

40.0

il A

2.9

3.0

rnA

_.

. _ - - c-.

VIN=Vee or GND
10uT=OilA
1-- .._ - - per input pin
VJ=2.4V
L::,.lcc other Inputs:
at Vce or GND
10uT=OilA
Icc

------

.. -

-'
2.7

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

:,1

(Input t r , t,<6 ns), HCTLS21

~T.;KS7'HCTLS
T.= -400C to +85°C

Conditions t
-

T.=25°C
Vcc=5.0V
~

Vcc=5.0V±10%
-~.----

Typ
Maximum Propagation Delay
Any Input to Y

tpLH

r------

tpHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

CL =50pF

18

12

18 _._ ..._ -22- - -' -

1-------t - -

- - - - [-.--t-

5 I
(per gate)

I

cSCSAMSUNG

KS5.Hcns

Ta= -55°C to +125°C
Vcc=5.0V± 10%
-

~-----.

Unit

---

Guaranteed Limits

12

_.-

22

- - - - - t---~

27
-~----

-

-

27
~

~~-----

~~~
pF

- - - - - - j----- - - - - - - - - - t -

15

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

• • Electronics

....

- - t - - - - - - -.. -

Maximum Low-Level
Output Voltage

---".-.--~

1----.

VIL

Minimum High-Level
Output Voltage

Maximum Quiescent
Supply Current

2.0

VIH
-.~

e--------Maximum Input
Current

Guaranteed Limits

pF

455

I

KS54HCTLS
KS74HCTLS

22

Dual 4-lnput NAND Gates
with Open-Drain Outputs

FEATURES

DESCRIPTION

- Function, pin-out, speed and drive compatibility with
54174LS logic family
- Low power consumption characteristic of CMOS
- High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
- Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
- Wide operating voltage range: 4.5V to 5.5V
- Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain two independent 3-input NOR gates.
gates. These ga.tes perform the Soolean fucntions
Y=A-S-C-D or Y=A+B+C+D in positive logic. The
open-drain outputs require pull-up resistors to perform
correctly. They many be connected to other open-drain
outputs to implement active low wired-OR or active high
wired-AND functions.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components .
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

1A

Vee

A

16

20

6

NC

2C

C

1C

NC

0

10

28

1Y

2A

GNO

2Y

(1.9)
(2.10)
(4.121
(5.13)

~

r

v

FUNCTION TABLE
(Each gate)
INPUTS
A

B

C

0

OUTPUT
Y

H
L
X
X
X

H
X
L
X
X

H
X
X
L
X

H
X
X
X
L

L
H
H
H
H

c8SAMSUNG
Electronics

456

KS54HCTLS
KS74HCTLS

22

Dual 4-lnput NAND Gates
with Open-Drain Outputs

Absolute Maximum Ratings*
Supply' Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/ °C from 65 ° C to 85 ° C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages *, VIN, Your
OV to Vee
Operating" Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vec=5V± 10% Unless Otherwise Specified)

Ta=25°C

Test Conditions

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +~ Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20J.lA
lo=4mA
lo";8mA

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

J.lA

Maximum Output
Leakage Current

loz

VIN=VIH or VIL
Vour=Vee

±0.5

±5.0

±10.0

J.lA

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

/-I A

2.7

2:9

3.0

mA

Additional Worst
Case Supply
Current

.6.lcc

0

VIN=Vee or GND
lour=O/-IA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour=O/-IA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr , tf~6 ns), HCTLS22

T.=25°C
Vcc=5.0V

KS74 HCTLS
T. = -40°C to +85°C
Vcc=5.0V±10%

Typ

Maximum Propagation Delay
Any Input to Y

~

CL=50pF

tPHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per gate)

KS54 HCTLS
T.= -55°C to +125 O C
Vcc=5.0V± 10%

Unit

Guaranteed Limits

26

33

40

47

15

20

25

30

ns

5

pF

15

pF

.. Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fin.
t For AC switching test circuits and timing waveforms see section 2.

cRSAMSUNG
• • Electronics

457

I

KS54HCTLS
KS14HCTLS

27

Triple 3-lnput NOR Gates

FEATURES

DESCRIPTION

e Function, pin-out, speed and drive compatibility with
54/74LS .Iogic family
e Low power consumption characteristic of CMOS
e High-Drive-Current outputs:
IOL=8 mA @ VOL =O.5V
e Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
e Wide operating voltage range: 4.5V to 5.5V
e Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to + 125°C
• Rackage options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain two independent 3·input NOR gates.
They perform the Boolean functions Y=A+B+C or
y=,A.egeC in positive logic.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds _ and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground .

1A
lA

Vee

18

1C

2A

IY

28

3C

2C

38

2Y

3A

GNO

3Y

(1)

"IJD

(12)

1Y

1C (13)

2A~

2B~2Y

2C

(5)

3A

(9)

3C

(11)

.

3A~3V

FUNCTION TABLE
(Each Gate)
INPUTS

OUTPUT

A

B

C

Y

H
X
X
L

X
H
X
L

X
X
H
L

L
L
L
H

c8SAMSUNG
Electronics

458

KS54HCTLS
KS74HCTLS

27

Triple 3-lnput NOR Gates

Absolute Maximum Ratings*
Supply Voltage Range Vcc,
-0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -'-0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, T519' .. -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vcc
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V±10% Unless Otherwise Specified)

Ta= 25°C

Test Conditions

KS74HCTLS
KS54HCTLS
1a= -40°C to +85°C Ta= -55°C to +125°C Unit
--

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20fJA
10= -4mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN = VIH or VIL
10=20fJA
10=4mA
10=8mA

0.1
0.26
0.39

0:1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

fJA

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

fJA

2.7

2.9

3.0

~nput

Additional Worst
Case Supply
Current

.6lcc

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
10uT=OfJA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10uT=OfJA

Symbol

Conditions t

(Input t r , tf~6 ns), HCTLS27

Ta=25°C
Vcc=5.0V

KS74HCTLS
Ta= -40°C to +85°C
Vcc=5.0V::!:10%

Typ

Maximum Propagation· Delay
Any Input to Y

tPLH

I-----------

CL =50pF

tpHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per gate)

...

I'

AC ELECTRICAL CHARACTERISTICS
Characteristic

I-J

KS54 HCTLS
T. = -55°C to +125°C
Vcc=5.0V::!: 10%

Unit

Guaranteed Limits

11

15

19

23

13

15

19

26

ns

5

pF

15

pF

* CPO determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

cRSAMSUNG
• • Electronics

459

I

KS54HCTLS
KS74HCTLS

30
-B-Input Nand Gate

FEATURES

DESCRIPTION

• Function, pifH)ut, speed and drive compatibility with
54/74lS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10l =8 mA @ VOL =D.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.SV to 5.SV
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package' options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '30 contains a single a-input NAND gate. It performs
the boolean functions (in positive logic):

PIN CONFIGURATION

LOGIC DIAGRAM

Y-A·B·C·b·E·F,G·R

Y=A+B+E+D+E+F+G+R

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
AU inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

A
A

Vee

B

NC

C

H

0

G

2
3

4

E

B

C
8

6

F

NC
y

GNDI

11
12

FUNCTION TABLE
Output Y

Inputs A Through H
All Inputs
One or more inputs

H
L

c8SAMSUNG
Electronics

L
H

460

KS54HCTLS
KS74HCTLS

30
8-lnput Nand Gate

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vee. . ...... -0.5V to + 7V
DC Input Diode Current. hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
±125 mA
Vee or GND pins. . . . . . . . . . . . .
Storage Temperature Range. Tstg . . . - 65 ° C to + 150 ° C
Power Dissipation Per Package. Pdt ...... 500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vee . . . . . . . . . . . .. 4.5V to 5.5V
DC Input & Output Voltages *. VIN. VOUT . . OV to Vcc
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times. t r • tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta = - 55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20j.lA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20j.lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

j.lA

2.0

20.0

40.0

j.lA

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

~Iee

Vee Vec -0.1
4.2
3.98

VIN=Vce or GND
10uT=Oj.lA
Iper input pin
VI=2.4V
lother Inputs:
:at Vee or GND
10UT=Oj.lA

AC ELECTRICAL CHARACTERISTICS. (Input tr • t~6
Characteristic

Symbol

Conditions t

ns). HCTLS30

KS54HCTLS
KS74HCTLS
Ta=25°C
Ta = -40°C to +85°C Ta = -55°C to +125°C
Vcc=5.0V
Unit
Vcc=5.0V:!:10%
Vcc=5.0V:!: 10%
Typ

Guaranteed Limits

)

11

15

19

22

tpHL

11

15

19

22

Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

5
15

Propagation Delay

~

CL=50pF

..

"

ns
pF
pF

* Cpo determines the no-load dynamiC power diSSipation: Po=Cpo Vee' fin .
t For AC switching test circuits and timing waveforms see section 2.

cHSAMSUNG

461

I

KS54HCTLS 3~~
KS74HCTLS ~

Quad 2-lnput OR Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs;
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V tol 5.5V
• Characterized .for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include" small outline" packages
(Available Tape & ~eel), standard DIPs.

These devices contain four independent 2-input OR gates.
They perform the Boolean functions Y = A + B or Y = A. B.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damaged due
to static discharge by internal diode clamps to Vee and
ground.

1)

1A

Vee

1B

4B

1Y

4A

2A

4Y

2B

3B

2Y

3A

GND

3Y

~
(3)

1A (2)
1B

1Y

2A~

2B~2Y

3A~3Y
3B~

4A(~2)
(11)
(13)
4B·

4Y

FUNCTION TABLE
(Each Gate)
Inputs

Output

A

B

y

H
X
L

X
H
L

H
H
L

c8SAMSUNG
EI~drnni~~

462

32

KS54HCTLS
KS74HCTLS

Quad 2-lnput OR Gates

Absolute Maximum Ratings*
Supply Voltage Range Vcc,
-0.5V to +7V
DC Input Diode Current, 11K
(VI < -O.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C ~ +125°C
Max 500 ns
Input Rise & Fall Times, tr,t,

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logiC
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
. These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS

(Vcc=5V± 10% Unless Otherwise Specified)
D

Characteristic

Symbol

Ta=25 C

Test Conditions

KS54HCTLS
KS74HCTLS
Ta= -40°C to +85 D C Ta= -55 D C to +125 D C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vcc -0.1
3.84

Vcc -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

/-I A

2.0

20.0

40.0

/-I A

2.7

2.9

3.0

mA

Minimum High-Level
Output Voltage

VOH

VIN = VIH or VIL
10=-20/-IA
10=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/-lA
10=4mA
10=8mA

Maximum Input
Current

liN

VIN=VCC or GND

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

.t.lcc

Vcc Vcc -0.1
3.98
4.2
0

VIN=VCC or GND
10uT=O/-lA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10uT=O/-lA

AC ELECTRICAL CHAR.ACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr,

T.=25°C
Vee=5.0V

t,~6 ns), HCTLS32
KS74 HCTLS
T.= -40°C to +85°C
Vec= 5.0V ± 10%

Typ

Maximum Propagation Delay

-

tpLH
tpHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

13

Unit

Guaranteed Limits

22

CL=50pF 1-------22
13
(per gate)

KS54 HCTLS
T.= -55°C to +125°C
Vee=5.0V± 10%

25

28

25

28

ns

5

pF

15

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.

t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
1=1",('trnni('~

.463

I

KS54HCTLS
KS74HCTLS

42

BCD.,to Decimal Decoder

FEATURES

DESCRIPTION

•
•
•
•

The' 42 decoder accepts for active· high BCD inputs and
provides 10 mutually exclusive active· low outputs, as
shown by logic symbol or diagram: The active·low outputs facilitate addressing other MSI units with active-low
input enables.

•
•
•
•
•

•

Full decoding of Input Logic
All outputs are High for Invalid BCD Conditions
Also for application as 3-Line to 8-Line Decoders
Fun~tion, pin-out, speed and drive compatibility with
54/74LS logic family
Low power consumption characteristic of CMOS
High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over' industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

The logic design of the' 42 ensures that all outputs are
high when binary codes greater than nine are applied to
the inputs.
The most significant input, D, produces a useful inhibit function when the' 42 is used as a 1-of-8 decoder. The D input can also be used as the Data input in an 8-output
demultiplexer application.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

Vee

A

B

LOGIC DIAGRAM

C
D

9
GND

FUNCTION TABLE
Outputs

Inputs
No.
D

C B A

0
1
2
3
4

L
L
L
L
L

L
L
L
L

L
L
H
H
H L

5
6
7

L
L
L

H L

H

H
H H
H L L
H L L

L

8
9

H
INVALID

H
H
H
H

L

H
L

H
L

0 1 2 3 4 5 6 7 8 g

H H H
H H H
H H H
H H H
L H H

H H H
H H H
H H H
H H H
H H H

H, H H L H
H H H H L
H H H H H
H H H H H
H H H H H

H H H
H H H
L H H
H L H
H H L

L hi H H
L H H
H L H
H H L
H H H

H
H
H
H

H

H
H
H
H
H

H
H
H
H
H

H L
H H
H L L
H H L
H H H

H
H
H
H
H

H H
H H
H H
H H
H H

H

L
L

H
L

cRSAMSUNG
....

H H H
H H H
H H H
H H H
H H H H H H H

H H H H
H H H H
H H H H
H H H H

464

KS54HCTLS
KS74HCTLS

4'1)

BCD-to Decimal Decoder

~

Absolute Maximum Ratings*
Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, hK
(V, < -0.5V or V, > Vcc +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Va < -0.5V or Va > Vcc +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.9V < Va < Vcc +0.5V)
±35 rnA
Continuous Current Through
Vce or GND pins
± 125 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , Y,N, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vce=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Test Conditions

KS74HCTLS
KS54HCTlS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Levei
Input Voltage

V,H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V~L

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/AA
lo=-4mA

Vce -0.1
3.84

Vee -0.1
3.7

V

VOL

VIN=V'H or VIL
lo= 2O/AA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

/AA

B.O

80.0

160.0

/AA

2.7

2.9

3.0

rnA

Maximum Low-Level
Output Voltage
Maximum Input
Current

hN

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

~Icc

Vec Vee -0.1
4.2
3.98
0
--

VIN=Vce or GND
V'N=Vce or GND
louT=O/AA
per input pin
V,=2.4V
other Inputs:
at Vec or GND
louT=OJAA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditionst

(Input tr , tf~6 ns). HCTLS42

Ta =25°C
Vcc=5.0V

KS74 HCTLS
Ta= -40°C to +85°C
Vcc=5.0V±10%

Typ

Maximum Propagation Delay
Any Input to Y

tpLH

t---

Maximum Input Capacitance
Power Dissipation Capacitance *

CL=50pF

tpHL
C'N
Cpo

KS54 HCTLS
Ta= -55°C to +125°C
Vcc=5.0V± 10%

Unit

Guaranteed Limits

19

25

32

38

19

25

32

38

5
(per gate)

ns
pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

·465

I

51'58
/-

KS54HCTLS
KS74HCTLS

Dual AND-O.R-/nvert Gates
and Dual AND-OR Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• ,Low power consumption characteristic of CMOS
- High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
- Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
- Wide operating voltage range: 4.5V to 5.5V
- Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to + 125°C

The '51 performs the following Boolean functions:
1 Y=(1 A-1 B-1 C)+(1 D-1 E-1 F)
2Y=(2A-2Bl+(2C-2D)

- Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

LOGIC DIAGRAMS

1A

Vee

2A

1C

28

18
1F

2C
20
2Y

1E
10

GNO

1Y

The '58 performs:
1 Y = (1 A- 1 B-1 C) + (1 D - 1 E - 1 F)
2Y=(2A-2B)+(2C-2D)
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

(1)

'51

1A
18
1C
10
1E
1F
2A
28
2Y
2C
20

FUNCTION TABLES
Output 1Y

Inputs
1A

18

1C

10

1E

1F

'51

'58

H
X

H
X

H
X

X

X

X

H
H
Any other combination

H

L
L
H

H
H
L

1Y

2A
28

Output 2Y

Inputs
2A

28

2C

20

'51

'58

H

H

X

X

L
L
H

H
H
L

X .

X
H
H
Any other combination

=8SAMSUNG
Electronics

----,'-----~

2Y
2C
20

-----1L--~

466

51158
I.

KS54HCTLS
KS74HCTLS

Dual AND-DR-Invert Gates
and Dual AND-OR Gates

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipatton temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to + 125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

°
Ta=25 C

f---.

KS54HCTLS
Ta= -400C to +85°C Ta= -55°C to +125°C Unit
------------.-

Typ
Minimum High-Level
Input Voltage

2.0

2.0

~~-

Maximum Low-Level
Input Voltage
Minimum High-Level
Output Voltage

Maximum Low-Level
Output Voltage
Maximum Input
Current
Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

0_8

VIL

VOH

VOL

hN

Vce Vee -0.1
4.2
3.98

VIN=VIH or VIL
10=20J-lA
10=4mA
10=8mA

0

VIN=Veeor GND

-------- - _ .

------

--

--.~---

Icc

--+-_.

tl.1cc

-----

±1.0

2.0

V
-

V

J-IA
- - ~----

40.0
----------

2.9

---

--I--

------

±1.0

- - - - - - -f - - -

AC ELECTRICAL CHARACTERISTICS

_. +-----

--',-

-------.~-----

20.0

2.7

.. _ - - -

0.1
0.4

--

VIN=Vee or GND
10uT=OJ-lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10UT=OJ-lA

--~-.-

I

V

---

----

----

Vee -0.1
3.7

._-

0.1
0.33
0.5

±0.1

----

0.8

--

Vee -0.1
3.84

0.1
0.26
0_39

V

----

0.8
--c-------

VIN = VIH or VIL
10=-20J-lA
10= -4mA

-~--

Guaranteed Limits
2.0

VIH

J

_~S74HCTLS

---~---

3.0

J-IA
~---

mA

(Input t r , tf~6 ns), HCTLS51, HCTLS58

_ 2 :~,
KS74HCTLS
KS54 HCTLS
Ta- 5 C Ta= -400C to +85°C [Ta= -55°C to +125°C
Vcc=5.0V
Vcc=5.0V:t10%
Vcc=5.0V:t 10%

!

Characteristic

Symbol

Conditionst

f---- -

----.--.----

Typ

Maximum Propagation Delay

tpLH

1----

tpHL
Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

13
18
CL =50pF r------ t--13
18

---

23
23

27
- -- - - - - - - - - 27 .

15

"";, I

ns

_.

5
(per gate)

------------

Guaranteed Limits

pF

1

pF

* CPO determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

467

I

J\

KS54HCTLS '73,.
KS74HCTLS I,

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear .

FEATURES

DESCRIPTION

• Function, pil'l-out, speed and drive compatibility with
54/74LS logic family'
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOl =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V t05.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to ~ 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain two independent J-K negative-edgetriggered flip-flops. A low level at CLR input resets the outputs regardless of the levels of the other inputs. When CLR
is inactive (high), data at the J and K inputs meeting the
setup time requirements are transferred to the outputs on
the negative-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to
the rise time of the clock pulse. Following the hold time
interVal, data at the J and K inputs may be changed without
affecting the levels at the outputs. These versatile flip-flops
can perform as toggle filp-flops by tying J and K high.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any externarcomponents.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

FUNCTION TABLE
Inputs

Outputs

1ClK

1J

1CLR

10

CLR

CLK

J

K

Q

Q

1K

10

L
H
H
H
H
H

X

X
L
H
L
H
X

X
L
L
H
H
X

L

H

00

0

Vee

GND

2CLK

2K

2CLR

20

2J

2Q

.I.I.I.I-

H

0

H
L
L
H
TOGGLE

00

00

LOGIC DIAGRAM
CLR __________________________. -__________________~------_.

o

K

c

c8SAMSUNG
Electronics

468

KS54HCTLS "7~ A
KS74HCTLS I ~11

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
. DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Va > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Va < Vee +0.5V)
±35 mA
Continuous Current Through
Vec or GND pins
± 1 25 mA
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

• Absolute Maximum Ratings are those values beyond
which· permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always betied to an appropriate logic
voltage level (either Vce or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

VIN=VIH or VIL

Minimum High-Level
Output Voltage

VOH

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

hN

10=-20~A

10=-4mA

Vee Vee -0.1
4.2
3.98

VIN=VIH or VIL

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

lee

..6.lcc

lo=4mA
lo=8mA

"'0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=Vee or GND

±0.1

±1.0

±1.0

~A

4.0

40.0

80.0

fAA

2.7

2.9

3.0

mA

10=20~A

VIN=Vee or GND
louT;=O~A

per input pin
VI=2.4V
other Inputs:
at Vee or GND
louT=OfAA

=8SAMSUNG
Electronics

0

469

I

KS54HCTLS 7~A
KS74HCTLS I ~11

Dual J-K Negative-Edge-Triggered
Flip-FlOps with Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r ,

tf~6 ns), HCTlS73A

KS74HCTLS
KS54HCTLS
Ta =25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Guaranteed Limits

Maximum Clock Frequency

f max

40

30

25

21

Maximum Propagation Delay,
ClK to Q or Q

tpLH

!----------

15

20

25

30

15

20

25

30

Maximum Propagation Delay,
- ClR to Q or Q

!----------

---

l

tpHL

CL=50pF

tpLH

15

20

25

30

tpHL

15

20

25

30

10

13

17

20

10

13

17

20

a

a

0

0

10

13

17

20

10

13

17

20

J or K
Minimum Setup
Time before ClK~ I ClR Inactive

tsu

Minimum Hold Time,
J or K after ClK~

th

--

- -

-~--

Minimum Pulse
Width

~~

High or low
ClR low

Maximum Input Capacitance
--

Power Dissipation Capacitance *

- - ----

ElectrOnics

ns
ns
-ns

(per flip-flop)

ns
pF

5

CIN

pF

40

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee'
t For AC switching test circuits and timing waveforms see section 2 .

.c'SAMSUNG
-0
.

ns

----

tw

Cpo

MHz

fin.

470

KS54HCTLS
KS74HCTLS

7.A A

Dual D-Type Positive-Edge-Triggered
Flip-Flops with Preset and Clear

6fM

FEATURES

DESCRIPTION

• Function, pin-Qut, speed and drive compatibility with
54/74lS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL=O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTl& -40°C to +85°C
KS54HCTLS: - 55 ° C to + 125 ° C
• Package options include "small outline" pack~ges
(Available Tape & Reel), standard DIPs.

These devices contain two independent positive-edgetriggered D-type flip-flops. Each flip-flop has its own data,
clock, preset and clear inputs and complementary Q and
Q outputs_ The preset and clear inputs are active-low and
operate independently of the clock. Data at the D input is
transferred to the Q outputs on the positive transition of
the clock, provided setup requirements have been met.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components .
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to V cc and
ground.

FUNCTION TABLE

PIN CONFIGURATION

i

Inputs
~~-PRE -~-- CLR--~--

-~-~--

I

1CLR

Vee

10

2CLR
2D
2CLK

1CLK
1PRE
10

2PRE
2Q

10
GND

20

,l
i
I
H
Ii l
I
H
H
H
H
H

H
l
l
H
H
H
H
H

Outputs

a

elK

D

I

Q

X
X
X
t

X

I

x
x

I
i

H
l
l
H
H*
H*
H
L
L
H
No Change
No Change
No Change

L
H

H
L

X
X
X

--j

I
i

i

I
!

* Both outputs will remain high as long as PRE and CLR are low,
but the output states are unpredictable if PRE and CLR go high
simultaneously.

LOGIC DIAGRAM
PRE--------------------------~------~

CLK~;
D

o

---------1

arn---------------~--------------------------~

-.c:
-c: SAMSUNG
EIectronlcs
.

471

I

KS54HCTLS
KS74HCTLS

,,~A

Dual D-Type Positive-Edge-Tr(ggered
Flip-Flops with Preset and Clear

7-,'

Absolute Maximum Ratings*
Supply Voltage Range Vee, " " ' " -0.5V to +7V
DC Input Diode Current, 11K
(VI < -0.5V or VI> Vce +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V <"Vo < Vce +0.5V)
±35 mA
Continuous Current Through
Vec or GND pins, .
±125 mA
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
vol~age level (either Vce or GND)

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voitages*, VIN, VOUT
OV to Vec
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: --:55°C to +125°C
Max 500 ns .
Input Rise & Fall Times, t r , tf

DC ELECTRICAL CHARACTERISTICS
C haracteri stic

Symbo1

(Vec=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ
I

KS74HCTlS
KS54HCTlS
Ta =-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

M'inimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2Of.4A
10=-4mA

Vcc -0.1
3.84

Vce -0.1
3,7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20f.4A
10=4mA
10=8mA

0, I
0.26
0,39

0.1
0.33
0,5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

/AA

4.0

40.0

80.0

/AA

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

.t:.lcc

VIN=VC;C or GND
louT=O/AA
per input pin
VI=2.4V
other Inputs:
at Vec or GND
10uT=0/AA

··qsSAMSUNG
f:lectronics

Vcc Vcc -0.1
4.2
3.98
0

I

472

KS54HCTLS
KS7-4HCTLS

74A

Dual D-Type Posltlve-Edge-Triggered
Flip-Flops with Preset and Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Input t r , tf~6 ns), HCTlS74A
KS54HCTLS
KS74HCTLS
T.=25°C T.= -40°C to +85°C T.=-55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V±10%
Vcc=5.0V± 10%

Conditions t

Typ

Guaranteed Limits

Maximum Clock Frequency

f max

40

30

25

20

Maximum Propagation Delay,
ClK to Q or Q

tpLH

18

25

31

37

18

25

31

37

18

25

31

37

18

25

31

37

10

13

17

20

10

13

17

20

0

0

0

0

8

15

20

25

8

15

20

25

Maximum Propagation Delay,
PRE or ClR to Q or Q

I

Data
Minimum Setup
Time before ClK t PRE or ClR Inactive

I

Minimum Hold Time,

J or K after ClK.j,
Minimum Pulse
Width

IClK High or low

IPRE or ClR low

r----------

tpHL
tpLH

r----------

tpHL
tsu
th
tw

CL=50pF

MHz
ns

----

-

ns
ns
ns
ns

Maximum Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo (per flip-flop) 40

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

I

dCSAMSUNG
• • Electronics

473

KS54HCTLS
KS74HCTLS

75/77

4-Bit Bistable Latches

FEATURES

DESCRIPTION

• Function,' pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8mA @ VOL .=O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS; - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '75 and '77 consist of 4 high-speed D-type latches
that can be used as temporary storage for binary information between processing units. The '75 features complementary Q and Q output while the '77 features single
nail output. These devices are ideal for high component
density application.
The latches are transparent: when the enable (E) is high,
the Q output will follow the data input. When the enable
goes low, the output latches at the level that was set up
at the D-input.
These device provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

PIN CONFIGURATION
FUNCTION TABLE

. '77

'75
10

10

10

10

Inputs

10
20

20
20

20

20

D

E

Q

Q*

E",

E3 ·4

E'.2

Vee

E'·2
GNO

L

L

Vee

GNA

H

H
L

3D
40
40

30
30
40

3D
40

H
H

30

X

L

Qo

'NC

40

NC

*0:

Outputs

H

00

'75 only

'75

o

LOGIC DIAGRAM

o

r-----------,

I

E

I

I

I
COMMON TO ONE
OTHER LATCH

I

I
L__________ JI

'77

o

o

r---- --------:
:

E
COMMON TO ONE

I

L___ ~~:R~~T~~ __ J

=8SAMSUNG
Electronics

474

KS54HCTLS
KS74HCTLS

75177

4-Bit Bistable Latches

Absolute Maximum Ratings*

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, irK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-O.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins . . . . . . . . . . .
± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . .
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta=25°C
Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20J.tA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20J.tA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

J.tA

Maximum Quiescent
Supply Current

Icc

VIN=Vee or GND
10uT=0J.tA

8.0

80.0

160.0

J.tA

Additional Worst
Case Supply
Current

per input in
VI=2.4V
.6lee other Inputs:
at Vee or GND
10uT=0J.tA

2.7

2.9

3.0

mA

cRSAMSUNG
• ., Electronics

Vee Vee -0.1
4.2
3.98
0

475

I

KS54HCTLS
KS74HCTLS

75177

4-Bit Bistable Latches

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr • t~6 ns). HCTLS75

T a=2S0C
Vee S.OV

=

KS74HCTLS
Ta= -40°C to +8S oC
Vee=S.OV±10%

Typ

Propagation Delay.
E to Q or Q

~

CL=50pF

Propagation Delay.
D to Q or Q

~

CL=:=50pF

tpHL

KS54HCTLS
Ta= -55°C to +12S oC
UnH
Vee=S.OV± 10%

Guaranteed Limits

19

25

31

38

19

25

31

38

13

21

26

32

tPHL

13

21

26

32

tsu

12

15

18

22

th

0

0

0

0

Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

Data Set up Time D to E
Data Hold Time E to D

~

Propagation Delay.
D to Q or Q

~

Conditions t

CL=50pF

tpHL

(In'put tr • tf~6 ns), HCTLS77

Ta=25°C
Vcc =5.0V

KS74HCTLS
Ta= -40°C ~o +85°C
Vee = S.OV ± 10%

KS54HCTLS
Ta= -55°C to +12SoC
Vcc=S.OV± 10%

13

18

23

27

13

18

23

27

13

18

23

27

13

18

25

27

tsu

12

15

18

22

th

0

0

0

0

Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

Data Set up Time D to E

CL =50pF

Unit

Guaranteed Limits

tpHL

Data Hold Time E to D

ns

fin,

Typ

Propagation Delay.
E to Q

ns

pF

AC ELECTRICAL CHARACTERISTICS
Symbol

~~

pF

* CPD determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2,

Characteristic

ns

ns
... <>

ns
ns
pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc 2 fin,
t For AC switching test circuits and timing waveforms see section 2,

..

=SAMSUNG
Electronics
.•

.

476

KS54HCTLS
KS74HCTLS

76A

Dual J-K Flip-Flops with Preset and Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174lS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These parts consist of two negative-edge-triggered J-K flipflops with independent J, K, preset, clear and clock inputs
and complementary outputs. The J-K inputs at each flipflop are enabled when the clock goes high. The input data
are transferred to the outputs on the negative-going edge
of the clock pulse, provided the setup requirements have
been met.

PIN CONFIGURATION

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE
Outputs

Inputs

lCLK

lK

PRE

10

lCLR

1Q

1

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components .

lJ

GND

Vee

2K

2CLK

20

2PRE

20

2CLR

2J

PRE

ClR

ClK

J

K

Q

Q

L
H
L
H
H
H
H
H

H
L
L
H
H
H
H
H

X
X
X

X
X
X
L
H
L
H
X

X
X
X
L
L
H
H
X

H
L
H"

L
H
H·

00

0'0

+
+
+
+
H

I

L
H
H
L
TOGGLE

00

0'0

* Both outputs will remain high as long as preset and
clear are low, but the output states are unpredictable
if preset and clear go high simultaneously.

LOGIC DIAGRAM

K

c

c

c~
PRE----------~~------~

c8SAMSUNG
Electronics

c

477

KS54HCTLS '7~ A
KS74HCTLS L IV,..

Dual J-K Flip-Flops with Preset and Clear

Absolute Maximum Ratings*
Supply Voltage Range Vcc,
-O.SV to + 7V
DC Input Diode Current, ilK
(VI < -O.SV or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +O.SV)
±20 mA
Continuous Output Current Per Pin, 10
(-O.SV < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, T8 tg . . . -65°C to +150°C
Power Dissipation Per Package, Pdt ..... SOO mW

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.SV to S.5V
DC Input & Output Voltages * , V~N, Vour .. OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V±10% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ
Minimum High-Level
Input Voltage

VIH

Maximum Low-Level
Input Voltage

VIL

KS74HCTLS
KS54HCTLS
Ta =-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

2.0

2.0

2.0

V

0.8

0.8

0.8

V

Vcc -0.1
3.84

Vcc -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

J.lA

4.0

40.0

80.0

--

VOH

VIN = VIH or VIL
10=-20J.lA
10=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20J.lA
10=4mA
10=8mA

Maximum Input
Current

liN

VIN=VCC or GND

Minimum High-Level
Output Voltage

Maximum QuieSCent
Supply Current
Additional Worst
Case Supply
Current

VIN=VCC or GND
Icc
10ur=OJ.lA
-per .input pin
VI=2.4V
.L:.lcc other Inputs:
at Vce or GND
10uT=OJ.lA

c8SAMSUNG
Electronics

Vcc Vcc -0.1
4.2
3.98
0

J.lA
L_

2.7

2.9

3.0

mA

478

KS54HCTLS 7~A
KS74HCTLS U.

Dual J-K Flip-Flops with Preset and Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r , tf~6 ns), HCTlS76A
KS74HCTLS
KS54HCTLS
Ta=25°C T.=-40°Cto +85°C T.=-55°Cto +125°C
Unit
Vcc=5.0V
Vcc=5.0V±10%
Vcc=5.0V± 10%

Symbol Conditions t

Typ

Guaranteed Limits

Maximum Clock Frequency

f max

40

30

25

21

Maximum Propagation Delay,
ClK to Q or Q

tpLH

r----~-

15

20

25

30

15

20

25

30

Maximum Propagation Delay,
PRE or ClR to Q or Q

f----

Minimum Setup I Data
Time before ClK~ I PRE or ClR Inactive
Minimum Hold Time,
J or K after ClK~

"tPHL

CL =50pF

tpLH

15

20

25

30

tpHL

15

20

25

30

tsu

--

13

17

20

10

th

-~

10

13

17

0

0

0

0

10

13

17

20

10

13

17

20

-~I--~

MHz
ns
ns
ns

20
ns

I ClK High or low
Minimum Pulse
Width
IPRE or ClR low
r--Maximum Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

(per flip-flop) 40

pF

tw

-

ns

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vce 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

I

=SAMSUNG
• • Electronics

479

Dual J-I( Flip~FIQPsw;th Pre~et,
Common Clear & Common Clock

KS54HCTLS .,~~ A
KS74HCTLS
8#'1

DESCRIPTION

'FEATURES
• Function, pin-out, speed and drive compatibility with
54/74lS logic family
• low power consumption characteristic of CMOS
• Hlgl)-Drive-Current outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
'
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These parts consist of two negative-edge-triggered J-K flipflops with independent J, K and preset inputs and complementary outputs, The clear and clock inputs are common to both flip-flops, The J-K inputs are enabled when
the clock goes high, The input data are transferred to the
outputs on the negative-going edge of the clock pulse, provided the setup requirements have been met.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels, The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components,
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

PIN CONFIGURATION

Outputs

Inputs

ClK

1K

1PRE

10

PRE

ClR

ClK

J

K

Q

Q

1J

10:

Vee

GND

L
H
L

H
L
L

X
X
X

X
X
X

X
X
X

H
L
H'

L
H
H'

00

ern

2J

2'PRE

20

2K

2Q

H

H

~

l

l

00

H
H
H
H

H
H
H
H

~

H
L
H
X

L
H
H
X

H
L
L
H
TOGGLE

~

t
H

00

00

* Both outputs will remain high as long as preset and

clear are low, but the output states are unpredictable
if preset and clear go high simultaneously,

LOGIC DIAGRAM

K

c~
=8SAMSUNG
Electronics

PRE----------~--------~

c

480

KS54HCTLS
KS74HCTLS

78A

Dual J-K Flip-Flops with Preset,
Common Clear & Common Clock

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) .
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per. Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input" & Output Voltages·, VIN,. VOUT
OV to Vcc
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & .Fall Times, t r , tf

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)

Ta=25°C
Typl

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vce -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

J.lA

4.0

40.0

80.0

J.lA

2.7

2.9

3.0

mA

Maximum Low-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20J.lA
10=-4mA

VOL

VIN=VIH or VIL
10=20J.lA
10=4mA
10=8mA

Maximum Input
Current

hN

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

1

Guaranteed Limits

Minimum High-Level
Input Voltage

Minimum High-Level
Output Voltage

,I'

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

.6.lee

VIN=Vee or GND
VIN=Vce or GND
10uT=OJ.lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=OJ.lA

c8SAMSUNG
efectronics

I

I
I

vcelvee -0.1
4.21 3.98
I

01

I
I

481

KS54HCTLS
KS74HCTLS

7B--I.A

Dual J-K Fiip-Flops with Preset,
Common Clear & Common Clock

~

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr ,

Symbol Conditions t

tf~6

ns), HCTlS78A

KS74HCTLS
KS54HCTLS
T.=25°C
T.= -40°C to +85°C Ta= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Guaranteed Limits

Maximum Clock Frequency

f max

40

30

25

21

Maximum Propagation Delay,
ClK to Q or Q

tpLH

15

20

25

30

15

20

25

30

Maximum Propagation Delay,
PRE or ClR to Q or Q-

I

J or K
Minimum Setup
Time before ClK-!- PRE or ClR Inactive

I

Minimum Hold Time,

J or K after ClK-!Minimum Pulse
Width

IClK High or low
IPRE or ClR low

MHz
ns

~

tpHL
tpLH

CL=50pF

15

20

25

30

15

20

25

30

10

13

17

20

10

13

17

20

ns

~

tpHL
tsu

----

th

a

tw

---

b

0

0

10

13

17

20

10

13

17

20

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo (per fllp·flop) 40

ns
-~

-~

ns
ns
pF

5
~--

* CPO determines the no-load dynamic power dissipation: Po=Cpo Vee 2 f
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

pF

+

lee Vee. fin.

482

86

KS54HCTLS
KS74HCTLS

Quad 2-lnput Exclusive-OR Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent 2-input ExclusiveOR gates. They perform the Boolean functions Y=A~B or
Y=AB+AB.

PIN CONFIGURATION

LOGIC DIAGRAM

1A

Vee

18

48

1Y

4A

2A

4Y

28

38

2Y

3A

GND

3Y

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clam·ps to Vce and
ground .

18 (2)

1A~

1Y

2A~
28 (5)

2Y

3A~
(10)

3Y

4A~

4Y

38

48 (13)

I

FUNCTION TABLE

(Each Gate)
Inputs

Output

y

A

B

L
L

L

L

H
L

H
H

H

L

H
H

c8SAMSUNG
Electronics

483

86

KS54HCTLS
KS74HCTLS . .

Quad 2-lnput Exclusive-OR Gates

Absolute Maximum Ratings·
Supply Voltage Range Vee. ,., .... -0.5V to + 7V
DC Input Diode. Current. hK
(VI < -0.5V or VI > Vee +0.5V) . .
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:

Plastic. Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
........
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf ..
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTlCS
Characteristic

Symbol Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C
Typ

Minimum High-Level
Input Voltage

KS54HCTLS
KS74HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OI-lA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20j.lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

I-lA

Maximum Quiescent
Supply Current

lee

VIN=Vee or GND
louT=Oj.lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10UT=01-lA

2.0

20.0

40.0

I-lA

2.7

2.9

3.0

mA

c-

Additional Worst
Case Supply
Current

.6.lee

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

484

KS54HCTLS
KS74HCTLS

86

Quad 2-1nput Exclusive-OR Gates

AC ELECTRICAL CHARACTERISTICS
Symbol

Characteristic

Conditions t

(Input t r • tf~6 ns). HCTLS86

Ta=25°C
Vcc =5.0V

KS74 HCTLS
Ta= -40°C to +85°C
Vcc=5.0V:!:10%

Typ

Maximum Propagation Delay.
A or B to Y (Other Input Low)
Maximum Propagation Delay.
A or B to Y (Other Input High)

-

-

Maximum Input Capacitance
Power Dissipation Capacitance *

KS54 HCTLS
Ta

=-55°C to

+125°C
Vcc=5.0V:!: 10%

Guaranteed Limits

tPLH

15

20

25

30

tpHL

15

20

25

30

tpLH

18

25

31

37

tpHL

18

25

31

37

C'N
CpD

CL=50pF

15

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

ns
ns

pF

5
(per gate)

Unit

pF
fin.

I

c8SAMSUNG
Electronics

485

KS54HCTLS
KS74HCTLS

90/92/93

Decade, Divide by 12, and
Binary Counters

FEATURES

DESCRIPTION

• Various counting mode.
• Function, Pin-out, speed and drive compatibility with
54/74 ALS logic family.
• Low power consumption characteristic of CMOS
• High-Drlve-Current outputs:
IOL=8mA @ VOL=0.5V
• Input and output interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage rllnge: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include plastic "small outline"
packages, standard plastic and ceramic 300-mil DIPs

These devices contain four master-slave ftip~flops and'addition .gating to provide a divide by a counter and a threestage binary counter for which the count cycle length is
divide by five for the HCTLS90, divide by six for the
HCTLS92, and divide by eight for the HCTLS93, All of
these counters have a gated zero reset and the HCTLS90
also has gated set-to-nine inputs for use in BCD nine's complement applications.
To use their maximum count length (decade, divide-bytwelve, or four bit binary), the CKB input is connected to
the aA output. The input count pulses are applied to CKA
and the outputs are as described in the appropriate truth
table. A symmetrical divide-by-the count can be obtained
from the HCTLS90 counters by connecting the aD ou!put to the CKA input and applying the input count to the
CKB input which gives a divide-by-ten square wave at outPUt.OA.

PIN CONFIGURATION

'90

'92

'93

CKB

CKA

CKB

CKA

CKB

MR1

NC

NC

NC

MR1

NC

MR2

NC

a.
as

MR2

NC

a.
aD

a.
aD

Vee

GND

MS1
MS2

as
ae

c8SAMSUNG
Electronics

NC
Vee

MR1
MR2

NC

CKA

GND

Vee

GND

ae
aD

NC

as
ae

NC

486

90192193

KS54HCTLS
KS74HCTLS

Decade, Divide by 12, and
Binary Counters

FUNCTION TABLE

'90

'90

'92

BCD COUNT SEQUENCE
(See Note A)

BI-QUINARY (5-2)
(See Note B)

COUNT SEQUENCE
(See Note C)

Output

Count

0
1
2
3
4

5
6
7

8
9

Qc

Qs

QA

L
L
L
L
L
L
L
L
H
H

L
L
L
L
H
H
H
H
L
L

L
L
H
H
L
L
H
H
L
L

L
H
L
H
L
H
L
H
L
H

Output

Count

-~

Qo

0
1

2
3
4

5
6

7

aD

ac

as

L
L
L
L
L
H
H
H

L
L
L
L
H
L
L
L
L
H

L
L
H
H
L
L
L
H
H
L

L
H
L
H
L
L
H
L
H
L

H

8
9

H

Output

Count

QA

0
1
2

3
4

5
6
7

8
9
10
11

Qo

Qc

Qs

QA

L
L
L
L
L
L
H
H
H
H
H
H

L
L
L
L
H
H
L
L
L
L
H
H

L
L
H
H
L
L
L
L
H
H
L
L

L
H
L
H
L
H
L
H
L
H
L
H

I

'93
'90

COUNT SEQUENCE
(See Note C)

RESET/COUNT TRUTH TABLE

Output

Count
0
1
2
3
4
5

6

7
8

9
10
11 '
12
13
14
15

Reset Inputs

Output

aD

Qc

as

aA

MR1

MR2

MS1

MS2

aD

L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H

L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H

L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H

L
H
L
H
L
H
L
H
L
H
L
H
L
H
L

H

H
H
X
L
X
X
L

L
X
H
X
L
X
L

X
L
H
L
X

L
L
H

H
X
X
L
L
X

L.
X

ci$SAMSUNG
Electronics

;

aA
L
L
H

RESET/COUNT TRUTH TABLE
Reset Inputs

aD

as

L
L
L
L
L
L
COUNT
COUNT
COUNT
COUNT

'92, '93

H

Note A: Output QA is connected to input CKB for BCD count.
Note B: Output
is connected to input CKA for bi-quinary
count.
Note C: Output QA is connected to input CKB.
Note D: H=High Level, L=Low Level, X=Don't Care.

ac

Output

MR1

MR2

aD

H
L
X

H
X
L

L

Qc

as

L
L
COUNT
COUNT

QA

L

487

KS54HCTLS
KS74HCTLS

90.,~. 2193
9.

Decade, Divide by 12., and
Binary Counters

LOGIC DIAGRAMS
'90

'92

(6)

MS1~=j:J~______1
MS2 (7)
(14)
CKA -----+---~_

(11)
(9)

CKB (1)

as

as

(9)Oc

(S)Oc
(8)

(11)

aD

aD

'93
(12)

--OA

(9)

Note: The J.K inp'uts shown without connection are for
reference only and are functionally at a high state.

(8)
Oc

(11)

c8SAMSUNG
Electronics

as

aD

488

KS54HCTLS
KS74HCTLS

90/92/93

Decade, Divide by 12, and
Binary Counters

Absolute Maximum Ratings *

t Power DiSSipation temperature derating:

Supply Voltage Range Vcc, ....... -0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
± 125 mA
Vcc or GND pins . .
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C
Ceramic Package (J): -12mW/oC from 100°C to 125°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages·. VIN. VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times. tr • tf . . . .
Max 500 ns
• Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vce=5V± 1 0% Unless Otherwise Specified)
KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit

Ta=25°C

Symbol Test Conditions

--

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20JlA
10=-4mA

Vee -0.1
3.84

Vec -0.1
3.7

V

VOL

VIN=VIH or VIL
10=20JlA
10=4mA
10=8mA

0.1
0.33
0.5

0.1
0.4

2.0
---~------

Maximum Low-Level
Output Voltage
Maximum Input
Current

Vee Vee -0.1
4.2
3.98'
0

0.1
0.26
0.39

/

...

V
.- --

V
-- ,...--

hN

VIN=VCC or GND

±0.1

±1.0

:1;;1.0

JlA

Maximum Quiescent
Supply Current

Icc

VIN=Vee or GND
10UT=OJlA

8.0

80.0

160.0

JlA

Additional Worst
Case Supply
Current

per input in
VI=2.4V
ll.lce other Inputs:
at Vce or GNb
10UT=OJlA

2.7

2.9

3.0

mA

c8SAMSUNG
Electronics

489

I

90

KS54HCTLS,
KS74HCTLS '

Decade Counter

AC ELECTRICAL CHARACTERISTICS
Symbol

Characteristic

Condltlons t

(Input tr• t,"6 ns), HCTLS90
TA=25°C
Vcc=5.0V

KS74HCTLS
KS54HCTLS
TA= -40°C to +85°C TA= -55°C to +125°C
Unit
Vcc=5.0V:t10%
Vcc=5.0V:t 10%

Typ

Maximum Clock
Frequency

CKA to OA

fmax

CKB to Os

Maximum Propagation
Delay, CKA to OA

tpLH
r--tpHL

Maximum Propagation
Delay CKA to 00

~

Maximum Propagation
Delay CKB to Os

~

Maximum Propagation
Delay, CKB to Oc

~
tpHL

Maximum Propagation
Delay MS to OA, 00

tpLH

Maximum Propagatiorl
Delay MS to Os, Oe
Maximum Propagation
Delay MR ,to any 0

Guaranteed Limits

42

32

26

21

20

16

13

11

10

16

20

24

12

18

23

27

ns

32

48

60

72

34

48

60

72

1Q

16

20

24

14

21

26

32

21

32

40

48

.23

35

43

52

20

30

37

45

ns

tpHL

26

40

50

60

ns

tpHL

26

40

50

60

ns

tpHL
tpHL

CL=50pF

ns
ns
ns

,-

CKA

12

15

18

22

CKB

24

30

36

44

MS

12

15

18

22

MR

12

15

18

22

tree

20

25

31

37

Maximum Input Capacitance

CIN

5

Power Dissipation Capacitance

Cpo

Pulse Width

MHz

tw

Recovery Time
MR to CKA, CKB

* Cpo determines the no·load dynamic power dissipation: Po=Cpo Vee 1 f
t For AC switching 'test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

ns

ns
pF
pF

+

Icc Vee.

490

92

KS54HCTLS
KS74HCTLS

Divide-by-Twelve· Counter

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr , tf~6 ns), HCTLS92
TA=25°C
Vee=5.0V

KS74HCTLS
KS54HCTLS
TA= -40°C to +85°C TA= -55°C to +125°C
Unit
Vee = 5.0V ± 10%
Vee=5.0V± 10%
Guaranteed Limits

Typ

Maximum Clock
Frequency

CKA to QA

f max

~---

CKB to Qs

42

32

26

21

20

16

13

11

10

16

20

24

12

18

23

27

~

32

48

60

72

tpHL

34

48

60

72

Maximum Propagation
Delay, CKA to QA

tpLH
-tpHL

Maximum Propagation
Delay CKA to Qo
Maximum Propagation
Delay CKB to Qs

-

Maximum Propagation
Delay, CKB to Qc

~

~
tpHL
tpHL

CL=50pF

10

16

20

24

14

21

26

32

10

16

20

24

14

21

26

32

Maximum Propagation
Delay CKB to Qo

f---

tpLH

21

30

40

48

tpHL

23

35

43

52

Maximum Propagation
Delay: MR to Any Q

tpHL

26

40

50

60

CKA

12

15

18

22

CKB

24

30

36

44

MR

12

15

18

22

tree

20

25

31

37

Maximum Input Capacitance

CIN

5

Power Dissipation Capacitance

Cpo

Pulse Width
Recoyery Time
MR to CKA, CKB

.. Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc 2 f

MHz
ns
ns
ns
ns
ns
ns

ns
ns
pF
pF

+ Icc Vee.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

491

I

93

KS54HCTLS
KS74HCTLS

4-Bit Binary Counter Divide
by Two and Eight

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input tr, tf~6 ns), HCTLS93
TA=25,OC
Vee=5.0V

TA

KS74HCTLS
KS54HCTLS
+85°C TA= -55°C to +125°C
Unit
Vee = 5.0V::t 10%
Vee=5.0V::t 10%

= -40°C to

Typ

Maximum Clock
Frequency

CKA to OA

fmax

CKB to OB

Guaranteed Limits

42

32

26

21

20

16

13

11

Maximum Propagation
Delay, CKA to OA

~

10

16

20

24

tpHL

12

18

23

27

Maximum Propagation
Delay CKA to 00

~

46

70

87

105

46

70

87

105

Maximum Propagation
Delay CKB to OB

~

tpHL

tpHL

CL=50pF

10

16

20

24

14'

21

26

32

Maximum Propagation
Delay, CKB to Oc

t---

tpLH

21'

32

40

48

tpHL

23

35

44

53

Maximum Propagation
Delay CKB to 00

~H_
tpHL

34

50

60

70

34

50

60

70

Maximum Propagation
Delay: MR to Any 0

tpHL

26

40

50

60

12

15

18

22

tw

24

30

36

44

12

15

18

22

tree

20

25

31

37

Maximum Input Capacitance

CIN

5

Power Dissipation Capacitance

Cpo

CKA
Pulse Width

CKB
MR

Recovery Time
MR to CKA, CKB

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc 2 f

MHz
ns
ns
ns
ns
ns
ns

ns

ns
pF
pF

+

Icc Vee.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
" Electronics

492

KS54HCTLS
KS74HCTLS

107A

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174lS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current Outputs:
lOL=8mA @ VOL=O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTlS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain two independent J-K negative-edgetriggered flip-flops. A low level at the CLR input resets the
outputs regardless of the levels of the other inputs. When
CLR is inactive (high), data at the J and K inputs meeting
the setup time requirements are transferred to the outputs
on the negative-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related
to the rise time of the clock pulse. Following the hold time
interval, data at the J and K inputs may be changed without
affecting the levels at the outputs. These versatile flip-flops
can perform as toggle flip-flops by tying J and K high.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts· and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

PIN CONFIGURATION

1J

Vee

10

1CIJi
1CLK
2K
2CLR
2CLK

10

1K
20
2Q
GND

2J

Inputs

I

Outputs

ClR

ClK

J

K

a

a

L
H
H
H
H
H

x

x

X

L

H

.J.

L
H
L
H
X

L
L
H
H
X

00

00

.J.
.J.
.J.

H

L
H
H
L
TOGGLE

00

0

0

LOGIC DIAGRAM

o

Q.

CLR-----------------q

II

c8SAMSUNG
Electronics

493

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear

KS54HCTLS·101A
KS74HCTLS
Absolute Maximum Ratings*

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V) . .
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins . . . .
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Volta.ge, Vcc . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf ..
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to ·the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta =-55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/-tA
10=-4mA

Vcc -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10 = 20/-tA
10';"4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

·±1.0

/-t A

Maximum Quiescent
Supply Current

lee

4.0

40.0

80.0

/-t A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

lllee

VIN=Vee or GND
10uT=0/-tA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0/-tA

c8SAMSUNG
Electronics

Vee Vec -0.1
4.2
3.98
0

494

KS54HCTLS
KS74HCTLS

107A

Dual J-K Negative-Edge-Triggered
Flip-Flops with Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r • tf~6 ns). HCTlS1 07 A
KS74HCTLS
KS54HCTLS
T.=25°C
T.= -40°C to +85°C T.= -55°C to +125°C Unit
Vcc=5.0V
Vcc=5.0V:!:10%
Vcc=5.0V:!: 10%

r-~--~--------------~----------~

Typ

Guaranteed Limits

Maximum Clock Frequency

f max

40

30

25

21

Maximum Propagation Delay.
. ClK to Q or Q

tpLH
r----tpHL

15

20

25

30

15

20

25

30

Maximum Propagation Delay.
ClR to Q or Q

tpLH
r----tpHL

15

20

25

30

15

20

25

30

CL=50pF

-

-

MHz
ns

-+---ns

~----------~-----------+----1---------r-~---+--------------r--------------+--~

I

Minimum Setup
J or K
Time before ClK~ IClR Inacti~~

tsu

Minimum Hold Time.
th
J or K after ClK.).
-------,-------------T--------r----IMinimum Pulse ClK High or low tw

Wi~

I

IClRlow

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

10

13

17

20

10

13

17

20

0

0

0

0

17

20

17

20

f------

(per flip-flop)

10 13
- ---10 13

~---

ns
ns
ns

5

pF

40

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

I

=8SAMSUNG
Electronics

495

KS54HCTLS 10r'~
KS74HCTLS
;:,.

Dual J-K Positive:,Edge-Triggered
Flip-Flops with'Pr~set and Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current Outputs:
IOL=8mA @ VOL=O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation, over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C

These devices contain two positive-edge-triggered J-K flipflops with independent preset and clear inputs and complementary Q and Q outputs. The present and clear inputs
are active-low and operate independently of the clock Data
at the J and K inputs are transferred to the ouptuts on the
positive transition of the clock provided setup requirements
have been met. These versatile flip-flops can perform as
toggel flip-flops by grounding K and tying J high. They
can also perform as D-type flops if J and K are tied together.

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

FUNCTION TABLE

PIN CONFIGURATION

1m
1J
1R

" Inputs

Outputs

Vee

2CLR
2J
21<
2CLK

10

2~

1~

20

GND

2~

PRE

CLR

ClK

J

K

Q

L
H
L
H
H
H
H
H

H
L
L
H
H
H
H
H

X
X
X

X
X
X
L
H

X
X
X
L
L
H
H
X

H
L
L
H
H*
H*
L
H
TOGGLE

t
t
t
t
L

L
H
X

Q

Qo

0

H

L

0

0

Qo

0

• Both outputs will remain high as long as PRE and CLR are low,
but the output states are unpredictable if PRE and CLR go high
simultaneously.

LOGIC DIAGRAM
PRE--------------------------------~~--------~

Q

eLR------------------------~------------------------------~

•••
qsSAMSUNG
Electronics

496

,I

KS54HCTLS
KS74HCTLS

109A

Dual J-K Positive Edge-Triggered
Flip-Flops with P,asat and Clear

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85 °C

Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 rnA
Continuous Current Through
Vee or GND pins
± 125 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Pow~r Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vce
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the deviee may oecur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +~~ Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20JlA
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20JlA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

JlA

Maximum Quiescent
Supply Current

lee

4.0

40.0

80.0

JlA

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

t:..lee

VIN=Vee or GND
10uT=OJlA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=OJlA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

497

I

Dual J-K Positive Edge- Triggered
Flip-Flops with Preset and Clear
AC ELECTRICAL CHARACTERISTICS

(Input t r ,

ns), HCTlS109A

KS74HCTLS
KS54HCTLS
Ta=25°C Ta= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V±10%
Vcc=5.0V± 10%

Symbol Conditions t

Characteristic

tf~6

Typ

Maximum Clock Frequency

---

fmax
tpLH

1----'---

Maximum Propagation Delay,
. PRE or ClR to Q or Q

1---

Minimum Setup

-

-~

Maximum Propagation Delay,
ClK to Q or Q

tpHL

25

20

18 25

31

37

18 25

31

37

~-

--

tsu

-

MHz
--~

18 25

31

37

18 25

31

37

10 13
-10 13

17

20

-.

tpHL

Ti~e_~~fore_£lKtJ.~or ClR Inactive

30

----

CL =50pF

tpLH

IData

Guaranteed Limits

40

17

-- ns
--I----'--

20
-----------~

Minimum Hold Time,
Data after ClK~
Minimum Pulse
Width

-----------

~lK. High or

a

a

8 ·15
8 15

tw

--

Maximum Input Capacitance

20
20

Cpo

--

25
25

(per flip·flop)

40

ns
1-----

ns
---

f--

ns

---.---- 1 -

5

'CIN

~-

Power Dissipation Capacitance *
•

a
-~~--

low
PRE or ClR low

.

a

th

ns

--~------------~-

rE~
pF

* Cpo determines the no·load dynamic power dissipation; Po=Cpo Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

cS2SAMSUNG
• • Electronics

498

KS54HCTLS
KS74HCTLS

11"
II
~,..

Dual J-K Negative-Edge-Triggered
Flip-Flops with Preset 'and Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current Outputs:
IOL=8mA @ VOL=O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These parts consist of two negative-edge-triggered J-K flipflops with independent J, K, preset, clear and clock inputs
and complementary outputs. The J-K inputs at each flipflop are enabled when the clock goes high. The input data
are transferred to the outpLits on the negative-going edge
of the clock pulse, provided the setup requirements have
been met.

PIN CONFIGURATION

1CLK
1K
1J

1,PRE
10

fCi
20
GND

These devices provide speeds and drive capability
equivalent to their lSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components,
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

FUNCTION TABLE

Vee

1CLR
2CLR
2CLK
2K
2J

2PRE
20

Inputs

1----:::-,

Outputs

PRE

CLR

CLK

J

K

Q

Q

L
H
L
H
H
H

H
L
L
H
H
H

X
X
X

X
X
X
L
L

H
L
H*

L
H
H*

00

0

H

H

~

H

H

H

X
X
X
L
H
L
H
X

~

~

+

H
H
X

0

H
L
L
H
TOGGLE
-

00

00

"Both outputs will remain high as long as PRE and CLR are low,
but the output states are unpredictable if PRE and CLR go high
simultaneously.

LOGIC DIAGRAM

Q

K

eLR--------------------------~--------------------------------~

=8SAMSUNG
Electronics

.

499

I

KS54HCTLS 112~ JI
KS74HCTLS'.·
M

Dual J-K Negative-Edge-Triggered
Flip-Flops with Preset and Clear

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
,Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, ilK
(VI < -0~5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vct +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vec or GND pins . .
± 1 25 mA
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
.. Supply Voltage, Vec
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

. Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect de~ice reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

KS54HCTLS
KS74HCTLS
Ta =-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8·

V

Minimum High-Level
Output Voltage

VOH

Vee -0.1
3.84

Vee -0.1
3.7

V

VIN=VIH or VIL
lo=-20~A

Vee Vee -0.1
4.2
3.98

lo=-4mA
VIN=VIH or YIL

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current.

liN

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

!lice

10=20~A

10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=Vee or GND

±0.1

±1.0

±1.0

~A

4.0

40.0

80.0

~A

2.7

2.9

3.0

mA

0

VIN=Vee or GND
IOUT=O~A

per input pin
V,=2.4V
other Inputs:
at Vee or GND

.

louT=O~A

c8SAMSUNG
Electronics

500

112A

KS54HCTLS
KS74HCTLS

Dual J-K Negative-Edge-Triggered
Flip-Flops with Preset and Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Input t r , tf~6 ns). HCTlS112A

KS74HCTLS
KS54HCTLS
Ta=25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Conditions t .Vcc=5.0V
Unit
Vcc=5.0V ± 10%
Vcc=5.0V± 10%
Typ

Maximum Propagation Delay,
ClK to Q or Q
Maximum Propagation Delay,
ClR to Q or Q

IJ
I

40

30

25

21

~

15

20

25

30

15

20

25

30

tpHL
-

15

20

25

30

tpHL

15

20

25

30

tsu

Minimum Hold Time,
Data after ClK ~

th

lClK High or low
IPRE

CL=50pF

tpLH

orK
Minimum Setup
Time before ClK~ ClR Inactive

Minimum Pulse
Width

Guaranteed Limits

fmax

Maximum Clock Frequency

tw

or ClR low

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per flip-flop)

10

13

17

20

10

13

17

20

a

0

0

0

10

13

17

20

10

13

17

20

MHz
ns
ns
ns
ns
ns

5

pF

40

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

I

cRSAMSUNG
• • Electronics

501

KS54HCTLS
KS74HCTLS

123

Dual Retriggerable Monostable
Multivibrator with Clear

FEATURES

DESCRIPTION

• Simple pulse width formula tw = 0.45RC
• DC triggered from active HIGH or active Low inputs
• Retriggerable for very long output pulses up to 100 %
duty cycle
• Overriding clear terminates output pulse
• Schmitt trigger A & B inputs allow infinite rise and
fall times on these inputs
• Functions, pin-out, speed and drive compativility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High drive current outputs:
IOL=8mA @ VOL=0.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range; 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '123 contains dual retriggerable monostable
multivibrators with output pulse width control by three
methods.
The basic pulse time is programmed by selection of an external resistor (Rext) and capaCitor (Cext). The external
resistor and capaCitor are normally connected as shown
timing component.
Once triggered, the basic output pulse width may be extended by retriggering the gated active Low going edge
input (Ai) or the active HIGH going edge input (Bi). By
repeating this process, the output pulse period (nQ=HIGH,
nQ=LOW) can be made as long as desired. Alternatively
an output delay can be terminated at any time by a Lowgoing edge on input CLR, which also inhibits the triggering.
An internal connection from CLR to the input gates makes
it possible to trigger the circuit by a positive-going Signal
at input CLR as shown in the function table when
CEXT>1 OnF, the typical output pulse width is defined as;
tw=O.45XREXTXCEXT(typ).
Where tw is in seconds. R is in ohm. and C is in fards.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

FUNCTION TABLE

--------T-------A Inputs

711

Vee

B1

REXTl/CEXT

CLR1

RE.XT2

C Exr l

0"1

01

Q2

02

CEXT2

L
X
X
H
H

CLR2

iC EXT

B2

GND

A2

t

a

a

X
X
L

L
L
L

H
H
H

L

t

.1l..

~

H
H

JL
JL

I

x

I

H

I

x

I

Outputs

B

CLR

L

U
U
U

HIGH voltage level
LOW voltage level
don't care
LOW to HIGH transition
~= HIGH to LOW transition
Jl...= one HIGH level output pulse
lS= one LOW level output pulse
H=
L=
X=
t=

c8SAMSUNG
Electronics

502

KS54HCTLS
KS74HCTLS

123

Dual Retriggerable Monostable
Multivibrator with Clear

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package(N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ............... -0.5V to + 7V
DC Input Diode Current, hK
(VI<-0.5V or VI>Vee+0.5V) ................. ±20 mA
DC Output Diode Current, 10k
(Vo<-0.5V or Vo>Vee+0.5V) ........
·l ±20 mA
Continuous OUtput Current Per Pin, 10
(-0.5V
B>
B>
B>

(3)

(6)

(8)

(11)

lY

2Y

3Y

4Y

505

KS54HCJ'~~'·:·'1 ~·6·1126

(Juad3-State Buffers

KS'7 4HCTLS""'~' .

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(V, < -0.5V or V, > Vec +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vec +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-O.5V < Vo < Vee +0.5V) . . .
±70 mA
Continuous Current Through
Vee or GND pins. .
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Plastic Package (N): -12mW/oC from 65°C to 85.oC

R.ecommended Operating Conditions
Supply Voltage, Vec
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. ,?V to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and .functional operation
of the device at or beyc,nd them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS

Minimum High-Level
Input Voltage

(Vec=5V± 1 0% Unless Otherwise Specified)

2.0

2.0

2.0

V

--~~--t~-·--t____-------~~~-+--"-r--~--·---r-----------·r---

Maximum Low-Level
!nput Voltage
Minimum High-Level
Output Voltage

0.8

VOH

VIN = VIH or VIL
10=-20J.lA
10=-6mA

Vcc Vec -0.1
4.2
3.98

Vce -0.1
3.84

f--~~~~~----+---~--+----~~~~~-+--+--~~-t----.----.--Maximum Low-Level
Output Voltage

VOL

VIN=VIH or V'L
10=20J.lA
10=12mA
10=24mA

~----1f------f---.----'=------------

Maximum Input
Current

0.8

0.8'

~~---+~-+-~----"+-------------'--r-'''-

0

f--

- 0.1
0.26
0.39

----~-r-----.--

±0.1

hN

...

-- f---------

0.1
0.33
Q

5

- --.. --

V
--

Vcc -0.1
3.7

-_.

_.

---

V
----c---

0.1
0.4

V

±1.0

J.lA

----f----

±1.0

5
f- ~-~-~- -+- - -+~- -"~- ";-~-=-'~-;- "- -~.~ ~;:' --:0-0- ~•-.-----:::-- ·E~~::~ ~-~~
Maximum 3-State
Leakage Current

loz

Maximum Quiescent
Supply Current

Icc

f-----'-~-~----+-~-----+-p-e·---r~-i-n-p....:.u-,--t-p-C-in-----t----Additional Worst
Case Supply
Current

-- -------..-------------

--- --- -- -t-II

ll.lcc

VI=2.4V
other Inputs:
at Vce or GND
10uT=01-lA

c8SAMSUNG
Electronics

I

2.7

2.9

[

30

i

mA

506

KS54HCTLS
KS74HCTLS

1251126
I

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

Quad3-State Buffers
(Input tr , tf~6 ns), HCTLS125, HCTLS126
KS74HCTLS
KS54HCTLS
T =2SoC
•
T.= -40°C to +85°C T.= -55°C to +125"C
Unit
Vcc=5.0V
Vcc=5.0V:t10%
Vcc=5.0V:t 10%
Typ

Maximum Propagation Delay,
A to Y

Maximum Output Enable
Time, Enable to Y

13 18
16 21

22

27

27
33

CL=50pF
CL=150pF

13 18
16 21

22
27

27
33

29
34

34
40

29
34

34
40

26

32

26

32

tpHL
tPZH

I----- RL=1kO

tPZL
Maximum Output Disable
Time, Enable to Y
Maximum Input Capacitance

Guaranteed Limits

CL=50pF
tPLH
CL=150pF

CL=50pF 17 23
CL=150pF 20 26
"-

CL=50pF 17 23
CL=150pF 20 26

~ RL=1 kO
tpLZ CL=50pF

-

CIN

Maximum Output Capacitance

COUT Output [li!3abled
Power Dissipation Capacitance * Cpo * Ol.ltput Disabled
(per stage)
Output Enabled

16

'----

16

1

ns

ns

ns

5

pF

10

pF

5
30

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching. test circuits and timing waveforms see section 2.

I

=8SAMSUNG
Electronics

507

KS54HCTLS
KS74HCTLS

132

Quad Schmitt-Trigger NAND

Gates

FEATURES

DESCRIPTION

- Function, pin-out, speed and drive compatibility with
54174LS logic family
- Low power consumption characteristic of CMOS
- High-Driv&-Current outputs:

These Schmitt-trigger devices contain four independent
NAND gates. They perform the Boolean function Y=A-B=
A+B in positive logic.

IOL =8 rnA @ VOL =O.5V

- Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
- Wide operating voltage range: 4.5V to 5.5V
- Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55 ° C to + 125 ° C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The input threshold levels are temperature compensated
and can be triggered from tre slowest of input ranges and
still give jitter-free output signals.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION

1A~)

1A

Vee

1B

4B

1Y

4A

2A

4Y

2B

3B

2Y

3A

GND

3Y

1B~-1Y
2A~'

2B~2Y
3A~(8:

3B~3Y
4A~)

4B~·····4Y

FUNCTION TABLE

INPUTS

A

B

OUTPUTS
Y

L
L
H
H

L
H
L
H

H
H
H
L

c8SAMSUNG
Electronics

508

132

KS54HCTLS
KS74HCTLS

Quad Schmitt-Trigger NAND Gates

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI> Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . .
± 125 mA
Storage Temperature Range, TSlg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/o C from 65 ° C to 85° C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: - 55 ° C to + 125 ° C
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Ta=25°C

Symbol Test Conditions

Minimum High-Level
Output Voltage,

Maximum Low-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-2o,..A
10=-4mA

VOL

VIN=VIH or VIL
10=20j.lA
10=4mA
10=8mA

(Vee=5V±10% Unless Otherwise Specified)
KS54HCTLS
KS74HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Vee Vee -0.1
4.2
3.98

Vee -0.1
3.84

Vee -0.11
3.7

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

0

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

j.lA

Maximum Quiescent
Supply Current

Icc

VIN=Vee or GND
10UT=0j.lA

2.0

20.0

40.0

j.lA

per input pin
VI=2.4V
other inputs:
at Vee or GND
10uT=0j.lA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Iee

DC ELECTRICAL CHARACTERISTICS
KS74HCTLS

Characteristic

Positive-Going

Symbol

VT+

Threshold Voltage
Negative-Going

VT-

Threshold Voltage
Hysteresis

VH

(VT+-VT-)

c8SA~SUNG
Electronics

Test Conditions

KS54HCTLS

Unit
Ta=25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Min Max

Min

Max

Min

Vee=4.5V

1.2 1.9

1.2

1.9

1.2

Max

1.9

Vee=5.5V

1.4 2.1

1.4

2.1

1.4

2.1

Vee=4.5V

0.5 1.2

0.5

1.2

0.5

1.2

Vee=5.5V

0.6 1.4

0.6

1.4

0.6

1.4

Vee=4.5V

0.4 1.4

0.4

1.4

0.4

1.4

Vee=5.5V

0.4 1.5

0.4

1.5

0.4

1.5

V
V
V

509

I

Quad Schmitt-Trigger NAND Gates
AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r , tf.s;;6 ns), HCTLS132

T.=25°C.
Vcc=5.0V

KS74 HCTLS
T.= -40°C to +85°C
Vcc=5.0V%10%

Typ

Maximum Propagation Delay
Any Input to Y

tpLH

t------

CL=50pF

tpHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

• Electronics

Unit

Guaranteed Limits

17

22

28

33

17

22

28

33

os
pF

5
(per gate)

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG

KS54 HCTLS
Ta= -55°C to +125°C
Vcc=5.0V% 10%

pF
fin.

510

KS54HCTLS
KS74HCTLS

133

13-lnput NAND Gates

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C

The' 133 contains a single 13-input NAND gate,
It performs the Boolean functions (in positive logic):
Y = A-B-C-D-E-F-G'H'I'J'K'L'M
Y = A+B+C+5+E+i=+G+R+T+J+R+L+M

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs_

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode oIamps to Vce and
ground .

LOGIC DIAGRAM

A

Vee

B

M

A
B

C
0

K

E

C
0

E

G

H

GND

y

F

G
H

(1)
(2)

I

(3)
(4)
(5)
(6)

y
(7)
(10)
(11)

," ,

(12)

K

FUNCTION TABLE

M

INPUTS A THRU M
All inputs
H
One or more inputs L

cRSAMSUNG
•• Electronics

(13)
(14)
(15)

OUTPUT

y
L
H

511

133
.

KS54HCTLS
KS74HCTLS

13-lnput NAND Qates

Absolute Maximum Ratings*
Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vce or GND pins
± 125 mA
Storage Temperature Range, T5 1g ..• -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logiC
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vec=5V±10% Unless Otherwise Specified)

Ta=25°C
-'--.

KS54HCTLS
KS74HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20J.tA
10=-4mA

Vcc -0.1
3.84

Vce -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20J.tA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

J.tA

Maximum Quiescent
Supply Current

Icc

2.0

20.0

40.0

J.tA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Icc

Vcc Vcc -0.1
4.2
3.98
0

VIN=Vee or GND
10uT=0J.tA
per input pin
VI=2.4V
other Inputs:
at Vce or GND
10UT=0J.tA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr , tf~6 ns), HCTLS133

Ta =25°C
Vcc=5.0V

KS74 HCTlS
Ta =-40°Cto +85°C
Vcc=5.0V±10%

Typ

Maximum Propagation Delay
Any Input to Y

tpLH

f-------

CL=50pF

tpHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

Unit

Guaranteed Limits

18

24

30

36

18

25

30

36

pF

15

* CPD determines the no-load dynamic power dissipation: Po=Cpo VCC 2

ns
- - i------

pF

5
(per gate)

KS54 HCTlS
Ta = -55°C to +125°C
Vcc=5.0V± 10%

fin.

t For AC switching test circuits and timing waveforms see· section 2.

c8SAMSUNG
Electronics

512

KS54HCTLS
KS74HCTLS

138

3-Line to 8-Line Decoders/Demultiplexers

FEATURES

DESCRIPTION

• Designed specifically for high-speed memory
decoders and data transmission systems
• Incorporates 3 enable inputs to simplify cascading
andlor data reception
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with nL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices are designed to be used in highperformance memory-decoding or data-routing applications
requiring verv short propagation delay times. In highperformance (·lemory systems, these decoders can be
used to minimize the effects of system decoding. When
used with high-speed memories utilizing a fast-enable
circuit, the delay times of these decoders and the enable
time of the memory are usually less than the typical access
time of the memory. This means that the effective system
delay introduced by the decoder is negligible.
The conditions at the binary select inputs and the three
e lable inputs 'select one of eight input lines. Two activelow and one active-high enable inputs reduce the neea for
external gates or inverters when expanding. A 24-line
decoder can be implemented without external inverters and
a 32-line decoder requires only one inverter. An enable
input can be used as a data input for demultiplexing
applications.
These devices' provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

Vee

B

YO

C

Y1

G2A
G2B

Y3

Y2

G1

Y4

Y7

Y5

GND

Y6

LOGIC DIAGRAM

FUNCTION TABLE
Enable
Inputs
G1

G2*

X
L
H
H
H
H
H
H
H
H

H
X
L
L
L
L
L
L
L
L

Select
Inputs

Outputs

C B A YO Y1 Y2 Y3 Y4 Y5 Y6 Y7
X
X
L
L
L
L
H
H
H
H

X
X
L
L
H
H
L
L
H
H

X
X
L
H
L
H
L
H
L
H

I

H
H
L
H
H
H
H
H
H
H

H
H
H
L
H
H
H
H
H
H

H
H
H
H
L
H
H
H
H
H

H
H
H
H
H
L
H
H
H
H

c8SAMSUNG
J=lpt'trnn;t'Cl.

H
H
H
H
H
H
L
H
H
H

H
H
H
H
H
H
H
L
H
H

H
H
H
H
H
H
H
H
L
H

H
H
H
H
H
H
H
H
H
L

513

I

3-Line to 8-Line DecoderSIOemultiplexers
Absolute Maximum Ratings·
Supply Voltage Range Vee,
.. -0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI> Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:,
Plastio Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
~S54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fa" Times, tr , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to. the device may oeeLlr.
Tl:lese are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C
r------~.

Typ

Minimum High-Level
Input Voltage

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C fa= -55°C to +125°~ Unit
Guaranteed Limits

2.0

VIH

I

2.0

2.0

r - - - - - - . - - - -... - 1------- 1-.

Maximum Low-Level
Input Voltage

VIL

Minimum High-Level
Output Voltage

VOH

-~

0.8

0.8

V
c---

0.8

V

"" I-

r---------"

Maximum Low-Level
Output Voltage

VOL

f-.

Maximum Input
Current
Maximum Quiescent
Supply Current

r----~--.---

Additional Worst
Case Supply
Current

liN
Icc
-"-~-

61ee

VIN=VIH or VIL
10=- 2OIlA
10=-4mA
VIN=VIH or VIL
10=201lA
lo=4mA
10=8mA
VIN=Vee or GND
VIN=Vee or GND
10uT=01lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=01lA

c8SAMSUNG
•

I=lo.,..+rnni,...c::

Vee Vee -0.1
3.98
4.2

Ve.e -0.1
3.84

- - r-----------.--~

0

Vee -0.1
3.7
-~-~--~-----

V
r-------

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

±0.1

±1.0

±1.0

IlA

8.0

80.0

160.0

Il A

2.7

2.9

3.0

mA

V
---_.. _ - - - --

..

-~

514

KS54HCTLS
. KS74HCTLS

138

3-Line to 8-Line Decoders/Demultiplexers

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr • t,"6 ns), HCTLS138

Ta=25°C
Vcc=5.0V

KS74 HCTLS
Ta= -40°C to +85°C
Vcc=S.OV±10%

Typ

KS54 HCTLS
Ta =-55°Cto +125°C
Vcc=S.OV± 10%

Guaranteed Limits

tpLH

22

30

37

45

tpHL

22

30

37

45

24

32

40

48

24

32

40

48

18

25

31

37

18

25

31

37

Maximum Propagation Delay.
A or B to Y

f------

Maximum Propagation Delay.
G1 to any Y

r---

tPLH

tpHL

Maximum Propagation Delay.
G2A or G2B to any Y

~

CL=50pF

tpHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

\)

Unit

ns
ns
ns

5

pF

50

pF

--

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

I

c8SAMSUNG'
Electronics

515

KS54HCTLS
KS74HCTLS

139

Dual 1.-01-4 Decoders/Demultiplexers

FEATURES

DESCRIPTION

• Designed specifically for high-speed memory
decoders and data transmission systems
• Incorporates 2 enable inputs to simplify cascading
and/or data reception

These devices are designed to be used in highperformance memory-decoding or data-routing applications
requiriring very short propagation delay times. In highperformance memory systems, these decoders can be
used to minimize the effects of system decoding. When
used with high·-speed memories utilizing a fast-enable
circuit, the delay times of these decoders and the enable
time of the memory are usually less than the typical access
time of the memory. This means that the effective· system
delay introduced by the decoder is negligible.

• Function, pin-out, speed arid drive compatibility with
54/74lS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10l =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '1 39 consists of two individual two-line to four-line
decoders in a Single package. The active-low enable input
can be used as a data line in demultiplexing applications.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION

(Each DecoderlDemultiplexer)
1(3

vee

1A

2(3

1B

2A

1YO

2B

1Y1

2YO

1Y2

2Y1

1Y3

2Y2

GND

2Y3

ENABLE

G

"'X>~F===~[)
Y1
OUTPUTS

Y2

Y3

FUNCTION TABLE
Inputs
Enable

G
H
L
L
L
L

Outputs

Select
B
A

I

YO

Y1

Y2

Y3

X
L
L

X
L

H
L

H
H

H

L

H
H

L
H

H
H
H

H
H
H

H
H

L

H
H
H
H

H

L

ci$SAMSUNG
Electronic~

516

KS54HCTLS
KS74HCTLS

139

Dual 1-01-4 Decoders/Demultiplexers

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±35 mA
Continuous Current Through
Vee or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vce
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55 ° C to + 1 25 ° C
Input Rise & Fall Times, tr , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vce=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

Typ

KS74HCTLS
KS54HcTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20J.lA
lo=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20f-lA
10=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vec or GND

±0.1

±1.0

±1.0

f-IA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

f-IA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

f:l.lcc

VIN=Vee or GN[)
louT=Of-lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=OJ.lA

·c!5SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

517

I

13'9

K'S54HCTLS
KS74HCTLS . ,

Dual 1-of-4 Decoders/Demultiplexers

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions

t

(Input tr , tf~6 ns), HCTLS139
HClLS
!::~tTa= KS74
-40°C to +85°C

Ta=25°C

_~-=-~5.0V

Vcc=5.0V±10%

Typ

Maximum Propagation Delay,

r--!~LH__

A_o_r_B_t_O_Y~ _________--+_---,-tp_~

f-__

Maximum Propagation Delay,

G to any Y
,Maximum Input Capacitance
----------~---~

tpHL

r-21
21

CIN

--------------

5

-------

Unit

Guaranteed Limits

2~__~f--_

----------------- - -------1-..

Cpo

KS54 HCTLS
55°C t +125°C
10%

a~c~=5.0V:

_2_2_--t __3_0--+-_____~3_7___ ~__ i__-~--4-5-CL=50pF

I-!!'~.!!_

Power Dissipation Capacitance *

T

28
28

37

45

35
35

42

----f---------------------

--

--- --------

50

---

ns
~

ns

42
----------~-----~

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin,
t For AC switching test circuits and timing waveforms see section 2,

=8S~MSUNG
Electronics

518

KS54HCTLS
KS74HCTLS

148

8-Line to 3-Line Priority Encoders

.

FEATURES

DESCRIPTION

•
•
•
•
•

The '1 48 provides three bits of binary coded output
representing the position of the highest order active input,
along with an output indicating the presence of any active
input. It is easily expanded via input and output enables
to provide priority encoding over many bits.

•
•
•
•
•

•

Encodes eight data lines in priority
Provides 3-bit binary priority code
Input enable capability
Easily cascadable
Function, pin-out; speed and drive compatibility with
54/74LS logic family
Low power consumption characteristic of CMOS
High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V·
Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C
Package options include "small outline" packages
(Available Tape & Ree!), standard DIPs.

7

GS
3

E1
A2
A1

GND

c8SAMSUNG
Electronics

Inputs

Vee

EO

6

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

PIN CONFIGURATION

4

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

0
AO

Outputs

--f------

EI

0 1 2 3 4 5 6 7

A2 A1 AO

H
L
L
L
L
L
L
L
L
L

X X X X
H H H H
X X X X
X X X X
X X X X
X X X X
X X X L
X X L H
X L H H
L H H H

H
H
L
L
L
L
H
H
H
H

X X
H H
X X
X X

X X
H H
X L
L H

X L H H
L H H H
H H H H

H H H H
H H H H
H H H H

H
H
L
L

H
H
L

H

H
H

H

L
L

H

H
H

H

L
L
L

GS EO

H
H
L
L
L
L
L
L
L
L

H
L

H
H
H
H
H
H
H
H

519

I

148

KS54HCTLS
KS74HCTLS

8-Line to 3-Line Priority Encoders

LOGIC DIAGRAM
(10)

O~~~~~EO
(11)

GS

(12)

3

(13)

(1)

(2)

(3)

(4)

(5)

E I - - - - - - - - Q ~_----------+--4.-

Absolute Maximum Ratings*
Supply Voltage Range Vcc, ... .
-O.5V to + 7V
DC Input Diode Current, hK
(VI < -O.5V or VI> Vcc +O.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo  Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vce +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW
* Absolute Maximum Ratings are those values beyond

Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, Vour
OV to Vee
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t F, tl
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
, .Electronics

522

KS54HCTLS
.KS74HCTLS

151

1-of-8 Data Selectors/Multiplexers

LOGIC DIAGRAM
(7)

(4)

DO

,..--(3)

01

>-----

~

(2)

02

>-----

~

(1)

03

~

DATA
INPUTS

'\

FL..J

(IS)

04

r-

~

~

-~

(5)

y

(6)

w

(14)

05

.-- ~
(13)

os

....- ;:::::L-I'\
(12)

"'

'--=L-I
(II)

I

A
(10)

B--

C

....

(9)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vce=5V±10% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ

Minimum High-Level
Input Voltage

VIH

Maximum Low-Level
Input Voltage

VIL

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20j.lA
10= -6mA.

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20j.lA
10=12mA
10=24mA

KS54HCTLS

Guaranteed Limits

2.0

2.0

2.0

V

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

±0.1

±1.0

±1.0

j.lA

8.0

80.0

160.0

j.lA

2.7

2.9

3.0

mA

------

Maximum Input
Current

VIN=Vee or GND
liN
- - - - - -1 - - - Maximum Quiescent
VIN=Vee or GND
Icc
Supply Current
10uT=0j.lA
per input pin
VI=2.4V
Additional Worst
Case Supply
~Ice other Inputs:
at Vee or GND
Current
10uT=0j.lA

cg·SAMSUNG
Electronics

KS74HCTLS

Ta= -40°C to +85°C Ta= -55°C to + 125°C Unit

Vee Vee -0.1
3.98
4.2
0

V
\

523

KS54HCTLS
KS74HCTLS

151

1-01-8 Data Selectors/Multiplexers

AC ELECTRICAL CHARACTERISTICS

I

Characteristic

Symbol

Conditions t

tpLH

CL=50pF
CL=150pF

I

(Input t r , tf~6 ns), HCTLS151

T.=25°C
Vcc=5.0V

KS74HCTLS
T.= -40°C to +85°C
Vee = 5.0V: 10%

Typ

Maximum Propagation Delay,
A,B or C to Y

Maximum Propagation Delay,
A, B or C to W

Maximum Propagation Delay,
Any D to Y

Maximum Propagation Delay,
Any D to W

Maximum Propagation Delay,

G to Y
Maximum Propagation Delay,

G toW

I

l Maximum Input Capacitance
Power Dissipation Capacitance *

24
27

KS54HCTLS
T.= -55°C to +125°C
Vcc=5.0V: 10%

Guaranteed Limits

32
35

40
45

48
54
--~----------~-

tpHL

CL=50pF
CL=150pF

24
27

32
35

40
45

48
54

tpLH

CL=50pF
CL=150pF

27
30

36
39

45
50

54
60

tpHL

CL=50pF
CL=150pF

27
30

36
39

45
50

tPLH

CL=50pF
CL=150pF

20
23

26
29

33
38

tpHL

CL=50pF
CL=150pF

20
23

26
29

33
38

39
45

tpLH

CL=50pF
CL=150pF

16
19

21
24

26
31

32
38

tpHL

CL=50pF
CL=150pF

16
19

21
24

26
31

32
38

tpLH

CL=50pF
CL=150pF

20
23

26
29

33
38

39
45

tpHL

CL=50pF
CL=150pF

20
23

26
29

33
38

39
45

tpLH

CL=50pF
CL=150pF

20
23

26
29

33
38

39
45

tpHL

CL=50pF
CL=150pF

20

26
29

33
38

39
45

--t-------

---~~---~-

54
60

------

------

ns

--

t---~

39
45

23

~-t---

5

ns

ns
-ns
t---

ns

pF

CpD

.. Cpo determines the no-load dynamic power dissipation: PD=CPD Vcc 2

ns

-------- t - -

~~------~---

CIN

Unit

pF
fin-

t For AC switching test circuits and timing waveforms see section 2.

dCSAMSUNG
• • Electronics

524

KS54HCTLS
KS74HCTLS

153

FEATURES

DESCRIPTION

• Allows Multiplexing from N Lines to 1 Line
• Performs Parallel-to-Serial Conversion
• Strobe (Enable) Line Provided for Cascading
(N lines to n lines)
• '253 is the 3-State Version of this port
• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
(IOL = 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +8S o C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

Each of these data selectors/multiplexers contains inverters
and drivers to supply full binary decoding data selection to
the AND-OR gates. Separate strobe inputs (0) are provided for each of the two four-line sections.
These devices provide speeds and drive capability'
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

FUNCTION TABLE

=

1<3

Vee

B

2<3

1C3
1C2
1C1
1CO
1Y
GND

IIII

Dual 1-01-4 Data Selectors/Multiplexers

A

2C3
2C2
2C1
2CO
2Y

c8SAMSUNG
Electrnnic!':
'

All inputs and outputs are protected from damage due to
static discharge by internal diode· clamps ,to Vcc and
ground.

SELECT
INPUTS

DATA INPUTS

B

A

X

X

X

L
L
L
L
H
H
H
H

L
L
H
H
L
L
H
H

L
H

CO C1

X
X
X
X
X
X

X
X
X
L
H

X
X
X
X

C2 C3

X
X
X
X
X
L
H

X
X
X
X
X
X
X

X
X

H

L'

STROBE

OUTPUT

G

y

H
L
L
L
L
L
L
L
L

L
L
H
L
H
L
H
L

H

525

I

Dual 1-01-4 Data SelectorslMultipiJlxers
LOGIC DIAGRAM

IV

2V

Absolute Maximum Ratings·
Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vec +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vec +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±70 mA
Continuous Current Through
Vce or GND pins
. . . . . . . . . . . .. ±250 mA
StorageTemperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW
• Absolute Maximum' Ratin9s are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
.
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/o C from 65 ° C to 85 ° C

Recommended Operating Conditions
Supply Voltage, Vce
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)
.

526

153

KS54HCTLS
KS74HCTLS

Dual 1-of-4 Data Selectors/Multiplexers

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)
KS74HCTLS
~J:
KS54HCTLS
T.= -40°C to +85°C T.==-.-55°C t~ +125~~ Unit

T.=25°C

Test Conditions

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

Maximum Low-Level
Input Voltage

VIL

Minimum High-Level
Output Voltage

VOH

V
.. t----

0.8

0.8

Vee -0.1
3.84

Vee -0.1
3.7

0.1
0.26
0.39

0.1
0.33
0.5

0.4

±0.1

±1.0

±1.0

8.0

80.0

160.0

0.8
VIN=VIH or VIL
lo=-20jJA
lo=-6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20jJA
lo=12mA
lo=24mA

Maximum Input
Current

liN

VIN=Vee or GND

Vee Vee -0.1
4.2
3.98
0

V

V
---------- --- --

0~1

V

-----

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

2.0

2.0

2.0

Icc

Lllee

VIN=Vee or GND
louT=OjJA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour=OjJA

.-- - - - - - - -

._--

2.7

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

2.9

3.0

::1
mA

I

(Input t r , tf~6 ns), HCTLS153

T.=25°C
Vcc=5.0V

KS74HCTLS
T. = - 40°C to + 85°C
Vcc=5.0V±10%

KS54HCTLS
T.= -55°C to +125°C
Vcc=5.0V± 10%

Unit

- -

Typ

Maximum Propagation Delay,
A or 8 to Y

tPLH

23
26

30
33

38
43

45
51

tpHL

CL=50pF
CL =150pF

2;3
26

30
33

38
43

45
51

tpLH

CL=50pF
CL=150pF

15
18

20
23

25
30

30
36

tpHL

CL =50pF
CL =150pF

15
18

20
23

25
30

30
36

tpLH

CL=50pF
CL=150pF

21
24

28
31

35
40

42
48

tpHL

CL=50pF
CL=150pF

21
24

28
31

35
40

42
48

r-

Maximum Propagation Delay,
Data (Any C) to Y

Maximum Propagation Delay,
Y

G to

Guaranteed Limits

CL =50pF
CL=150pF

--~--

ns
---

-------

----

CIN

Power Dissipation Capacitance *

Cpo

5

ns

. _ - - - 1----

-~

Maximum Input Capacitance

---

ns
t----

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronic!':

527

15'HA

KS54HCTLS
KS74HCTLS··

4-Line to 16-Line Decoders/Demultiplexers

FEATURES

DESCRIPTION

• Decodes 4 Binary-Coded Inputs into One of 16 Mutually Exclusive Outputs
.
• Performs the Demultlplexing Function by Distributing
Data From One Input to Any One of 16 Outputs
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These monolithic, 4·lineto 16·line decoders decode four
binary· coded inputs into one of sixteen mutually exclusive
outputs when both the strobe inputs. <31 and (32, are low.
The demultiplexing function is performed by using the 4
input lines to address the output line, passing data from
one of the strobe inputs with the other strobe input low.
When either strobe input is high, all outputs are high. These
demultiplexers ,are ideally suited [for implementing highperformance memory decoders.

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM
r-'_

A_
B

0

(1)

C

0

Vee
A

~

A

B
3
4

C
0

5

<32

6
7
8

~

Gl
G2

B ...------- H

(18)

(4)

(19)

I

~-

I

>----

12

(5)

c ,----

15

AI

(23)

>-0--

~

13

GND

(3)

G

<31
14

(2)

>-""""-

B

(22

11
(21

61

~-

cl
cl

o-r-----

>----

I

(7)

(8)

>-~

,I

(20

(6)

~-

I

i 0-;- f - -

-- ~-- r--

D

0

I

~

~

~~

>- r---

>--- ~-

c

o-~
o-~

ii
>-~

0-

A

(10)

-

(13

-

(15

-~

~:::::::

>-- r---1-

'13

(16

~t--~

A

G~
(17

BL--d

CD~

c8SAMSUNG
Electronics

528

KS54HCTLS
KS74HCTLS

154

4-Line to 16-Line Decodillfll8lemultiplexers

FUNCTION TABLE
Inputs

Outputs

G1

G2

D

C

B

A

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H

L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
H

L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X
X
X

L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
X
X
X

L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
X
X
X

L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
X
X
X

L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H

H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H

H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H

H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H

H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H

H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H

H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H

H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H

H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H

H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H

I

Absolute Maximum Ratings*
Supply Voltage Range Vee, ...
.. -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
± 125 mA
Vee or GND pins
Storage Temperature Range, TSlg ... -65°C to +150°C
Power Dissipation Per Package, P d t . . . 500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to\+125°C
Max 500 ns
Input Rise & Fall Times, t r , tf
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GN D)

529

KS54HCT'~~":)164
KS74HCTLS" ."

4-Line to 16-Line Decoders/Demultiplexers

DC ELECTRICAL CHARACTERISTICS

(Vcc=5V±10% Unless Otherwise Specified)
o

Characteristic

Symbol Test Conditions

~

I

KS74HCTLS

I

KS54HCTLS
to +12~~ Unit

~a,~~~~a= -=~~~o +8~Ta= ~55°C
Typ

Guaranteed Limits

Minimum High-Level
V
2.0
2.0
2.0
Input Voltage
IH
---------.---- -------- ----------_.. _-------+-+----+---------------+---------+-------I
Maximum Low-Level
0.8
V
0.8
0.8
Input Voltage
VIL

v

f - - .. - - - - - - - - - - --------

Minimum High-Level
Output Voltage

------------------+----t----t------ - ..- - - - - - - - - + - - - - - - - - - - - - - + - - - - 1

VOH

t-----------.. - - - - - - - -

Maximum Low-Level
Output Voltage
f------------------

VIN=VIH or VIL
lo=- 20 /AA
Vcc Vcc -0.1
Vcc -0.1
Vcc -0.1
V
lo=-4mA
4.2
3.98
3.84
3.7
-=-------+----+--------f-----------..--------- - - ----- ------------------- ---VIN=VIH or VIL
lo=20/AA
0
0.1
0.1
0.1
lo=4mA
0.26
0.33
0.4
V
lo=8mA
0.39
0.5

- - - - - - - - - - - - -.. ----+---+--------------r---------

-

Maximum Input
Current

±0.1

--..---~-------------

±1.0

±1.0

/AA

}----------------+-----t----------- - f - - - - - - I - - - - - - - - - - - - - - - ------ ..- - - - - - - - - + - - - - I

Maximum Quiescent
Supply Current

-

--~-------

--------

Additional Worst
Case Supply
Current

I
cc

VIN=VCC or GND
IOUT=O/AA
input pin~ --

80,0

8.0

160.0

/AA

-- ------ Per
bolcc

VI=2.4V
other Inputs:
at Vcc or GND
lour=O/AA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

3.0

2.7

Conditions t

(Input t r , tf~6 ns), HCTLS154

::~T

T =25°C
a
V
Vcc=5.0

----

a

- - _ .. _ - - - - - - -

c---

a

Vcc=5.0V± 10%

Guaranteed Limits

28

35

42

21

28

35

42

21

28

35

42

21
- - c-5

28

35

42

~

tpHL

tpLH
-tpHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

CL=50pF

Unit

------------

21

tpLH

t----------------- - - -

Maximum Propagation Delay,
G 1 or G2 to Any Output

HCTLS~,
KS54HCTLS
T =-55°Cto+125°C

KS74 '
=-40°Cto+85°C
Vcc=5.0V±10%

Typ

Maximum Propagation Delay,
A, S, C or D to Any Output

R
ns
ns
pF
pF

* CpD determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

530

KS54HCTLS
KS74HCTLS

155

Dual 2-to-4 Line

Decoder~/Demultiplexers

FEATURES

DESCRIPTION

• Typical applications:
Dual 2-t0-4 line decoder
Dual 1-t0-4 line demultiplexer
3-t0-8 Ii ne decoder
1-t0-8 line demultiplexer
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOl =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '1 55 consists of two 1 -to-4 line demultiplexers with
independent strobes and common binary address inputs.
When both sections are enabled by the strobes, the common address inputs sequentially select and route
associated input data to the appropriate output of each secton. The individual strobes permit activating or inhibiting
each of the 4-bit sections as desired. Data applied to input C1 is inverted at its outputs and data applied to C2
is true through its outputs. The inverter following the C1
data input permits use as a 3-to-8 line decoder, or 1-to-8
line demultiplexer, without gating.

PIN CONFIGURATION

These devices provide' speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

I

LOGIC DIAGRAM

C1

Vee

G1

C2

B

G2

1Y3

A

1Y2

2Y3

1Y1

2Y2

1YO

2Y1

GND

2YO

G1

C1

B
1Y3

2YO
A

C2

G2

=8SAMSUNG
Electronics

2Y3

531

KS54HCTLS155
KS74HCTLS

Dual 2-to-4 Line Decoders/Demultiplexers

FUNCTION TABLES
2-t0-4 Line Decoder or 1-t0-4 Line Demultiplexer
Inputs
Select

B
X
L
L
H
H
X

A
X
L
H
L
H
X

Data

G1

C1

H
L
L
L
L
X

Select

Outputs

Strobe

X
H
H
H
H
L

1YO

1Y1

H
L
H
H
H
H

H
H
L
H
H
H

1Y2
H
H
H
L
H
H

1Y3
H
H
H
H
L
H

Inputs
Outputs
Select

Strobe

Data

A

G2

C2

2YO

2Y1

2Y2

2Y3

X
L
L
H

X

H
L
L
L
L
X

X
L
L
L
L
H

H
L
H
H
H
H

H
H
L
H
H
H

H
H
H
L
H
H

H
H
H
H
L
H

I~

X

ct

BA

X XX
L
L
L
L
H
H
H
H

L
L
H
H
L
L
H
H

L
H
L
H
L
H
L
H

Strobe
or Data

G*
H
L
L
L
L
L
L
L
L

(0)

(1)

(2)

(3)

(4)

(5)

(6)

(7)

2YO 2Y1 2Y2 2Y3 1YO 1Y1 1Y2 1Y3

H
L
H
H
H
H
H
H
H

H
H
L
H
H
H
H
H
H

H
H
H
L
H
H
H
H
H

H
H
H
H
L
H
H
H
H

H
H
H
H
H
L
H
H
H

H
H
H
H
H
H
L
H
H

H
H
H
H
H
H
H
L
H

H
H
H
H
H
H
H
H
L

t = Inputs C1 and C2 Connected together

B

L
H
L
H

3-to-8 Line Decoder or Ho-8 Line Demultiplexer

:I: = Inputs G1 and G2 Connected together

Absolute Maximum Ratings*
Supply Voltage Range Vcc, .. ,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-O.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins . . . . . . . .
± 125 mA
Storage Temperature Range, T5 tg . . . -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may.affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

532

155

KS54HCTLS
KS74HCTLS

Dual 2-to-4 Line Decoders/Demultiplexers

DC ELECTRICAL CHARACTERISTICS
Charact9ristic

Symbol

Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)

Ta =25°C

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

liN

Maximum Quiescent
Supply Current

Icc

VIN=VIH or VIL
lo=-20~A·

Vcc Vcc -0.1
4.2
3.98

lo=-4mA
VIN=VIH or VIL

Additional Worst
Case Supply
Current

E.lcc

lo.=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=VCC or GND

±0.1

±1.0

±1.0

~A

8.0

80.0

160.0

~A

2.7

2.9

3.0

mA

lo=20~A

0

VIN=VCC or GND
louT=O~A

per input pin
VI=2.4V
other Inputs:
at Vcc or GND
louT=Oj.lA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r ,

KS74 HCTLS
KS54 HCTLS
T. = 25°C
T. = -40°C to +85°C T. = -55°C to +125°C
Unit
Vce=5.0V
Vee = 5.0V:!: 10%
Vee=5.0V:!: 10%
Typ

Maximum Propagation Delay,
tpLH
A, S, C2, G1 or G2 to any Output r--------(2 levels of logic)
tpHL

I

tf~6 ns), HCTLS155

Guaranteed Limits

17

23

29

35

17

23

29

35

21

28

35

42

tpHL

21

28

35

42

. Maximum Propag?tion Delay,
A or S to any Y
(3 levels of logic)

r---------

Maximum Propagation Delay,
C1 to any Y

r---------

tpLH

CL =50pF

tpHL

20

27

34

41

tpHL

20

27

34

41

Maximum Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

ns

ns

ns
pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

533

KS54HCTLS
KS74HCTLS

15·~/158
I

Quad 2-Line to 1-Line Data
Selectors/Multiplexers

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL.=8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These are data selectors;multiplexers which select a 4-bit
word from one of two sources via' the control of a common select input (AlB). A separate strobe input (<3) is provided. The '157 presents true data whereas the '158
presents inverted data at the outputs.

PIN CONFIGURATION

FUNCTION TABLE

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

Output Y

Inputs

AlB

Vee

1A

G

Strobe

Select

1B

4A

G

AlB

A

B

1Y

4B

2A

4Y

H

2B

3A

X
L

2Y

3B

X
L
L

H

GND

3Y

H
H

X
X

X
X
X
L

L
L
L
L

Data

H

'157

'158

L
L

H
H

H

L

L

H

H

L

LOGIC DIAGRAMS
'158

'157
(2)
1A

1A

(2)

lB~(3~)__________~~~

1Y

2A

2A (5)
2B

(6)

2Y

(13)

1Y

(5)
(6)

2B

2Y

3A
3Y

3B (10)
(14)
4A--

4A (14)

4B-------------+~~

(3)

(11)

(11)
3A------------~~~

3B (10)

1B

4Y

4B (13)

STROBE (15)

G"-------cr~

SEL~~ (1)

c8SAMSUNG
Electronics

SELECT
AlB (1)

534

15.7,'158
,

KS54HCTLS
KS74HCTLS

Quad 2-Line to 1-Line Data
Selectors/Multiplexers

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) .
±35 mA
Continuous Current Through
Vcc or GND pins
± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce
4.5V to 5.5V
DC Input & Output Voltages·, YIN, Vour
OV to Vcc
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS

Minimum High-Level
Input Voltage

(Vcc=5V± 1 0% Unless Otherwise Specified)

2.0
---- ...

~--r-----

Maximum Low-Level
Input Voltage
-----~-----.-

Minimum High-Level
Output Voltage
r----.---~~---

V
r----

0.8

IL
~~j---------

VOH

2.0

VIN=VIH or VIL
lo=- 20IlA
10=-4mA

----+----t---

------~-

=8SAMSUNG
Electronics

0.8

-- r---

-

Vee Vee -0.1
4.2
3.98

- -- - t--------

2.0

I

----~-------

--

Vee -0.1
3.84

--_.,--

0.8

Vee -0.1
3.7

, 535

15'7115

Quad· 2-Line to 1-Line Data
Selectors/Multiplexers

'0
KS54HCTLS
KS74HCTlS"· " ··,.10
AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr • tf~6 ns). HCTLS157. HCTLS158

Ta =25°C
Vee=5.0V

KS74 HCTLS
Ta= -40°C to +85°C
Vee = 5.0V:!: 10%

Typ

Maximum Propagation Delay.
AorBtoY

tpLH
r----tpHL

11
11

Maximum Propagation Delay.
AlB to Y

r------

tPLH

17

tPHL

17

Maximum Propagation Delay.
to Y

r------

tpLH

15
15
5

G

" tpHL

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

KS54 HCTLS
Ta= -55°C to +125°C
Vee=5.0V:!: 10%

Unit

Guaranteed Limits

15
15
23
23
20
20

19
19
29
29
25
25

22
22
34
34
30
30

ns
ns
ns
pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

536

KS54HCTLS
KS74HCTLS

160Al161A
162A1163A

Synchronous 4-Sit Decade

and Binary Counters

FEATURES

DESCRIPTION

•
•
•
•
•

These are synchronous, presettable 4-bit binary counters
featuring internal carry-look-ahead for high-speed counting.
The '160 and '162 are decade counters, and the '161
and '163 are 4-bit binary counters. The buffered clock input triggers all flip· flops simultaneously on the rising edge
of the input waveform. This eliminates the output counting
spikes normally associated with asynchronous counters.

Internal Look Ahead for Fast Counting
Carry Output for n-bit cascading
Synchronous Counting
Synchronously Programmable
Function, pin-out, speed and drive compatibility with
54/74LS logic family
Low power consumption characteristic of CMOS
High-Drive-Current outputs:
10l =8 mA @ Val =0.5V
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
Package 9ptions include "small outline" packages
(Available Tape '& Reel), standard DIPs.

•
•
•
•
•

•

ClR
ClK
A

B

Two E;mable inputs and a ripple carry output allow easy
cascading of the counters. Both count-enable inputs (ENP
and ENT) must be high to count, and ENT is fed forward
to enable the ripple carry output. The ripple carry output
(RCO) thus enabled will produce a high-level pulse while
the count is maximum (9 or 15 with QA high). This highlevel overflow ripple carry pulse can be used to enable successive cascaded stages. Transitions at the ENP or ENT
are allowed regardless of the level of the clock input.

C
D
ENP
GND

FUNCTION TABLES
'160, '161
CLK CLR ENP ENT LOAD

t
t

L
H
H
H
H
H

X

X

X

H
L
L

L
H
L

H
H
H
L
H

X

X

H

H

Function
Clear
Count & RC disabled
Count disabled
Count & RC disabled
Load
Increment Counter

'162, '163
CLK

t

I
I

X
X
X

t
t

CLR ENP ENT LOAD
L
H
H
H
H
H

X

X

H
L
L

L
H
L

X
H

X
H

X
H
H
H
L
H

The clear function for the' 1 60 and' 1 61 is asynchronous
and a low level at the clear input sets all four of the flipflop output::; low regardless of the levels of the clock, load
or enable inputs.
The clear function for the '162 and 163 is synchronous.
and a low level at the clear input sets all four of the flipflop outputs low after the next clock pulse, regardless of
the levels of the enable inputs. This synchronous clear
allows the count length to be modified easily as decoding
the maximum count desired can be accomplished with one
external NAND gate. The gate output is connected to the
clear input to synchronously clear the counter.

PIN CONFIGURATION

X
X
X
X

These counters are fully programmable; that is, the outputs may be preset to either level. As presetting is synchronous, setting up a low level at the load input disables
the counter and causes the outputs to agree with the setup
data after the next clock pulse regardless of the levels of
the enable inputs.

Function
Clear
Count & RC disabled
Count disabled
Count & RC disabled
Load
",crement Counter

c8SAMSUNG
Electronics

These counters feature a fully independent clock circuit.
Changes at control inputs (ENP, ENT, or LOAD) that will
modify the operating model have no effect on the contents
of the counter until clocking occurs. The function of the
counter (whether enabled, disabled, loading, or counting)
will be dictated solely by the conditions meeting the stable
setup and hold times.
These devices provide speeds and drive capability
equivalent to their ALSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

537

I

KS54HCTL~ 160Al161A
KS74HCTLS

162A1163A

Synchronous 4-Bit Decade
and Binary
Counters
_- --

..

-

_

..

---

LOGIC DIAGRAMS
'160A or '162A
OB

CK

CK

a::R

a::R

ENT

RCO
13)

14)

C

D

'161A or '163A

CK

CK

CK

CK

a::R

ClR

ClR

ClR

Reo
(3)

14)

A

c8SAMSUNG
Electronics

538

KS54HCTLS
KS74HCTLS

160Al161A
162A1163A

Synchronous 4-Bit Decade

and Binary Count,rs

Typical Clear, Preset, Count and Inhibit Sequences
'161A or '163A

'160A or '162A
CLR

160

CLA

162
LOAD
A

.----- ------- --

_
_-4--.... -_ -_ ._
-_
- _
- _
- _
- _
- _
- _
- _
- _
- -_

--4----'
.,-

--- - - --- - - - - --+----..&_- - - - - - - - - - - - -

--+--.... - - - - - - - - - - - - - OATA
INPUTS

==============

CLK

CLK

160

HI1

CLK

CLK

162
ENP

---+---4J
-+--4I't------+----.

ENT _ _

OUTPUTS

L= =============

-+-_..& ____________ .__

8
: __

{

::==
{00==

~::, ___t__l.ri------"l__--..J
ENT--4--4I

Oc : : ::

RCO

--+_-+--+-...J
2

I
CLEAR

3

--+---INHIBIT-PRESET

Sequence:
( 1) Clear outputs to zero
(2) Preset to BCD seven
(3) Count to eight, nine, zero, one, two, and three
(4) Inhibit

I

1
2
-_+---INHIBlT--

CLEAR PRESET

Sequence:
( 1) Clear outputs to zero
(2) Preset to binary twelve
(3) Count to thirteen, fourteen, fifteen, zero, one and two
(4) Inhibit

I

Absolute Maximum Ratings·
Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -6SoC to +1S0°C
Power Dissipation Per Package, Pdt
500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.SV to S.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -5SoC to +125°C
Max SOO ns
Input Rise & Fall Times, t r , tf
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

539

KS54HCTLS
·KS74HCTLS

160Al161A
·162A1163A

DC ELECTRICAL CHARACTERISTICS
Characteristic

Synchronous 4-Bit Decade

and Binary Counters
(Vcc=5V±10% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

V,H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V,L

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

V,N=V,H or VrL
lo=-20/AA
lo=-4mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

V,N=V,H or VrL
lo= 2O/AA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

VrN=Vcc or GND

±0.1

±1.0

±1.0

I-'A

V'N=VCC pr GND
IOUT=Of.'A
per input pin
V,=2.4V
other Inputs:
at Vcc or GND
louT=Of.'A

8.0

80.0

160.0

/AA

2.9

3.0

mA

Maximum Input
Current

liN

Maximum Quiescent
~y Current

Icc
------~--

Additional Worst
Case Supply
Current

.6. Icc

Vcc Vcc -0.1
4.2
3.98
0

/---

2.7

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Input tr, tf~6 ns), HCTLS160A, HCTLS161A

T.=25°C
Conditions t Vcc=5.0V

KS74HCTLS
KS54HCTLS
T.= -40°C to +85°C T.=-55°C to +125°C
Vec=5.0V:t: 10%
Vee = 5.0V:t: 10%

Typ

40

30

25

20

Maximum Propagation Delay,
CLK to RCO

tpLH
r---tpHL

26

35

44

53

26

35

44

53

Maximum Propagation Delay,
CLK to any Q

~-

Maximum Propagation Delay,
ENT to RCO

I---

tpLH

20

26

33

39

tpHL

20

26

33

39

CL =50pF

Unit

Guaranteed Limits

f max

Maximum Clock Frequency

V
- - +--

MHz
ns
ns

tpLH

11

14

18

21

tpHL

11

14

18

21

Maximum Propagation Delay,
CLR to any Q

tpHL

21

28

35

42

ns

Maximum Propagation Delay,
CLRto RCO

tpHL

21

28

35

42

ns

Minimum Pulse
Width

Minimum Setup
Time before
CLKt

10

13

17

20

10

13

17

20

A, B~ C, D

10

13

17

20

LOAD

10 13

17

20

10

13

17

20

10

13

17

20

0

0

0

0

CLK High or Low
CLR Low

ENP, ENT

tw

tsu

CLR inactive

Minimum I Hold Time,
All Synchronous Inputs after CLKt

th

ns

ns

ns

ns

Input Capacitance

C,N

5

pF

Power Dissipation Capacitance *

Cpo

80

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vce 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

540

KS54HCTLS
KS74HCTLS

160Al161A
162A1163A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Synchronous 4-Bit Decade

and Binary Counters
(Input t r , tf~6 ns), HCTlS162A, HCTlS163A

To=25°C
Conditions t Vcc=5.0V

KS74HCTLS
KS54HCTLS
To= -40°C to +85°C To= -55°C to +125°C
Vcc=5.0V±10%
Vcc=5.0V± 10%

Typ

Guaranteed Limits

Maximum Clock Frequency

fmax

40

30

25

20

Maximum Propagation Delay,
ClK to RCa

tpLH

r------------

26

35

44

53

tpHL

26

35

44

53

Maximum Propagation Delay,
ClK to any Q

r------------

20

26

33

39

20

26

33

39

Maximum Propagation Delay,
ENT to RCa

r--

tpLH

11

14

18

21

tpHL

11

14

18

21

Maximum Propagation Delay,
ClR to any Q

tpHL

21

28

35

42

ns

Maximum Propagation Delay,
ClR to RCa

tPHL

21

28

35

42

ns

Minimum Pulse
Width

Minimum Setup
Time before
ClKt

tPLH

tpHL

ClK High or low

CL=50pF

10

13

17

20

ClR low

10

13

17

20

A, B,C, D

10

13

17

20

lOAD

10

13

17

20

10

13

17

20

ClR inactive

10

13

17

20

ClR low

10

13

17

20

0

0

0

0

tw

ENP, ENT

Minimum Hold Time,
All Synchronous Inputs after ClKt

tsu

th

ns
ns
ns

ns

ns

ns

CIN

5

pF

Power Dissipation Capacitance *

CPD

80

pF

c8SAMSUNG
•

MHz

Input Capacitance

* CPD determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

IIII

Unit

Electronics

fin

541

I

16

KS54HCTLS
A
KS74HCTLS .' .&.f
1

8-Bit Seriai-in/Parallei-Out Shift Registers
DESCRIPTION

FEATURES
•
•
•
•
•
•
•
•
•

•

AND-Gated ~nable/disable) serial inputs
Fully buffered clock and serial inputs
Direct clear
Function, pin-out, speed and drive co'mpatibility with
54/74lS logic family
low power consumption characteristic of CMOS
High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74HCTlS: -40°C to +85°C
KS54HCTlS: -55°C to +125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These'are high-speed 8-bit registers with AND-gated serial
inputs and an asynchronous clear. Data is entered serially
through either one of the two inputs, A and B. A high on
one input enables the other one, which will then determine
the state of the, first flip-flop. A low at either or both inputs
inhibits data entry and resets the first flip-flop to a low level
at the next positive clock transition.
Data at the serial inputs may be changed while the clock
1s high or low, provided the minimum setup time requirements are met. Clocking occurs on the low-to-highlevel transition of their clock input.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

FUNCTION TABLE

Inputs

Vee

--+-, ..,-",.

Outputs

--.

OH

Clear

Clock

A

B

QA

O.

OG

O.

L

OF

X
X
H
L
X

X
X
H
X
L

L

L

L

H
H

X
L

Q'AO

OBO

OHO

Oc

OE

OD

CLR

3ND

H

CLK

H

t
t
t

Oa ..• OH

H

OAn

OGn

L
L

OAn

OGn

OAn

OGn

H = high level (steady state), L = low level (steady state)
X = irrelevant (any input. including tranSitions)
t = transition from low to high level.
OAO. OBO. OHo=the level of OA. OB or OH. respectively. before the indicate steadystate input conditions were established.
OAn. OGn = the level of OA or OG before the most,recent t transition of the clock;
indicates a one-bit shift.

c8SAMSUNG
Electronics

542

16~A

KS54HCTLS
KS74HCTLS

1

8-Bit Seria!-!nIParalle!-OutShift Registers

LOGIC DIAGRAM
CIR...:...19..:..'_--4!II

(3)

o.

(4)

as

(5)

(6)

(10)

I

00

Oc

(11)

Oe

OF

(12)

(13)

OG

OH

PARALLEL OUTPUTS

I

Typical Clear, Shift, and Clear Sequences

U
1

A

--+------.

,B

--+------'

SERIAL {
INPUTS

L-fl----------~l--~-----I

I

--,

08 _ _ """_ _ _ _ _ _ _ _---J

LJI
LJl

Oc: : .,""',_ _ _ _ _ _ _ _ _ _--1

--,
--,

0 0 __
OUTPUTS

I
I

i

LJrl~_+I--~--__

....
' _ _ _ _- - - '_ _ _ _ _ _---J

LIli---T-

Oe _ _ ....
, - -_ _ _ _ _ _ _ _ _ _ _..J

1

LJ1~1-

-----

--.,
I
I
-.,....' _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _-..JJr---. _______
OG __
OF _ - ...., - - - -_ _ _ _ _ _ _ _ _ _ _...J

1

I~

--,

rl....I _ _ _ _ __

OH __ .r..'_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _..J

CLEAR

c8SAMSUNG
Electronics

I

CLEAR

543

KS54HCTLS
KS74HCTLS

'164

8-Bit Serial-lnIPatalle/-Out",ShiftRegfsters

Absolute Maximum Ratings·
Supply Voltage Range Vee, ...... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V) . . .. ±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) .
±35 rnA
Continuous Current Through
Vee or GND pins
± 125 rnA
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt . . . .. 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress' ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these eondition's may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

Recommended Operating Conditions
Supply Voltage, Vee . .
. ....... 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to + 125°C
Max 500 ns
Input Rise & Fall Times, t r , tf ...

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C
Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20JlA
10=-4mA

Vee -0.1
3.84

Vee .,-0.1
3.7

V

Maximum Low-Level
Output Voltage,

VOL

VIN=VIH or VIL
10=20,..A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

,..A

Maximum Quiescent
Supply Current

lee

8.0

80.0

160.0

Additional Worst
Case Supply
Current

t:.lee

VIN=Vce or GND
10UT=0,..A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0,..A

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

,..A
-~---

2.7

2.9

3.0

rnA

544

KS54HCTLS
KS74HCTLS

164.

,8-Bit Serial-lnIParallel-Out Shift Registers

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr •

tf~6

ns), HCTlS164

KS74HCTLS
KS54HCTLS
Ta=25°C Ta= -40°C to +85°C Ta= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V±10%
Vcc=5.0V± 10%
Guaranteed Limits

Typ

Maximum Clock Frequency

fmax

I Maximum

Propagation Delay.
ClR to any Q
Maximum Propagation Delay.
ClK to any Q
Minimum
Pulse Width

ClR low

tpLH

40

30

25

20

MHz

27

36

45

54

ns

CL=50pF

-

tpLH

22

30

37

45

tpHL

22

30

37

45

10

13

17

20

10

13

17

20

tw

ClK High or low

Data
Minimum Setup
Time before ClKt ClR Inactive

tsu

Minimum Hold Time
Data after ClKt

8

10

13

15

8

10

13

15

th

0

5

5

5

Maximum Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo. (per package) 120

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc 2
t For AC switching test circuits and timing waveforms see section 2.

ns
ns
ns
ns
pF
pF

fill

I

c8SAMsUNG
Electronics

545

KS54HCTLS
KS74HCTLS

165

8-Bit Parallel-lnISerial-Out Shift Registers

FEATURES

DESCRIPTION

•
•
•
•
•

These are high-speed 8·bit parallel-load or serial-in shift
registers with complementary serial outputs available from
the last stage. Parallel-in access is asynchronous and is
enabled by pulling the SH/LD input low. When SH/LD is
high, data is entered serially at the SER input and shifted
one place to the right with each positive clock transition.

•
•
•
•
•

•

Complem;entary outputs
Direct overriding load (data) inputs
Gated cldck inputs
Paraliel-t~Serial data conversion
Function, pin-out, speed and drive compatibility with
54/74LS lOgic family
Ldw pow~r consumption characteristic of CMOS
High-Drive..current outputs:
IOL =8 miA @ VOL =O.5V
Inputs antt outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74HCTlS: -40°C to +85°C
KS54HCTlS: -55°C to +125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

SHILo
ClK

These devices provide speeas and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

Inputs

Vee

elK JNH

F

o
c

G

B

H

A

E

Clocking is accomplished through a 2-input NOR gate which
permits one of the clock.s to be used as a clock inhibit function. Holding either clock input high inhibits clocking. Either
clock input is enabled by holding the other clock input low
while the SH/LD input is high.

SER

SHILD
L
H
H
H
H

CLK
INH

Function

H

X
X

X

H

PARALLEL LOAD
NO CHANGE
NO CHANGE
SHIFT·
SHIFT·

CLK

X

L

t

t

L

'Content of each internal register shifts toward output QH. Data
at serial input is shifted into first register.

c8SAMSliNG
Electronics

546

KS54HCTLS
KS74HCTLS

165

8-Bit Parallel-lnISerial-Out Shift Registers

LOGIC DIAGRAM
PARALLEL INPUTS

Typical Shift, Load and Inhibit Sequences

I

CLK

ClK INH

I.

SER"~__________~_______________________________

SH/[O~
I

____

A~

B

1

~

_______________________ _

:L

c~~__+-________________________

PARALLEL
DATA
INPUTS

1

D

I

L

E~~__~___________________________

I

:~~--~----------------------------~H~~__~________________________________

a~r--------+-H----H"""'I~

-111-------

!--INHIBIT ....
lOAD

c8SAMSUNG
Electronics

SERIAL-SHIFT

547

KS54HCTLS
KS74HCTLS

165

8-Bit Parallel-lnISerial-Out Shift Registers

Absolute Maximum Ratings·
t Power Dissipation temperature derating:

Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V) .. .' .. ±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-O.5V < Vo < Vce +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins . . . . . . . .
. . . .. ± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . .
4.5V to 5:5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf ........ Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vce or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)

Ta=25°C
Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20jJA
lo=-4mA

Vce -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20jJA
lo=4mA
lo=8mA

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vec or GND

±1.0

'±1.0

jJA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

jJA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Alec

VIN=VCC or GND
louT=OjJA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
IOUT=OjJA

c8SAMSUNG
Electronics

Vee Vec -0.1
4.2
3.98
0

0.1
0.26
0.39
±0.1

II

548

KS54HCTLS
KS74HCTLS

165

8-Bit Paral/e/-/n/Seria/-Out Shift Registers

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions l

(Input tr, tf~6 ns), HCTlS165
KS74HCTLS
KS54HCTLS
T. =25°C
Ta= -40°C to +85°C Ta=-55°C to +125°C
Unit
Vee=5.0V
Vcc=5.0V:!: 10%
Vee = 5.0V:!: 10%
Guaranteed Limits

Typ

Maximum Clock Frequency

f max

40 30

25

20

Maximum Propagation Delay,
SH/iJ) to QH or QH

~

26 35

44

53

26 35

44

53

Maximum Propagation Delay,
ClK to QH or QH

~

30 40

50

60

tpHL

30 40

50

60

Maximum Propagation Delay,
H to QH or QH

tpLH
r--tPHL

20 27

34

41

20 27

34

41

tpHL

7 10

13

15

13 16

20

25

SH/lD High
before CLKt

13 16

20

25

SER before ClKt

10 13

17

20

13 16

20

25

13 16

20

25

5

7

8

10

-3

0

0

0

-3

0

0

0

SH/lD low
Minimum
Pulse Width ClK High or low

Minimum
ClK INH low
Setup Time before ClKt

tw

tsu

ClK INH High
before GlK~
Data before SH/lDt
Minimum
Hold Time

CL "';50pF

SER Data after ClKt

th

PAR Data after SH/lDt

Maximum Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

100

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

MHz
ns
ns
ns
ns

ns

ns
pF
pF

fin.

549

I

KS54HCTLS
KS74HCTLS

168.:"

/

8-Bit Parallel-lnISerial-Out
Shift Regi~ters with Clear

FEATURES
•
•
•
•
•
•
•
•
•

•

DESCRIPTION

Synchrono~sload

Direct overriding clear
Parallel to serial conversion
Function, pin-out, speed and drive compatibility with
54/74LS logic family
Low power consumption characteristic of CMOS
High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices feature paraileHn or serial·in. serial·out
registers. gated clock inputs and an overriding clear input.
The paralled·in or serial-in modes are established by the
shift/load input. When high. the input enables the serial data
input and couples the eight fill-flops for serial shifting with
each clock pulse. When low. the paralled data inputs are
enabled and synchronous loading occurs on the next clock
pulse. During parallel loading. serial data flow is inhibited.
Clocking is accomplished on thelow-to-high edge of the
clock pulse through a two-input positive NOR gate permitting one input to be used as a clock-enable or clock-inhibit
function. Holding either of the clock inputs high inhibits
clocking; holding either low enables the other clock input.
This allows the system clock to be free-running and the
register can be stopped on command with the clock input. The clock-inhibit input should be changed to the high
level only when the clock input is high. A buffered direct
clear input overrides all other inputs. including the clock.
and sets all flip-flops to zero.
'These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL. NMOS and CMo"S devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

PIN CONFIGURATION

SER
A

FUNCTION TABLE

sH/D5

s
c

QH

0

G

ClK INH

F

H

ClK

E

GND

ClR

.c8SAMSUNG
Electronics
'

Inputs

Vee

ClR
L
H
H
H
H
H

SHI

LD
X
X
L
H
H

X

Internal
Parallel Outputs

ClK
INH

elK

SER

X

X

L
L
L
L
H

L

X
X
X

a ... h

H
L

X
X

X.

X

t
t
t
t

Output
QH

A ... H QA Qs

X
X

L

L

OAOOSO

a
H
L

L
OHO

b

h

OAn

OGn

OAn

OGn

GAOOSO

OHO

550

166

KS54HCTLS
KS74HCTLS

8-BitParallel-lnISerial-Out
Shift Registers with Clear

LOGIC DIAGRAM

PARAllEL INPUTS

Typical Clear, Shift, Load, Inhibit, and Shift Sequences

I

-

CLK
CLK INH

LJ
SER - ~

SHILD

L~

JHh

A

L.

B

JHh

C

l
PAAALLEl
INPUTS

0

r;:;-h

E

l:

L

JHh

JHh

--,

OUTPUT Q H __ J
I

H

_I

....~-- SERIAL SHIFT - - -.....-~.

I

CLEAR

c8SAMSUNG
Electronics

I!HIBI~

lOAD

H

l

I_
r---

H

l

H

l

H

SERIAL S H I F T - - - -

'

551

KS54HCTLS
KS74HCTLS

166.···

8-Bit Parallel-lnISerial-Out
Shift Registers with Clear

Ab$olute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ....... -0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vce +0.5V) ......... ±~5 mA
Continuous Current Through
Vce or GND pins . . . . . . . . . . . . . . .. ± 125 mA
Storage Temperature Range, T5 1g .•• -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc .............. 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vcc
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=- 2OfJA
10=-4mA

Vce -0.1
3.84

Vec -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20fJA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vec or GND

±0.1

±1.0

±1.0

j.lA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

fJA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

.b.lee

VIN=Vee or GND
louT=OfJA
per input pin
VI=2.4V
other Inputs:
at Vec or GND
louT=OfJA

c8SAMSUNG
. Electronics

Vcc Vce -0.1
3.98
4.2

0

.552

KS54HCTLS
KS74HCTLS

166
.

8-Blt Paralle/;;'/nISerlal-Out
Shift Registers with Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r • tf~6 ns), HCTlS166
Ta =25°C
Vcc=5.0V

KS74HCTLS
KS54HCTLS
T. = -40°C to +85°C T. = -55°C to +125°C
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%

Typ
I Maximum

Guaranteed Limits

40

30

25

20

MHz

22

30

37

45

ns

26

36

44

53

26

35

44

53

10

13

17

20

10

13

17

20

10

13

17

20

10

13

17

20

10

13

17

20

Data before SH/lDt

10

13

17

20

ClR Inactive
before ClK t

10

13

17

20

SH/lD High after ClKt

7

10

12

15

SER after ClKt

7

10

12

15

T.

10

12

15

7

10

12

15

7

10

12

15

fmax

Clock Frequency

Maximum Propagation Delay.
ClR to QH

tpHL

Maximum Propagation Delay.
ClK to QH

tpLH
r---tpHL

CL =50pF

----

ClR low
Minimum
Pulse Width ClK High or low

-

tw

Minimum
SH/lD High
Setup Time before ClKt
SER before ClKt
ClK INH before ClKt

tsu

ns
ns

ns

I

I

Minimum
Hold Time

ClK INH after ClKt

th

Data after SH/lDt
I

ClR Active after ClKt

fMaximum Input Capacitance
Power Dissipation Capacitance *

CIN

5

Cpo

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

553

I

KS54HCTLS
KS74HCTLS

16101169
01

Synchronous 4-Bit Up/Down
Decade and Binary Counters

FEATURES

DESCRIPTION

• Fully Synchronous Operation for Counting and Programming
• Internal Look Ahead for Fast Counting
• Carry Output for N-bit Cascading
• Fully Independent Clock Circuit
• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Driv&-Current outputs:
10L =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These synchronous presettable counters feature an internal
carry look·ahead for cascading in high·speed counting ap·
plications. The '168 is a decade counter and the '169 is
a 4-bit binary counter. Synchronous operation is provided
by having all flip-flops clocked Simultaneously so that the
outputs change coincident with each other when so instructed by the count enable inputs and internal gating. This
mode of operation helps eliminate the output counting
spikes that are normally associated with asynchronous (ripple clock) counters. A buffered clock input triggers the four
flip-flops on the rising (positive-going) edge of the clock
waveform.

PIN CONFIGURATION
UfO

v""

ClK

RCO

A

OA

B

Os

C

Oc

D

00

ENP

ENT.

GND

lOAD

These counters are fully programmable; that is, the outputs may each be preset to either level. The load input circuitry allows loading with the carry-enable output of
cascaded counters. As loading is synchronous, setting up
a low level at the load input disables the counter and causes
the outputs to agree with the data inputs after the next clock
pulse.
The carry look-ahead circuitry provides for cascading
counters for n-bit synchronous application without additional
gating. Instrumental in accomplishing this function are two
count-enable inputs and a carry output. Both count enable
inputs (ENP and ENT) must be low to count. The direction
of the count is determined by the level of the U/O input.
When ufo is high, the counter counts up; when low, it
counts down. Input ENT is fed forward to enable the carry
output. The ripple carry output (RCO) thus enabled will produce a low-level pulse while the count is zero (all inputs
low) counting down or maximum (9 or 15) counting up.
This low-level overflow carry pulse can be used to enable
successive cascaded stages. Transition at ENP or ENTare
allowed regardless of the level of the clock input.
These counters feature a fully independent clock circuit.
Changes at control inputs (ENP, ENT, LOAD, UfO) that will
modify the operating mode have no effe~t on the contents
of the counter until clocking occurs. The function of the
counter (whether enabled, disabled, loading, or counting)
will be dictated solely by the conditions meeting the stable
setup and hold times.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

c8SAMSUNG
Bectronics

554

KS54HCTLS
KS74HCTLS

1601169
01

Synchronous 4-Bit Up/Down
Decade and Binary Counters

LOGIC DIAGRAMS

'168

I

=8SAMSUNG
Electronics

555

KS54HCTLS
KS74HCTLS

168'1.6
.9
'I

Synchronous 4-Bit Up/Down
Decade and Binary Counters

LOGIC DIAGRAMS (Continued)
LOAD -,-(9-=-)_ __

B

'169

(4)

(12)

Oc

C (5)'

D (6)

'168

'169

LO~A:~~=
8~~=

DATA
INPUTS

C~~=

lo---lr=
UfO::: . :!

CLKV1i.r......

" __________~
ENPandENT-'L~~:~:

Oo::J

RCO---:'~~
--- : 7:: 8
9
I

0

I

21

• .'

2: 2 :

II-----COUNT UP-l,NHIBIT-1

-----

1

Uo

9

Load (preset) to BCD seven
Count up to eight nine (maximum), zero, one, and two
Inhibit
Count down to ohe, zero (minimum), nine, eight, and seven

=8SAMSUNG
Electronics

7

- - :13,: 14

I

I- COUNT DOWN-

LOAD
IIIstrated above is the following sequence:
1.
2.
3.
4.

8

,
RCO--:'~
15

i:
1

0

1

2:

U

,

2: 2i

I~COUNT UP--+-INHIBIT~

1

0

15 14

~COUNT

13

DOWN--

LOAD
Ilistrate~

above is the following sequence:
1. Load (preset) to BCD seven
2. Count up to eight nine (maximum), zero, one. and two
3. Inhibit
4. Count down to onl!. zero (minimum), nine. eight. and seven

556

KS54HCTLS
KS74HCTLS

1681169
~

Synchronous 4-Bit Up/Down
Decade and Binary Counters

FUNCTION TABLE
OUTPUTS

INPUTS

OPERATING MODE
ClK

UfD

ENP

ENT

lOAD

Dn

an

RCO

Parallel Load

t
t

X
X

X
X

X
X

I
i

i
h

L
H

(1 )
(1)

Count Up

t

h

I

I

h

X

Count Up

(1 )

Count Down

t

I

I

I

h

X

Count Down

(1)

Hold

t
t

X
X

h
X

X
h

h
h

X
X

qn
qn

(1 )
H

H = HIGH voltage level steady state
h=HIGH voltage level'one setup time prior to the LOW-to-HIGH clock transition
L=LOW voltage level steady state
I=LOW voltage level one setup time prior to the LOW-to-HIGH clock transition
X=Don't care
q=Lower case letters indicate the state of the referenced output prior to the LOW-to-HIGH clock transition
t';"LOW-to-HIGH clock transition
NOTE:
1. The RCO is LOW when ENT is LOW and the counter is at Terminal Count Terminal Count Up is (HHHH) and Terminal
Count Down is (LLLL) for '169.
The RCO is LOW when ENT is LOW and the counter is at Terminal Count. Terminal Count Up is (HLLH) and Terminal
Count Down is (LLLL) for '168.

Absolute Maximum Ratings*
Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vec +0.5V)
±20 rnA
uC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 rnA
Continuous Current Through ,
Vce or GND pins
± 125 rnA
Storage Temperature Range, TsIg . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tl
Unused inputs must always be tied to an appropriate logiC
voltage level (either Vee or GND)

557

I

1681169
1/

KS54HCTLS
KS74HCTLS

Synchronous 4-BitUplDown
Decade and Binary Counters

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vce=5V±10% Unless Otherwise Specified)

KS54HCTLS
KS74HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Ta=25°C

Symbol Test Conditions

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

ViN = VIH or VIL
10=-20",A
lo=-4mA

Vee -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20",A
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0:1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc·

8.0

80~0

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Ice

Vee Vee -0.1
3.98
4.2
0

VIN=VCC or GND
lOUT = O",A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
IOUT=O",A

AC ELECTRICAL CHARACTERISTICS
Conditions t

(Input tr , tf~6 ns), HCTLS168, HCTLS169

T.=25°C
Vcc=5.0V

KS74HCTLS
KS54HCTLS
T.=-40°Cto +85°C T.= -55°·C to +125°C
Vcc=5.0V:t 10%·
Vcc=5.0V:t 10%

Characteristic

Symbol

Maximum Operating Froguency

f max

35

30

25

20

Maximum Propagation Delay,
CLK to RCO

~

26

35

44

52

26

35

44

52

Maximum Propagation Delay,
CLK to Ary Q

-

tpLH

17

22

28

33

tpHL

17

22

28

33

Maximum Propagation Delay,
ENT to RCO

~

15

20

25

30

tPHL

15

20

25

30

Maximum Propagation Delay,
UfO to RCO

~

20

27

34

40

tPHL

20

27

34

40

tw

12

16

20

24

ns

A, B, Cor 0

12

16

20

24

ns

ENP or ENT

12

16

20

24

12

16

20

24

Typ

tpHL

Minimum Pulse Duration,
CLK high or low
I

Minimum
Setup Time
Before CLKt

tsu

LOAD

UfO

CL=50pF

Unit

Guaranteed Limits

MHz
ns
ns
ns
ns

II;:)

ns

12

16

20

24

ns

th

0

0

0

0

ns

Maximum Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

Minimum Hold Time,
Data after CLKt

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2

pF
pF
fin.

t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

558

KS54HCTLS
KS74HCTLS

173

4-Bit D-Type Registers with 3-State Outputs

DESCRIPTION

FEATURES
.• Gated output control lines for enabling or disabling
the outputs
• Fully independent clock for operation in parallel-load
or hold modes
• For application as bus buffer registers
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10l = 24 rnA @ VOL = O.SV for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.SV
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +8SoC
KSS4HCTLS: -55°C to +12SoC
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 4-bit registers contain D-type flip-flops with 3-state outputs, capable of driving highly-capacitive or low-impedance
loads. This provides the device with the capability of being connected directly to and driving the bus lines in a busorganized system without need for interface or pull-up components.
Gated enable inputs are provided for controlling the entry
of data into the flip-flops. When both data-enable inputs
are low, data at the 0 inputs are loaded into their respective flip-flops on the next positive transition of the buffered
clock input. Gated output control inputs are also provided. When both are low, the normal logic states of the four
outputs are available for driving the loads or bus lines. The
outputs are disabled independently from the level of the
clock by a high logic level at either output control input.
The outputs then present a high impedance and neither
load nor drive the bus line. Detailed operation is given in
the function table.
To minimize the possibility that two outputs will attempt to
take a common bus to oPPosite logic levels, the output control circuitry is designed so that the average output dis?ble
times are shorter than the average output enable times.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vec and
ground.

FUNCTION TABLE

PIN CONFIGURATION

M

Vee

N

CLR

10
20
30

10
20

40

30
40

CLK

<32

GNO

61

Input
Clear
H
L
L
L
L
L

Clock
X
L

t
t
t
t

Output

Data Enable

Data

G1

G2

0

X
X
H
X
L
L

X

X
X

X
X
H
L
L

X
X
L
H

Q

L

00
00
00
L
H

I

When either Mor N (or both) is (are) high the output is disabled
to the high-impedance state; however sequential operation of the
flip-flops is not affected.

=8SAMSUNG
Electronics

559

I

KSS7544HHCCTTLLSS
K

17~J
1·~·4·Bit D-Type Registers

wifff3-State (j·utput'S:'~:·

LOGIC DIAGRAM

OUTPUT
CONTROL

f

l

M

(1)

N -(-2)~..J

DATA 1 0 ....:..(1....:..4)~_ _ _ _

DATA
ENABLE

JG1

+---r-......

>-------10

01

(9)

ClR

1

<32 (1 0)

(13)

DATA 2D----+---~---

>---+--+----1 0
. . . . . . . ._ _1 ......

ClK
Q

~--r-.. ~.--(4)_

02

ClR

>--1-+---1 0

(12)

DATA 3D----+-----1f--.......--r-.....

03
ClR

DATA 4D ...:(....;..11....:..)-f--.......~----I~

ClK

a "---1 >c:>--_(6_)-

04

ClR

\ .

c8SAMSUNG
Electronics

560

KS54HCTLS
KS74HCTLS

173

4-Sit D-Type Registers with 3-State Outputs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 rnA
Continuous Current Through
Vee or GND pins
±250 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional oparation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vce=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ

KS74HCTLS
KS54HCTlS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

I

f-----.

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20!-,A
10= -6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20!-,A
10=12mA
10=24mA

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

!-,A

Maximum 3-State
Leakage Current

102

Output Enable
=VIH
VOUT=Vee or GND

±0.5

±5.0

±10.0

!-,A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

!-,A

2.7

2.9

3.0

Additional Worst
Case Supply
Current

t:..lee

VIN=Vee or GND
IOUT=O!-,A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
IOUT=O!-,A

c8 SAI\IISUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

I

mAl

561

KS54HCtLS' 17~
KS74HCTLS I,;} 4-Bit D-Type Registers with 3-State Outputs
AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Maximum Clock Frequency

f max

(Input tr , tf~6 ns), HCTlS173
KS74HCTLS
KS54HCTLS
T.=25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vee = 5.0V
Vee=5.0V±10%
Vee=5.0V± 10%

Condltlons t

Guaranteed Limits

Typ

45

30

25

20

CL=50pF
CL=150pF

20
23

27
30

34
39

41
47

CL=50pF
CL=150pF
r-----CL,=50pF
tpHL
CL =150pF

20
23

34
39

41
47

22
25

27
30
---c----30
33

37
42

45
51

CL=50pF
CL=150pF

18
21

25
28

37
43

CL=50pF
CL=150pF

18
21

25
28

31
36
31
36

15

20

25

30

15

20

25

30

10

13

17

20

10

13

17

20

15

20

25

30

8

11

tpLH
Maximum Propagation
Delay, ClK to any Q
Maximum Propagation
Delay, ClR to any Q
Maximum Output Enable
Time, M or N to any Q

tpHL

tPZH
r----- RL=1 kG

tPZL
Maximum Output Disable
Time, M or N to any Q

tpHZ

f--

RL = 1 kG, CL =50pF

tpLZ

ClK High
Minimum
or low
Pulse Width ClR High

tw

G1 and G2
Minimum
I---~~-----before ClKt Data

tsu

~~--

Minimum
Hold Time
After ClKt

---

-.-~---~------

<31 and <32

---.-

th

Data

~-

Maximum Input Capacitance
Maximum Output
Capacitance
r---Power Dissipation
Capacitance *

ns

ns
1----

--

ns

--

ns

37
43

14

17

-~-.-

ClR Inactive

MHz

5

7

8

10

a
a

0

0

0

0

0

0

ns

---

ns

~.~~~--~--

GOUT

~-

pF

5

CIN
Output Disabled

pF

10
- - - 1--------

-- - - ----_.-- ---_ .. - --_. -------

Cpo

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

ns

- ------

pF
2

fin.

562

KS54HCTLS 1;r~/1;r~
KS74HCTLS
'/

Hex/Quad O-type Flip-Flops
with Clear

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The'1 74 contains six, and the' 1 75 contains four D-type
flip-flops all sharing a common clock and a common clear.
The'1 74 features single rail outputs for every flip-flops
whereas the '175 has complementary outputs.
Information at the D inputs meeting the setup time requirements is transferred to the outputs on the positivegoing edge of the clock pulse. Clock triggering occurs at
a particular voltage level and is not directly related to the
transition time of the positive-going pulse. When the clock
input is at either the high or low level, the D input signal
has no effect at the output.

a

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

I

FUNCTION TABLE

PIN CONFIGURATIONS

'174

(Each Flip-Flop)

ern

Vee

10

60

10

60

20

50

20

50

3D

40

30

40

GNO

ClK

Inputs

Outputs

CLR

ClK

D

Q

ot

L
H
H
H

'X

X
H
l
X

L
H
L

H
l
H

00

00

t
t
l

t '175 only

'175
ClR

Vee

10

40

10
10

40

2D
2Q

30

20

30

GNP

ClK

40
3D

c8SAMSUNG
Electronics
II

563

KS54HCTLS
KS74HCTLS

17411·75

Hex/Quad tJ-type Flip-Flops
with Clear

LOGIC DIAGRAMS
'175

'174
(3)

a

0

10

(4)

(2)
10

a

0

10

CLOCK

CLOCK

CI.EAR·

CLEAR

a-

(4)

a

0

20

(5)

(5)
20

a

0

20

(2)
10

(3)
10

(7)

20

CLOCK

CLOCK

(6)

Ci

(6)
3D

a

0

20

CLEAR

CLEAR

(12)

(7)

30

3D

0

a

(10)

a

(11)

30

CLOCK

30

CLEAR

a

(11)
4D

0

(10)

40

CLOCK

a

40

(15)
40

CLK

(14)
0
CLEAR

40

CLEAR

CLR

(13)
50

(12)
Q

0

50

CLOCK

CLEAR

(14)
60
CLK

a

0

(15)
60

CLOCK

CLEAR

CLR

c8SAMSUNG
Electronics

564

KS54HCTLS 17~/17.5
KS74HCTLS I
j

Hex/Quad D-type FIi-Flops
with Clear

'/

Absolute Maximum Ratings*
Supply Voltage Range V e e , - 0 . 5 V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, IC)K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 rnA
Continuous Current Through
Vee or GND pins
± 125 rnA
Storage Temperature Range, T5tg . . . -6SoC to +1S0°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 6SoC to 8SoC

Recommended Operating Conditions
Supply Voltage, Vee
4.SV to S.SV
DC Input & Output Voltages *, VIN, Vour
OV to Vee
Operating Temperature
KS74HCTLS: -40°C to +8SoC
Range
KSS4HCTLS: -SsoC to +1_2SoC
Max SOO ns
Input Rise & Fall Times, t r , t,

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=SV±10% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ

KS74HCTLS

KS54HCTLS

Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2_0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vce -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
O.S

0.1
0.4

V

±0.1

±1.0

±1.0

J.lA

8.0

80.0

160.0

J.lA

2.7

2.9

3.0

rnA

f---

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20J.lA
lo=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20J.lA
10=4mA
10=8mA

Maximum Input
Current

liN

VIN=Vee or GND

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

t:.lee

VIN=Vee or GND
lour=OJ.lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour=OJ.lA

=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

--

565

I

Hex/Quad D-type Flip-Flops
with Clear

KS54HCTLS 1;r~/1;r~
KS74HCTLS
AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input tr , tf~6 ns), HCTlS174, HCTlS175
KS74HCTLS
T,.=25°C
TA = -40°C to +85°C TA= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V:10%
Vcc=5.0V: 10%
Typ

Maximum Clock Frequency
Maximum Propagation Delay,
ClK to Q or Q
Maximum ProQagation Delay,
ClR to Q or Q

I

40

30

25

20

~

22

30

37

45

tPHL

22

30

37

35

~

26

35

43

tpHL

Data
Minimum Setup
Time before ClKt I ClR Inactive

tsu

Minimum Hold Time,
Data after ClKt

th

Minimum Pulse
Width

IClK High or low

Guaranteed Limits

f max

tw

IClR low

Maximum Input Capacitace

CIN

Power Dissipation Capacitance·

Cpo

CL=50pF

26

35

43

52
52

10

13

17

20

12

16

20

25

a

0

0

0

10

13

17

20

10

13

17

20

c8SAMSUNG
Electronics

--

ns

ns
ns
ns
pF

5

" Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

MHz

pF
fin.

566

KS54HCTLS
KS74HCTLS

181

Arithmetic Logic Unit/
Function Generator

FEATURES

DESCRIPTION

• Arithmetic operating modes:
Addition
Subtraction
Shift operand A one position
Magnitude comparison
Plus 12 other arithmetic operations
• logic function modes:
Exclusive-OR
Comparator
AND,NAND,OR,NOR
Plus 10 other logic operations
• Full look-ahead for high-speed operations
on long words

The '181 is an Arithmetic Logic Unit (ALU)lFunction
Generator that performs 16 binary arithmetic operations
on two 4-bit words as shown in table 1 and 2. These operations are selected by the four functions select lines (SO,
81,82,83) and include addition, subtraction,. decrement
and straight transfer. When performing arithmetic manipulations, the internal carries must be enabled by applying a
low level voltage to the mode control input(M). A full carry
look-ahead scheme is made available in these devices for
fast, simultaneous carry generation by means of 2 cascadeoutputs (p and (3) for the 4-bits in the package. When used in conjunction with HCTL8182, high-speed arithmetic
operation can be performed. The typical addition times
shown in table below illustrates how little is required for
addition of longer words when full carry look-ahead is
employed.

• Function, pin-out, speed and drive compatibility with
54174lS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current Outputs:
IOL=8mA @ VOL=O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS:-55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

If high speed is not important, a ripple-carry input (C~) and
a ripple-carry output (C.+4) are available. However, the
ripple-carry delay has also been minimized so that arithmetic
manipulations for small lengths can be performed without
external circuitry.
The'1 81 will accommodate active-high or active-low data,
if the pin deSignations are interpreted as shown below.
8ubtraction is accomplished' by 1's complement addition
where the 1 's complement of the subtrahend is generated
internally. The resultant output is A-B-1 , which requires and
end-around or forced carry to provide A-8.
The '181 can also be utilized as a comparator. The A=8
output is internally decoded from the function outputs (FO,
, F1, F2, F3) so that when two words of the equal magnitude
are applied at the A and 8 inputs, it will assume a high level
to indicate equality (A=8). The ALU should be in the subtract mode with C.=H when performing the comparison.
The A=8 output is open-drain so that it can be wire-AND
connected to give a comparison for more than four bits.
The carry output (C n +4) can also be used to supply
relative magnitude information. Again, the ALU should be
placed in the subract mode by placing the function select
input 83, 82, 81, 80 at L,H,H,L respectively.

PIN CONFIGURATION
80
AO
S3
S2
S1
SO
c.

81
A2
82
A3
83

M

G

vee

1\1

1'0
1'1
F2

C.+4

P
A=B

J!3

GND

Pin number

2 .

1

23

22

21

20

19

18

9

10

11

13

7

16

15

17

Active-Low Data (Table1)

Ao

80

A1

81

A2

82

A3

83

Fa

F1

F2

F3

Cn

Cn +4

P

Active-High Data (Table 2) Ao

80

A1

81

A2

82

A3

83

Fa

F1

F2

F3

Cn

Cn +4

X

G
y

cRSAMSUNG
• • Electronics

II

These circuits have been d to not only incorporate all of
the designer'S requirements for arithmetic operations, but
also to provide 16 possible functions of two boolean
variables without the use of external circuitry. These logical
functions are selected by use of the four function select
inputs (80, 81,82, 83) with the mode control input (M)
at a high level to disable the internal carry.
The 16 logic functions are detailed in Tables 1 and 2 and
include exclusive-OR. NAND. AND. OR and NOR functions.

567

I

KS54HCTLS
KS74HCTLS

181

Arithmetic Logic Unitl
Function Generator

ALU SIGNAL DESIGNATION .
The '181 can be used with the signal designations.
The logic functions and arithmetc operations obtained with
signa/designations as in Tab/e 1.
These devices provide speeds and dri~e capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels

allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

LOGIC DIAGRAM

(3)

~~-,-(4.:.-)_ _....,
S1---....,

so

~

(16)

___.a.../----Cn+4
(15) j5

(13) F3

(11) _
F2

B1 (22)

(23)
A1
(10) F1

80(1)

(9) FO
AO (2)

'M

Cn

(7)

/'=8 SAMSUNG
Electronics

568

181

KS54HCTLS
KS74HCTLS

Arithmetic Logic Unitl
Function Generator

a Table 1
Actlv.Low Data

Selection

M = L; Arithmetic Operations

M=H
Logic
Functions

Cn=L
(no carry)

F=A
F=AS
F=A + B
F=1
F=A + B
F=B

F=A Minus 1
F=AB Minus 1,
F=AB Minus 1
F=Minus 1 (2's Comp)
F=A Plus (A + '9')
F=AB Plus (A + S)
F = A Minus B Minus 1
F:=A + B
F:=A Plus (A + 8)
F:=A Plus B
F=AB Plus (A + B)
F=(A + 8)
F=A Plus A*
F:=AB Plus A
F=AS Plus A
F=A

S3

S2

S1

SO

L
L
L
L
L
L
L
L

L
L
L
L

L
L

H

H
H'

H

L
L

H

H
H

L

F:=~

H

L
L

H

H
H

H

L
L

H

H
H

H

F:=A + B
F=AB
F=A EE> B
F=B
F:=A + 8
F=O
F=AB
F=AB
F=A

H
H
H

ti

H
H
H

H

H
H
H
H
L
L
L
L

H
H
H
H

L

L
L

L
L
L
L

Cn=H
(with carry)
F=A
F=AB
F=AB'
F=Zero
F=A Plus (A + "9) Plus 1
F:=AB Plus (A + B) Plus 1
F=A Minus B
F:=(A + '9') Plus 1
F:=A Plus (A + B) Plus 1
F:=A Plus B Plus 1
F=AB Plus (A + B) Plus 1
F=(A + B) Plus 1
F:=A Plus A Plus 1
F=AB Plus A Plus 1
F:= AS Plus A Plus 1
F:=A Plus 1

a Table 2
M == L; Arithmetic Operations

M=H
Logic
Functions

S3

S2

S1

SO

L
L
L
L
L
L
L
L
H

L
L
L
L

L
L

H

H
H

H

L
L

H

H
H

L

F=~

H

L
L

L

F=AS
F==A + B

H

F:=~

L

F=B
F=AB
F=1
F=A + 8
F=A + B
F=A

H
H
H
H
H

H
H

H
H
H
H
L
L
L
L

H
H
H
H

I

Activ.High Data

Selection

L

L
L

H
H

H

L
L

H

H
H

H

L
L

F=A
F=A+""'S'
F=AB
F:=O
F=AS
F:=8

~n=L
(no carry)

F=A
F:=A + B
F==A + 8
F:=Minus 1 (2's Comp)
F=A Plus AS
F=(A + B) Plus AS
F == A Minus 8 Minus 1
F==AS Minus 1
F:=A Plus AB
F==A Plus B
F=(A + '9') Plus AB
F=AB Minus 1
F=A Plus A*
F=(A + B) Plus A
F=(A + S) Plus A
F=A Minus 1

'l:!n=H
(with carry)
F=A Plus 1
F=(A + B) Plus 1
F:=(A + B) Plus 1
F:=Zero
F:= A Plus AS Plus 1
F:=(A + B) Plus AS Plus 1
F=A Minus B
F:=AS
F:= A Plus AB Plus 1
F:=A Plus B Plus 1
F:=(A + '9') Plus AB Plus 1
F=AB
F:=A Plus A Plus 1
A:=(A + B) Plus A Plus 1
F:=(A + S) Plus A Plus 1
F:=A

* Each bit is shifted to the next more significant position

=8SAMSUNG
Electronics

569

KS5.4HCTLS

181

Arithmetic' Logic Unitl

KS74HCTLS

Function Generator

Absolute Maximum Ratings·
t Power Dissipation temperature d,erating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ..... . . -O.SV to + 7V
DC Input Diode Current, hK
(VI < -O.5V or VI > Vec +O.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
.
(Vo < -O.5V or Vo > Vcc +O.5V) .... ±20 mA
Continuous Output Clirrent Per Pin, 10
(,..-O.5V < Vo < Vcc +O.5V) .. , , ..... ±70 mA
Continuous Current Through
Vce or GND pins ................ ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt, ... ' .. 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages *, VIN, Your . . OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure ~o these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)

Ta=25°C
Typ

KS54HCTLS
KS74HCTLS
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

lee

VIN=Vee or GND
10ur=0",A

8.0

80.0

160.0

/AA

Additional Worst
Case Supply
Current

per input in
VI=2.4V
.6. Icc other Inputs:
at Vee or GND
lour=O",A

2.7

2.9

3.0

mA

=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

570

KS54HCTLS
KS74HCTLS

181

Arithmetic Logic Unitl
Function Generator

INPUT PAIRS HIGH/NOT HIGH TEST TABLE
FUNCTION INPUTS: S2 = M = 4.5 V. so = S1 =' S3 = 0
INPUT
PARAMETER

UNDER
TEST

tpLH

Ai

OTHER INPUT
SAME BIT

APPLY 4.5 V
Bi

APPLY GND
None

tpHL
tpLH

Bi

Ai

None

tpHL
tpHL

Ai

Bi

None

tpHL
tPLH

Bi

AI

None

tpHL

v

OTHER DATA INPUTS

OUTPUT

OUTPUT"

UNDER

WAVEFORM

APPLY 4.5 V

APPLY GND

TEST

Remaining

Remaining

p

B

In-Phase

A. C n
Remaining

Remaining

p

In-Phase

C n +4

Out-ot-Phase

C n +4

Out-ot-Phase

B.

Cn

A

Remaining

Remaining

A. C n

B

Remaining

Remaining

B, C n

A

PARAMETER MEASUREMENT INFORMATION
SUM MODE TEST TABLE
FUNCTION INPUTS: SO=S3=4.5 V. S1 =S2=M=0 V
INPUT
PARAMETER

UNDER
TEST

tpLH

Ai

OTHER INPUT
SAME BIT

APPLY 4.5 V
Bi

APPLY GND
None

OTHER DATA INPUTS
APPLY 4.5 V

A and B

tpLH

Remaining

Bi

Ai

None

Ai

Bi

Bi

Ai

None

None

Ai

None

Bi

Bi

None

Ai

tpHL
tpLH

Cn

None

Ai

None

None

tpHL
tPLH

Bi

tPHL
tPLH
tpHL

Fi

In-Phase

Cn

Fi

In-Phase

Remaining

p

In-Phase

None

p

In-Phase

G

In-Phone

G

In-Phase

Remaining

-

-

A and B. C n

tpHL
tpLH

Cn

Ii: andB. C n

tPHL
tpLH

TEST

None

tpHL
tpLH

WAVEFORM

A and B

tpHL
tpLH

OUTPUT

UNDER
APPLY GND

Remaini,ng

tPHL

OUTPUT

Bi

None

Ai

Remaining

B
Remaining

B

Remaining
-

A,C n

Remaining

A,

Cn

All

All

Any F

A

B

or C n+4

Remaining

Remaining

B

A,C n

Remaining

Remaining

B

A.

Cn

In-Phase

Cn +4

Out-ot-Phase

Cn +4

Out-ot-Phase

571

I

KS54HCTLS
KS74HCTLS

181.

Arithmetic Logic Unitl
Function Generator

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons f
CL=50pF

i

KS74HCTLS
KS54HCTLS
T.=25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
~cc=5.0
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

14 18
M=OV
I--tPHl Sum or Diff Mode 14 18

23

27

23

27

Propagation Delay.
Cn +4

M=S1 =S2=OV
SO=S3=4.5V

20 28

35

42

I---

20 28

35

42

Propagation Delay.
Cn +4

1------

M=SO=S3=OV
S1 =S2=4.5V,

25 34

42

50

25 34

42

50

M=S1 =S2=OV
SO=S3=4.5V

22 31

39

47

22 31

39

47

M=SO=S3=OV
S1 =S2=4.5V

23 32

40

48

23 32

40

48

M=SO=S3=OV
S1 =S2=4.5V

25 34

43

51

25 34

43

51

M=S1 =S2=OV
SO=S3=4.5V

25 34

42

50

25 34

42

50

M=S1 =S2=OV
SO=S3=4.5V

25 34

42

50

25 34

42

50

M=SO=S3=OV
S1 =S2=4.5V

25 34

42

50

25 34

42

50

A or B to

Propagation Delay

A or B to IT
Propagation Delay

A or B to G
Propagation Delay

A or B to 15
Propagation Delay
A or B to P
i Propagation

Delay

A or B to Fi
Propagation Delay

A or g to Fi

tplH
tplH

tpHl
tplH

tpHl
tplH
r----tPHl
tplH
r----tpHl
tpLH
r----tpHL
tplH
r----tPHL
tplH
r----tPHL
tpLH
I---

tpHl

ns
ns
ns
ns
ns
ns
ns
ns
ns
~~----:-

-~~

iPropagation Delay

A or B to

A=B

~ropagation Delay
A or B to A=B

Propagation Delay

tplH
I---

M=4.5V

tpHL

20 29

35

42

20 28

35

42

tplH

M=SO=S3=OV

25 34

42

50

tpHl

S1 =S2=4.5V

25 34

42

50

20 28

35

42

20 28

35

42

I---

tplH
tpHl

i Input Capacitance
IPower Dissipation

CIN

I Capacitance *

Cpo

5

--ns

- - f-----

ns

----

f--------.

Cn to any F

Unit

Guaranteed Limits

Propagation Delay.
C n to Cn +4

A or B to

I

(Input tr • tfE;;6 ns), HCTLS181

ns
pF
pF

* Cpo determines the no-load dynamic power dissipation: PO=CPD Vee' fin~
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

572

KS54HCTLS
KS74HCTLS

181

Arithmetic Logic Unitl
Function Generator

PARAMETER MEASUREMENT INFORMATION
LOGIC MODE TEST TABtE
FUNCTION INPUTS: S1 =S2=M=4.5 V, SO=S3=0 V
INPUT
PARAMETER

UNDER
TEST

tpLH

Ai

OTHER INPUT
SAME BIT
APPLY 4.5 V
Bi

APPLY GND
None

OTHER DATA INPUTS
APPLY 4.5 V

Remaining

None

A and B.

tpHL
tpLH

Bi

Ai

None

APPLY GND

A and B.

OUTPUT

UNDER

WAVEFORM

TEST
Fi

Out·ot-Phase

Fi

Out-ot-Phase

Cn

Remaining

None

tpHL

OUTPUT

Cn

INPUT BITS EQUAUNOT EQUAL TEST TABLE
FUNCTION INPUTS: SO=S3=M=4.5 V, S1 =S2=0 V
INPUT
PARAMETER

UNDER
TEST

tpLH

Ai

OTHER INPUT
SAME BIT
APPLY 4.5 V
Bi

APPLY GND
None

tpHL
tpLH

Bi

Ai

None

Ai

None

Bi

tPHL
tPLH

Bi

None

Ai

Ai

Bi

None

tpHL
tpLH
tpHL
tpLH

Bi

Ai

None

Ai

None

Bi

tpHL
tpLH

Bi

None.

tpHL

c8SAMSUNG
Electronics

Remaining

A and B.

Remaining

Remaining

Ai

B.

A and B. C n
Remaining

Remaining

Remaining

APPLY GND

TEST

None

P

Out-ot-Phase

None

P

Out-ot-Phase

None

P

In-Phase

None

is

In-Phase

None

C n +4

In-Phase

None

Cn +4

In-Phase

None

C n +4

Out-ot-Phase

None

C n +4

Out-ot Phase

Cn

Remaining

A and B.

WAVEFORM

Cn

Aand B. C n
A and B.

OUTPUT

UNDER

Cn

Remaining

B.

OUTPUT

Cn

A and B. Cn

A and

tpHL
tpLH

APPLY 4.5 V

A and

tpHL
tplH

OTHER DATA INPUTS

Cn

573

I

KS54HCTLS
KS74HCTLS

181

Arithmetic Logic Unitl
Function ~enerBtor

DIFF MODE TEST TABLE
FUNCTION INPUTS: S1 S2 4.5 V,

= =

INPUT
PARAMETER

TEST
tpLH

OTHER INPUT
SAME BIT

UNDER

Ai

APPLY 4.5 V
None

APPLY GND
Si

tpHL
tPLH

8i

Ai

None

tpHL
tpLH

Ai

None

ei

so =S3 = M =0 v

OTHER DATA INPUTS
APPLY 4.5 V

APPLY GND

Remaining

Remaining·

A

e, C n

Remaining

Remaining

A

e, Cn

None

Si

Ai

None

None

Ai

Bi

None

None

Bi

None

Ai

None'

Ai

None

Bi

tpHL
tpLH

Si

Ai

None

tpHL
tpLH

Cn

None

None

tpHL
tpLH

Remaining

Remaining

Remaining

A

S, C n

Remaining

Remaining

A

S, C n

All

None

In-Phase

Fi

Out-ot-Phase

p

In·Phase

p

Out-ot-Phase

G

In-Phase

G

Out-ot-Phase

A=B

In-Phase'

A=B

Out-ot-Phase

Ai

Si

None

None

Bi

None

ai

None

Remaining

A,

'

In-Phase

Cn +4

Out-ot-Phase

C n +4

In-Phase

S, C n

Remaining
A, e, C n

c8SAMSUNG

C n +4
or any F

AandB

tPHL

Electronics

Remaining

Remaining

tpHL
tPLH

Fi

A and S, C n

tPHL
tPLH

TEST

A and e, C n

tpHL
tPLH

WAVEFORM

A and S, C n

tpHL
tpLH

OUTPUT

UNDER

A and S, C n

tpHL
tPLH

Remaining

OUTPUT

574

KS54HCTLS
KS74HCTLS

182

Look Ahead Carry Generator

FEATURES

DESCRIPTION

• Compatible Carry Functions for direct AlU connection
• Cascadable to perform look-ahead across n-bit
adders.
• High output current drive: IOL=8mA @ VOL=05V
• Low power consumption characteristic of CMOS
• Direct interface capability to TTL, NMOS and CMOS
devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:

The '182 is a high-speed, look-ahead carry generator,
capable of anticipating a carry across four binary adders
or group of adders. These devices can be cascaded to
perform full look-ahead across n-bit adders. Carry,
generate-carry, and propagate-carry functions are provided
as shown in the pin designation table.

KS74AHC;T: - 40°C to + 85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

Carry input and output of the ALU's are in their true from,
and the carry propagate (P) and carry generate (G) are in
negated form; therefore, the carry functions (inputs, outputs, generate, and propagate) of the look-ahead
generators are implemented in the compatible forms for
direct connection to the ALU. Reinterpretations of carry
functions, as explained on the 1 81 data sheet are also applicable to and compatible with the look-ahead generator.
Positive logic equations for the 182 are:

PIN CONFIGURATION
131

Vee

P1

P2

GO
PO

Cn

When used in conjuction with the AHCT181 arithmetic logic
unit, these generators provide high-speed carry look-ahead
capability for any word length. Each 182 generates the
look-ahead (anticipated carry) across a group of four ALUs
and, in addition, other carry look-ahead circuits may be
employed to anticipate carry across sections of four lookahead packages up to n-bits. The method of cascading circuits to perform multi-level look-ahead is illustrated under
typical application data.

~2

Cn+x=GO + PO Cn
Cn+y=G1 + P1 GO + P1 PO Cn
Cn+z=G2 + P2 G1 + P2 P1 GO + P2 P1 PO Cn
G-G3 + P3 G2 + P2 G1 + P3 P2 P1 GO
P=P3 P2 P1 PO

G3

P3
P
GND

Cn + z

PIN DESIGNATIONS
Function

Designation

Pin No

GO,G1,G2,G3

3,1,14,5

PO,P1,P2,P3

4,2,15,6

Cn

13

Cn+x, Cn+y, Cn+z

12,11,9

G

10

Active Low Carry Generate Output

j5

7

Active Low Carry Propagae Output

Vec

16

Supply Voltage

GND

8

Ground

=8SAMSUNG
Electronics

Active Low Carry Generate Inputs
Active Low Carry Propagate Inputs
Carry Input, Active High
Carry Outputs

575

I

KS54HCTLS
KS74HCTLS

·182

Look Ahead ,Carty Generator

FUNCTION TABLES

LOGIC DIAGRAM

FOR GOUTPUT
INPUTS
<33

L
X
X
X

00

OUTPUT
P2

P1

G

X
X
X
X
X
L
X
X
L
X
X
L
X
L
L
X
X
L
L
L
All other combinations

X

L

X

I:.
L

G2

G1

P3

FOR P OUTPUT
INPUTS

9UTPUT

PO

P3 P2 P1

L

L L L
All other
combinations

X
L

(7)

~

L
H

FOR C n+ x OUTPUT
INPUTS
OUTPUT

P

GO

L

L
X
X
X
H
L
All other
combinations

H

PO

Cn

Cn+ x

H
H
L

Cn+y OUTPUT
OUTPUT

INPUTS
G1

L
X
X,

GO

P1

PO

Cn

Cn+ y

X
X
H

H
H
H
L

X
X
X
L
X
L
L
L
X
All other combinations
Cn+z OUTPUT

OUTPUT

INPUTS

G2
L
X
X
X

<31

GO

P2 P1

X
X X
X
X
L X
L
L
L
L
X
L
X
L
X
All other combinations

PO

Cn

Cn+z

X
X
X
L

X
X
X
H

H
H
H
H
L

H = high-level, L =.Iow level, X = dont' care
Any inputs not shown in a given table are don't care
witn respect to that output.
Figure; THE '182 IN A 64-BIT LOOK-AHEAD CARRY CIRCUIT

576

182

KS54HCTLS
KS74HCTLS

Look Ahead Carry Generator

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ..
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vcc +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) ......... ±35 rnA
Continuous Current Through
Vcc or GND pins
. .. ± 125 rnA
Storage Temperature Range, TSIg ... -.65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf ...
Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

KS54HCTLS
KS74HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

Vil

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

hN

Maximum Quiescent
Supply Current

Icc

VIN=VIH or Vil
10=-20~A

10= -4mA

Vcc Vcc -0.1
4.2
3.98

VIN=VIH or Vil

Additional Worst
Case Supply
Current

10=4mA·
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=VCC or GND

±0.1

±1.0

±1.0

~A

8.0

80.0

160.0

~A

2.7

2.9

3.0

rnA

10=20~A

VIN=VCC or GND
10uT=0~A

Iper input pin
VI=2.4V
L'llcc lother Inputs:
/,at Vcc or GND

0

10uT=0~A

=8SAMSUNG
Electronics

577

I

KS54HCTLS 182
KS74HCTL.S ~:". ,

Look Ahead Carry Generator

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlonsl

(Input tr , t~6 ns), HCTLS182

T.=25 Q C
Vc c =5.0V

KS74HCTLS
T.= -40°C to +85°C
Vcc=5.0V±10%

Typ

Propagation Delay Pi or Gi to
Cn +x C n+y, Cn +z

tpLH
r - - - CL=50pF
tpHL

~opa.9.8tion_Delay
Pi or Gi to G

tpLH
r - - - CL =50pF
tpHL

Propagation Delay Cn to
Cn + x, Cn +y, Cn +z

~

tPLH

. tpLH
r--tpHL

Propagation Delay

PI to P

CL=50pF

tpHL
CL=50pF

KSS4HCLTS'
T.=-55°Cto +125°C
Unit
Vee = 5.0V ±. 10%

Guaranteed Limits

19

26

32

39

19

26

32

39

19

26

32

39

19

26

32

39

25

27

34

41

25

27

34

41

15

20

25

30

15

20

25

30

ns
ns
ns
ns

--.-~.

Capacita~~

5
C'N
Cpo
*CPD determines the no-load dynamic power diSSipation: PD=Cpo Vee l
tFor Acc switching .test circuits and timing waveforms see section 2.

Input

pF
pF

Power Disipation Capacitance *

c8SAMSUNG
Electronics

fin.

578

KS54HCTLS
KS74HCTLS

183
Dual Carry-Save Full Adders

FEATURES

DESCRIPTION

•
•
•
•
•

The '1 83 is a dual full adder features an individual carry
output from each bit for use in multiple-input, carry-save
techniques to produce the true sum and true carry outputs with no more than 2 gate delays.

For use in high-speed wallace-tree summing
Fast addition operation
Low power consumption characteristic of CMOS
High output current drive: IOL=8mA @ VOL=O.5V
Direct interface capability with TTL, NMOS and
CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
_
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

e-4~~~----+---'---'---+---,-----~

A.

Vrx;

He
B.

At,

C.

Cb

Coo

Coli

S.

He

GND

s..

e.,-

I

A

s

FUNCTION TABLE
(Each Half)
Output

Inputs

--

A

B

C

S

Co

L
H
L

L
L
H
L
H
L
H
H

L
L
L
H
L
H
H
H

L
H
H
H
L
L
L
H

L
L
L
L
H
H
H
H

L
H
H
L
H

=8SAMSUNG
Electronics

579

KS54HCTLS
KS74HCTLS

183

Dual Carry-Save Full Adders

Absolute Maximum Ratings*

of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI> Vcc +0.5V) . . .. ±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-O.5V < Vo < Vcc +0.5V)
±35 rnA
Continuous Current Through
Vce or GND pins. .
±125 mA
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions

* Absol\Jte Maximum Ratings are those values beyond

Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vce
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTlS: - 55 0 C to + 1 25 ° C
Input Rise & Fall Times, tr , tf
.. Max 500 ns

which permanent damage to the device may (j)ccur.
These are stress ratings only and functional operation

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc==5V± 10% Unless Otherwise Specified)

T.=25°C

Symbol Test Conditions

KS54HCTLS
KS74HCTLS
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

. VIN=VIH or VIL
10=-20",A
VOH
10=-4mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Vcc Vcc -0.1
4.2
3:.98

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=4rnA
10=8mA

Maximum Input
Current

hN

VIN'""VCC or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

VIN=VCC or GND
lOUT == o",A

2.0

20.0

40.0

",A

~Icc

per input in
VI=2.4V
other Inputs:
at Vcc or GND
10UT=OJAA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

0

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tro t~6 ns), HCllS 183
KS54HCTLS
KS74HCTLS
Ta=25°C
Ta= -40°C to +85°C Ta= -55°C to +125°C
Vee=5.0V
Vce=5.0V:t: 10%
Vee = 5.0V:t: 10%

Typ
Propagation Delay

tpLH
~

tpHL
Input Capacitance

CIN

Power dissipation Capacitance *

CPD

CL =50pF

c8SAMSUNG
Electronics

Guaranteed Limits

15 22

27

33

17 23

29

35

* Cpo determines the no-load dynamic power dissipation: PD=CPO VCC 2
t For AC switching test circuits and timing waveforms see section 2.

Unit

ns
pF
pF

fin.

580

KS54HCTLS
KS74HCTLS

190

Synchronous 4·Bit Up/Down
Decade Counters

FEATURES

DESCRIPTION

• Single down/up count control line
• Look-ahead circuitry enhances speed of cascaded
counters
• Fully synchronous in count modes
• Asynchronously presettable witl'! load control
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These are high-speed synchronous reversible 4·bit decade
counters, Synchronous counting operation is provided by
having all flip-flops clocked simultaneously so that the outputs change with each other when so instructed by the
steering logic. This mode of operation eliminates the output counting spikes normally associated with a synchronous
(ripple clock) counters.

B

vcc
A

aA

ClK

Ci'EN

~
MAXIMIN

DIU
ac

WAD

aD

C

GND

D

FUNCTION TABLE
OPERATING MODE

parallel load

DID

Cffil

CLK

Input

L

X
X

X

X

X

X

l
H

count down

H

hold (do nothing)

H

On
l
H

X
l
I
t
count up
- - t---.~ 1---- t-------- - - H
t
X
count down
I

H

t------.

OUTPUTS

INPUTS

LOAJ)
l

count up

-~--

X

X

H

X

no change

~ AND MAXIMIN FUNCTION TABLE

INPUTS

TERMINAL COUNT STATE

DID

~

ClK

OA

H
l
l
l
H
H

H
H
l
H
H
l

X

H
H
H
l
l
l

X

Lf
X
X

Lf

Oa
X
X

Oc

OD

X
X

H
H
H
l
l
l

X

X

l
l
l

l
l
l

These counters feature a fully independent clock circuit.
Changes at the control inputs (CTEN and DIU) that will
modify the operating mode have no effect on the contents
of the counter until clocking occurs. The function of the
counter will be dictated solely by the condition meeting
the stable setup and hold times.
These counters are fully programmable; that is, the outputs may each be preset to either level by placing a low
on the load input and entering the desired data at the data
inputs. The output will change to agree with the data inputs independently of the level of the clock input. This
feature allows the counters to be used as modulo-N dividers
by simply modifying the count length with the preset inputs.

PIN CONFIGURATION

as

The outputs of the four flip-flops are triggered on a low-tohigh-level transition of the clock input if the enable input
(CTEN) is low. A high at CTEN inhibits counting. The direction of the count is determined by the level of the downlup
(DIU) input. When DIU is low, the counter counts up and
when DIU is high, it counts down.

OUTPUTS
MAX/MINrJiCO
l
H

I

L

H

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs arid outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

Lf

l

I

H

I Lf
H

L

Two outputs have been made available to perform the
cascading function: ripple clock and maximum/minimum
count. The latter output produces a high-Ie~el output pulse
with a duration approximately equal to one complete cycle
of the clock while the count is zero (all outputs low) counting
down or maximum (9 or 15) counting up. The ripple clock
output produces a lOW-level output pulse under those same
conditions but only while the clock output to the enable
input of the succeeding counter if parallel clocking is used,
or to the clock input if parallel enabling is used. The
maximumlminimum count output can be used to accomplish
look-ahead for high-speed operation.

H

H=
l =
I =
X =
t =
l..f =

HIGH voltage level
lOW voltage level
lOW voltage level one setup time prior to the lOW-to-HIGH ClK transition
Don't care
lOW-to-HIGH ClK transition
one lOW level pulse
L= MAXIMIN goes lOW ON A lOW-to-HIGH ClK transition

=8SAMSUNG
Electronics

581

I

19·0

KS54HCTLS
KS74HCTLS

LOGIC DIAGRAM

CTEN
DIU

ClK

~~:~----4-~+--rr+--~

L5A5
A ~~~-r~Pr+-~-+~----------~r+---r.~~--;-~

B --_+-I

C

D

Typical load, count, and inhibit sequences

'{O~,X-.
,

I

DATAI3~
:.:L..=

INPUTS

.•
'I'

cJ"T:L=
I

Ir-

:

I

, D-+f -

Sequence;
(1) Load (preset) to BCD seven.
(2) Count up to eight, mine(maximum)
zero, one, and two.
(3) Inhibit
(4) Count down to one, zero
(minimum), nine, egiht,
and seven

NOTE A: Clear overrides load data, and count inputs.
Note B:When count up, count·down input must be high;

when counting down, countup in\put must be high.

c8SAMSUNG
Electronics

582

KS54HCTLS
KS74HCTLS

190

Synchronous 4-Bit Up/Down
Decade Counters

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee. . . . . . . . -0.5V to + 7V
DC Input Diode Current. hK
(VI < -0.5V or VI > Vee +0.5V) ... " ±20 rnA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 rnA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 125 rnA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage. Vec .............. 4.5V to 5.5V
DC Input & Output Voltages" ,VIN. VOUT . . OV to Vec
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times. tr • tf ......... Max 500 ns

.. Absolute Maximum Ratings are those values beyond
whieh permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25·C

Symbol T.st Conditions

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8.

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Minimum High-Level
Output Voltage

VOH

VIN==VIH or VIL
1o--20,..A
1o=-4mA

MaximUm Low-Level
Output Voltage

VOl

VIN=VIH or VIL
10 = 20,..A
1o-4mA
1o-8mA

Maximum Input
Current

lIN

VIN=Vee or GND

±0.1

±1.0

±1.0

,..A

Maximum Quiescent
Supply Current

Icc

VIN=Vee or GND
lour-O,..A

8.0

80.0

160.0

,..A

Additional Worst
Case Supply
Current

per input in
VI=2.4V
Alec other Inputs:
at Vee or GND
lour==O,..A

2.7

2.9

3.0

mA

c8SAMSUNG
• Electronics
II

KS54HCTLS
KS74HCTLS
Ta= -40·C to +85·C Ta= -55·C to +125·C Unit

Vee Vee -0.1
4.2
3.98
0

583

I

KS5~HCTLS190
KS74HCTLS

Synchronous 4-Bit Up/Down
Decade Counters

AC ELECTRICAL CHARACTERISTICS
Symbol Condltlons t

Characteristic

(Iflput t r • t~6 ns). HCTLSI190
KSS4HCTLS
KS74HCTLS
T.=2S II C
T.= _40DC to +8S DC T. = -55°C to +125 DC
Unit
Vee S.OV
Vee=S.OV:t10%
Vee=S.OV:t 10%

=

Typ

Maximum Clock Frequency

Guaranteed Limits

f max

30

20

16

14

Maximum Propagation Delay.
LOAD to any Q

~

30

40

50

60

tpHL

30

40

50

60

Maximum Propagation Delay,
A,B,C, 0 to any Q

tpLH
r---tpHL

27

36

45

64

27

36

45

54

Maximum Propagation Delay,
CLK to RCO

I TpLH
tpHL

Maximum Propagation Delay,
CLK to any Q

~
tpHL

CL=50pF

17

22

28

33

17

22

28

33

23

30

37

45

23

30

37

45

Maximum Propagation Delay,
CLK to MAXIMIN

~

35

47

59

70

tpHL

35

47

59

70

Maximum Propagation Delay,
DIU to RCO

tpLH
r---tpHL

33

45

56

67

33

45

56 '

67

Maximum Propagation Delay,
DIU to MAXIMIN

tpLH
r---tpHL

25

33

41

50

25

33

41

50

~

25

33

41

50

25

33

41

50

Mmcimum Propagation Delay.
CTEN to ReO

tpHL

13

17

21

25

LOAD low

13

17

21

25

Data before LOADt

10

13

17

20

CTEN before CLKt

20

26

34

40

10

.13

17

20

15

20

25

30

1

3

5

5

a
a

0

0

0

0

0

0

Minimum
Pulse Width

CLK High or Low

Minimum
Setup Time

DIU before CLKt

tv,

tsu

LOAD Inactive
before CLKt
Minimum Hold
Time

Data after LOADt
CTEN after CLKt

th

DIU after CLKt
Maximum Input capacitarice

CIN

5

POwer Dissipation Capacitance *

Cpo

80

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
. Electronics

MHz
ns
ns
ns
ns
ns

ns

ns
ns

os

ns
pF
pF

fin.

584

191

KS54HCTLS
KS74HCTLS

Synchronous 4-Bit Up/Down
Binary Counters

FEATURES

DESCRIPTION
These are high-speed synchronous, reversible 4-bit binary
counters. Synchronous counting operation is provided by
having all flip-flops clocked simultaneously SO that the outputs change with each other when so instructed by the
steering logic. This mode of operation eliminates the output counting spikes normally associated with a synchronous
(ripple clock) counters.

• Single down/up count control line
• Look-ahead circuitry enhances speed of cascaded
counters
• Fully synchronous in count modes
• Asynchronously presettable with load control
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The outputs of the four flip-flops are triggered on a low-tohigh-level transition of the clock input if the enable input
(CTEN) is low. A high at CTEN inhibits counting. The direction of the count is determined by the level of the down/up
(D/U) input. When D/U is low, the counter counts up and
when D/U is high, it counts down_
These counters feature a fully independent clock circuit.
Changes at the control inputs (CTEN and D/U) that will
modify the operating mode have no effect on the contents
of the counter until clocking occurs. The function of the
counter will be dictated solely by the condition meeting
the stable setup and hold times.

PIN CONFIGURATION

B

These counters are fully programmable; that is, the outputs may each be preset to either level by placing a low
on the load input and entering the desired data at the data
inputs. The output will change to agree with the data inputs independently of the level of the clock input. This
feature allows the counters to be used as modulo-N dividers
by simply modifying the count length with the preset inputs.

Vce

Qs

A

QA

ClK

Two outputs have been made available to perform the
cascading function: ripple clock and maximum/minimum
count. The latter output produces a high-level output pulse
with a duration approximately equal to one complete cycle
of the clock while the count is zero (all outputs low) counting
down or maximum (9 or 15) counting up. The ripple clock
output produces a low-level output pulse under those same
conditions but only while the clock output to the enable
input of the succeeding counter if parallel clocking is used,
or to the clock input if parallel enabling is used. The
maximum/minimum count output can be used to accomplish
look-ahead for high-speed operation.

Rro

CTEN

MAXIMIN

DIU
Qe

COA5

Qo

C

GND

0

FUNCTION TABLE
INPUTS

OPERATING MODE

parallel load
count up

OUTPUTS

LOAD

DID

CTEN

CLK

Input

l
l

X
X

X
X

X
X

l
H

H

On
l
H

L

I

t

X

count up

H

I

t

X

count down

-~

count down

These devices provide speeds and drive capability.
equivalent to their LSTIL counterparts and yet maintain
CMOS power leiJels. The input and output yoltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

.~

H

-~.--.-

hold (do nothing)

H

X

H

X

X

no change

ReO AND MAXIMIN FUNCTION TABLE
INPUTS

DIU
H
L
L
L
H
H

i CTEN
H
H
l
H
H
L

TERMINAL COUNT STATE
ClK

QA

08

X
X

H
H
H
l
L
L

X
X

U
X
X

U

!

!

I
I

X
L
L
L

I

I
I
I

i

OUTPUTS

Oc

00

IMAX/MIN!

.~

X
X

H
H
H
L
l
L

L
H

H
H

X
L
l
l

H =
l =
I =
X =

I
I

I

L
L
H

L

U

I

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

H
H

U

HIGH voltage level
LOW voltage level
LOW voltage level one setup time prior to the LOW-to-HIGH ClK transition
Don't care
t = lOW-lo-HIGH ClK IransitiOfl
u = one lOW level pulse
L = MAXIMIN goes lOW ON A lOW-to-HIGH ClK transition

=8SAMSUNG
Electronics

585

I

191

KS54HCTLS
KS74HCTLS

Synchronous 4~Bit Up/Down
Binary Counters

LOGIC DIAGRAM
(12)

(4)

CTEN

~M-~

(5)

DIU
ClK

MAX MIN

(14)

~

Ig
1

B

~ -~~
~

D

Lcr;- r-EL

ft) ..- ~iP 7L~
---l-~
r-....t

1

~

I
D

(9)

l

""

D

~tp
-

T
~~

---

C

~ r-EL

.--cP

)

'---

(13)

P
R->

I
I

1

Lc;- ~

~~
1
rL~
H

r-....t

-

""'-

I

I

J

~~;-c-fl
rL~
.....,.

~~ r::

L:D

I

J

J

Typical Load, Count, and Inhibit Sequence
lOAD~-----------------------------

DATA {:
INPUTS

:

ClK

DIU
CTEN

"""-----+----t-tl---' H
-113 1415

Ut--

0

1 2

COUNT UP

lOAD

c8SAMSUNGElectronics

2

I INHIBIT I

2 1

L -_ _ _ __

0 L 15 14 13

t- COUNT DOWN --I

Sequence:
(1) load (preset) to binary thirteen
(2) Count up to fourteen, fifteen, zero, one, and two
(3) Inhibit
(4) Count down to one, zero, fifteen, fourteen, and thirteen

KS54HCTLS
KS74HCTLS

191

Synchronous 4-Bit Up/Down
Binary Counters

Absolute Maximum Ratings*
Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 rnA
Continuous Current Through
Vee or GND pins
± 125 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
4.5V to 5.5V
Supply Voltage, Vee
OV to Vee
DC Input & Output Voltages *, VIN, VOUT
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to thes~ conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions.

(Vee==5V± 1 0% Unless Otherwise Specified)

j

Ta=25°C

t--- ---.-----

-~

KS74HCTLS

Typ

Minimum High-Level
Input Voltage

--------~---

--- -

Maximum Low-Level
Input Voltage
Minimum High-Level
Output Voltage

-+--~--

2.0
- -

0.8

VOH

I---------+--~--j__---

Vee Vee -0.1
4.2
3.98

o

0.1
0.26
0.39

I--------_+_---+---~----_+_-+__'_----t__----

Additional Worst
Case Supply
Current

Icc

VIN=Vee or GND

_ 10.tJ..~""'_~~_
per input pin
VI=2.4V
boice other Inputs:
at Vee or GND
10UT=OJAA

c8SAMSUNG
Electronics

Vee -0.1
3.84

----

8.0

-------+---

0.1
0.33
0.5

----

±1.0
--------- ----

80.0

t - - - - - - - - - - - - - - - - - f-----

0.8
- r----- -------.----

--1---- - - - - - ------

±0.1

V

2.0
----~---

0.8

-~--.----_+_--+__-~... -t_~---.--------

VIN = VIH or VIL
Maximum Low-Level
10=20JAA
VOL
Output Voltage
10=4mA
1-----________+-______ 10=8mA
Maximum Input
Current
Maximum Quiescent
Supply Current

- ---- ..

- - t - - - - - - - - 1---

VIN==VIH or VIL
10==-20JAA
10= -4mA

KS54HCTLS

Guaranteed Limits

2.0

f-..:.--------'=-----+---

.1

Ta= -40°C to +85°CITa = -55°C to +125°C Unit
.. - - - - - - - ------------.---

.----~--

Vee -0.1
3.7

V
.

-

---

V
-- --1------

0.1

J~~--~--,:~-:~~---~-=~

r--~-----~-~--

2.7

2.9

3.0

rnA

587

I

KS54HCTLS
KS74HCTLS
t -,

191

Synchronous 4-Bit Up/Down.
Binary Counters

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r , tf~6 ns). HCTLS191

KS74HCTLS
KSS4HCTLS
T.=2SOC
T.= -40°C to +8S oC T. = -55°C to +12SoC
Symbol Conditions t Vee=S.OV
Vee = S.OV ± 10%
Vee=S.OV± 10%
Guaranteed Limits

TY9

Maximum Clock Frequency

f max

30

20

16

14

Maximum Propagation Delay,
lOAD to any Q

-

tPLH

30

40

50

60

tpHL

30

40

50

60

Maximum Propagation Delay,
A,B,C, 0 to any Q

-

27

36

45

64

27

36

45

54

Maximum Propagation Delay,
ClK to RCO

TpLH
-tpHL

17

22

28

33

17

22

28

33

Maximum Propagation Delay,
ClK to any Q

~

23

30

·37

45

tpHL

23

30

37

45

tPLH

35

47

59

70

tpHL

35

47

59

70

tpLH

33

45

56

67

tPHL

33

45

56

67

tpLH

25

33

41

50

tpHL

25

33

41

50

tpLH'
tpHL

Maximum Propagation Delay,
ClK to MAXIMIN

'--

Maximum Propagation Delay,
DID to RCO

f----------

Maximum Propagation Delay,
DID to MAXIMIN

~

Maximum Propagation Delay,
CTEN to RCO

~
tPHL

CL=50pF

25

33

41

50

25

33

41

50

13

17

21

25

13

17

21

25
20

Minimum
Pulse Width

ClK High or low
Data before lOADt

10

13

17

Minimum
Setup Time

CTEN before ClKt

20

26

34

40

10

13

17

20

15

20

25

30

lOAD low

DIU before ClKt

tw

!so

lOAD Inactive
before ClKt
Minimum Hold
Time

Data after lOADt
CTEN after ClKt

th

DIU after ClKt

1

3

5

5

0

0

0

-0

0

0

0

0

Maximum Input Capacitance

G,N

5

Power Dissipation Capacitance *

Gpo

80

* Cpo determines the no-load dynam •.:: power dissipation: PD=GpO VCC 2
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

Unit

MHz
ns
ns
-,-

ns
ns
ns

ns

ns
ns

os

ns
pF
pF

fin.

588

KS54HCTLS
KS74HCTLS

192

Synchronous 4-Bit Up/Down
Decade Counters with Dual Clock

FEATURES

DESCRIPTION

• Look-ahead circuit enhances cascaded counters
• Fully synchronous in count modes
• Parallel asynchronous load for modulo-N count
lengths
• Asynchronous clear
• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to S.SV
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & ~eel), standard DIPs.

These are high·speed synchronous reversible 4-bit decade
counters. Synchronous operation is provided by having all
flip· flops clocked simultaneously so that the outputs c}1ange
coinCidently with each other when so instructed by the
steering togic. This mode of operation eliminates the out·
put counting--spikes normally associated with asynchronous
(ripple clock) counters.
The outputs of the four flip-flops are triggered by a low-tohigh-level transition of either count (clock) input (Up or
Down). The direction of counting is determined by which
count input is pulsed while the other count input is high.
All four counters are fully programmable; that is, each output may be preset to either level by plaCing a Iowan the
load input and entering the desired data at the data inputs.
The output will change to agree with the data inputs independently of the count pulses. This feature allows the
counters to be used as modulo-N dividers by Simply modifying the count length with the preset inputs.
A clear input has been provided that forces all outputs to
the low level when a high level is applied. The .clear function is independent of the count and the load inputs.

PIN CONFIGURATION

B

Vee

Os
OA

CLR

DOWN

UP
Oe
OD
GND

A

BO
CO
LOAD

C
D

These counters were designed to be cascaded without the
need for external circuitry. The borrow output (BO)
produces a lOW-level pulse while the count is zero (all outputs low) and the count-down input is low. Similarly, the
carry output (CO) produces a lOW-level pulse while the
count is maximum (9 or 15) and the count-up input is low.
The counters can then be easily cascaded by feeding the
borrow and carry outputs to the count-down and countlip inputs, respectively, of the succeeding counter.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
statiC discharge by internal diode clamps to Vee and
ground.

:8SAMSUNG
Electronics

589

I

192

KS54HCTLS
KS74HCTLS

Synchronous 4-Bit Up/Down
Decade Counters with Dual Clock

LOGIC D1AGRAM
(12)

Co

Typical load, count, and Inhibit sequences

'{OADA~f=t =
,

I

I

"_

I

'r-

om o-I-::t=
rNPUTS.

c~L_

, o----+-f :

I

Sequence;
(1) Load (preset) to BCD seven.
(2) Count up to eight, mine(maximum)
zero, one, and two.
(3) Inhibit
(4) Count down to one, zero
(minimum), nine, egiht,
and seven

NOTE A: Clear overrides load data, and count inputs.
Note B:When count up, count-down input must be high;

M::t~======:===~===~n--,u~======
l ' i~:ou"' U:---+"HIBIT'-i ' I-----cOU",OOWN----j

when counting down, countup intput must be high.

~

=8 !!'ror!"SUNG

590

KS54HCTLS
KS74HCTLS

192

Synchronous 4-Bit Up/Down
Decade Counters with Dual Clock

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vcc, '" .... -0.5V to + 7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vcc +0.5V) . . .
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND. pins . . .
± 1 25 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vcc . . .
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf

* Absolute Maximum Ratings are. those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vce=5V± 10% Unless Otherwise Specified)

Ta=25°C
Typ

Minimum High-Level
Input Voltage

VIH

Maximum Low-Level
Input Voltage

VIL

Minimum High-Level
Outpvt Voltage

VOH

VIN=VIH or VIL
lo=-20/JA
lo=-4mA

Maximum Lo.w-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/J A
lo=4mA
10=8mA

Maximum Input
Current

liN

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

per input in
VI=2.4V
~Icc other Inputs:
at Vce or GND
10uT=0/JA

KS74HCTLS
KS54HCTLS
Ta=-400Cto +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

2.0

2.0

2.0

V

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=Vec or GND

±0.1

±l.b

±1.0

/J A

VIN=VCC or GND
louT=O/JA

8.0

80.0

160.0

/J A

2.7

2.9

3.0

mA

-

cRSAMSUNG
• • Electronics

Vcc Vee -0.1
4.2
3.98
0

591

I

KS54HCTLS~r192
KS74HCTLS

Synchronous 4-Sit"UpIDoJIIln
Decade Counters with Dual Clock

AC ELECTRICAL CHARACTERISTICS

(Input tr , tf~6 ns), HCTLS 192

KS54HCTLS
KS74HCTLS
T.=25°C T '= -400C to +8S o C T = -55°C to +125°C
Unit
Symbol Condltlonst V =5.0V •
• Vcc=5.0V~ 10%
cc
Vcc=5.0V~10%

Characteristic

Typ

Maxim~

Propagation Delay,

. UP to CO
Maximum Propagation Delay,
DOWN to BO
Maximum Propagation Delay,
UP or DOWN to any

a

Guaranteed Limits

fmax

35

25

20

18

tpLH
r--tPHL

18

25

31

37

18

25

31

37

18
tpLH
r--tpHL CL=50pF 18

24

30

36

24

30

36

Maximum Clock Frequency

I

TpLH
tpHL

32

42

52

63

32

42

52

63

MHz
ns
ns
ns

Maximum Propagation Delay,
LOAD to any

~

30

40

50

60

tpHL

30

40

50

60

Maximum Propagation Delay,
CLR to any

tPHL

18

24

30

36

10

13

17

20

tw

10

13

17

20

10

13

17

20

Data before LOADt

10

13

17

20

CLR Inactive before
uPt or DOWNt

10

13

17

20

ns

20

ns·

a

a

CLR High
Minimum Pulse LOAD Low
Width
UP or DOWN High
or Low

Minimum Setup LOAD Inactive before
Width
uPt or DOWNt

10

13

17

UP high before
DOWNt

10

13

17

20

DOWN high before uPt

10

13

17

20

1
C

3

5

5

0

0

0

0

0

0

0

Minimum Hold
Time

tsu

Data after LOADt
UP High after DOWNt

th

DOWN High after uPt
Maximum Input Capacitance
Power Dissipation Capacitance"

. CIN

5

Cpo

80

ns
ns

ns

....

--

ns
.-

pF

1----.-

pF

.. Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fjn.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronic~

592

KS54HCTLS
KS74HCTLS

193

Synchronous 4-Bit Up/Down
Binary Counters with Dual Clock

FEATURES

DESCRIPTION

• Look-ahead circuitry enhances cascaded counters
• Fully synchronous in count modes
• Parallel asynchronous load for modulo-N count
lengths
• Asynchronous clear
• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These are high-speed synchronous reversible 4-bit binary
counters. Synchronous operation is provided by having all
flip-flops clocked simultaneously so that the outputs change
coinCidently with each other when so instructed by the
steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous
(ripple clock) counters.
The outputs of the four flip-flops are triggered by a low-tohigh-level transition of either count (clock) input (Up or
Down). The direction of counting is determined by which
count input is pulsed while the other count input is high.
All four counters are fully programmable; that is, each output may be preset to either level by placing a Iowan the
load input and entering the desired data at the data inputs.
The output will change to agree with the data inputs independently of the count pulses. This feature allows the
counters to be used as modulo-N dividers by Simply modifying the count length with the preset inputs.
A clear input has been provided that forces all outputs to
the low level when a high level is applied. The clear function is independent of the count and the load inputs.

PIN CONFIGURATION

B

These counters were designed to be cascaded without the
need for external circuitry. The borrow output (80)
produces a low-level pulse while the count is zero (all outputs low) and the count-down input is low. Similarly, the
carry output (CO) produces a lOW-level pulse while the
count is maximum (9 or 15) and the count-up input is low.
The counters can then be easily cascaded by feeding the
borrow and carry outputs to the count-down and countup inputs, respectively, of the succeeding counter.

Vee

Os

A

OA

CLR

SO
CO
LOAD

DOWN
UP

Oe
OD

C

GND

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

D

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

OUTPUTS

INPUTS

OPERATING MODE
CLR

LOAD

UP

DOWN

A

8

C

D

QA

Qs

Qc

QD

CO

80

reset (clear)

H
H

X
X

X
X

L
H

X
X

X
X

X

X

X
X

L
L

L
L

L
L

L
L

H
H

L
H

parailel load

L
L
L
L

L
L
L
L

X
X

L
H

L
H

X
X

L
L
H
H

L
L
H
H

L
L
H
H

L
L
H
H

L
L
H
H

L
L
H
H

L
L
H
H

L
L
H
H

H
H
L
H

L
H
H
H

X

count up

L

H

t

H

X

X

X

count down

L

H

H

t

X

X

X

H = HIGH voltage level
L= LOW voltage love I
X= don't care

H*

H

H

H* *

t= LOW-to-HIGH clock transition
* CO = UP at terminal count up (HHHH)
* * aO = DOWN at terminal count down (LLLL)

c8·sAMSUNG
Electronics

count up
COUAt down

593

I

SynchronoUs: 4-Sit up/Down
Counters with Dua1- Clock

Sina~y
LOGIC DIAGRAM

~
(13)

CLR (~

~)

(5)

UP

(4)

DOWN

U5Ao

'1illct>

A

lU

-

(15)

~

.~

:t.>~~ o.

HI>

FU

r:

,- -

FU

~

~

I

1'- .

FU

-

~

y

n

~~
""

~

(9)

~~
"'"

~

(10)

o

~ ~

l~

~

~

(1)

B

c

~

-~~~~
- ~ rL.~

_

9

LeI>,

a.

Oc

00

"

CO

T,yplcal Clear, Load, and Count Sequences
CUI

L'OAO ---li-+-...,

r---------------

r++--+--- - - - - - - - - - - - - - - - - - - -

COUNT _

++-+-+-..,

UP

c~:--~~~~-------4-~

OO--~-++-4---..., r--~~------~

....--

('tClMroutpuillo lIfO.

12,LOod_'"
--._.
up towteen ......... ceny.

_....... . ----.. . . ---.-.. -1:.--.
NIO. one, ....
_A:~ ______
. two.

10 1

~31

,---....~

I

I I 1 0 15 14 131
r-- COUNT UP --1 t-- COUNT DOWN ---1
14

15

0

CLEAR PREseT

=8SAMSUNG
Electronics

1

2

131 Count
10
(41 Count down 10

one, zero. ttortow, MMn......... 1M 1I*teIn.

594

193

KS54HCTLS
KS74HCTLS

Synchronous 4-Bit Up/Down
Binary Counters with Dual Clock

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, ilK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current ThrolJgh
Vee or GND pins
± 125 mA
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt. .
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
..... Max 500 ns
Input Rise & Fall Times, tr , tf

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4·

V

±0.1

±1.0

±1.0

J.(A

8.0

80.0

160.0

JAA

2.7

2.9

3.0

mA

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20J.(A
10=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20J.(A
lo=4mA
lo=8mA

Maximum Input
Current

liN

VIN=Vec or GND

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

~Icc

VIN=Vce or GND
10uT=0J.(A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
IOUT=O/AA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

I

595

I

:·+l93
KS74HCTLS

Synchronous 4-Bit Up/Down
Binary Counters with Dual Clock

AC ELECTRICAL CHARACTERISTICS

(Input tr , tf~6 ns), HCTLS193

KS54HCT~S

Characteristic

Symbol Condltions t

T.=250~
Vcc=5.0

KS54HCTLS
KS74HCTLS '
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%

Typ

Guaranteed Limits

f max

35

25

20

18

Maximum Propagation Delay,
UP to Co

tpLH
r----tpHL

18

25

31

37

18

25

31

37

Maximum Propagation Delay,
DOWN to 80

~

Maximum' Propagation Delay,
UP or DOWN to any Q

r----------

Maximum Propagation Delay,
LOAD to any Q

f---

Maximum Propagation Delay,
CLR to any Q

Maximum Clock Frequency

MHz
ns

18

24

30

36

24

30

36

TpLH

CL=50pF 18
32,

42

52

63

tpHL

32

42

52

63

tpLH

30

40

50

60

tpHL

30

40

50

60

tpHL

18

24

30

36

10

13

17

20

10

13

17

20

10

13

17

20

Data before L.OADt

10

13

17

20

CLR Inactive before
uPt or DOWNt

10

13

17

20

ns

10

13

17

20

ns

UP high before
DOWNt

10

13

17

20

DOWN high before uPt

10

13

17

20

Minimum Hold. Data after LOADt
Time
UP High after DOWNt

1

3

5

5

0

0

0

0

0

0

0

0

tpHL

CLR High
Minimum Pulse LOAD Low
Width
UP or DOWN High
or Low

Minimum Setup LOAD Inactive before
Width
uPt or DOWNt

tw

tsu

th

ns
ns
ns
ns

ns

ns
-~

DOWN High after uPt
Maximum Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

80

pF

* CPD determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

596

KS54HCTLS
KS74HCTLS

194

4-Bit Bidirectional
Universal·Shift Registers

FEATURES

DESCRIPTION

•
•
•
•
•
•

These bidirectional shift registers feature parallel outputs,
right-shift and left· shift serial inputs, operating-mode·control
inputs, and a direct overriding clear line. The register has
four distinct modes of operation:

•
•
•
•
•

•

Parallel-to-Serial, Serial-to-Parallel Conversions
Left or Right Shifts
Parallel Synchronous Loading
Direct Overriding Clear
Temporary Data Latching Capability
Function, pin-out, speed and drive compatibility with
54174LS logic family
Low power consumption characteristic of CMOS
High-Drive-Current outputs:
.
IOl =8 mA @ VOL =0.5V
Inputs and outputs interface directly with TTL, N.MOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

-

Synchronous parallel loading is accomplished by applying
the four bits of data and taking both mode control inputs,
SO and S1, high. The data is loaded into the associated
flip-flops and appear at the outputs after the positive transition of the clock input. During loading, serial data flow
is inhibited.
Shift-right is accomplished synchronously with the rising
edge of the clock pulse when SO is high and S 1 is low.
Serial data for this mode is entered at the shift-right data
input. When SO is low and S1 is high, data shifts left synchronously and new data is entered at the shift-left serial
inputs. Clocking of the flip-flop is inhibited when both mode
control inputs are low.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

ClR
SR SER
A

Vee

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

OA
Os

B

Oe

C
D

00

Inhibit clock (temporary data latch/do nothing)
Shift·right (in the direction OA toward OD)
Shift-left (in the direction OD toward QAI
Parallel (broadside) load

qLK
51

SO

FUNCTION TABLE
INPUTS
CLR

MODE

L
H
H
H

H
H
H
H

X
X
H
L
L
H
H
L

SERIAL

PARALLEL

LEFT RIGHT

A B C D

CLK

S1 SO

X

X

X
H
H
H
L
L
L

L

t
t
t
t
t
X

OUTPUTS

X
X
X
X
X
H
L
X

=8SAMSUNG
Electronics

X
X
X
H
L
X

X
X

X X X X
X X X X
a
X
X
X

b c

d

X X X
X X X
X X X
X X X X
X X X X

QA

QB

Qc

QD

L
OAO
a
H
L
OSn
OSn
OAO

L
OSO
b
OAn
OAn
OCn
OCn
OSO

L
OCO
c
OSn
OSn
ODn
ODn
OCO

L
ODD
d
OCn
OCn
H
L
ODD

H=high level (steady state)
L = low level (steady state)
X=irrelevant (any input, including transitions)
t = transition from low to high level
a,b,c,d=the level of steady-state input at
inputs, A,B,C, or D, respectively.
OAO, OSO, OCO, ODo=the level of OA,
Os, Qc, or OD, respectively, before
the indicated steady-state input conditions were established.
OAn, OSn, OCn, OOn=the level of OA,
Os, Oc, respectively, before the mostrecent t transition of the clock.

597

I

KS54HCTLS
KS74HCTLS

1,94

4~Bit Bidirectional

Universal Shift Registers

LOGIC DIAGRAM
(positive logic)
PARALLEL IN~UTS

MODE {
CONTROL
INPUTS

SI

so -,,9"'-l1><>~--+--HH+----ff----t---t-t-rl-~+----+--t+~-rl----+---tlh+----,
SHIFT

SHIFT
.--I1-H-_--l....!:(7:..!.) LEFT
SERIAL
INPUT

S~~': ...:(~2)'--_ _ _ _d
INPUT

CLK~(~lf~)~~------~~---~------~----+--__-~____

r-____~

CDA~(~I)~~_ _ _ _ _ _ _ _- 4_ _ _ _ _~~_ _ _~_____~~_ _ _ _~____-+~

______~
(12)

a,

Q,

ac

aD

PARALLEL OUTPUTS

typical clear, load, right-shift, inhibit, and clear sequences

MODE
CONTROL
INPUTS

SERIAL {
DATA
INPUTS

PARALLEL {

DATA
INPUTS

I
I
I

SI

:::r-'lL..-;-'_______~

R

L_...,...-io-_"'-_ _ _ _ _ _ _-"-......,,.....

:_~ .;. .; ~. :_. :. . .

_ _ _ _ _. . ; - . , . . . _ - - - - - - - - - - ' - -

:

Cn--..:.-----.....;.---:--i--------:--------:-OIL I

I I

I----

CLEAR LOAD

cRSAMSUNG
• ., Electronics

_

SHIFT RIGHT---\

~SHIFT LEFT---t----INHIBIT---I
CLEAR

598

I~

KS54HCTLS
KS74HCTLS

194

4-Bit Bidirectional
Universal Shift Registers

Absolute Maximum Ratings*
Supply Voltage Range Vcc,
-O.5V to + 7V
DC Input Diode Current, hK
(VI < -O.5V or VI > Vcc +O.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -O.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

* Absolute Maximum R·atings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V±10% Unless Otherwise Specified)

Ta=25°C

Test Oonditions

Guaranteed limits

Typ
Minimum High-Level
Input Voltage

VIH

Maximum Low-Level
Input Voltage

VIL

0.8

0.'8

V

Vcc -0.1
3.84

Vcc -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±O.1

±1.0'

±1.0

/lA

160.0

/lA

3.0

mA

0.8

VOH

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O /lA
lo=4mA
10=8mA

Maximum Input
Current

liN

VIN=VCC or GND

Maximum Quiescent
Supply Current

Icc

r---.

Vcc Vcc -0.1
4.2
3.98
0

--t--o

- - - - -

VIN=VCC or GND
louT=O/lA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
louT=O/lA
~_.-

Worst

Supply
Current

V

2.0
- - r-----

VIN=VIH or VIL
10=-20/lA
10=-4mA

lease

2.0

2.0

Minimum High-Level
Output Voltage

I Additional

KS54HCTlS
KS74HCTlS
Ta = -40°C to +85°C Ta = - 55°C to +125°_~ Unit

.6.lcc

.-~----------

cRSAMSUNG
• • Electronics

8.0
.....

-

80.0
...

-~------.--

2.7

2.9

599

I

KS54HCTLS
KS74HCTLS

1't:l4
a

4-Bit Bidirectional
Universal Shift Registers

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions 1

(Input tr ,

Ta =25°C
Vcc=5.0V

tf~6 ns), HCTlS194
KS74HCTLS
T. == -40°C to + 85°C
Vcc=5.0V:10%

Typ

Maximum Clock Frequency
Maximum Propagation Delay,
ClK to QH
Maximum Propagation Delay,
ClR to QH
Minimum
Pulse Width

I ClR
I ClK

f max
tpLH
r--tpHL
CL=50pF
tpHL

to low

tw

High or low

Minimum Setup Time,
Any Input before ClKt

ts

KS54HCTLS
Ta= -55°C to +125°C
Vcc=5.0V: 10%

Unit

Guaranteed limits

40 30

25

20

18 24

30

36

MHz

18 24

30

36

21 28

35

42

12 16

20

24

12 16

20

24

10 17

20

20

ns

0

0

ns

ns
ns
ns

-~~

Minimum Hold Time,
Data after ClKt

ts

0

,0
--~

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

5

pF
pF

* Cpo determines the no-load dynamic power dissipation: PD=CPD VCC 2 fin,
t For AC switching test circuits and timing waveforms see section 2.

-c8SAMSUNG
'.

Electronics

600

KS54HCTLS
KS74HCTLS

195

4-Bit Bidirectional
Universal Shift Registers

FEATURES

DESCRIPTION

• Para"el-tOoSerial, Serial-tOoPara"el Conversions
• Parallel Synchronous Loading
• J and K Inputs to First Stage
• Right-shift Only with Complementary Outputs on Last
Stage
• Direct Overriding Clear
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and·
military temperature ranges:
KS74HCTlS: -40°C to +85°C
KS54HCTlS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 4-bit registers feature parallel inputs, parallel outputs.
J-K serial inputs, shift/load control input, and a direct overriding clear. The registers have two modes of operation:
Parallel (broadside) load
Shift (in the direction AA toward OD)
Parallel loading is accomplished by applying the four bits
of data and taking the shift/load control input low. The data
is loaded into the associate flip-flops and appears at the
outputs after the positive transition of the clock input. During
loading serial data flow is inhibited.
Shifting is accomplished synchronously when the shift/load
control input is high. SEl,J)al data for this mode is entered
at the J-K inputs. These inputs permit the first stage to perform as a J-R, 0-, or T-type flip-flop as shown in the function table.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.
CLR

Vee

J

Q.

K

QB

A

Qc

B
C
D

Qo
Co

I

CLK

GND

SH/[5

FUNCTION TABLE

----

CLR

SHIFT/LOAD

INPUTS

L

X

X

L
H
H

t
L
t
t
t
t

H
H
H

H

H
H

PARALLEL
1-------

I--~----

=8SAMSUNG
Electronics

~--.~-

SERIAL
CLK

H
H
H

OUTPOUTS
.~

J

K

X
X
X

X
X
X
H

L
L
H
H

L
H

L

OA

08 Oc

ABC D
X
a
X
X
X
X
X

X
b
X
X
X
X
X

X
c
X
X
X
X
X

X
d
X
X
X
X
X

L
L
L
a
b
c
OAO OBO OCO
OAO OAO OBn
L OAn OBn
H OAn OBn
QAn OAn OBn

00 00
L

H

d

d

000 000

Oen
OCn
Oen
Ocn

aCn
aCn
CCn
aCn

H=high level (steady state)
L=low level (steady state)
X=irrelevant (any input, including transitions)
t = transition from low to high level
a,b;c.d=the level of steady-state input at
A,B,C. or 0, respectively.
OAO. OBO. OCO. Ooo=the level of OA.
OB. Oc. or OD, respectively, before
the indicated steady-state input conditions were established.
OAn, OBn, OCn=the level of OA, OB or Oc.
respectively. before the mostrecent
transition of the clock.

601

4-81t Bidirectional
Universal Shift Registers
LOGIC DIAGRAM
SERIAL INPUT

PARALLEL INPUTS

~

J
(2)

K
(3)

C

B

A

D

(6)

(5)

(4)

(7)

SHIFTI
LOAD (~9~) ~~-+--+-~~------~~----------~r---------~
CONTROL

ClK

(10)

ClA~(~l)----~~--~-+--+---~--~+--+--~r-~-r--r---~--ri--i---1

(11)

~---------------y---------------------~

PARALLEL OUTPUTS

typical clear, shift, and load sequences

CLK

,
,
J

SERIAL {

-~---'~

~L-----------":"'--7----------

INPUTS
K
SHIFT/LOAD

-------------------,l..:.......Jr....;.---------

PARALLEL

IN~~~~

i

A _ _ _ _ _ _....;._ _ _ _ _ _ _ _ _ _ _ _ _~~--------------B

L

:

FHT'L---:-----------

C
D

L

( O':::l

I

~-------

OR : ; : .,
...
~ ------;.'----"

OUTPUTS

~---------~
{ Oc:::.,
Oo:::.,...__________________
I

I
CLEAR

c8SAMSUNOElectronics

~

·~---SERIAL SHIFT

1-01

,

----1

I'----SERIAL SHIFT - -

LOAD

602

KS54HCTLS
KS74HCTLS

195

4-Bit Bidirectional
Universal Shift Registers

Absolute Maximum Ratings·
Supply Voltage Range Vcc.
-0.5V to +7V
DC Input Diode Current. 11K
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package. Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vcc
4.5V to 5.5V
DC Input & Output Voltages·. VIN. VOUT
OV to Vce
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C~ +125°C
Input Rise & Fall Times. tr • tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V±10% Unless Otherwise Specified)
KS74HCTLS
KS54HCTLS
Ta =-40°Cto +85°C Ta =-55°Cto +125°C Unit

Ta=25°C

Symbol Test Conditions

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vcc -0.1
3.84

Vcc -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

I-/A

80.0

160.0

I-/A

Minimum High-Level
Outp.ut Voltage

VOH

VIN=VIH or VIL
10=-20I-/A
10= -4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
.10= 2OI-/A
10=4mA
10=8mA

Maximum Input
Current

liN

VIN=Vec or GND

Maximum Quiescent
Supply Current

Icc
-

Additional Worst
Case Supply
Current

~Icc

VIN=VCC or GND
10UT=01-/A
....
per input pin
VI=2.4V
other Inputs:
at Vce or GND
IOUT-OI-/A
--

c8SAMSUNG
Electronics

-

Vcc Vcc -0.1
4.2
3.98
0

8.0
---

-.

-

2.7

-

---

-.

2.9

3.0

mA

603

I

KS54HCTLS
KS74HCTLS

195

4-Bit Bidirectional
Universal Shift Registers

AC ELECTRICAL CHARACTERISTICS
Symbol Conditions t

Characteristic

(Input t r , tf~6 ns), HCTLS195 .

KS74HCTLS
Ta=25°C
Ta= -40°C to +85°C
Vcc=5.0V
Vcc=5.0V:t10%
Typ

Maximum Clock Frequency
Maximum Propagation Delay,
CLK to QH

-

Maximum Propagation Delay,
CLR to QH
Maximum
Pulse Width

CLR Low
CLK High or Low

Minimum
Setup Time
before CLKt

SH/LD High

Minimum
Hold Time
after CLKt

Serial or Parallel

SH/LD High

Unit

Guaranteed Limits

f max

50 30

25

20

MHz

tpLH

18 24

30

36

ns

18 24

30

36

ns

21

35

42

ns

10 12

15

20

12 16

20

24

15 20

25

25

12 15

20

24

15 20

25

25

tpHL
tpHL
tw

tsu

CLR inactive

Serial or Parallel
Data

KS54HCTLS
Ta= -55°C to +125°C
Vcc=5.0V:t 10%

CL=50pF

th

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

-

28

0

0

0

0

0

0

5

ns

ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2. I

c8SAMSUNG
Electronics

604

KS54HCTLS
KS74HCTLS

210

Octal Buffers and Line Drivers
with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =24mA @ VOL .. O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "smlill outline" packages
(Available Tape & Reel), standard DIPs.

These high-speed octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and
bus-oriented receivers and transmitters.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direcfinterface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION

LOGIC DIAGRAM

1<3

Vee

lAl

2G

2)14

lVl

lA2

2A4

2V3

lV2

lA3

2A3

2V2

1Y3

lA4

2A2

2Yl

1Y4

GND

2Al

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vec and
ground.

(18)
(16)

{'h
_

lY2

I

(14) "V3
(12)

_
lY4

2G
(9)

2Al
(7)

2A2
(5)

2A3
(3)

2Yl
2Y2
2~3

2Y4

FUNCTION TABLE
Input

G
L
L
H

A
L

Output

Y

H

H
L

X

Z

c8SAMSUNG
Electronics

605

Octal Buffers 'and Line Drivers
~ith 3-State Outputs

KS54HCTLS210
KS74HCTLS .......
,1

.

Absolute Maximum Ratings·
Supply Voltage Range Vee, . .
-0.5V to + 7V
DC Input Diode Current, 11K
(VI <-0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu"rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vec or GND pins
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°·C
Power Dissipation Per Package, Pdt
500 mW

t power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vec
Operating Temperature
-Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +1'25°C
Max 500 ns
Input Rise & Fall Times, tr , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logiC
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vce=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ
Minimum High-Level
Input Voltage
Maximum Low-Level
Input Voltage

Guaranteed Limits
2.0

VIH

KS74HCTlS
KS54HCTlS
Unit
Ta = -40°C to +85°C
Ta = -55°C to +125°C
. --

2.0

2.0
._-

0.8

VIL

0.8

0.8
--~

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20/iA
lo=-6mA

Maximum Low-Level
Output Voltage

VOL

VIN = VIH or VIL
10= 2O/iA
lo=12.mA
10=24mA

Vce Vee -0.1
4.2
3.98
0

V

--~~~----~-.-

V

..

f---

Vee -0.1
3.84

Vee -0.1
3.7

0.1 I
0.26
0.39

0.1
0.33
0.5

0.1
0.4

----

_- J.----

- - ------------

V

V
~~

Maximum Input
Current

liN

VIN=Vce or GND

±0.1

±1.0

±1.0

/i A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VOUT=VCC or GND

±0.5

±5.0

±10.0

JAA

Maximum Quiescent
Supply Current

lee

VIN=Vce or GND
10ur=OJiA

8.0

80.0

160.0

/i A

=8SAMSUNG
Electronics

606

I"

KS54HCTLS
KS74HCTLS

210

Octal Buffers and Line Drivers
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input t r , tf~6 ns), HCTLS210
KS74HCTLS

KS54HCTLS

Vcc=5.0V:!:10%

Vcc=5.0V:!: 10%

T.=25~C T.=-400Cto +850C T.=-550Cto +125 0C
Vcc=S.OV
Typ

Maximum Propagation Delay,
A toY

fMax;mum OutpuLEnable

tpLH

13 18
16 21

22
27

27
33

tpHL

CL=50pF
CL=150pF

13 18
16 21

22
27

27
33

17 23
CL=50pF
CL=150pF 20 26

29
34

34
40

17 23
CL=50pF
CL =150pF 20 26

29
34

34
40

tPZH

Time, Enable to Y

RL=1kO

tPZL
Maximum Output Disable
Time, Enable to Y
Maximum Input Capacitance

Guaranteed Limits

CL=50pF
CL=150pF

~

tpHZ
- - RL =1 kO
tpLZ CL =50pF

Unit

16 21

26

32

16 21

26

32

-------

ns

ns

ns

5

pF

Maximum Output Capacitance COUT Output Disabled

10

pF

Output Disabled
Output Enabled

5
30

pF

Power Dissipation
Capacitance· (per stage)

CIN

Cpo

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fin.
t For AC switching test circuits and timing waveforms see section 2.

I

c5CSAMSUNG
• • Electronics

607

KS54HCTLS'~.9B

KS74HCTLS'

3-Line to 8-Llne DecoderslDomultiplexers

..

FEATURES

DESCRIPTION

• Designed specifically for high~speed memory
decoders and data transmission systems
• Incorporates 2 enable inputs to simplify cascading
and/or data reception
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOl =8 mA@ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +8,5°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices are designed to be used in highperformance memory-decoding or data-routing applications
requiring very short propagation delay times. In highperformance memory systems, these decoders can be
used with high-speed memories utilizing a fast enable
circuit. The delay times of these decoders and the enable
time of the memory are usually less than the typical access
time of the memory. This means that the effective system
delay introduced by the decoder is negligible.
The conditions at the binary select inputs and the three
enable inputs select one of eight input lines. Two activelow and one active-high enable inputs reduce the need for
external gates or inverters when 'expanding.
A 24-line decoder can be implemented without external
inverters and a 31 -line decoder requires only one inverter.
An enable input can be used as a data input for
demultiplexing applications.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

FUNCTION TABLE
Enable
Inputs

I

Select

I

Outputs

A

Vee

8

YO

C

Yl

G1

G2*

C B A

YO Y1 Y2 Y3 Y4 Y5 Y6 Y7

G2A

Y2

G2B

X

Y3

L

H
X

X X X
X X X

L
L

H
H
H
H
H
H
H
H

L
L
L
L
L
L
L
L

L L L
L L H
L H L
H L L
H L L
H L H
H H L

Gl

Y4

Y7

Y5

GND

Y6

....

_- Inputs

~~~~

H H H

.-.--~-----

H

L
L
L

L
L
L
L
L
L
L

L
L
L
L
L
L

H

L
L
L
L

--

--

-

H

L
L
L
L
L

L
L
L
L
L

H

L
L
L
L
L
L

L
L
L
L

H

L
L
L
L
L
L
L

L
L
L

L
L

H

L
L
L
L
L
L
L
L

H

L
L
L
L
L
L
L
L
L

L

H

--

*(32=G2A+G28

c8SAMSUNG
Electronics

608

KS54HCTLS
KS74HCTLS

238

3-Line 8-Line /Jecot/ers/Demultiplexers

LOGIC DIAGRAM

Absolute Maximum Ratings·
Supply Voltage Range Vcc, ., .
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI> Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt . .
500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

·qsSAMSUNG
III

Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS.74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise.& Fall Times, t r , t#
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

609

I

KS54HCTLS
KS74HCTLS

238

3-Line 8-Line DeCOClerslDemultiplexers

DC ELECTRICAL CHARACTERISTICS

(Vcc=5V± 1 0% Unless Otherwise Specified)

Characteristic
Minimum High-Level
Input Voltage

V
IH

2.0

2.0

2.0

v

0.8

0.8

0.8

V

f-------.--t-----.

Maximum Low-Level
V,L
I~~!_~ol~a.g~___._ ... f------.
Minimum High-Level
Output Voltage

1 - - - - .... - - ..- - f - - - - . .

VOH

Maximum Low-Level
Output Voltage

V,N=V,H or V,L
10=-20/AA

VOL

Vee -0.1
3.84

Vce Vee -0.1

10= -4mA_~~1---3-.~~V,N=V,H or V,L
10=20/AA
0
0.1
10=4mA
0.26

_ _ I -___

1 - - - - - - - - - .. - - - - -

..~-.--

l----

~2..~.~~_A~___ ~__+--O. 39__ e---.

'---. -- 1 - - - - .

t>lec

per input pin
Vz=2.4V
Other Inputs:
At Vee or GND
10=0

AC ELECTRICAL CHARACTERISTICS

160.0
-------

/AA

- - - - _ . _ - - - - - - - - - - - -----

3.0

mA

(Input tr , tl<::;6 nsl, HCTLS238

Unit

22 30

tpLH

Maximum Propagation Delay,

tpHL

- - - - - - - - - - - - - - - - - . - . - -.. ----.---.-l----~

I-~
tpHL

---f---.---t--------

l--~axi~_um_'~p_u_t_C_~_~i!ance
Power Dissipation CapaCitance *

45

37

45

24 32
24 32

40
40

~-- •..

. ----- ----.- -.---------- .

___ .\--___ . 4~ ______ _
48

I---.\------jf---.. - - - - - . - - - - - - I - - - - - . ---.---. -. --.

~+_~
18 25

ns

- - - - . - ._-----------

I----~- ----I--~--.-----------

~l:':I.._ CL=50pF

Maximum Propagation Delay,
G1to any Y

37

22 30

--\----

1-----

A, B, C or any Y
tpHL
. . _---_._-----------_._---+---

Maximum Propagation Delay,
G2A or G2B to any Y

I1A
_._---

Symbol

Characteristic

1------

---_.-

±1.0

2.9

2.7

V
.

Maximum Input
Current
--------.---- --.

Additional Worst
Case Supply
Current

V
----

0.1
0.4

0.1
0.33
0.5

±1.0
±0.1
-- - e---.... . --,-1--- -.--.-- - - -'--I----- ------..-1----.----.---Maximum Quiescent
I
VIN=VCC or'GND
80
800
Supply
Current
ee -- 10ur=0/AA
.
_._------.- _._--.- •. _------- - - - - - - - - - - \--._-_... -----_. __ ._.-. .

Vcc -0.1
3.7

1---_ _ _ _ _~1_~____________3_7
_____

-------1--------

31

ns

--\------

.~

ns

37

~1t_!._j_-----+-5__+-._+_-----_- . ________________ \--e.~_
Cpo
50
pF

* Cpo determines the no-load dynamic power dissipation: PD=CPD Vee 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

610

KS54HCTLS
KS74HCTLS

239

Dual 1-01-4 Decoders/Demultiplexers

FEATURES

DESCRIPTION

• Designed specifically for high-speed memory
decoders and data transmission systems
• Incorporates 2 enable inputs to simplify cascading
and/or data reception

These devices are designed to be used in highperformance memory-decoding or data-routing applications
requiring very short propagation delay times. In highperformance memory systems, these decoders can be
used to minimize the effects of system decoding. When
-used with high-speed memories utilizing a fast-enable
circuit, the delay times of these decoders and the enable
time of the memory are usually less than the typical access
time of the memory_

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Driv~Current outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

This means that the effective system delay introduced by
the decoder is negligible.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components .
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

I

FUNCTION TABLE

1G

Vee

1A

2G

1B

2A

1YO

28

1Y1

2YO

1Y2

2Y1

1Y3

2Y2

GND

2Y3

c8SAMSUNG
Electronics

Inputs

-Select
B
A
---"

Enable
G
H
L
L
L
L

X

X

L
L
H
H

L
H
L
H

j----- .
i

i
I

I

I

Outputs

YO

Y1

Y2

Y3

L
H
L
L
L

L
L
H
L
L

L
L
L
H
L

L
L
L
L
H

!
I

611

KS54HCTLS
KS74HCTLS

239'
'

Dual

1~f-4

Decoders/Demultiplexers

LOGIC DIAGRAM

ENABLE

16

(2)

SELECT

lA

INPUTS

(3)
{

lB
DATA
OUTPUTS

_(15)
ENABLE 2G

(14)

SELECT
INPUTS

{

2A
(13)

2B

Absolute Maximum Ratings*
Supply Voltage Range Vce,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vec +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 rnA
Continuous Output Cu'rrent Per Pin, 10
(':"0.5V < Vo < Vee +0.5V)
±70 rnA
Continuous Currenf Through
Vee or GND pins
±250 rnA
Storage Temperature Range, Tstg . . . - 65 ° C to + 150 ° C
Power Dissipation Per Package, Pdt
500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf .
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

612

'I

'I
1

KS54HCTLS
KS74HCTLS

239

Dual 1-of-4 Decoders/Demultiplexers

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 1 0% Unless Otherwise Specified)

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

T. =25°C

Test Conditions

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20j./A
lo=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20j./A
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

j./A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

j./A

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

boIce

Vee Vee -0.1
4.2
3.98

0

VIN=VCC or GND
lour=Oj./A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour=Oj./A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

Ta=25°C
Vcc=5.0V

KS74HCTLS
Ta= -40°C to +85°C
Vcc=5.0V±10%

Typ

Maximum Propagation Delay.
A or B any Y
Maximum Propagation Delay.

G to any Y

tpLH
r-tpHL
tPLH

t------

tPHL

CL=50pF

I

(Input t r • tf~6 ns), HCTLS239
KS54HCTLS
Ta= -55°C to +125°C
Vcc=5.0V± 10%

Unit

Guaranteed Limits

22 30

37

45

22 30

37

45

21

8

35

42

22

8

35

42

ns
ns

Maximum Input Capacitance

CIN

5

pF

Power Dissipation Capacitance *

Cpo

50

pF

* Cpo determines the no-load dynamic power dissipation: PO=CPD VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
EI~ctronic~

613

2401/"41'
'''44 Drivers
Octal Buffers and Line
. '/~'
,~
with 3-State Outputs

KS54HCTLS
KS74HCTLS'
FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(loL 24 rnA @ VOL = 0.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTlS: -40°C to +85°C
KS54HCTlS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These high-speed octal buffers and line drivers are designed specifically to improve both the performance and densityof 3-state memory address drivers. clock drivers. and
bus-oriented receivers and transmitters.

=

The designer has the choice of combin~tions of inverting/
non-inverting outputs and symmetrical complementary input control (both active-low. or one active-low. the,other
active-high).
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels, The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

LOGIC DIAGRAMS

PIN CONFIGURATION
'240

Vee

1<3
1A1

2(3/2G

2Y4

1Y1

1A2

2A4

2Y3

1Y2

1A3

2A3

2Y2

1Y3

1A4

2A2

2Y1

1Y4

GND

2A1

(11

lG

lAl~

(18)

(2)

(41

(16)

(4)

(61

(14)

(8)

(121

lG
(18)

(1)

(2)

(18)

(4)

(16)

(6)

(l4J

(8)

(12)

(AI

(16)

(61

lY3

lA4_(_61_

(19)

?G

2G

·213 for '240 and '244
2G for '24.1

'244

'241

(11

10

('21

~

20

{19)

(11;

(9)

(11

2A2~~

(1)

(15)

('1

(15)

(5)

(17)

(3)

111}

(9)

(13J

I7J

(13)

(15)

(5)

(17)

(3)

(9)

2Y1

(l7J

2Y2

2Y3

_ ( 3 _ ) 2Y4

FUNCTION TABLE
'241, '244
Output

Input
~~.

'240
Output

~--'-.-~--,-

G

G

A

y

y

H
H
L

L
L
H

L
H
X

L
H
Z

H
L
Z

c8SAMSUNG
Electronics

--

614

KS54HCTLS
KS74HCTLS

24011/~"41'11"44
Octal Buffers and Line
~
Drivers with 3-State Outputs

Absolute Maximum Ratings·
Supply Voltage Range Vcc,
-0.5V to +7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vec +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±70 mA
Continuous Current Through
±250 mA
Vcc or GND pins
Storage Temperature Range,Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW'

t Power Dissipation temperature derating:
Plastic Package (N): -'12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Minimum High-Level
VIH
Input
Voltage
- -_ ... _.- .- -- --------- _. __ ._-- _._---Maximum Low-Level
ViL
Input Vol_t_a..:::g_e____~_+__---~
Minimum High-Level
Output Voltage

VOH

Maximum Low-Level
Output Voltage

VOL

Test Conditions

Maximum Quiescent
Supply Current

2.0

0.8

0.8

_____________ _

2_0

Output Enable
=VIH
VOUT=VCC or GND

-----t---------- - .. --~

Icc

--1-----

Vcc -0.1
3.7

VIN=VCC or GND
10uT=OJ.l.A

dCSAMSUNG
• • Electronics

±0.5
.
8.0

±1.0
-------

J.l.A

f--------

---- ----

±10.0
-----

80.0

V
-1-------

f-------- ---

±5.0

r--

V

0.1
0.4

±1.0

--~----+-~-------

~---

- ------

Vcc -0.1
3.84

±0.1
------ .-- 1----

V

-----------

VIN=VIH or VIL
0.1
10=20J.l.A
0
0.1
0.26
0.33
10= 12mA
'2.= 24mA____ t-_ _0_._3_9___+--~_. _____ . 0.5
--- ----

loz

V

0.8
--

VIN=VIH or VIL
10= - 20J.l.A
Vcc Vcc - 0.1
lo_==_-=-~~~ __ ~___~ _ 3.98

Maximum Input
Current

r---~-----------

2.0
-

1------------- -------------------------------

Maximum 3-State
Leakage Current

(Vcc=5V±10% Unless Otherwise Specified).

J.l.A
---

1----

160.0

-----

t----

J.l.A

615

I

KS54HCTLS
KS7~HCTLS

24'0'.''F/"4'
1"/"44 Drivers
Octal Buffers and Line
I~·, /~
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlonst

(Input tr • t,"6 ns). HCTlS240. HCTLS241. HCTLS244
KS74HCTLS
KS54HCTLS
T. =25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vc c =5.0V
Vcc=5.0V%10%
Vcc=5.0V% 10%
Typ

Maximum Propagation Delay.
A to Y

Maximum Output Enable
Time. Enable to Y

Guaranteed Limits

~PLH

CL=50pF
CL=150pF

13 18
16 21

22
27

27
33

tpHL

CL=50pF
CL =150pF

13 18
16 21

22
27

27
33

CL=50pF
17 23
CL=150pF 20 26

29
34

34
40

17 23
CL=50pF
CL=150pF 20 26

29
34

34
40

16 21

26

32

16 21

26

32

tPZH
f----

RL=1kO

tPZL

~~

i

Maximum Output Disable
Time. Enable to Y

~
tpLZ

ns

RL=1kO
CL,=50pF

- -

CIN

Maximum Output Capacitance COUT Output Disabled
Output Disabled
Power Dissipation
Cpo
Output Enabled
Capacitance· (per stage)

5

--~

ns
~-

Maximum Input Capacitance

ns

I------

pF

------ I------

10

pF

5
30

pF

.~

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc' f,

t For AC switching test circuits and timing waveforms see section 2.

cRSAMSUNG
• • Electronics

616

'''43

KS54HCTLS 242~
KS74HCTLS
,~

Quad Bus Transceivers
with 3-State Outputs

FEATURES

DESCRIPTION

• 2-Way Asynchronous Communication Between Data
Buses
• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL = 24 mA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These four· data line transceivers are designed for
asynchronous two-way communications between data
buses.

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their LSTTl counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

INPUTS
Vee

NC

G8A

A1

NC

A2

61

A3

GND

GAB

'242

'243

L

L

A to B

A to B

82

H

H

B to A

B to A

83

H

L

Isolation

Isolation

L

H

Isolation

Isolation

84

I

GBA

LOGIC· DIAGRAMS
'242

'243

A1~----------~

·diSAMSUNG
". Electronics

617

K$54HCTLS
KS14HCTLS

24212.
4·3
14

Quad· Bus Transceivers
with 3-State Outputs

Absolute Maximum Ratings*
Power Dissipation temperature derating:
Plastic Package (N): -12mW!OC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-O.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, Tstg . . . - 65 ° C to + 150 ° C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vce
4.5V to 5.5V
DC Input & Output Voltages *, VIN, Your
OV to Vee
Operating Temperature
KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS

(Vee=5V± 1 0% Unless Otherwise Specified)
°

Characteristic

Symbol

Minimum High-Level
Input Voltage
----_._-_._-_
........-

VIH

Test Conditions

Ta

=25.. C

r-"'--'

J =Ta

Typ

------

2.0

2.0

V

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.33
0.5

0.1
0.4

- - - _ . _ - _ ... _ - - - - - .

Maximum Low-Level
V
0.8
Input Voltage
__. _ - - - - - -IL- - - - ._..__ .._-----_._-_. -_ _--VIN=VIH or VIL
Minimum High-Level
10=-20/AA
Vee Vee -0.1
VOH
Output Voltage
10= -6mA \
4.2
3.98

---_.

...

- - - - - - - - - - - - - - - - - - - - _.. _ . _ - - . - - - - - -

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20/AA
10= 12mA
10=24mA

0

--

-_._-

0.1
0.26
0.39

------

r - - - - - - · - - - - t - - - - - - t - - - - - -------------- - -----.-- . - .. --.-- -----.. --..

Maximum Input
Current

±0.1

VIN=Vee or GND

c - - - - - - - - - - - - - - - - - - - - . - . - - - - - --- ----.-------

Maximum 3-State
Leakage Current
-----_._----_.

Maximum Quiescent
Supply Current
------.-----------.-

Additional Worst
Case Supply
Current

KS54HCTLS
to + 125°C Unit

= - 55°C

Guaranteed Limits
2.0

- _.

;1

KS74HCTLS
40°C to +85°C Ta

.----..-. ------ ...--.-.-- .-.---------

Output Enable
loz
=VIH
.
VouT=Vee or GND
- _ . _ - - .... - - - - -...
I
ec

±0.5

VIN=Vee or GND
10ur=0/AA

8.0

1l.lee

per input pin
VI=2.4V
other Inputs.
at Vec or GND
10ur=0/AA

c8SAMSUNG
Electronics

-

±1.0

±1.0

/AA

- - - - - - -. ---.---- ---.-------... - - - - - - f - - -

±10.0·

±5.0

-.- -- - -- ----c-- - ---.-----

-----.------.-- .. - - - - - - - - -

---

--.---+-------------f-~

80.0

--.--.----f---------- . - - . - - . - - - - - - -

160.0
.--.-----.-.----- ---

I

2.7

2.9

3.0

mA

I

618

KS54HCTLS
KS74HCTlS

242/~
/"43

AC ELECTRICAL CHARACTERISTICS
Characteristic

Quad Bus Transceivers
with 3-State Outputs

1

(Input tr ,

Symbol Conditions t

tf~6 ns), HCTLS242, HCTLS243

KS74HCTLS
KS54HCTLS
T.=25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V± 10%
Vcc=5.0V±10%
-- - ----------- --

Guaranteed limits

Typ

tpLH
Maximum Propagation Delay,
AtoBorBtoA

CL=50pF
CL=150pF

14 18
17 21

22
27

c---

---.---~----

CL=50pF
CL =150pF

14 18
17 21

22
27

CL=50pF
tPZH
CL =150pF
- - RL=1 kO f - CL=50pF
tPZL
CL=150pF

23 30
26 33

38
43

23 30
26 33

38
43

~ RL =1 kO

18 25

31

18 25

31

tpHL

GAB to B, GBA to A
Maximum Output Disable
Time, GAB to B, GBA to A
Maximum Input Capacitance
Maximum Output Capacitance

tpLZ

CL=50pF

i

27
33

ns

---

--------

45
51

r----------

--

ns

45
51
r---------37

ns

37
------------

---

pF

5

CIN

--

COUT Output Disabled

!Power Dissipation Capacitance· CPD
(per stage)

-

27
33

--

Maximum Output
Enable Time

--

Output Disabled
Output Enabled

10

5
30

- _.... _----

--

-

-

--

pF

-------- -----

1----

pF

I

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fill
t For AC switching test circuits and timing waveforms see section 2_

I

c8SAMSUNG
Electronics

619

KS54HCTLS
KS74HCTLS

245
.

Octsl Bus Transceivers with
3-State Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• 3-state outputs with high drive current
(lOL 24mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55 ° C to + 125 ° C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These high-speed octal bus transceivers are designed
for synchronous two-way communication between data
buses. The control function implementation minimizes
external timing requirements.

=

=

The devices allow data transmission from the A bus to
the B bus or from the B bus to the A bus depending
upon the logic level at the direction control (DIR) input.
The enable input (<3) can be used to disable the device
so that the buses are effectively isolated.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

PIN CONFIGURATION

LOGIC DIAGRAM

DIR

Vee

A1

G

A2

81

A3

82

A4

83

A5

84

A6

85

A7

85

A8

87

GND

88

DIR
(19)

G

A1
(18)

81

A2
(17)
82

(16)
83

(15)
84

(14)
85

FUNCTION TABLE
(13)

85

Inputs

G

Operation

(12)
87

DIR

L

L

Bus B Data to Bus A

L

H

Bus A Data to Bus B

H

X

Isolation

c8SAMSUNG
Electronics

(11)
88

620

· KS54HCTLS
KS74HCTLS

245

Octal Bus Transceivers with
3-State Outputs

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
-KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)
Range

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V+
- 1 0% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ

I

KS74HCTLS
:I
KS54HCTLS
Ta = -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OI-'A
6mA
10

Maximum Low-Level
Output Voltage

VOL

VIN = VIH or VIL
10=201-'A
10=12mA
10 24mA

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

I-'A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VOUT Vee or GND

±0.5

±5.0

±10.0

I-'A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

I-'A

2.7

2:9

3.0

mA

Additional Worst
Case Supply
Current

VIN=Vee or GND
10UT-01-'A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10UT-01-'A

.t.lee

=8SAMSUNG
• Electronics

I

Vee Vee -0.1
3.98
4.2
0

621

I

· KS54HCTLS245
KS74HCTLS
_

Octal Bus, Transceivers with
3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Condltlons t

(Input t r , tf"6 ns), .HCTLS245
KS74HCTlS
KS54HCTlS
T.=25°C T.= -400C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.OV±10%
Vcc=5.OV± 10% __
Vcc=5.OV
Typ

Maximum Propagation Delay,
A to B or B to A

tpLH

9

12
12 15

15
20

tpHL

CL=50pF
CL = 150pF

9 12

Maximum Output Enable
Time, G to A or B

- - - RL =1 kO

Maximum Output Disable
Time, G to A or B

~ RL=1kO

~m

18
34

ns

~---------

tPZH

f--.

Guaranteed Limits

CL=50pF
CL=150pF

tPZL

tpLZ

12 15

15
20

CL=50pF
30 40
CL=150pF 33 43

50
55

CL=50pF
30 40
CL =150pF 33 43

50
55

CL=50pF

- -1----- _.-

18
34
- - - - - - - -_._.. _.-

+----

60
66

ns

--------~.-

60
66
- - - -_ _ .__ .0-

18 25

31

37

18 25

31

37

ns
-~

Input Capacitance

5

CIN

Maximum Output Capacitance COUT Output Disabled

10

Power Dissipation
Capacitance* (per stage)

5
30

Cpo

G=Vcc
G=GND

--

f-------

pF

--------~---

..

I-'--

- - J'£..
pF

* CPD determines the no-load dynamic power dissipation: PO=CPD Vee' f,flt For AC switching test circuits and timing waveforms see section 2,

=8SAMSUNG
Electronics

622

KS54HCTLS
KS74HCTLS

251

1-01-8 Data Selectors/Multiplexers
with 3-State Outputs

FEATURES

DESCRIPTION

• Three-State Version of '151
• Three-State Outputs Interface Directly with System
Bus
• Performs Parallel-to-Serial Conversion
• Complementary Outputs Provide True and Inverted
Data
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL 24 rnA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
.. Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These data selectors/multiplexers contain full binary
decoding to select one·of-eight data sources and feature
strobe-controlled complementary three-state outputs.

=

The three-state outputs can interface with and drive data
lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state), the lowimpedance of the single enabled output will drive the bus
line to a high or low logic level. 80th outputs are controlled by the strobe (G). The outputs are disabled when G is
high.

=

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

03

Vee

02

04

01

05

DO

06

y

07

W

A

G

B

GNO

C

I

LOGIC DIAGRAM

(4)

01(3)

o

(1)

I~~~ 04.:..(1:,.:5.:..)--------t=t-=t=i~~gJ
o

FUNCTION TABLE

(14)

os (13)

~
~-~

OUTPUTS

INPUTS

. SELECT
. . --~-

--

STROBE
-

C

B

A

G

X
L
L
L
L
H
H
H
H

X
L
L
H
H
L
L
H
H

X
L
H
L
H
L
H
L
H

H
L
L
L
L
L
L
L
L

Y
Z
00
01
02
03
04
05
06
07

W

Z
00
51
52
53
54
55
56
57

~

dCSAMSUNG
• • Electronics

623

KS54HCTLS
KS74HCTLS

251
....

1-01-8 Data 5elec,IorslMulliplexers
wilh 3-51ale OU.tputs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, . . . .
-O.5V to + 7V
DC Input Diode Current, 11K
(VI < -O.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins. . . .
. .. ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
.... 500 mW

ReCommended Operating Conditions
Supply Voltage, Vee . . . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta == 25°C
Typ

KS74HCTLS
KS54HCTLS
Ta == -40°C to +85°C Ta == -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/-IA
10= -6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/-lA
lo=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

/-I A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

/-I A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/-I A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

blee

VIN=Vee or GND
10uT=O/-lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=O/-lA

c8SAMSUNG
Electronics

Vee Vee -0.1
3.98
4.2
0

I
I

!

I

624

KS54HCTLS
KS74HCTLS

251

1-of-8 Data Selectors/Multiplexers
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Symbol Conditions t

Characteristic

(Input tr , tf~6 ns), HCTLS251

~S74HCTLS :1
KS54HCTLS
Ta =25°C T a = -400C to +85°C Ta= -55°C to +125°C
Vcc=5.0V
Unit
f--__
Vcc=5.0V±10%
I Vcc=5.0V± 10%
Typ

CL =50pF
CL=150pF

tpLH
jMaXimUm Propagation Delay,
A, B or C to Y
- -

~

~-

-

f-----

40
46

ns

.--~~---

tpHL

CL=50pF
CL =150pF

20 26
23 29

33
38

40
46

fPLH

CL=50pF
CL =150pF

25 34
28 37

42
47

50
56

tpHL

CL=50pF
CL=150pF

25 34
28 37

42
47

50
56

tpLH

CL=50pF
CL=150pF

11 15
14 18

19
24

22
28

tpHL

CL=50pF
CL=150pF

11 15
14 18

19
24

22
28

tpLH

CL=50pF
CL =150pF

17 22
20 25

28
33

33
39

tpHL

CL=50pf
CL =150pF

17 22
20 25

28
33

33
39

CL=50pF 24 32
CL=150pF 27 35

40
45

48
54

CL=50pF 24 32
CL=150pF 27 35
CL=50pF 24 32
RL = 1 kO CL=150pF 27 35
CL=50pF 24 32
CL=150pF 27 35

40
45

48
54

40
45

48
54

40
45

48
54

Maximum Propagation Delay,
Any D to Y
------,

Maximum Output Enable Time,
G to Y or W

tPZH
RL =1 k:O

t-------

tPZL
-~--.-

tpHZ
Maximum Output Disable Time,
G to Y or W

r-:---tpLZ

Maximum Input Capacitance

--

~

ns

COUT Output Disabled

i

Cpo

10

~

1

ns

!'lSI
--

~-

ns

pF
- -[ - - pF

5

CIN

f--

,Maximum Output Capacitance
.Power Dissipation
Capacitance·

ns

-~-

Maximum Propagation Delay,
Any D to W

--

33
38

~-----

Maximum Propagation Delay,
A, B or C to W

f----~

Guaranteed Limits

20 26
23 29

pF
0

i

* Cpo determines the no-load dynamic power dissipation: PD=CPO Vee 2 fin-

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

625

I

KS54HCTLS
KS74HCTLS

253

Dual 1-0'-4 Data Selectors/Multiplexers
with 3-State Outputs

FEATURES

DESCRIPTION

•
•
•
•

Each of these data selectors/multiplexers contains inverters
and drivers to ~upply full binary decoding data selection to
the AND-OR gates. Separate output control inputs are pro·
vided for each of the two four-line sections.

•
•
•
•
•

Three-State Version of '153
Permits Multiplexing from N lines to 1 line
Performs Parallel-to-Serial Conversion
Function, pin-out, speed and drive compatibility with
54/74LS logic family
Low power consumption characteristic of CMOS
3-State outputs with high drive current
(IOL 24 mA @ VOL O.5V) for direct bus interface
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C

=

=

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

Vee

B

lC3
lC2
lC1

The three· state outputs can interface with and drive data
lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state) the lowimpedance of the single enabled output will drive the bus
line to a high or low logic level. Each output has its own
strobe (G). The output is disabled when its strobe is high.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components .

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

SELECT

DATA INPUTS

OUTPUT
CONTROL

OUTPUT

CO C1 C2 C3

G

y

H
L
L
L
L
L
L
L
L

Z
L
H
L
H.
L
H
·L
H

2<3
A

2C3
2C2
2C1

·8

A

X
L
L
L
L
H
H
H
H

X
L
L
H
H
L
L
H
H

X
L
H
X
X
X
X
X
X

X
X
X
L
H
X
X
X
X

X
X
X
X
X
L
H
X
X

X
X
X
X
X
X
X
L
H

Address inputs A and B are common to both sections.

c8SAMSUNG
Electronics

626

KS54HCTLS
KS74HCTLS

253

Dual 1-of-4 Data Selectors/Multiplexers
with 3-State Outputs

LOGIC DIAGRAM

OUTPUT
lY

I

OUTPUT
2Y

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, ilK
(V, < -0.5V or V, > Vee +0.5V)
±20 mA
DC Output Diode Current,loK
(Vo < -0.5V or Vo > Vee +0.5V). :;!:20 mA
Continuous Output Curret1t Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vce or GND pins
± 125 mA
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW
.. Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

III

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages·, V'N, VOUT
OV to Vce
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

627

KS54HCTLS
KS74HCTLS

253

Dual 1-01-4 Data Selectors/Multiplexers
with 3-State Outputs

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V±10% Unless Otherwise Specified)
KS74HCTLS
KS54HCTLS
T.= -40°C to +85°C T.= -55°C to +125°C Unit

T. =25°C

SymbOl Test Conditions

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

V,H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V,L

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

V'N=V'H or V,L
lo=-20JolA
lo=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

V,N=V,H or V,L
lo=20JolA
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

/AA

Maximum 3-State
Lel;lkage Current

loz

Output Enable
=V,H
VOUT=VCC or GND

±0.5

±5.0

±10.0

JolA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/AA

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

6 1cc

Vee Vee -0.1
4.2
3.98
0

V'N=VCC or GND
louT=OJolA
per input pin
V,=2.4V
other Inputs:
at Vee or GND
louT=OJolA

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input t r , tf~6 ns), HCTLS253
KS74HCTLS
KSS4HCTLS
T.=2SOC
T.=-400Cto +8S OC T.=-SSOCto +12SoC
Vcc=S.OV
Unit
Vcc=S.OV±10%
Vcc=S.OV± 10%
Typ

Maximum Propagation Delay,
A or B to Any Y

Maximum Propagation Delay,
Data (any C) to any Y

Maxim!!.m Output Enable
Time, G to Y

tpLH

24 32
27 35

40
45

48
54

tpHL

CL=50pF
CL =150pF

24 32
27 35

40
45

48
54

tpLH

CL=50pF
CL=150pF

15 20
18 23

25
30

30
36

tpHL

CL=50pF
CL =150pF

15 20
18 23

25
30

30
36

CL=50pF
17 22
CL=150pF 20 25

28
33

33
39

CL=50pF
17 22
CL=150pF 20 25

28
33

33
39

tPZH
f------

RL=1kO

tPZL
Maximum Output Disable
Time, G to Y
Maximum Input CapaCitance

tpHZ

I---

tpLZ

RL=1kO
CL=50pF

C,N

. Maximum Output CapaCitance COUT Output Disabled
Power Dissipation
CapaCitance *

Guaranteed LImits

CL=50pF
CL=150pF

17 22

28

33

17 22

28

33

ns

ns

ns

ns

5

pF

10'

pF

Cpo

pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee fin.
2

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics
'

628

KS54HCTLS
KS74HCTLS

2571258 Quad 2-Line to 1-Line Data Selectors/
Multiplexers with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C
• Package options include" small outline" packages
(Available Tape & Reel), standard DIPs.

The '257 and '258 multiplex signals from for-bit data
sources to four-output·data lines in bus organized systems.
The data presented at the outputs is non-inverted for the
'257 and inverted for the '258.

PIN CONFIGURATION

FUNCTION TABLE

=

=

Aia

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

Inputs

Vee

1A

~

1B
1Y
2A
2B
2Y

4A
4B
4Y
3A
3B
3Y

GND

Output
Control

Output Y

I···· select

Data

'257

G

AlB

A

B

H
L
L
L
L

X
L
L
H
H

X
L
H
X
X

X
X
X
L
H

'258

Z

Z

L
H
L
H

H
L
H
L

LOGIC DIAGRAMS
'257

'258

1A------------~L-~

(3)

1Y

1Y

...

1B----------4-~ ~

(51
2A----------4-~

2A~--------~~-J

(6)
2B-----------r~L-~

2Y

2B---------~~-J

(11)
3A-----------r4-L-~

(10)

3A---------~~-J

3Y

3B---------~4-L-~

(14)

4A

-------r+-i..-J
(13)

4Y

4B---------~4-~_J

c8SAMSUNG
Electronics

629

I

KS54HCTLS
KS74HCTLS

2571258

Quad 2-Line to 1-Line Data Selectors/
Multiplexers with 3-State Outputs

Absolute Maximum Ratings*
Supply Voltage Range Vcc. .. . .
-0.5V to + 7V
DC Input Diode Current. hK
(VI < -0.5V or V, > Vcc +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo <-0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin. 10
(-0.5V < Vo < Vcc +0.5V)
±70 mA
Continuous Current Through
Vcc or GND pins. .
±250 mA
Storage Temperature Range. Tstg ... -65°C to +-150°C
Power Dissipation Per Package. Pdt .
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vcc . .
4.5V to 5.5V
DC Input & Output Voltages·. V,N. VOUT .. OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise ~ Fall Times. t r • tf
Max 500 ns

I

* Absolute. Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long ex·
posure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 10% Unless Otherwise Specified)

Test Conditions

Minimum High-Level
V,H
2.0
In__p_u_t_V__o__
'ta_g~::...e__ ._--+~ ___ ._______._.__._
Maximum Low-Level
0.8
V,L
111~~_~?'tage__ .__--+-___-+-____.__ ._..__ f- ..-.- _ .
V,N=V,H or V'L
Minimum High-Level
10=-20IJA
Vcc Vce -0.1
VOH
Output Voltage
'
10=-6mA
4.2
3.98

.+-

- - - - - - - - - - + - - - - 1 - - - - - - - ' ' - - . - - - - --.. -

Maximum Low-Level
Output Voltage

VOL

V'N=V'H or V,L
10=201JA
10=12mA
10=24mA

o

0.1
0.26
0.39

2.0

v

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.33
0.5

0.1
0.4

±1.0

±l-.O

±5.0

±10.0

-~--r-------

Maximum Input
hN
VIN=Vce or GND
±0.1
Current .----+----+---------e----r---.--.-Output Enable
Maximum 3-State
±0.5
loz
=V'H
Leakage Current
VouT=Vee or GND
--..... ---.------I-------t---=--'~~-.---

2.0

+----

V

. ----. -. f---

'MaXirnum Quiescent Icc
VIN=Vee or GND I
8.0
80,0
160.0
jS~u~~'::p~p~ly__C=_u=r.:...re:.:.n:.:.t_ __+--__l_'.=o::-U-T:..=-O---IJ-A---_+__~-- ____ .___.________---+___________ ._
per input pin
IAdditional Worst
V,=2.4V
iCase Supply
~Iee other Inputs:
2.7
2.9
3.0
I Current
at Vee or GND
I
10UT=0/JA.

r

dCSAMSUNG
• • Elec~ronics

IJA
--

mA

630

KS54HCTLS
KS74HCTLS

257/258 Multiplexers
Quad 2-Line to 1-Line.Oata Selectors/
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input t r , tf~6 ns), HCTLS257, HCTLS258
KS74HCTlS
KS54HCTLS
T. =25°C
T.=-40°Cto +85°C T.= -55°C to +125°C
Unit
Vee=5.0V
Vee = 5.0V:!: 10%
Vee=5.0V:!: 10%
Guaranteed Limits

Typ

Maximum Propagation Delay,
A to B to any Y

tPLH

CL=50pF
CL =150pF

14 18
17 21

23
28

27
33

tpHL

CL=50pF
CL =150pF

14 18
17 21

23
28

27
33

tpLH

CL=50pF
CL =150pF

16 21
19 24

26
31

31
37

tpHL

CL=50pF
CL =150pF

16 21
19 24

26
31

31
37

CL=50pF
22 30
CL=150pF 25 33

37

42

45
51

CL=50pF
22 30
CL =150pF 25 33

37
42

45
51

Maximum Propagation Delay,

AlB to any Y

Maxim~m

Output Enable
Time, G to any Y

tPZH
I-----

RL =1kO

tPZL
Maximum Output Disable
Time, G to any Y
Maximum Input Capacitance

tPHZ

I-----

tpLZ

RL =1kO
CL =50pF

CIN

Maximum Output Capacitance COUT Output Disabled
Power Dissipation
Capacitance *

20 27

34

41

20 27

34

41

"--

I---

ns

ns

-~

5

~

t---- ----

10

CpD

ns

ns
pF

--~~
pF

. Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fin.

t

For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

631

I

KS54HCTLS
KS74HCTLS

25.9

8-Bit Addressable Latches

FEATURES

DESCRIPTION

• 8-Bit parallel-out storage register performs serial-toparallel conversion with storage
• A,synchro'nous parallel clear
• Active high decoder
• Enable/Disable input simplifies expansion
• Expandable for N-bit applications
• Four distinct functional modes
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10L =8 mA @ VOL =0.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C

The '259 is a high·speed addressable latch designed for
general purpose storage applications in digital systems. It
can be used for implementing working registers, serial·
holding registers and active·high decoders or
demultiplexers.

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

In the clear mode, all outputs are low and unaffected by
the address and data inputs.

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output VOltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

80

Vee

81

ClR

82

G
D

00
01

07

02

06

03

05

GND

04

CLR

G

H
H
L
L

L
H
L
H

Output of
Addressed
Latch

Each
Other
Output

D
QiO

QiO
QiO

0
L

L
L

In the addressable latch mode, data on the data input (D)
is written into the addressed latch, In this mode, data will
be written into the addressed latch with all non-addressed
latches remaining in their previous states.
In the memory mode, all latches remain in their previous
state and are unaffected by the data of address inputs,
In the demultiplexing mode, addressed outputs will follow
the state of the D input and all other outputs will remain low.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LA TCH SELECTION TABLE

FUNCTION TABLE

Inputs

The '259 has four distinct modes of operation that are
selected via the clear (CLR) and enable (<3) inputs: 1) ad·
dressable latch; 2) memory; 3) active·high eight-channel
demultiplexer; and 4) clear.

Select Inputs
Function
Addressable Latch
Memory
a-Une Demultiplexer
Clear

o ... the level at the data input.
010 = the level of 010 (i = 0, 1, '" 7, as appropriate) befate the
Indicated steadY'state input conditions were established,

c8SAMSUNG
Electronics

Latch

52

51

50

Addressed

L
L
L
L
H
H
H
H

L
L
H
H
L
L
H
H

L
H
L
H
L
H
L
H

0
1

2
3
4

5
6
7

632

KS54HCTLS
KS74HCTLS

259

8-Bit Addressable Latches

LOGIC DIAGRAM

ern
(15\

so

G

Sl

S2

(14\
D
(13)

00

01

02

03

04

05

06

I

07

Absolute Maximum Ratings*
Supply Voltage Range Vee, ...... -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±35 mA
Continuous Current Through
Vce or GND pins
± 125 mA
Storage Temperature Range, T 51g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

=8SAMSUNG
Electronics

Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tl
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

633

KS54HCTLS2
KS74HCTLS '

59

8-Bit Addressable Latches

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Test Conditions

f~r-~~·--···--

J

KS74HCTLS
KS54HCTLS
_!"a = - 40°C to + 85°C Ta = - 55°C to +"I!~~ Unit

Typ
Minimum High-Level
Input Voltage

Guaranteed Limits
2.0

V,H

2.0

V

2.0

-~

Maximum Low-Level
Input Voltage

V,L

0.8

r----------~ r----~ r----.--.---~----

Minimum High-Level
Output Voltage

VOH

~-.--

Y,N = V,H or V,L
lo=- 2O/AA
lo=-4mA

0.8

0.8

----- r------ ... -. -- ---_...._ - - - - - - - - - - - - - -

Vee Vee -0.1
4.2
3.98

Vee -0.1
3.84

V
---.---~.--

~

Vee -0.1
3.7

---

V
~--.-

Maximum Low-Level
Output Voltage

VOL

------~--r_

V,N=V,H Qr V,L
lo=20",A
lo=4mA
lo=8mA

0

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4
--~

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

-

~-

Maximum Quiescent
Supply Current

Icc
r·

Additional Worst
Case Supply
Current

!llcc

V'N=VCC or GND
IOUT=O/AA
per input pin
V,=2.4V
other Inputs:
at Vec or GND
10UT=0",A

8.0

Symbol

Conditions t

--- - ---

--"

-

160.0
__ 0_-

AC ELECTRICAL CHARACTERISTICS
Characteristic

__.-

------_. __.

80.0

2.7

V

-----_._--------- - ---

2.9

-

3.0

~--

/AA
---

/AA
c-

mA

(Input t r • tl<6 ns). HCTLS259

T. =25°C
Vcc=5.0V

KS74HCTLS
T.= -40°C to +85°C
Vcc=5.0V:!: 10%

Typ

KS54HCTLS
T.= -55°C to +125°C
Vcc=5.0V:!: 10%

Unit

Guaranteed Limits

Maximum Propagation Delay
CLR to any Q

tpHL

22 30

37

45

Maximum Propagation Delay.
Data to Any Q

tpLH
r----tpHL

20 27

34

41

20 27

34

41

Maximum Propagation Delay.
Address to any Q

I - - - - - CL=50pF

tpLH

26 34

43

51

tpHL

26 34

43

51

tpLH

22 30

37

45

tpHL

22 30

37

45

8 10

13

15

8 10

13

15

8 10

13

15

ns

0

0

ns

----

Maximum Propagation Delay.
G to any Q
Minimum Pulse
Width

I

CLR LOW

I GLow

I-----

tw

Minimum Setup Time.
Data or Address before

Gt

tsu

Minimum Hold Time.
Data or Address before

Gt

th

-3

Maximum Input Capacitance

C'N

5

Power Dissipation Capacitance *

CPD

80

0

determines the no-load dynamic power dissipation: PD=CPD Vcc'
t For AC switching test circuits and timing waveforms see section 2.
* CpD

c8SAMSUNG.
Electronics

ns
ns
ns
ns
ns

pF
pF
fin.

634

Quad Exclusive-NOR Gates
with Open-Drain Outputs

KS54HCTLS·266
KS74HCTLS
FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74lS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOl =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTlS: -40°C to +85°C
KS54HCTlS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices contain four independent exclusive-NOR
gates with open-drain outputs. Using a suitable pull-up
resistor, these outputs may be connected to other opendrain outputs to implement wired-AND functions.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

r

(3,4,10,11)

1A

Vee

18

49

1Y

4A

2Y

4Y

2A

3Y

29

38

GND

3A

:

(1,5,8,12)
(2,6,9,13)

)D---1

y

I

.

FUNCTION TABLE

Inputs

Output

A

B

Y

L
L
H
H

L
H
L
H

H
L

L
H

=8SAMSUNG
Electronics

635

KS54HCTLS
KS74HCTLS

266

Quad Exclusive-NOR Gates
with Open-Drain Outputs

Absolute Maximum Ratings*
Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±35 inA
Continuous Current Through
Vce or GND pins
± 125 mA
Storage Temperature Range, T519 ... -65°C to +150°C
Power Dissipation Per Package, Pdt. . .
500 mW

t Power Dissipation temperature. derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, Your
OV to Vec
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
.. Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
The'se are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

I

KS74HCTLS
KS54HCTLS
Ta = -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

Vil

0.8

0.8

0.8

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or Vil
10=20J.lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

J.lA

Maximum Output
Leakage Current

loz

VIN=VIH or Vil
Vour=Vcc

±0.5

±5.0

±10.0

J.lA

Maximum Quiescent
Supply Current

Icc

20.0

40.0

J.lA

2.9

3.0

mA

~-.--

Additional Worst
Case Supply
Current

ll.lec

0

VIN=Vee or GND
10ur=OJ.lA
per input pin
VI=2.4V
other Inputs:
at Vce or GND
10ur=OJ.lA

2.0
--

Symbol

Conditions t

~

2.7

AC ELECTRICAL CHARACTERISTICS
CharacteristiC

.-

(Input t r ,

Ta=25°C
Vee=5.0V

tf~6

ns), HCTLS266

KS74 HCTLS
KS54 HCTLS
Ta=-40°C to +85°C Ta = - 55 ° C to + 125 ° C
Unit
Vee = 5.0V ± 10%
Vee=5.0V± 10%

Typ
Maximum Propagation Delay

tplH

CL=50pF
r---RL =1 kO
tpHL

Maximum Input CapaCitance
Power Dissipation Capacitance *

CIN

Guaranteed Limits

18

25

31

37

16

22

28

33

5

(per gate)
15
CPD
* CPD determines the no-load dynamic power diSSipation: Po=Cpo Vee' fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
• Electronics

ns
pF
pF

636

KS54HCTLS
KS74HCTLS

273

Octal 0-Type Flip-Flops with Clear

FEATURES

DESCRIPTION

• Eight positive-edge-triggered D-type flip-flops with
single-rail outputs
• Buffered common clock and asynchronous clear

These devices are high-speed octal registers. They consist of eight positive-edge-triggered D-type flip-flops with
individual D inputs and Q outputs. All flip flops are loaded
and cleared simultaneously by the common buffered clock
(ClK) and clear (ClR) inputs.

• Function, pin-out, speed and drive compatibility with
54174lS logic family
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
(IOl = 24mA @ Val = O.5V) for direct bus Interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C

Information at the D inputs meeting the setup time requirements is transferred to the Q outputs on the positivegoing edge of the clock pulse. When the clock input is at
either the high or low level, the D input Signal has no effect at the output.
These devices provide speeds and drive capability
equivalent to their lSTIl counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

FUNCTION TABLE

I

(Each Flip-Flop)
ClR

Vee

10

80

10

80

20

70

20

70

30

60

3D

60

40

SO
SO

40

GNO

Inputs

Output
Q

ClR

ClK

0

L
H
H

X

X

l

t
t

H
L

H

H

l

X

Qo

l

ClK

LOGIC DIAGRAM
10
(11)

20
(3)

3D

SO

40

(7)

(4)

60
(13)

(8)

80

70

(14)

(17)

(18)

ClK

(2)

10

c8SAMSUNG
Electronics

(S)

20

(6)

30

(9)

40

(1S)

(12)

SO

60

(16)
7Q

(19)
80

637

273

KS54HCTLS
KS74HCTLS ........ , .

Octal D-Type Flip-Flops with Clear

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-o;sV to + 7V
DC Input Diode Current, 11K
(VI < -O.SV or VI> Vee +(}.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -O.SV or Vo > Vee +O.SV)
±20 rnA
Continuous Output Cu'rrent Per Pin, 10
(-O.SV < Vo < Vee +O.SV)
±70 rnA
Continuous Current Through
Vee or GND pins
±2S0 rnA
Storage Temperature Range, Tstg . . . -6SoC to +1S0°C
Power Dissipation Per Package, Pdt
SOO mW

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 6SoC to 6SoC

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . . . .
4.SV to S.SV
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +8SoC
KSS4HCTLS: -SsoC to +12SoC
Input Rise & Fall Times, tr , tf
.. Max SOO ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vce or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=SV± 10% Unless Otherwise Specified)

Ta =25°C
Typ

Minimum High-Level
!~put Voltage

Maximum Low-Level
Input Voltage

VIH
VIL

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

2.0

2.0

2.0

V

0.8

0.8

0.8

V

Vee -0.1
3.84

Vce -0.1

0.1
0.26
0.39

0.1
0.33
O.S

0.1
0.4

V

±0.1

±1.0

±1.0

J.lA

8.0

80.0

160.0

J.lA

2.7

2.9

3.0

rnA

f-.

Minimum High-Level
Output Voltage

VOH

f-.

VIN=VIH or VIL
10=-20J.lA
10=-6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/JA
10=12mA
10=24mA

Maximum Input
Current

liN

VIN=Vce or GND

Maximum Quiescent
Supply Current

lee

Additional Worst
Case 'Supply
Current

l:I.lcc

VIN=Vec or GND
10uT=0/JA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10uT=OJ.lA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

3.7

V

638

KS54HCTLS
KS74HCTLS

273

Octal 0-Type Flip-Flops with Clear

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input tr • tj";;6 ns). HCTlS273
T. =25°C
Vcc=5.0V

KS74HCTLS
KS54HCTLS
-40°C to +85°C T. = -55°C to +125°C
Unit
Vcc=5.0V:t10%
Vcc=5.0V:t 10%

'1'. =

Typ

Maximum Clock Frequency
Maximum Propagation Delay.
ClK to any
Maximum Propagation Delay.
ClR to any Q
ClR low

Minimum Pulse
ClK High or low
Width
Minimum Setup Data
Time before
Clear inactive
ClKt
State
Minimum Hold Time. Data after ClKt

CL=50pF

40 30

25·

20

tpLH

CL=50pF
CL=150pF

20 27
23 30

33
38

40
46

tPHL

CL=50pF
CL=150pF

20 27
23 30

33
38

40
46

tpHL

CL=50pF
CL=150pF

20 27
23 30

33
38

40
46

10 13

17

20

10 13

17

20

10 13

17

20

13 17

21

25

0

0

tw
tsu

CIN

Power Dissipation Capacitance"

Cpo

r

-3

th

Maximum Input Capacitance
*

Guaranteed Limits

f max

0

5
(per package)

=8SAMSUNG
Electronics

ns

ns
ns
ns

ns

--f - -

pF
pF

150

Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee'
For AC switching test circuits and timing waveforms see section 2.

MHz

fin

I

639

KS54HCTLS
KS74HCTLS

2Q6

0'

9-Bit Parity GeneratorslCheckers

FEATURES

DESCRIPTION

• Generates Odd or Even Parity for Nine Data Lines
• Cascadable for N-Bits Parity
• Can be used to Upgrade Existing Systems using MSI
Parity Circuits
• Function, pln-out, speed and drive compatibility with
54174lS logic family
,
• low power consumption characteristic of CMOS
• High-Drive-Current outputs:
(loL =24 mA @ VOL =O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These universal, nine-bit parity generators/checkers feature
odd and eve/) outputs to facilitate operation of either odd
or even parity application. The word-length capability is easily expanded by cascading.
The devices can be used to upgrade the performance of
most systems utilizing the '180 parity generator/checker,
Although the '280 is implemented without expander inputs,
the corresponding function is provided by the availability
of an input at pin 4 and the absence of any internal con~
nection at pin 3. This permits the '280 to be substituted
for the '180 in existing designs to produce an identical function even if the devices are mixed with existing '180's.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps ,to Vee and
ground.

FUNCTION TABLE

PIN CONFIGURATION

G

Vee

H

NC

E

0
l: EVEN

C

l:ODD

B

GND

A

=8 SAMSUNG
Electronics

NUMBER OF INPUTS A
THRU I TJiAT ARE HIGH
0,2.4,6,8
1,3.4,5,9

OUTPUTS
~

EVEN
H
L

~

ODD
L
H

640

KS54HCTLS
KS74HCTLS

280

9-Bit Parity Generators/Checkers

LOGIC DIAGRAM

A (8)

B (9)

C (10)

I
eVEN

o

(11)

(12)

F (13)

000

I

(1)

G

H

I

(2)

(41

Absolute Maximum Ratings*
Supply Voltage Range Vee, ..
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -O.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-O.5V < Vo < Vee +0.5V)
±35 rnA
Continuous Current Through
Vee or GND pins
± 125 rnA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/o C from 65 ° C to 85 ° C

Recommended Operating Conditions
Supply Voltage, Vee . . . .
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vce or GND)

641

28'" 0

,KSS4HCTLS
KS74HCTLS

9-Bit Parity Generators/Checkers

DC ELECTRICAL CHARACTERISTICS
Symbol Test Conditions

Charac:teristlc:

(Vcc=5V± 1 0% Unless Otherwise Specified)
KS74HCTLS
KS54HCTLS
T.= -40°C to +85°C T.= -55°C to +125°C Unit

T. =25°C
Typ

Guaranteed Limits

~

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

u.8

u.B

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/oiA
10= -6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/oiA
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

IJA

8.0

BO.O

160.0

/oIA

2.7

2.9

3.0

mA

--

Maximum Input
Current
Maximum Quiescent
Supply ~~~~_~_
Additional Worst
Case Supply
Current

Icc
-----

llicc

Vee Vee -0.1
4.2
3.98
0

VIN=VCC or GND
10ur=O/oiA
per input pin
VI=2.4V
other Inputs:,
at Vee or GND
10uT==O/oiA

AC ELECTRICAL CHARACTERISTICS
Characteristic

--_ ...

KS54HCTlS
~ KS7 Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu·rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±70 mA
Continuous Current Through
Vee or GND pins . . .
± 250 mA
Storage Temperature Range, T5 tg . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vee
Operating Temperature
Range
·KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 10% Unless Otherwise Specified)

T. =25°C

Test Conditions

Typ

KS74HCTLS
T. = -40°C to +85°C T.

KS54HCTLS
+125°C Unit

= -55°C to

Guaranteed Limits

Minimum
High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum
Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1

Vee -0.1

3.84

3.7

VIN=VIH or VIL
Minimum HighLevel Output
Voltage

VOH

f-

10=-20~A
Vee Vee -0.1
Q'A and Q'H outputs:
4.2
3.98
10= -4mA
QA thru QH outputs:
10=-6mA
4.2
3.84

V

3.7

VIN=VIH or VIL
10=20~A

Miximum
Low-Level
Output Voltage

VOL

Q'A and Q'H outputs:
10=4mA
10=8mA
QA thru QH outputs:
10=12mA
10=24mA

0

0.1

0.1

0.1

0.26
0.39

0.33
0.5

0.4

0.26
0.39

0.33
0.5

0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

j.tA

Maximum 3-State
Leakage Current

loz

Output Enable = VIN
VouT=Vee or GND

±0.5

±5.0

±10.0

j.tA

Maximum
Quiescent
Supply Current

Icc

VIN=Vee or GND
10uT=0j.tA

8.0

80.0

160.0

j.tA

per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0j.tA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Iee

c8SAMSUNG
Electronics

645

I

KS54HCTLS
KS74HCTLS

299

8-Bit ·Universal Shift/Storage Registers
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r • tf:Et6 ns)'. HCTLS299
T = 250C
KS74HCTLS
KS54HCTLS
•
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V±10%
Vcc=5.0V± 10%

Conditions t

Symbol

Typ

Guaranteed Limits

Maximum Clock Frequency

fmax

35 25

20

18

Maximum Propagation Delay.
CLK to QIA or Q'H

tpLH

26. 35

4

53

26 35

44

53

30 40

50

60

24 32
27 35
f-.

40
45

48
54

24 32
27 35

40
45

48
54

30 40
33 43

50
55

60
66

20 26
23 29

33
38

39
45

20 26
23 29

33
38

39
45

13 17

21

26

13 _17
.. -

21

26

-

CL=50pF

tpHL

t------------------ ---

Maximum Propagation Delay.
CLR to Q'A or Q'H

tpHL

1-----

Maximum Propagation Delay.
ClK to QA thru QH

,/

tpLH

CL=50pF
CL=150pF

tpHL

CL=50pF
CL=150pF

-

--I-

CL=50pF
CL =150pF
- - .------.--t-CL=50pF
tPZH
Maxi!!!um Output Enable Time. _._--_._-- RL = 1 kG CL=150pF
G1. G2. to QA thruQH
CL =50pF
tPZL
CL=150pF
- - - ---_._-"
-tpHZ
Maximum Output Disable Time. _._RL = 1 kG
<31. <32 to QA thru QH
CL=50pF
tpLZ
- -.... -..
...--_. - - --ClK High or low
Minimum
tw
Pulse
Width CLR low
. - _... _._.- - ..
-----SO and S1
Minimum
High-level Inputs
tsu
Setup time
High-level Inputs
before ClKt
ClR Inactive
- - - - - _.. _-_.._ - - -

--~-.-----.---

-

----.--.-.-~----

rd

- --------- -

-- -

-

--

-

--"-

th

All Inputs

---- -

.

-----

MaXimum Input Capacitance

-------------- -

-----_._.•. _ - - - - -

1------

c---

---

10 13

17

20

17

20

13 17

21

25

10 13
...

17

20

17

20

--..

--~-

------

10 13

.

----

--

.-------

10 13

-----~

10 13
~~

f---

- .------

.

5

7
--,--.

0

a--

f--

_10
.. -

-----

- - - - - ~-

---------

--_

---.---_._------ ---

CpD

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee'
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

17
_--- ------8

-_.-

..

0

.

5

CIN

__ __

Maximum
Output . Capacitance
Output Disabled
---_... _-_._. ---_ ...
. _ - - - - -COUT
- - -- - - - - - - - - - - - - Power Dissipation Capacitance *

- -f----

--------~--.-.-----

---------- - - - - -

SO and S1

T;me
after CLKt

-~-

-~

~---

Minimum

tpHL

-----

-~---

ns
ns

1--

-----.-~-----

Maximum Propagation Delay.
ClR to Qa thru QH

MHz

.. _--

ns

ns

ns

ns
---

ns

ns

20
10

ns

0
pF
pF
pF

fin.

646

KS54HCTLS
KS74HCTLS

322A.

8-Bit Shift Registers
with Sign Extend

FEATURES

DESCRIPTION

• Multiplexed inputs/outputs provide improved bit
density
• Sign extend function
• Direct overriding clear
• 3 state outputs drive bus lines directly
• Function pin-out, speed and drive compatibility with
54174 LS logic family
• Low power consumption characteristic of CMOS
• High drive current output
(loL=24mA @ VOL=O.5V) for for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices.
• Wide Operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and military
temperature range:
KS74HCTLS : -40°C to +85°
KS54HCTLS : -55°C to +125°
• Package options include plastic "small outline"
packages, standard plastic and ceramic 300-mil DIPs

These B bit Shift registers have multiplexed input/output
data ports to accomplish full B-bit data handling in a single
20-pin package. Serial data may enter the sHtt-right register
through either Do or 01 input as selected by the data
select pin. A serial oytput is also provided. Synchronous
parallel loading is achieved by taking the register enable
and the SIP inputs low. This places the three-state input/output ports in the data input mode. Data are entered
on the low-to-high clock transition. The data extend function repeats the sign in the QA flip flop during shifting. An
overriding clear input clears the internal register when taken
low whether the outputs are enabled or off. The output
enable does not affect synchronous operation of the
register.

,I

PIN CONFIGURATION

Register
enable
SIP

Do

Sigh extend (SE)

A/O,

0,

C/O e

BlOB

E/O E

D/O D

G/OG
Output
enable

FlO,
H/OH

Clear

OH'

GND

Clock

c8SAMSUNG
• Electronics

Vee

Data select (OS)

647

KS54HCTLS 3.1~" A
KS74HCTLS. ~~11

8-Bit Shift Registers
with Sign Extend

FUNCTION TABLE
INPUT

"SIgn

Clear

Register
enable

SIP

L
L

H
X

X
H

Hold

H

H

Shift Right

H
H

L
L

Sign Extend

H

L

H

L

Load

H

L

L

X

OPERATION
Clear

INPUT/OUTPUTS

extend

Data
select

Output
enable

Clock

A/QA

B/QB

X
X

X
X

L
L

X
X

L
L

L
L

L
L

L
L

L
L

X

X

X

L

X

QAO

QBO

Qco

QHO

QHO

H
H

H
H

L
H

L
L

t
t

Do
01

QAn
QAn

QBn
QBn

QGn
QGN

QGn
QGn

X

L

t

QAn

QAn

QBn

QGn

QGn

X

X

t

a

b

c

h

h

C/Qc --- H/QH

Output
QH'

When the output enable is high, the eight input/output terminals are disabled to the high-impedance state: however,
sequential operation or clearing of the register is not affected. If both the register enable input and the SIP input are
low while the clear input is low, the register is cleared while the eight input/output terminals are disabled to the highimpedance state.
H== high level (steady state)
L= low level (steady state)
X= irrelevant (any inputs, including transitions)
t = transition from low to high level
QAo ... OHo= the level of QA through QH, respectively, before the indicated steady-state conditions were established.
QAn ... OHn= the level of QA through QH, respectively, before the most recent t transition of the clock.
Do, D1 = the level of steady-state inputs at inputs Do and D1 respectively
a... h= the level of steady-state inputs at input A through H respectively.

LOGIC DIAGRAM
REGISTER (1)
ENABLE

G

OUTPUT (8)

ENABLE
DE

-------- Vee +0.5V) .... , ±20 r
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0.5V) .... ±20 mA
Continuous Output Current Per Pin. 10
(-0.5V < Vo < Vee +0.5V) ....... , ±35 mA
Continuous Current Through
Vee or GND pins . . . . . . . . . . . . . . .. ± 125 mA
Storage Temperature Range, Tsto ... -65°C to +150°C
Power Dissipation Per Package. Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage. Vee .............. 4.5V to 5.5V
DC Input & Output Voltages * • V,N. VOUT . . OV to Vcc
Operating Temperature
.
Range
KS74AHCT: -40°C to +85°C
KS54AHCT: -55°C to +125°C
Input Rise & Fall Times. tr • tt ......... Max 500 ns

* Unused inputs must always be tied to an appropriate logic

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not im~ied. Long exposiJre to these conditions may affect device reliability.

voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 1 0% Unless Otherwise Specified)

T.=25°C

Symbol Test Conditions

Typ

KS54AHCT
KS74AHCT
T.= -40°C to +85°C T.= - 55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

V,H

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V,L

0.8

0.8

. 0.8

V

Minimum High-Level
Output Voltage

VOH

V,N=V,H or V,L
lo=-20,.,A
lo=-4mA

Vee -0.1.
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

V,N=V,H or V,L
10=20,.,A
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

,.,A

Maximum Quiescent
Supply Current

lee

V'N=Vee or GND
lOUT = O,.,A

8.0

80.0

160.0

~.

2.7

2.9

3.0

rnA

1---'

Additional Worst
Case Supply
Current

per input in
V,=2.4V
~Iec other Inputs:
at Vee or GND
louT=O,.,A

c8SAMSUNG
• Electronics

Vee Vee -0.1
4.2
3.98
0

649

I

KS54HCTLS
KS74HCTLS

322A

8-Bit Shift Registers
with Sign Extend

AC ELECTRICAL CHARACTERISTICS
. Symbol

Characteristic

Condltlons t

(Input t"
TA=25°C
Vcc=5.0V

t,~6 ns), HCTLS322A
KS74HCTLS
KS54HCTLS
TA= -40°C to +85°C TA= -55°C to +12SoC
Unit
Vee = S.OV ± 10%
Vcc=S.OV± 10%

Typ

Maximum Clock Frequency
Maximum Propagation
Delay, Clock to QH I

f max

40

30

25

20

~

22

33

41

50

tpLH

22

33

41

50

27

35

44

53

Maximum Propagation
Delay, Clear to QH'

tPHL

Maximum Propagation
Delay, Clock to QA-QH

~

22

33

41

50

16

25

31

38

tpHL

22

35

44

53

~

15

35

44

53

15

35

44

53

tPZL

Clock Pulse
Width

I High

ILow

RL=1 kO
CL=50pF

15

25

31

38

tpu

15

25

31

38

tw

12

16

20

24

tw

12

16

20

24

~

Output Disable Time

CL=50pF

tpLH

Propagation Delay
Clear to QA-QH
Output Enable Time

#

Guaranleed Limits

Clear Pulse Width Low

tw

12

16

20

24

Minimum Data Set up Time

ts

13

16

20

25

Minimum Select Set up Time

ts

13

16

20

25

Minimum Data Hold Time

th

-3

0

0

0

Minimum Select Hold Time

th

7

10

12

15

20

25

30

Minimum Recovery Time

tree

15

Maximum Input Capacitance

Cin

5

Power Dissipation Capacitance

CPD

100

* CPD determines the no-load dynamic power dissipation: PD=CPD Vcc 2 f
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

MHz
ns
ns
ns
ns
ns
ns.
ns
ns
ns
ns
ns
pF
pF

+

Icc Vce.

650

KS54AHCT
KS74AHCT

352

Dual 4-Line to 1-Line Data
Selectors/Multiplexers

FEATURES

DESCRIPTION

• Inverting Version of '153
• Permits Multiplexing from N Lines t01 Line
• Performs Parallel-tOoSerial Conversion
Strobe (Enable) Line Provided for Cascading
(N Lines to n Lines)
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
(loL =24 mA @ VOL =O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to +85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

Each of these data selectors/multiplexers contains inverters
and drivers to supply fully complementary binary decoding
data selection to the AND-OR-invert gates. Separate strobe
inputs (G) are provided for each of the two four-line
sections.

PIN CONFIGURATION

LOGIC DIAGRAM

1<3

Vee

B

2G

lC3

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

2C3

1Cl
1CO

2C2
2C1

lY

2CO

GND

I

CD 161

A

1C2

'
I

1 _ _ _ _ _-+-++4-4.-/
lCl....:;15:c..

DATA 1

lC2 --'14""-1_ _ _ _---+-+-t--+-t---l.----./

2Y

lC3--'13-'-1--_ _--f-+-+-+---L---/

SELECT [

,'"

FUNCTION TABLE
" 1141

SELECT

B

A

X
L
L
L
L
H
H
H
H

X
L
L
H
H
L
L
·H
H

DATA INPUTS

STROBE

CO C1 C2 C3

G

y

H
L
L
L
L
L
L
L
L

H
H
L
H
L
H
L
H
L

X
L
H
X
X
X
X
X
X

X
X
X
L
H
X
X
X
X

X
X
X
X
X
L
H
X
X

X
X
X
X
X
X
X.
L
H

2CD 1101

OUTPUT

2Cl 1111

uATA 2

2C2....:.ll""21C-.------l;:::j:==:t:l~1

1

----t=l===+=:r""l

2C3--,1.;..;;13,-1

26 (151

Select inputs A and B are common to both sections.

c8SAMSUNG
Electronics

651

KS54HCTLS
KS74HCTLS

352,

Dual 4-Line to 1-Line Data
Selectors/Multiplexers

Absolute Maximum Ratings·

o

Supply Voltage Range Vcc,
. -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI> Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±70 mA
Continuous Current Through
Vcc or GND pins. . . . . .
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vcc
Operating Temperature
·KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V+10%
Unless Otherwise Specified)
-

Ta=25°C

Test Conditions

Typ

I

I

KS74HCTLS
:
KS54HCTlS
T8 = -40°C to +85°C T8 = -55°C to + 125°C Unit
Guaranteed limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20j../A
10- 6mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20J-tA
10=12mA
'0 24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

J-tA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

j../A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.6.lcc

VIN=VCC or GND
10UT-0J-tA
per input pin
Vi=2.4V
other Inputs:
at Vcc or GND
10UT-0J-tA

c8SA~SUNG
ElectrOnics

Vcc Vcc -0.1
4.2
3.98
0

652

KS54HCTLS
KS74HCTLS

352

Dual 4-Line to 1-Line Data
Selectors/Multiplexers

AC ELECTRICAL CHARACTERISTICS
Symbol

Characteristic

(Input t r • t,.t;;6 ns). HCTLS352
T.=25°C
Vee=5.0V

Conditions!

KS74HCTLS
KS54HCTLS
T.= -40°C to +85°C T.= -55°C to ~125°C
Vce=5.0V:t 10%
Vee = 5.0V:t 10%

Typ

tpLH
Maximum Propagation Delay.
A or B to Y
1-------

----

Maximum Propagation Delay.
Data (Any C) to Y
f-------------

-

f-----

tpHL
1-----

tpLH
---

-----

Power Dissipation Capacitance *

-

CL=50pF
CL =150pF

30
33

38
43

45
51

23
26

30
33

38
43

45
51

19
21

26
29

32
37

39
45

32
37
_ .. _------

39
45

C-----

I

CL=50pF
CL =150pF
CL=50pF
CL =150pF

19
21

26
29

tpLH

CL=50pF
CL =150pF

19
21

26
29

~-

-- ------

-"

f-------

tpHL
-------

---

Guaranteed Limits

23
26

tpHL

Maximum Propagation Delay.
G to Y
,Maximum Input Capacitance

CL=50pF
CL =150pF
f------- - - - -

---

CIN

-----

CL=50pF
CL =150pF

----- --------

f---

-

--

~

32
37

39
45

32
37

39
45

---

19
21

- - - 1-----

Unit

26
29
5

f----t-

CPD

---"-----

ns

ns

~~

pF
---

pF

• CPD determines the no-load dynamic power dissipation: PD=CPD Vee l fin
t For AC switching test circuits and timing waveforms see section 2.

I

=8SAMSUNG
Electronics

653

353

KS54HCTLS
KS7·4HCTLS

Dual 1-01-4 Data' Selectors/Multiplexers
with 3-State Outputs'

FEATURES

DESCRIPTION

•
•
•
•

Each of these data selectors/multiplexers contains inverters
and drivers to supply full binary decoding data selection
to the AND-OR-invert gates. Separate strobe inputs (<3) are
provided for each of the two four-line sections.

•
•
•
•
•

Inverting Version of '253
Permits Multiplexing from N lines to 1 line
Performs Parallel-to-Serial Conversion
Function, pin-out, speed and drive compatibility with
54174LS logic family
Low power consumption characteristic of CMOS
3-State outputs with high drive current
(IOL 24 rnA @ VOL O.5V) for direct bus interface
Inputs and outputs interface directly with TTL, NMOS
and CMOS deviceS'
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to + 125°C

=

=

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

The three-state outputs can interface with and drive data
lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state) the lowimpedance of the Single enabled output will drive the bus
line to a high or low logic level. Each output has its own
strobe (G). The output is disabled when its strobe is high.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage 9ue to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAM
STROBE

1G (11

ENABLE

lG

Vee

B

2G

lC3

A

lC2

2C3

lCl

2C2

lCO

2Cl

lY

2CO

1CO...:;16:.:..1_ _ _ _ _ _-+-+-1~_

1C1 151
OUTPUT
1Y

1C2-'(4::!..1-------f-+-+-HH..-/

2Y

GND

1C3 (31

B 121

FUNCTION TABLE
A (141

SELECT

DATA INPUTS

OUTPUT
CONTROL

OUTPUT

2CO 1101

CO C1 C2 C3

G

y

2C1 1111

H

Z

L
L
L
L
L
L
L
L

H

B

A

X

X

X

L
L
L
L

L
L

L

H
H
H
H

H
H
L
L

H
H

H
X
X
X
X
X
X

X
X
X

X

H

X
X
X
X

X

L

X
X
X

H
X
X

L

X
X
X
X
X
X
X
L

H

2C2 1121

L

H

2C3 (131

L

H
L

STROBE _ (151
ENABLE 2G

H
L

Select inputs A and B are common to both sections.

c8SAMSUNG
Electronics

654

KS54HCTLS
KS74HCTLS

353

Dual 1-01-4 Data Selectors/Multiplexers
with 3-State Outputs

Absolute Maximum Ra.tings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu-rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V) .
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages*, VIN, VOUT
OV to Vee
Operating Temperature
·KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an ap:->ropriate logic
voltage level (either Vec or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vec=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

I

KS74HCTlS

KS54HCTlS

Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2_0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

f---

VOH

VIN=VIH or VIL
lo=-20/AA
" = -6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2O/AA
lo=12mA
lo-24mA

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/AA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

/AA

8.0

80.0

160.0

/AA

2.7

2.9

3.0

mA

Minimum High-Level
Output Voltage
I---

'----

Maximum Quiescent
Supply Current
f------'-------Additional Worst
Case Supply
Current

Icc

L1lee

VIN=Vee or GND
IOUT-O/AA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
.IOUT=O/AA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

655

I

Dual. 1-0'-4 Data Se/flctOlslMuUiplexers
with 3-State Outputs
.J.

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input t r , tf~6 ns), HCTLS353
KS74HCTLS
KS54HCTLS
T. =25°C T = -400C to +85°C T = -55°C to +125°C
Unit
Vcc-50V
• Vcc=5.0V::t10%
• Vcc=5.0V::t 10%
.

--

Typ

tpLH

24 32
27 35

40
45

48
54

tpHL

CL=50pF
CL =150pF

24 32
27 35

40
45

48
54

tpLH

CL=50pF
CL=150pF

15 20
18 23

25
30

30
36

tpHL

CL=50pF
CL=150pF

15 20
18 23

26
31

31
37

CL=50pF
17 23
CL=150pF 20 26

29
34

35
41

CL=50pF
17 23
CL=150pF 20 26

29
34

35
41

20 27

34

41

20 27

34

41

Maximum Propagation Delay,
A or B to Any Y

Maximum Propagation Delay,
Data (any C) to any Y

Maxim)!m Output Enable
Time, G to Y

tPZH
f---

RL=1 kO

tPZL
Maximum Output Disable
Time, G to Y
Maximum Input Capacitance

~
tpLZ
CIN

Maximum Output Capacitance COUT
Power Dissipation
Capacitance *

Guaranteed limits

CL=50pF
CL=150pF

RL=1 kO
CL=50pF

5
10

Cpo

ns

ns

ns

ns
pF
pF
pF

* Cpo determines the no-load dynamic power dissipation: PO=CPD VCC 2 fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMS.UNG
Electronics

656

KS54HCTLS
KS74HCTLS

365AI366A
367AI368A

~ Hex Bus-Drivers
~ 3-State Outputs

with

DESCRIPTION

FEATURES
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL = 24 rnA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These high-speed Hex bus drivers are designed specificaliy
to improve both the performance and denSity of 3-state
memory address drivers, clock drivers, and bus oriented
receivers and transmitters .
The '365 and '366 have two output enables (G1 and G2)
NOR'ed together to control all six gates. The '367 and
'368 have two output enables which are configured so that
one enable (G1) controls four gates and the other (G2) controls the remaining two gates. The '366 and '368 have inverting data paths. The '365 and '367 have noninverting
data paths.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

FUNCTION TABLES

PIN CONFIGURATION

Vee

A1

G2

f---

G1

A6
Y6
Y2

AS

A3

YS

Y3

A4

GND

Y4

Inputs

Y Outputs

Inputs

-~---

<32

A '365

I

'367 and '368

'365 and '366
<31

01

'366

L
L
H

L
L

L
H

L
H

H
L

X

X

H

X
X

Z
Z

Z
Z

----

L
L
H

Y Outputs
------~~--

'367

'368

L
H

L
H

H
L

X

Z

Z

& <32 A

LOGIC DIAGRAMS
'365
A1

Y1

Y1

Y2

Y2

Y3

Y3

Y4

-------'---' ....."'"'---Y4

YS

YS
Y6

Y6
<31

(1)

G2

G2

(lS)

c8SAMSUNG
Electronics

'368
Yl

Yl

----.-. __- - - -Y2

"'-J--

Y2

Y3

- - t · U I Q - - - Y3

>-_ _ Y4

_ - , - , __. . . , - - - Y4

YS

- - , - - , - , ~.r-- Y5

L .......- - - -

--,---r-ol ___, , - - -

Y6

Y6

Gl

G1-~---"

(lS)

'367

'366

657

KS54HCTLS
KS74HCTLS

365A/366A
36'7A/368A

Hex Bus-Drivers with
3-State Outputs

Absolute Maximum Ratings·
Supply Voltage Range Vee.
-0.5V to + 7V
DC Input Diode Current. hK
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current. 10K
(Va < -0.5V or Vo > Vee +0.5V)
±20 rnA
Continuous Output Current Per Pin. 10
(-O.5V < Vo < Vee +0.5V)
±70 rnA
Continuous Current Through
Vee or GND pins. .
±250 rnA
StorageTernperature Range. TSlg ... -65°C to +150o~
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vee
4.5V to 5.5V
DC Input & Output Voltages". VIN, VOUT .. OV to Vee
Operating Temperature
Range
-KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times. tr • tf
Max ·500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V± 1 0% Unless Otherwise Specified)

_~~74HCTLS

~=250C_

KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20J.lA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20J.lA
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

J.lA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

IJ.A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

J.lA
--

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

61ee

VIN=Vee or GND
10uT=OJ.lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND.
10uT=OJ.lA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

658

KS54HCTLS
KS74HCTLS

365A/366A
367A/368A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

Hex Bus-Drivers with
3-State Outputs

(Input t r , tf~6 ns), HCTLS365A, HCTLS367 A
KS74HCTLS
KS54HCTLS
T. =25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vee=5.0V
Vee =5.0V:t: 10%
Vee=5.0V:t: 10%
Typ

tpLH

14 19
17 22

24
29

28
34

tpHL

CL =50pF
CL=150pF

14 19
17 22

24
29

28
34

CL=50pF
26 35
CL =150pF 29 38

44
49

52
58

CL=50pF
26 35
CL=150pF 29 38

44
49

52
58

26 35

44

52

26 35

44

52

Maximum Propagation Delay,
A to Y

tPZH
Maxim\Lm Output Enable
Time, G to Y

~
Maximum Output Disable

Guaranteed Limits

CL=50pF
CL=150pF

'-------

RL =1 kG

. tPZL
tpHZ
~

Time, G to Y

tpLZ

Maximum Input Capacitance

CIN

RL = 1 kG
CL=50pF

ns

ns

ns

5

pF

Maximum Output Capacitance COUT Output disabled

10

pF

Power Dissipation
Capacitance * (per driver)

5
30

pF

Cpo

G=Vcc
G=GND

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc' fin

t For AC switching test circuits and timing waveforms see section 2.

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input tr , tf~6 ns), HCTLS366A, HCTLS368A
KS74HCTLS
KS54HCTLS
T.=25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vee=5.0V
Vee=5.0V:t:10%
Vee=5.0V:t: 10%
Typ

tpLH

13 17
16 20

21
26

25
31

tPHL

CL=50pF
CL=150pF

13 17
16 20

21
26

25
31

CL=50pF
26 35
CL=150pF 29 38

44
49

52
58

CL=50pF
26 35
CL=150pF 29 38

44
49

52

26 35

44

52

26 35

44

52

Maximum Propagation Delay,
A to Y

tPZH
Maxim\Lm Output Enable
Time, G to Y

f----

RL =1 kG

tPZL
Maximum Output Disable
Time, G to Y

Guaranteed Limits

CL=50pF
CL=150pF

tpHZ

f----

tpLZ

RL = 1 kG
CL=50pF

ns

ns

58
ns

5

pF

Maximum Output Capacitance COUT Output disabled

10

pF

Power Dissipation
Capacitance * (per driver)

5
30

pF

Maximum Input Capacitance

CIN

Cpo

G=Vcc
G=GND

* Cpo determines the no-load dynamic power dissipation: PO=CPD,VCC' fin

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

659

I

KS54HCTLS
KS74HCTLS

373·.

Octal D-Type Transparent Latches
with 3-State Outputs

FEATURES

DESCRIPTION

• 8 latches in a single package
• Full parallel access for loading
• Function, pln-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOl 24 rnA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '373 cons-ists of 8 high-speed Ootype latches coupled to 3-state output buffers with high drive current capability. It can be used in implementing buffer registers, I/O ports,
bidirectional bus drivers and working registers.

=

The latches are transparent: when the enable (E) is high,
the outputs follow the data (0) inputs. When the enable
is low, the outputs latch at the levels that were set up at
the 0 inputs.

a

=

The output buffers are controlled by a common Signal (OC)
which places the outputs at a high-impedance state when
it is taken high. The OC signal does not affect the internal
operations of the latches. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

PIN CONFIGURATION

FUNCTION TABLE

6C

Vee

10
10
20

80
80
70
70
60
60
50
50

20
30
3D
40
40

(Each Latch)
Inputs

E

GNO

Output

OC

E

0

Q

L
L
L
H

H

H
L

H

X
X

00

H
L

X

L

Z

LOGIC DIAGRAM
10

20

10

c8SAMSUNG
-=I __ ..__:-~

3D

40

50

60

7D

80

20

30

40

50

60

70

80

660

KS54HCTLS
KS74HCTLS

373

Octal 0-Type Transparent Latches
with 3..State O.utputs

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -O.SV or VI> Vee +O.SV)
±20 mA
DC Output Diode Current, 10K
(Vo < -O.SV or Vo > Vee +O.SV)
±20 mA
Continuous Output Cu-rrent Per Pin, 10
(-O.SV < Vo < Vee +O.SV)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, TSl9 ... -6SoC to +1S0°C
Power Dissipation Per Package, Pdt
SOO mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 6SoC to 8SoC

Recommended Operating Conditions
Supply Voltage, Vee
4.SV to S.SV
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
KS74HCTLS: -40°C to +8SoC
Range
KSS4HCTLS: -S5°C to +12SoC
Input Rise & Fall Times, t r , tf
Max SOO ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 1 0% Unless Otherwise Specified)

TA=25°C

Test Conditions

KS54HCTLS
KS74HCTLS
TA= -40°C to +85°C TA= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0_33
0.5

OA

V

Minimum High-Level
Output Voltage

VOH

VIN = VIH or VIL
10=-20f.lA
10=-6mA

Maximum Low-Level
Output Voltage

VOL

VIN = VIH or VIL
10=20f.lA
10=12mA
10=24mA

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0'

±1.0

f.lA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vee or GND

±O.S

±5.0

±10.0

f.lA

Maximum Quiescent
Supply Current

Icc

VIN=Vee or GND
10ur=OfAA

8.0

80.0

160.0

fAA

per input pin
Vz=2.4V
Other Inputs:
At Vee or GND
10=0

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

l::.lee

=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

0.1

--t--

661

I

KS54HCTLS
KS74HCTLS

373

OctalD-Type Transparent Latches
with 3-State Output

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Condltlons l

(Input'tr , tl<;6 ns), HCTLS373
KS74HCTLS
KS54HCTLS
T.=25°C T.= -400C to +85°C T.= -55°C to +125°C
Unit
Vee=5.0V
Vee =5.0 V::!: 10%
Vee=5.0V::!: 10%
Typ

Maximum Propagation Delay,
D to Q

tPLH

14 18
17 21

23
28

27
33

tPHL

CL=50pF
CL=150pF

14 18
17 21

23
28

27
33

CL~50pF

CL=150pF

22 30
25 33

37
42

45
51

CL=50pF
CL=150pF

22 30
25 33

37
42

45
51

24 32
CL=50pF
CL =150pF 27 35

40
45

48
54

CL =50pF
24 32
CL=150pF 27 35

40
45

48
54

~

tpLH
Maximum Propagation Delay,
E to any Q

Guaranteed Limits

CL= 50pF
CL""150pF

tpHL

--

tPZH
Maximum Output Enable
Time, OC to any Q

-

Maximum Output Disable
Time, OC to any Q

1----:-

RL=1kO
tpzL
tPHZ
tpLZ

RL=1kO
CL=50pF

19 25

31

37

19 25

31

37

ns

ns

ns

ns

Minimum Pulse Width,
E High

tw

6

10

12

15

ns

Minimum Setup Time,
D before E.

tsu

2

3

4

5

ns

Minimum Hold Time,
D after E.

th

6

10

12

15

ns

--

f-------

f---

Maximum Input Capacitance

10

Power Dissipation
Capacitance * (per latch)

5
30

Cpo

OC=Vcc
OC=GND

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee'
t For AC switching test circuits and timing waveforms see section 2_

c8SAMSUNG
Electronics

pF

5

CIN

Maximum Output Capacitance COUT Output Disabled

-----

pF
pF

fin

662

KS54HCTLS
KS74HCTLS

374

Octal O-Type Flip-Flops
with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(tOl 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '374 consists of 8 high-speed D-type edge-triggered
flip-flops coupled to 3-state output buffers with high drive
current capability. It can be used in implementing buffer
registers, 1/0 ports, bidirectional bus driver and working
registers.

=

=

The flip-flops are edge-triggered on the positive transition
of the clock. The Q outputs are set to the logic levels that
were set up at the D inputs.
The output buffers are controlled by a common signal (OC)
which places the outputs at a high-impedance state when
it is taken high. The OC signal does not affect the internal
operations of the flip-flops. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to their lSTTl counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATION
oc

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.
Vee

10

80
80

10
20
20
30
30
40
40

50

GNO

elK

I

FUNCTION TABLE

70
70

(Each Flip-Flop)

60
60

Output

Inputs

50

OC ClK D
L
L
L
H

t
t

H

L
X

X
X

L

a
H
L
Qo

Z

LOGIC DIAGRAM
10

20

30

40

50

60

7D

80

10

20

30

40

50

60

70

elK

oe

c8SAMSUNG
Electronics

80

663

KS54HCTLS
KS74HCTLS

374:
""." .

Octal D-Type Flip-Flops
with 3-State Outputs

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ....... -O.5V to + 7V
DC Input Diode Current, hK
(VI < -O.5V or VI > Vee +O.5V) . .
±20 mA
DC Output Diode Current, 10K
(Vo< -O.5V or Vo > Vee +0.5V) . .. ±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND p.ins . . .
±250 mA
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee .
. . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
·KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times., t r , tf ..
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

* Absolute Maximum Ratings are those values beyond

whieh permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V±10% Unless OtherwisQ Specified)

Ta =25°C

KS74HCTLS
Ta

= - 40°C to

KS54HCTlS

+ 85°C Ta = - 55°C to + 125°C Unit

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

t:..lee

VIN=Vee or GND
10uT=0,.,A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

---

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

664

KS54HCTLS
KS74HCTLS

374

Octal D-Type Flip-Flops
with 3-State Outputs .~

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input tr , tf~6 ns). HCTlS374

Symbol Conditions t

KS14HCTLS
KS54HCTLS
T. =25°C
T.=-40°Cto +85°C T. =-55°C to +125°C
Unit
Vcc=5.0V
Vec=5.0V:t10%
Vee = 5.0V:t 10%
Typ

Maximum Operating Frequency
Maximum Propagation Delay,
ClK to any Q

Guaranteed limits

f max

CL=50pF

45 35

30

25

tPLH

CL=50pF
CL =150pF

21 28
24 31

35
40

42
48

tpHL

CL=50pF
CL=150pF

21 28
24 31

35
40

42
48

21 28
24 31

35
40

42
48

21 28
CL=50pF
CL=150pF 24 31

35
40

42
48

tPZH
Maximum Output Disable
Time, OC to any Q

r - - RL =1 kG

MaxImum Output Disable
Time, OC to any Q

I--

tPZL
tPHZ
tpLZ

CL=50pF
CL=150pF

RL=1kO
CL=50pF

19 25

31

37

19 25

31

37

MHz

ns

ns

ns

Minimum Pulse Width,
ClK High or low

tw

7 10

12

15

ns

Minimum Setup Time,
D before ClKt

tsu

10 13

17

20

ns

Minimum Hold Time,
Dafter ClKt

th

-3

0

0

ns

Maximum Input Capacitance

0

5

pF

Maximum Output Capacitance COUT Output Disabled

10

pF

Power Dissipation
Capacitance· (per stage)

5
30

pF

CIN

Cpo

OC=Vcc
OC=GND

* CPO determines the no·load dynamiC power dissipation: Po=Cpo VCC 2

fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

665

I

KS54HCTLS
KS74HCTLS

377

Octal O-Type Flip-Flops
with Clock Enable

FEATURES

DESCRIPTION

• Can be used for implementing
- BufferlStorage Registers
- Shift Registers
- Pattern Generators
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10l =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '377 contains eight positive·edge-triggered Ootype flipflops with an enable input. This part is similar to '273 but
features a latched clock enable (<3) instead of a common
clear.
Information at the 0 inputs meeting the setup time reo
quirements is transferred to the 0 outputs on the positivegoing edge of the clock pulse if Gis low. Clock triggering
occurs at a particular voltage level and is not directly related
to the transition time of the positive-going pulse. When the
clock input is at either the high or low level, the 0 input
signal has no effect at the output. The circuits are designed to prevent false clocking by transitioins at the G input.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

PIN CONFIGURATION
FUNCTION TABLE
G

Vee

10
10
20

80

20
30
30
40
40

GNO

(EACH FLIP-FLOP)

80
70
70
60
60
50
50
elK

INPUTS

G

CLK

DATA

OUTPUT
Q

H
L
L

X
t
t

X

00

H
L

H
L

X

L

X

00

LOGIC DIAGRAM

dCSAMSUNG
• • Electronics

666

KS54HCTLS
KS74HCJ"LS

377

Octal D-Type Flip-Flops
with Clock Enable

Absolute Maximum Ratings*
Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vce or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C
f----,--'

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

I1A

VOH

VIN=VIH or VIL
lo=-20/AA
lo=-4mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2O /AA
lo=4mA
10=8mA

Maximum Input
Current

hN

VIN=Vce or GND

Maximum Quiescent
Supply Current

lec

Minimum High-Level
Output Voltage

Additional Worst
Case Supply
Current

Vee Vee -0.1
3.98
4.2
0

_._--

Dolee

VIN=Vee or GND
10UT=0/AA
per input pin
VI=2.4V
other Inputs:
at Vec or GND
10uT=011A

c8SAMSUNG
Electronics

8.0

80.0

160.0

/AA

2.7

2.9

3.0

mA

667

I

KS54HCTLS
KS74HCTLS

377

Octal D-Type Flip-Flops
with Clock Enable

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r , tf~6 ns), HCTlS377

KS74HCTLS
KS54HCTLS
Ta =25°C
T.= -40°C to +85°C T. = -55°C to +125°C
Symbol Condltionst Vcc=5.0V
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Maximum Clock Frequency
Maximum Propagation Delay,
ClK to Any Q
Minimum
Pulse Width

*

t

Glow
ClK high or low

Guaranteed Limits

f max

45 35

30

25

~

18 27

32

38

18 27

32

38

12 16

20

25

12 16

20

25

6 10

15

20

15 20

25

25

0

0

tPHL

tw

Data
Minimum Setup
Time before ClKt G high or lOW

tsu

Minimum Hold Time,
Data after ClKt

th

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

CL=50pF

-3

0

5

Cpo determines the no-load dynamic power dissipation: Po=Cpo Vec 2
For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

MHz
ns
ns
ns
ns
pF
pF

fin.

668

KS54HCTLS
KS74HCTLS

390

Dual 4-Bit Decade Counters

FEATURES

DESCRIPTION

• Individual clock for A and B flip-flops provide dual + 2
and + 5 counters
• Direct clear for each 4-bit counter
• Significant provement in system density through
reduced counter package count.
• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION
Vee
2CKA

These devices incorporate dual divide-by-two and dividefive counters, which can be used to implement cycle
lengths equal to any whole and/or cumulative multiple of
2 and/or 5 up to divide-by-1 00. When conneoted as a biquinary counter, the ~eparate divide-by-two circuit can be
used to provide symmetry (a square ware) at the final outpur stage. The '390 incorporates dual divide-by-two and
divide-by-five counters, which can be used to implement
cycle lengths equal to any whole and/or cumulative
multiples of 2 and/or 5 up to divide-by-1 00. When connected as a bi-quinary counter, the separate divide-by-tow
circuit can be used to provide symmetry (a square wave)
.at the final outpur stage. The '390 has parallel outputs from
each counter stage so that any submultiple of the input
count frequency is available for system-timing signals.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

2CLR
20 A
2CKB
200

lOe
100

20 e

GND

200

FUNCTION TABLES
BIQUINARY (5-2)
( Each Counter)
(See Note B)

BCD COUNT SEQUENCE
( Each Counter)
(~ee Note A)
OUTPUT

COUNT
0
1
2

3
4

5
6
7
8
9

OUTPUT

COUNT

Qo

Qc

QB

QA

L
L
L
L
L
L
L
L
H
H

L
L
L
L
H
H
H
H
L
L

L
L
H
H
L
L
H
H
L
L

L
H
L
H
L
H
L
H
L
H

0
1
2

3
4
5
6
7
8
9

Qo

Qc

Qs

QA

L
L
L
L
L
H
H
H
H
H

L
L
L
L
H
L
L
L
L
H

L
L
H
H
L
L
L
H
H
L

L
H
L
H
L
L
H
L
H
L

NOTES A. Output QA is connected to input CKB for BCD count.
B. Output QD is connected to input CKA for biquinary count.

c8SAMSUNG.
Electronics

669

I

KS54HCTLS
KS74HCTLS

390

Dua/4-Blt Decade Counters

LOGIC DIAGRAM

CKA

(1.15)

CLEAR

Oe (5. 11) Oe
CKB~~·_12~)+-____________~~~

Absolute Maximum Ratings·
Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vce +0.5V)
±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Vo > Vce +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vec +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
±125 mA
Storage Temperature Range, T5 1g ..• -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

=8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

670

KS54HCTLS
KS74HCTLS

390

Dual 4-Bit Decade Counters

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

Test Conditions

KS54HCTLS
KS74HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20jiA
lo=-4mA

Vce -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2O/lA
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vce or GND

±0.1

±1.0

±1.0

/lA

Maximum Quiescent
Supply Current

lec

8.0

80.0

160.0

/lA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

!llee

VIN=VCC or GND
louT=O/l~ __
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
louT=O/lA

Vee Vcc -0.1
4.2
3.98
0

AC ELECTRICAL CHARACTERISTICS
Characteristic

(Input t r , tf~6 ns), HCTLS390

KS74HCTLS
KS54HCTLS
Ta =25°C
Ta= -40°C to +85°C Ta=-55°C to +125°C
Symbol Conditions t Vcc=5.0V
Unit
Vcc=5.0V:!:10%
Vcc=5.0V:!: 10%
Typ

Maximum Clock Frequency
CKA to QA or CKB to QB

*

t

Guaranteed Limits

f max

35

25

20

20

tpLH

15 20

25

30

tpHL

15 20

25

30

tpLH

36 48

60

72

tpHL

36 48

60

72

Maximum Propagation Delay,
CKA to QA

I---

Maximum Propagation Delay,
CKA to Qc

I---

Maximum Propagation Delay,
CKB to QB

I---

Maximum Propagation Delay,
CKB to Qc

I---

Maximum Propagation Delay,
CKB to QD

I---

tpHL

Maximum Propagation Delay,
CLR to Any Q

tpHL

16 21

26

31

tpHL

16 21

26

31

tpLH

24 32

40

48

tpHL

24 32

40

48

16 21

26

31

16 21

26

31

24 32

40

48

12 16

20

24

12

16

20

24

15 20

25

30

tpLH

tpLH

ICKA or CKB high or low
Minimum
Pulse Width I CLR high

tsa

Minimum Setup Time,
CLR inactive before CKA or CKB

tsu

Maximum Input Capacitance

CIN

Power Dissipation Capocitance

CpD

CL =50pF

r-----r-

5

MHz
ns
ns
ns
ns
ns
ns
ns
ns
pF
pF

CPD determines the no-load dynamic power dissipation: Po=Cpo VCC' fin.
For AC switching test circuits and timing waveforms see section 2.

dCSAMSUNG
• • Electronics

671

I

KS54HCTLS 3";·.~
KS74HCTLS ,.!~,.

,

Dual4~bit

Binary Counters

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54[74LS logic family
• Low power consl,lmption characteristic of CMOS
• High-Drive-Current outputs:
IOL =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '393 consists of two independent 4·bit binary counters
each with its own clear and clock inputs. N-bit binary
counters can be implemented with each package providing
the capability of divide-by-256. Parallel outputs from each
counter stage provide any submultiple of the input count
frequency for system timing Signals.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

LOGIC DIAGRAMS
PIN CONFIGURATION
CLK

-~----i"

Vee

lCLK
1 CLR

2CLK

lOA

2CLR

10e

20A

10e

20e

lao

20e

GNO

200

as

Qc

LOGIC TIMING WAVEFORMS

I

0

I

1

I

2

I

3

I

4

I

5

I

6

I

7

I

8

I

9

I

10

I

11

I

12

I

13

I

14

I

15

I

0

I

CLK

CLR

Jl__________________________________________

OA

08

J

Oe

J

aD

]

c8SAMSUNG
Electronics

L
L
L
672

KS54HCTLs
KS74HCTLS

393

Dual 4-bit Binary Counters

Absolute Maximum Ratings *
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±35 mA
Continuous Current Through
Vee or GND pins
± 125 mA
. Storage Temperature Range, T5 tg . . . -65°C to +150°C
Power Dissipation Per Package, Pdt. . . .
500 mW

Recommended Operating Conditions
Supply Voltage, Vcc
.......... 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf ....
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS

(Vee=5V± 1 0% Unless Otherwise Specified)

~.

Characteristic

Symbol

Ta =25°C

Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta =-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
lo=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

±0.1

±1.0

±1.0

",A

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Maximum Quiescent
~y Current
Additional Worst
Case Supply
Current

lee

.6.lee

Vee Vee -0.1
4.2
3.98
0

VIN=Vee or GND
VIN=Vee or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

c8SAMSUNG
Electronics

!

673

I

KS54HCTLS
KS74HCTLS

393

Dual 4-bit Binary Counters

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input tr , tf~6 ns), HCTlS393
KS74HCTLS
KS54HCTLS
T. =25°C
T.=-40°Cto +85°C T. = -55°C to +125°C
Vcc=5.0V
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

Guaranteed Limits

Maximum Clock Frequency

f max

40 30

25

20

Maximum Propagation Delay,
A to QA

tpLH

15 20

25

30

;------

tpHL

15 20

25

30

Maximum Propagation Delay,
A to Qs

-

tPLH

26 35

44

53

tpHL

26 35

44

53

CL=50pF

Maximum Propagation Delay,
A to Qc

~

34 45

56

67

tpHL

34 45

56

67

Maximum Propagation Delay,
A to Qo

~

45 60

75

90

tpHL

45 60

75

90

Maximum Propagation Delay,
ClR to any Q

tpHL

29 39

49

58

I

Minimum Pulse A Input High or low
Width
IClR High

tw

Minimum Hold Time,
ClR Inactive before A

tsu

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

(per counter)

10 13

17

20

10 13

17

20

10 13

17

20

MHz
ns
ns
ns
ns
ns
ns
ns

5

pF

40

pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

674

KS54HCTLS
KS74HCTLS

399
.

Quad 2-Port Registers

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Driv.current outputs:
IOL =8 rnA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These are high-speed quad 2-port registers. They are the
logical equivalent of a quad 2-input multiplexer followed by
a quad 4-bit edge-triggered register. A common select input (SELl selects between two 4-bit input ports. The
selected data is transferred to the output register on the
low-to-high transition of the clock input.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

FUNCTION TABLE

Inputs

Output

SEL

Vee

OA

OD

SEL

Port 1

Port 2

1A

10
20

I

I

X

L

28

2C

I

h

X

H

18

1C

h

X

I

L

h

X

h

H

2A

Os

GNO

Q

Oe

ClK

I
h

c8~SUNG

= Low Voltage Level one setup time prior to the low-to-high

=

clock transition
High Voltage Level one setup time prior to the low-to-high
clock transition

675

I

KS,54HCTLS399
KS74HCTLS

Quad 2-Port Registers

LOGIC DIAGRAM

CLK~(9~)

____________________~

Absolute Maximum Ratings·
Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, hK
(V, < -0.5V or V, > Vee +0.5V) ... " ±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Va > Vcc +0.5V) .... ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vce +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins ................ ±125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW
.. Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
'
EI~Qtronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages", V'N, VOUT .. OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55 ° C to + 1 25 ° C
Input Rise & Fall Times, tr • tf
.. Max 500 ns
Unused inputs must always be tied to
voltage level (either Vce or GND)

an appropriate logic

676

KS54HCTLS
KS74HCTLS

39.9

Quad 2-Port Registers

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V±10% Unless Otherwise Specified)

't.=25°C

Symbol Test Conditions

KS74HCTLS
KS54HCTLS
T.= -40°C to +85°C T.= -55°C ~o +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20",A
lo=-4mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20",A
lo=4mA
lo=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

t:..lee

Vee Vee -0.1
3.98
4.2

0

VIN=Vee or GND
louT=O",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
louT=O",A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

Ta =25°C
Vcc=5.0V

KS74HCTLS
Ta= -40°C to +85°C
Vcc=5.0V±10%

Typ

Guaranteed Limits

45

tPHL

22 30

37

45

tw

10 13

17

20

CL=50pF

Unit

.•

37

r-----

Minimum Pulse Width,

KS54HCTLS
Ta= -55°C to +125°C
Vcc=5.0V± 10%

22 30

tpLH

Propagation Delay,
, CLK to Q or Q

I

(Input tr , tf~6 ns), HCTLS399

ns
ns

CLK High or Low
Data

Minimum Setup
Time.before CLKt

Word Select

Minimum Hold
Time after CLKt

Word Select

Data

Maximum Input Capacitance

tsu
th
CIN

10 13

17

20

10 13

17

20

-3

0

0

0

-3

0

0

0

c8SAMSUNG
Electronics

I'IS

pF

5

pF

Power Dissipation Capacitance *

Cpo
* Cpo determines the no-load dynamic power dissipation: PO=CPD Vee'
t For AC switching test circuits and timing waveforms see section 2.

ns

fin.

677

KSS4HCTLS
KS74HCTLS

423

Dual,Retriggerable'Monostable '
Mullivibrator wlth,j'Clear
" "

FEATURES

DESCRIPTION

• Simple pulse width formula tw = 0.45RC
• DC triggered from active HIGH or active Low Inputs
• Retrlggerable for very long output pulses up to 100 %
duty cycle
• Overriding clear terminates output pulse
• SchmlH trigger A & B Inputs allow infinite rise and
fall times on these Inputs
• Functions, plrH)ut, speed and drive compatlvllity with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High drive current outputs:
IOL=8mA @ VOL=0.5V
• Inputs and outputs Interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range; 4.5V to 5.5V
• Characterized for operation over industrial and
rnilitary temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C

The '423 contains dual retrigg~rable monostable,
mUltivibrators with output pulsewidth control by two
methods. The basic pulse time is programmed by selec·
tion of an external resistor (REXT) and capacitor (CEXT). The
external reSistor and capacitor are normally connected as
shown timing component.
Once triggered, the basic output pulse width may be extended by retriggering the gated active Low-going edge
input (Ai) or the active High-going edge input (8i). 8y
repeating this process, the output pulse period (nQ=HIGH,
nQ=LOW) can be made as long as desired.
Pulse width stability over a wide range of temperature and
supply is achieved using linear CMOS techniques.
The output pulse equation is simply;
tw=O.45XREXTXCEXT(typ).
Where tw is in seconds. R is in ohm. and C is in fards.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATION

FUNCTION TABLE
Inputs

, A1
81

CLR1
0"1
02
C exT2
ReXT2/CeXT

Vee
RexTl/CeXT

C exTI
01

0"2
-ei:R2

A

B

Q

Q

L
X
X
H
H

X
H
X
L
+

X
X
L
t
H

L
L
L

n..

H
H
H

1S

...f1.

1S

82

A2

c8SAMSUNG
Electronics

Outputs

CLR

H=
L=
X=
t=
+=
Jl.=
"l..f=

HIGH voltage level
LOW voltage level
don't care
LOW to HIGH transition
HIGH to LOW transition
one HIGH level output pulse
one LOW level output pulse

678

KS54HCTLS
KS74HCTLS

423

Dual Retriggerable Monostable
Multivibrator with Clear

Absolute Maximum Ratings*
t Power Dissipation temperature derating:

Supply Voltage Range Vee, .... , .......... -0.5V to +7V
DC Input Diode Current, hK
(VI<-0.5V or VI>Vee+0.5V) ................. ±20 mA
DC Output Diode Current, 10k
(Vo<-0.5V or Vo>Vee+0.5V) ............... ±20 mA
Continuous OUtput Current Per Pin, 10
(-0.5V--+-""-Yl
>--~:L..Y2

A3

__--.--Y3

A4

>--+~Y4

>--j-!-!-!.l..Y5
__- - . - - Y 6

__--.--Y7

AS

>--....!..!.!.L-Y6

=8SAMSUNG
Electronics

, 681

I

·

'4651466
68'

Octa/Buffers and Line Drivers
with 3-8tate Outputs'

KS54.HCTLS '46',' '7/, A,'
KS74HCTLS '. ,1/""

, Absolute Maximum Ratings*
Supply Voltage Range Vcc, : ...... -0.5V to + 7V
DC, Input Diode Current, irK
(VI < -0.5V or VI > Vcc +0.5V) . . . .. ±20 mA
DC Output Diode Current, 10K
(Vo <-0.5Vor Vo > Vcc +0.5V) .... ±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vcc +0.5V) ......... ±70 mA
Continuous Current-Through
Vcc or GND pins ................ ±250 mA
Storage Temperature Range, T5 1g . . . -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

Recommended Operating Conditions
Supply Voltage, Vcc .............. 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vcc
Operating Temperature
Range
·KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55 ° C to + 1 25 ° C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V±10% Unless Otherwise Specified)

T8 =25°C
Typ

KS74HCTLS
KS54HCTLS
T8= -40°C to +85°C T8= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

Vee -0.1
3.84

Vce -0.1
3.7

V

VIN=VIH or VIL
10=-20~A

10= -6mA

Vcc Vce -0.1
4.2
3.98

VIN=VIH or VIL
Maximum Low-Level
Output Voltage

VOL

Maximum Input
Current

10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

liN

VIN=Vec or GND

±0.1

±1.0

±1.0

~A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

~A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

~A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Iee

10=20~A

VIN=Vec or GND
10uT=0~A

per input pin
VI=2.4V
other Inputs:
at Vee or GND

0

10uT=0~A

c8SAMSUNG
Electronics

682

KS54HCTLS
KS74HCTLS

4651466
4671468

AC ELECTRICAL CHARACTERISTICS

Octal Buffers and Line Drivers"
with 3-State Outputs
tf~6 ns), HCTLS465, HCTLS466,

(Input t r ,

HCTLS467, HCTLS468

Characteristic

54174ACHT
KS74HCTLS
54HCTLS
T.=25°C T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5V%10%
Vcc=5.0V% 10%
Vcc=5V

Symbol Conditions

Typ

Maximum Propagation Delay,
A to Y

Maximum Output Enable Time,
Enable to Y

tpLH

11
14

15
18

19
24

22
28

tpHL

CL=50pF
CL =150pF

11
14

15
18

19
24

22
28

CL=50pF
CL=150pF

24
27

32
35

40
45

48
54

CL=50pF
CL =150pF

24
27

32
35

40
45

48
54

24

32

40

48

24

32

40

48

tPZH
RL=1kO
tPZL

Maximum Output disable Time, tpHZ RL=1kO
r-------Enable to Y
tpLZ CL=50pF
Maximum Input Capacitance

Guaranteed Limits

CL=50pF
CL=150pF

CIN

Maximum Output Capacitance COUT Output Disabled
Output Disabled
Power Dissipation
Cpo
Output Enabled
Capacitance * (per stage)

ns

ns

ns

4

pF

10

pF

5
30

pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo

VCC 2

fin.

t For AC switching test circuits and timing waveforms see section 2.

I

c8SAMSUNG
Electronics
.

683

5181519
~~~:~g~t~ 52015211522

8-SIt Identity Cotpparators·

FEATURES

DESCRIPTION

• Compares two 8-blt words
• '518, '520 and '522 have 20KOPull-up resistors on
Q inputs

These identity comparators perform comparisons on two
eight-bit binary or BCD words. The '518 and '519 provide
P=O outputs, while the '520, '521, and '522 provide P=O
outputs. The '518, '51 9, and '522 have open-drain
outputs. The '518, '520, and '522 feature 20-kQ inputs
for analog or switch data.

TYPE

INPUT
PULL-UP
RESISTOR

'518

Yes

OUTPUT FUNCTION
AND
CONFIGURATION

P=O open-drain

'519

No

P=O open-drain

'520

Yes

P = 0 totem-pole

'521

No

P =0 totem-pole

'522

Yes

P=O open-drain

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• 3-8tate outputs with high drive current
(lOL =24 mA @ VOL =0.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface:with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

FUNCTION TABLE

PIN CONFIGURATION

INPUTS

Vee

P=Q/P=Ot
Q7
P1

P7

Q1

Q6

DATA
P, Q

OUTPUTS

ENABLE

G

P=Q

P=Q

P=O

L

H

L

L

P2

P6

P>O

L

H

Q2

05

P-'
P2 --'-'-'---I

~~

01-----. ....~

I

G~~~=>-------------~

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, Tsig . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -1,2mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vee
Operating Temperature
·KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

685

, 5181519
~~~g~t~ 52015211522
DC ELECTRICAL CHARACTERISTICS
Parameter

Symbol

(Vee=5V=10% Unle.ss Otherwise Specified)

T. =2S DC

Test Conditions

8-Bit Identity
Comparators

Typ

KS74HCTLS

TA

= _40DC to

KS54HCTLS

+8S DC T.= -5S DC to +12S DC Unit

Guaranteed L1mltt

Minimum High-level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum low-level
Input Voltage

VIL

.0.8

0.8

0.8

V

Minimum High-Level
Output Voltage
(Totem-pole Outputs)

VOH

VIN=VIH or VIL
lo=-20JAA
lo=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

VOL

VIN=VIH or Vil
lo=20JAA
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

Vee=Max
VIN=2.7V
VIN'=0.4V

-0.2
-0.6

-0.2
-0.6

-0.2
-0.6

±0.1

±1.0

±1.0

JAA

±0.5

±5.0

±10.0

JAA

3.5

3.5

3.5

rnA

8.0

80.0

160.0

fAA

2.7

2.9

3.0

mA

Maximum Low-Level
Output Voltage
(All Outputs)
Maximum Inpul
Current,
(,518, '520 and '522
o input)

I

0

V

mA

-

Maximum Input
Current
(All other Inputs)

liN

VIN=Vee or GND

Maximum Output
Leakage Current
(Open-Drain Outputs)

loz

VIN=VIH or VIL
Vour = Vee

Maximum
Icc

~uiescent

Supply Current

Additional Worst
Case Supply
Current

Vee Vee -0.1
4.2
3.93

I

I

~Iee

For '518, '520 and
'522:
V'N=GND (00-07)
VIN=Vee or GND
(all other inputs)
For '519 and '521:
VIN=Vee or GND
lour=OJAA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour=OJAA

c8SAMSUNG
Electronics

686

KS54HCTLS
KS74HCTLS

5181519
52015211522

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions

8-Bit Identity
Comparators

(Input t r • tfoEi;6 ns). HCTLS518. HCTLS519

54/74ACHT
T. =25°C
Vcc=5V

54HCTLS
KS74HCTLS
T. = -40°C to +85·C T.=-55°Cto +125°C
Unit
Vcc=5V±10%
Vcc=5.0V± 10%

Typ

Maximum Propagation Delay.
from P or Q to P=Q

Maximum Propagation Delay.
from G to P=Q

tpLH

26
29

33
36

40
45

47
53

tPHL

CL=50pF
CL =150pF

21
24

28
31

35
40

42
48

tpLH

C=50pF
CL=150pF

23
26

29
32

35
40

41
47

tPHL

CL=50pF
CL=150pF

18
21

24
27

30
35

36
42

Maximum Input Capacitance
Maximum Output Capacitance
Power Dissipation Capacitance *

5

CIN

Maximum Propagation Delay.
from G to P=Q

pF

Cpo

pF

Symbol Cond"lons

(Input t r • tfoEi;6 ns). HCTLS520. HCTLS521

54/74ACHT
T.=25°C
Vce=5V

KS74HCTLS
54HCTLS
T. = -40°C to +85°C T.=-55°Cto +125°C
Unit
Ycc=5.0Y:!: 10%
Vcc=5V:!:10%
Guaranteed Limits

tpLH

CL=50pF
CL=150pF

12
15

22
25

28
33

33
39

tpHL

CL=50pF
CL =150pF

16
19

22
25

28
33

33
39

tPLH

C=50pF
CL=150pF

15
18

20
23

25
30

30
36

tPHL

CL=50pF
CL=150pF

15
18

20
23

25
30

30
36

Maximum Input Capacitance

5

CIN

ns

ns

pF

Maximum Output Capacitance

COUT

pF

Power Dissipation Capacitance *

Cpo

pF

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions

(Input t r • tf~6 ns). HCTLS522 ~

54/74ACHT
T.=25°C
Ycc=5Y

T.

t Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
. Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range,Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:

Plastic Package (N): --12mW/oC from 65°Cto 85°C

Recommended Operating Conditions
Supply Voltage, Vee . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55 ° C to + 1 25 ° C
Input Rise & Fall Times, t r , t,
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or b~yond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
..
Characteristic

Symbol

(Vec=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

KS74HCTLS

KS54HCTLS

Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VOH

VIN=VIH or VIL .
10=-20/AA
10=-6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/AA
10=12mA
10=24mA

Maximum Input
Current

liN

VIN=Vce or GND

±0.1

±1.0

±1.0

/AA

Maximum 3-State
Leakage Current

102

Output Enable
=VIH
VouT=Vec or GND

±0.5

±5.0

±10.0

/AA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/AA

2.7

2.9

3.0

mA

Minimum High-Level
Output Voltage
f-

Additional Worst
Case Supply
Current

L\lee

VIN=Vce or GND
10UT=0/AA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0/AA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

689

I

KS54HCTLS
KS74HCTLS

533

OctalD-Type Transparent Latches
with 3~S~ate Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Condltlons t

(Input tr , tf~6 ns), HCTLS533
KS74HCTLS
KS54HCTLS
T. =25°C
T. = -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.OV
Vcc=5.OV:t::10%
Vcc=5.OV:t:: 10%
Typ

Maximum Propagation
Delay, D to

a

Maximum Propagation
Delay E to

a

tPlH

14
17

18
21

23
28

27
33

tPHl

Cl=50pF
CL=150pF

14
17

18
21

23
28

27
33

tplH

C=50pF
Cl=150pF

22
25

30
33

37
43

45
41

tpHl

CL=50pF
CL=150pF

22
25

30
33

37
43

48
54

24
27

32
35

40
45

48
54

24
27

32
35

40
45

48
54

19

25

31

37

19

25

31

37

Cl=50pF
tPZH
Maximum Output Enable
CL=150pF
I------ Rl=1kO
Time, OC to any
CL=50pF
tPZl
Cl=150pF

a

Maximum Output Disable
Time, OC to any

a

Guaranteed Limits

Cl=50pF
Cl=150pF

~
tpl!Z

Rl=1kO
Cl=50pF

ns

ns

ns

ns

Minimum Pulse Width,
E High

tw

6

10

12

15

ns

Minimum Setup Time,
D before E~

tsu

2

3

4

5

ns

Minimum Hold Time,
D after E~

tn

6

10

12

15

ns

CIN

5

pF

Maximum Input
Capacitance
Maximum Output
Capacitance

COUT

Output Disabled

10

pF

Power Dissipation
Capacitance· (per stage)

Cpo

OC=Vcc
OC=GND

5
30

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 1 fin.

t

For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

690

KS54HCTLS
KS74HCTLS

534

Octal 0-Type Flip-Flops
with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74lS logic family .
• low power consumptio.n characteristic of CMOS
• 3-State outputs with high drive current
(Iol = 24 mA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline'·' packages
(Available Tape & Reel), standard DIPs.

The '534 consists of 8 high-speed D-type edge-triggered
flip-flops coupled to 3-state output buffers with high drive
current capability . It can be used in implementing buffer
registers, I/O ports, bidirectional bus driver and working
registers.
The flip-flops are edge-triggered on the positive transition
of the clock: the Q outputs are set to the complement of
the logic levels that were set up at the D inputs.
The output buffers are controlled by a common signal (OC)
which places the outputs in high-impedance state when it
is taken high. The OC signal does not affect the internal
operations of the flip-flops. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to. their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

oc
20

8'0
80
70

2'0

70

3'0

60

3D

60

40
4<:)

5c:i

GNO

eLK

10

I

FUNCTION TABLE

Vee

10

(Each latch)

L~I~~!!--t!~~~

loc

ClK D:

I L
t H II
ILL
ILL
X
I H X X[

50

Q
L

H
00

~

I
I

I

I

lOGIC DIAGRAM
10

20

c8SAMSUNG
Electronics

3D

40

50

60

70

80

691

KS54HCTLS
KS74HCTLS

534

Octal D-Type Flip-Flops
with 3-State Outputs

Absolute Maximum Ratings*
Supply Voltage Range Vee. . . . . . . . -0.5V to + 7V
DC Input Diode Current. J,K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current. 10K
(Vo < -0.5V or Vo > Vee +0 5V)
±20 mA
Continuous Output Cu-rrent Per Pin. 10
(-0.5V < Vo < Vee +0.5V) ......... ±70 mA
Continuous Current Through
Vee or GND pins ................. ±250 mA
StorageTemperature Range. Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vee .............. 4.5V to 5.5V
DC Input & Output Voltages *, VIN. VOUT . . OV to Vee
Operating Temperature
·KS74HCTLS: -40°C to +B5°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times. tr • t, . . . . . . . . . Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V±10% Unless Otherwi~e Specified)

Ta =25°C

Symbol Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

O.B

O.B

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/JA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10 = 20iJA
lo=12mA
10=24mA

0,1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

J,N

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Icc

B.O

BO.O

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

61ee

VIN=Vee or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

692

KS54HCTLS
KS74HCTLS

534

Octal D-Type Flip-Flops
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input tr • t~6 ns). HCTlS534
KS74HCTLS
KS54HCTLS
T.=2S·C
T.- -40·C to +8S·C TI - -55·C to +125°C
Unit
Vee=5.0V
Vec=5.0V::t: 10%
Vee 5.0V::t: 10%

=

Typ

Maximum Operating
Frequency
Maximum Propagation
Delay. ClK to any Q

f max

CL=50pF

50

35

30

25

tpLH

CL=50pF
CL=150pF

21
24

28
31

35
40

42
48

tPHL

CL=50pF
CL =150pF

21
24

28
31

35
40

';'2
48

CL=50pF 21
CL =150pF 24

28
31

35
40

42
48

CL=50pF 21
CL=150pF'24

28
31

35
40

42
48

19

25

31

37

19

25

31

37

tw

9

13

15

18

ns

tsu

10

13

17

20

ns

th

-3

0

0

0

ns

tPZH

Maximum Output Enable
Time. oc to any

f---

Maximum Output Disable
Time. OC to any

f---

a

a

Minimum Pule Width,
ClK High or low
Minimum Setup Time,
D before CLKt
Minimum Hold Time,
Dafter ClKt
Maximum Input Capacitance

Guaranteed Umlts

RL=1kO

tPZL
tpHZ
tpLZ

RL=1kO
CL=50pF

MHz

ns

ns

ns

5

pF

Maximum Output Capacitance COUT Output Disabled

10

pF

Power DiSSipation
Capacitance* (per stage)

5
30

pF

CIN

Cpo

OC=Vcc
OC=GND

*

Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC' fin.

t

For AC switching test circuits and timing waveforms see section 2.

=8 !!e!'ISUNG

693

I

KS54HCTLS
KS74HCTLS

5401/541
·/l

Octal Buffers and -Line Drivers
with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pilH)ut, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL ~ 24 mA @ VOL = O.5V) for direct bus Intt,rface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.SV
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +8S o C
KSS4HCTLS: -55°C to +125°C
• Package options include "small outline" packages.
(Available Tape & Reel), standard DIPs.

The '540 and '541 are general purpose high-speed octal
line drivers/buffers with 3-state outputs. The inputs and
outputs are located on OPPOSite sides of the 20·pin
package, thus improving circuit board density. The '540
provides inverted data and the' 541 provides true data at
the outputs.
The three-state control gate is a 2-input NOR such that
if either G1 or G2 is high, all eight outputs are in the high
impedance state.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
, allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected trom damage due to
static discharge by internal diode clamps to Vcc and
ground

LOGIC DIAGRAMS

PIN CONFIGURATION
G1
<31

Vee

A1

G::!

A2

Y1

A3

Y2

A4

Y3

A5

Y4

A6

Y5

A7

Y6

A8

Y7

GND

Y8

(1)

'540

'541

G1
G2

G2

(18)

(18)
A1

Y1

A1

Y2

A2

Y3

A3

Y1

(H)

(7)

(16)
A3

Y2

(.1S)

(15)

(15)

Y4

Y4

A4

(14)

(14)
Y5

A5

Y5

(13)

(13)

FUNCTION TABLE

V6

AS

Input

A7

Output

G,

G2

A

'540

'541

L
L
H
X

L
L
X
H

L
H
X
X

H
L

L
H

Z
Z

Z
Z

c8SAMSUNG
Electronics
'

A8

Y3

Y6

AS

(12)

(12)

Y7

Y7

(11) .Y8

A

(9)

(11)
Y8

694

KS54HCTLS
KS74HCTLS

5401541
I·

Octal Buffers and Line Drivers
with 3-State Outputs

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vec
Operating Temperature
Range
KS74HCnS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)

KS74HCTLS J5_0_~
KS54HCTLS
Ta= -40°C to +85°C Ta= -~5°~~--±~~~_~ Unit

Ta =25°C

Test Conditions

Guaranteed limits

Typ
Minimum High-Level
Input Voltage
~-

-

Maximum Low-Level
Input Voltage

- - - - f--------------------- f-----

Minimum High-Level
Output Voltage

VIN=VIH or VIL
10=-20J.tA
10=-6mA

---- ---- -

Vee Vee -0.1
4.2
3.98

- - - - - - - - + - - - - I - - - - - - . : ; ' - - - - - - - - / - - - - - -1------------- -- -

VIN=VIH or VIL
10=20J.tA
10= 12mA
10=24mA

Maximum Low-Level
Output Voltage

f---------------t---+-------~--

Maximum Input
Current

liN

VIN = Vee or GND

0

2.0
--

--j

0.8

VIL

f-~---------

VOH

2.0

2.0

VIH

/-------f--- - - - ------------1---- +------------

0.8

V

--------t-------------------t-----

0.8

V

--- -------t---------------------------f---

Vee -0.1
3.84

Vee -0.1
3.7

V

-------------------+------j

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

±0.1

± 1.0

± 1.0

V

-----/------------r-- - - - - -----.------------ - - - - - - - - - - + - - - - - 1

J.tA

f------------+-----f------------ f-------------f----------------t------------------

Maximum 3-State
Leakage Current

Output Enable
±5.0
±10.0
j.lA
±0.5
loz
=VIH
f____-+_ _--+V_O_U_T
__
=_V___e_e _or GN~ __ t - - - - - - - r------------------ _____________-+------I
Maximum Quiescent
lee
VIN=Vee or GND
80.0
8.0
160.0
10uT=0j.lA
Supply Current

c8SAMSUNG
Electronics

695

I

KS54HCTLS
KS74HCTLS

540'54'1
'/.

AC ELECTRICAL CHARACTERISTICS
Characteristic

Octal Buffers and Line Drivers
,with 3-State Outputs
(Input tr, tf~6 ns), HCTLS540, HCTLS541
KS74HCTLS
KS54HCTLS
T.=25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V~10%
Vcc=5.0V~ 10%

Symbol

Condltlons t

tpLH

CL= 50pF
Cl,=150pF

11
14

15
18

19
24

23
29

tpHL

CL= 50pF
CL =150pF

11
14

15
18

19
24

23
29

18
21

25
28

25
30

37
43

18
21
13

25
28

31
36

37
43

18

23

27

13

18

23

27

Typ
Maximum, Propagation
Delay, A to Y

CL= 50pF
tPZH
Maximum Output Enable
CL=150pF
r - - - - RL=1kO
Time, G to Y
Cl,=50pF
tPZL
CL=50pF
Maximum Output Disable r -tpHZ
RL=1kO
--Time, G to Y
tpLZ CL=50pF
Maximum Input
Capacitance

CIN

Guaranteed Limits

ns

ns

ns

5

pF
pF

Maximum Output
Capacitance

COUT

Output Disabled

10

Power Dissipation
Capacitance· (per stage)

Cpo

G=Vcc
G=GND

5
30

pF
2

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC fin,
t For AC switching test circuits and timing waveforms see section 2,

c8SAMSUNG
Elec~~onics

696

KS54HCTLS
KS74HC:rLS

563

Octal D-Type Transparent Latches
with 3-State Outputs

FEATURES

DESCRIPTION

• 8 latches in a single package
• Full parallel access for loading
• Function, pin-out, spee~and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high -drive current
(IOL = 24mA @ Vo~ = O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMqS devices
• Wide operating voltage range: 4.5\1 to 5.. 5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: ·-40°C to, + 85°C
KS54AHCT: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.,

The '563 consists of 8 high· speed D-type latches coupled to 3-state output buffers with high drive current capability. It can be used in implementing buffer register, I/O ports,
bidirectional bus drivers and working registers.

40
50

The output buffers are controlled by a common signal (OC)
which places the outputs at ahigh-impedance stage when
it is taken high. The OC signal does not affect the internal
operations of the latches. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

PIN CONFIGURATION

OC
10
20
3D

The latches are transparent; when the enable (E) is high,
the Q outputs follow complements of the data (0) inputs.
When the enable is low, the outputs latch at the levels that
were set up at the 0 inputs.

Vee

10
20
30
40
5-e5
60

60
70
80

70
80

GNo

E

I

FUNCTION TABLE
(Each Latch)

L____lnpU!~_.

_____
0

I

OC

·E

I

L

H

H

L

H

L

L

L___~ ______

_

~-L O~~~~._~~J
i

-l----i

LX!
._~
X____1 __

__ .___

-

:
H

00

Z .. ___

I

J

LOGIC DIAGRAM

=8SAMSUNG
Electronics

697

563

KS54HCTLS
KS74HCTLS

OctalD-Type Transparent Latches
with 3-StateOutputs

Absolute Maximum Ratings*
Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vec +0.5V) .... ±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
.. ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vce +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 rnA
Storage Temperature Range, T8 tg . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages", VIN, VOUT
OV to Vec
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf
Max 500 ns

.. Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C

Typ
Minimum High-Level
Input Voltage
--

J;

f-~-------~-

VOH
__

VIN=VIH or VIL
10=-20I-/A
VIN = VIH or VIL
10= 20I-/A
10=12mA

~--------------_+~~-+~-'0~=24mA
Maximum Input
Current

Guaranteed Limits
2.0

2.0

V

0.8

Vee Vee -0.1
3.98__ _

VIN=Vee or GND

o

0.8

V

1 - - -________________________ 1 -_____________________ _

---f--!9-===='=-~~---- 4.2

Maximum Low-Level
Output Voltage

KS54HCTLS

--~---------~~--

- - - - - - - - - r----t--------- -------------.-- -- - ..---------.. 1----- . - -------.-- ----

Maximum Low-Level
VIL
0.8
~nput VOltage
__ 1 -_______--------------_ +-~e__---Minimum High-Level
Output Voltage

~~_

--------- - - - - - - - - - - -

2.0

VIH
f-----.-~

KS74HCTLS

Ta= -40°C to +85°C Ta= -55°C to +125°C Unit

I---------~----------

0.1
0.26
0.39
±0.1

f------------------- - - - - - + - - - - - - - - - - + - - 1------------

Vce -0.1
3.84

Vee -0.1
3.7

0.1
0.33
0.5

0.4

-- ------ --- -----+--

±1.0

V

0.1
----------

±1.0

V
---

IlA

----------~--i~-----------------~-

Maximum 3-State

Output Enable
loz
=VIH
±0.5
±5.0
± 1 0.0
IlA
_L_e_a_k_ag_e_c
__u_rr_e__
nt~_+-___-+-V..::..O.c::..UT,-=_V__e~c_~~_G_N_D ~ _______ \-______________ ~________ ~--_--~_~-------- ____

Maximum Quiescent
[~Iy Current
Additional Worst
Case Supply
Current

Icc

..6.lcc

VIN=Vee or GND
10UT=01lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10UT=01lA

c8SAMSUNG
Electronics

8.0

80.0

160.0

IlA

2.7

2.9

3.0

mA

698

KS54HCTLS
KS74HCTLS

563'

OctalD-Type Transparent Latches
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Condltlons l

(Input tr ,

tf~6

ns), HCTLS563

KS74HCTLS
KS54HCTLS
T.=25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.0V
Vcc=5.0V:!:10%
Vcc=5.0V:!: 10%
Typ

Maximum Propagation
Delay, D to

a

Maximum Propagation
Delay E to Q

Maximum Output Enable
Time, OC to any

a

tPLH

14
17

18
21

23
28

27
33

tpHL

CL= 50pF
CL =150pF

14
17

18
21

23
28

27
33

tpLH

C= 50pF
CL=150pF

22
25

30
33

37
42

45
51

tpHL

CL= 50pF
CL=150pF

22
25

30
33

37
42

45
51

CL= 50pF 24
CL=150pF 27

32
35

40
45

48
54

CL= 50pF 24
CL=150pF 27

32
35

40
45

48
54

tPZH
RL=1kO

-

tPZL
Maximum Output Disable
Time, OC to any

a

Minimum Pulse Width,
E High

-

Guaranteed Limits

CL= 50pF
CL =150pF

tpHZ
tpLZ

RL=1kO
CL=50pF

tw

19

25

31

37

19

25

31

37

9

13

15

18

ns

ns

ns

ns
ns
..

Minimum Setup Time,
D before E~

tsu

6

8

10

10

ns

Minimum Hold Time,
o after E~

th

6

10

12

15

ns

CIN

5

pF

Maximum Output Capacitance COUT Output Disabled

10

pF

Power Dissipation
Capacitance* (per stage)

5
30

Maximum Input Capacitance

Cpo

OC=Vcc
OC=GND

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC fin.
2

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

699

11

. KS54HCTLS·
KS74HCTLS

564

.

Octal D~ Type Flip-Flops
with 3-State Outputs

FEATURES

DESCRIPTION

• Function, pin-ollt, speed and drive compatibility with
54/74lS logic family
• low power consumption characteristic of CMOS
• 3-State Qutputs with high drive current
(IOL = 24 mA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over. industrial and
military temperature ranges:
KS74HCTlS: -40°C to +85°C
KS54HCTlS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '564 consists of 8 high-speed D-typeedge-triggered
flip-flops coupled to 3-state output buffers with high drive
current capability. It can be used in implementing buffer
registers, 1/0 ports, bidirectional bus driver and working
registers.
The flip-flops are edge-triggered: on the positive transition
of the clock, the Q outputs are set to the complement of
the logic levels that were set up at the D inputs.
The output buffers are controlled by a common signal (OC)
which places the outputs at high impedance state when
It is taken high. The OC signal does not affect the internal
operations of the flip-flops. Old data can be retained or new
data can be entered while outputs are off.
These' devices provide speeds and' drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to V cc and
ground.

PIN CONFIGURATION

Oc

FUNCTION TABLE
Vee

10

1Q

20

20

30

30

40

40
50
60

50
60
70

80
GNO

70
80
ClK

(Each Flip-Flop)
Output

Inputs
-----~

I

OC

ClK

D

L
L
L
H

t
t
L
X

H

L
X
X

f------

a
L
H

00
Z

LOGIC DIAGRAM

c8SAMSUNG
Electronics

700

KS54HCTLS
KS74HCTLS

564

Octal D-Type Flip-Flops
with 3-State OutPLlts

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins ................ ±250 mA
Storage Temperature Range, Tstg . . . - 65 ° C to .+ 150 ° C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vee
Operating Temperature
Range
·KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf ..

* Absolute Maximum Ratings are those values beyond

Unused inputs. must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect de'fice reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2~0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vce -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Minimum High-Level
Output Voltage

VOH

VIN = VIH or VIL
10=-20/-LA
10=-6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O /-L A
10=12mA
10=24mA

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

/-LA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vec or GND

±0.5

±5.0

±10.0

/-LA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/-LA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

ll.lee

VIN=Vee or GND
10UT=0/-LA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10UT=0/-LA

:8 !e!'lSUNG

Vee Vee -0.1
4.2
3.98
0

701

I

KS54HCTLS
KS74HCTLS

564

Octal 0-Type Flip-Flops
with 3';'State Outputs

AC ELECTRICAL CHARACTERISTICS
I

Characteristic

Symbol Conditions t

tf~6

ns), HCTlS564

KS74HCTLS
KS54HCTLS
T.=25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.OV
Vcc=5.0V±10%
Vcc=5.0V± 10%
Typ

I

I Maximum

Operating
Frequency

i

Maximum Propagation Delay,
ClK to any Q

Maximum Output Enable
Time, OC to any Q

CL= 50pF

45

35

30

25

tPLH

CL= 50pF
CL=150pF

21
24

28
31

35
40

42
48

tPHL

CL= 50pF
CL=150pF

21
24

28
31

35
40

42
48

CL= 50pF 21
CL=150pF 24

28
31

35
40

42
48

CL= 50pF 21
CL=150pF 24

28
31

35
40

42
48

19

25

31

37

19

25

31

37

tPZH
f---------------

RL =1 kO

tPZL
Maximum Output Disable
Time, OC to any

a

Guaranteed Limits

f max

1-

I

(Input tr ,

tpHZ

r------

tpLZ

RL=1kO
CL=50pF

MHz

ns

ns

ns

Minimum Pulse Width,
ClK High or low

tw

9

12

15

18

ns

Minimum Setup Time,
D before ClKt

tsu

10

13

17

20

ns

Minimum Hold Time,
Dafter ClKt

th

-3

0

0

0

ns

Maximum Input Capacitance

10

Power Dissipation
Capacitance· (per stage)

5
30

Cpo

pF

5

CIN

Maximum Output Capacitance COUT Output Disabled
OC=Vcc
OC=GND

---t-----

pF
pF

• Cpo determines the no-load dynamic power dissipation: PD=CPD VCC fin.
2

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

702

KS54HCTLS
KS74HCTLS

573

Octal D-Type Transparent Latches
with 3-:-State Outputs

FEATURES

DESCRIPTION

• 8 latches in a single package
• Full parallel access for loading
• Function, pin-out, speed and drive compatibility with
54/74ALS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOl 24 rnA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface direclty with TTl, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: -40°C to + 85°C
KS54HACT: -40°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '573 consists of 8 high-speed Ootype latches coupled to 3-state output buffers with high drive current capability. It can be used in implementing buffer registers, I/O ports,
bidirectional bus drivers and working registers.

=

=

The latches are transparent: when the enable (E) is high,
the outputs follow the data (D) inputs. When the enable
is low, the OlJtputs latch at the levels that were set up at
the 0 inputs.

a

The output buffers are controlled by a common signal (OC)
which places the outputs at a high-impedance state when
it is taken high. The OC signal does not affect the internal
operations of the latches. Old data can be retained or new
data can be entered while outputs are off.
There devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and €MOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode cli:i:-'1ps to Vee and
ground.

PIN CONFIGURATION

oc

Vee

10
20

10
20

3D
40
50

(Each Latch)

30

Inputs

40

60
70

50
60
70

80

80

3

OC

Output

0

--

Q
-~

H
H

L
L
L

E

GNO

I

FUNCTION TABLE

H

H

H

L
X

L
X
X

00

70

80

L

Z

LOGIC DIAGRAM
10

20

c8SAMSUNG
Electronics

30

40

50

60

703

KS54HCTLS
KS74HCTLS

573

Octal D-Type Transparent Latches
with 3-StateOutputs

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to. +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +O,5V)
±70 mA
Continuous Current Through
± 250 mA
Vee or GND pins . . . . .
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per Package, Pdt. . . .. 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , it . . . . . . . . . Max 500 ns

• Absolute Maximulll Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

KS74HCTLS

KS54HCTLS

Ta= -40°C to +85°C Ta= -55°C to .+125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/JA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/J A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

/J A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

/J A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/J A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

lllee

VIN=Vee or GND
10uT=0/JA
per input pin
VI=2.4V
other Inputs:
at Vce or GND
10UT=OjAA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

704

KS54HCTLS
KS74HCTLS

573

OctalD-Type Transparent Latches
with 3-State Outputs
.

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input tr • t,,,6 ns). HCTLS573
KS74HCTLS
KS54HCTLS
O
T. =2S C T. = -400C to +85 0C T.= -55°C to +125°C
Unit
Vee S.OV
Vec=5.0V±10%
VcczS.OV± 10%

=

Typ

Maximum Propagation
Delay. D to

a

Maximum Propagation
Delay E to

a

Maximum Output Enable
Time.
to any

oc

a

Maximum Output Disable
Time.
to any

oc

a

14

Guaranteed Limits

18
21

23
28

27
33

23
28

27
33

tpLH

CL= 50pF
CL=150pF

tpHL

CL= 50pF
CL =150pF

17

18
21

tpLH

C=50pF
CL =150pF

22
25

30
33

37
42

45
51

tpHL

CL= .50pF
CL =150pF

22
25

30
33

37
42

45
51

CL= 50pF 24
CL=150pF 27

32
35

40
45

48
54

CL= 50pF 24
CL=150pF 27

32
35

40
45

48
54

tPZH
~

RL =lkfi

tPZL
tPHZ

r---

tpLZ

RL =1kfi
CL=50pF

17
14

19

25

31

37

19

25

31

37

ns

ns

ns

ns

Minimum Pulse Width.
E High

tw

9

12

15

18

ns

Minimum Setup Time,
D before E.

tsu

6

8

10

12

ns

Minimum Hold Time.
D after E.

th

6

10

12

15

ns

CIN

5

pF

10

pF

Maximum Input Capacitance

Maximum Output Capacitance COUT Output Disabled
Power Dissipation
Capacitance *

Cpo

OC=Vcc (per stage) 5
30
OC=GND

pF
2

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC fint For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

,

705

I

574

K-SS4HCTLS

KS74HCTLS

OctatD·Type FUp;.F/ltJ/Js
with3.-,Stat. Od~,1J,.· u, ts "
•

. !

•

FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• low pOwer consumption characteristic of CMOS
• 3~Sta.e oldputs. with high drive current
(IOL 24 mA @' VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.SV to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '574 consists of 8 high-speed Ootype edge-triggered
flip-flops coupled to 3-state output buffers with high drive
current capability. It can be used in implementing buffer
registers, 1/0 ports, bidirectional bus drivers and working
registers.

=

=

!

The flip-flops are edge-triggered on the positive transition of the clock. The Q outputs are set to the.,logicl,evel 13
that were set up at the 0 inputs.
The output buffers are controlled by a common signal (OC)
which places the outputs at a high-impedance state when
it is taken high. The OC signal does not affect the internal
operations of the flip-flops. Old data can be retained or new
data can be entered while outputs are off.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with DL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to V cc and
ground.

PIN CONFIGURATION
oc

Vee

10
20

10

60
70
80

20
30
40
50
60
70
80

GNO

ClK

30
40
50

FUNCTION TABLE
(Each Flip-Flop)
Inputs

oroutput

f . - - - _ _ ._ _ _. _

OC

ClK

0

_ _ _ __

Q

LOGIC DIAGRAM
10

20

30

40

50

60

70

80

10

20

30

40

50

60

70

c8SAMSUNG
Electronics

80

706

KS54HCTLS
KS74HCTLS

574

Octal D-Type Flip-Flops
with 3-State Outputs

Absolute Maximum Ratings·
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current,ilK
(VI < -0.5V or VI> Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V) .
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, T8 tg . . . -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages *, VIN,· Vour . . OV to Vee
Operating Temperature
Range
·KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf . . . . . . . . . Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may oecur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% UnlesS Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20/AA
10=-6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VII..
10= 2O/AA
10=12mA
10=24mA

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/AA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vee or GND

±0.5

±5.0

±10.0

/AA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/AA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

61ce

VIN=Vee or GND
10ur=0/AA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour = O/AA

c8SAMSUNO
Electronics

Vee Vee -0.1
4.2
3.98
0

707

I

KS54HCTLS
KS74HCTLS

574

Octal 0-Type Flip-Flops
with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Condltlons l

(Input tr , t, Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±70 mA
Continuous Current Through
±250 mA
Vee or GND pins
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT
OV to Vec
Operating Temperature
Range
·KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55 ° C to + 1 25 ° C
Max 500 ns
Input Rise & Fall Times, tr , tl

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Test Conditions

(Vce=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

_~_

f-,------

Typ
Minimum High-Level
Input Voltage

--

Guaranteed limits
2.0

VIH

KS74HCTLS
KS54HCTLS
Ta= -400C to +85°C Ta= -55°C to +125°C Unit

2.0

2.0

f--------

Maximum Low-Level
Input Voltage
Minimum High-Level
Output Voltage
(All '590 Outputs and
'591 RCO Outputs)

V
-

0.8

Vil

--- ---

0.8

0.8

V
j----

VOH

VIN = VIH or Vil
lo=-20J-lA
lo=-6JT1A

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or Vil
lo=20J-lA
lo=12mA
lo=24mA

Maximum Input
Current

hN

VIN=Vee or GND

IOl

Output Enable
=VIH
VouT=Vee or GND

Vee Vee :-0.1
4.2
3.98

Vee -0.1
3.84

Vee -0.1
3.7

V
c------

0

0.1
0.26
0.39

0.1
0.33
0.5

±0.1

±1.0

0.1
0.4

--f--

-r----~

±1.0

J-lA
- - f----

--

Maximum 3-State
Leakage Current

V

±0.5

±5.0

±10.0

,.,.A
--~

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

~Iee

VIN=Vee or GND
8.0
10uT=Oj.lA
--f------- ,------per input pin
VI=2.4V
other Inputs:
2.7
at Vee or GND
lOUT = OJ-lA

c8SAMSUNG
Electronics

f------

80.0

160.0

,.,.A

2.9

3.0

mA

711

I

KS54HCTLS
KS74HCTLS

5901/591
/.

AC ELECTRICAL CHARACTERISTICS
Conditions t

Symbol

Characteristic

.8-Bit Binary Counters with
Output Registers
(Input tr ,

tf~6 ns), HCTlS590

T. =25°C
Vcc=5.0V

KS74HCTLS
KS54HCTLS
T.=-40°Cto +85°C T.= -55°C to +125°C
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%

Typ

Maximum Clock Frequency
Maximum Propagation Delay,
CCKt to RCO
f--

35

25

20

20

~

24

32

40

48

tpHL

24

32

40

48

26

35

44

52

Maximum Propagation Delay,
to RCO

tpLH

Maximum Propagation Delay,
RCKt to Q

~

Maximum Output Enable Time,

~

CClR~

G~ to Q

CL=50pF

tpHL

RL=1kO
CL=50pF

tPZL

Maximum Output Disable Time,
<3t to Q

tpHz

~

tp\.Z

Minimum Pulse CCK or RCK
High or Low
Width
CClR low
CCKEN~

tw

before

CCKt
Minimum
Setup Time

CClRt before
CCKt

tsu

16

21

26

31

16

21

26

31

18

24

30

36

18

24

30

36

18

24

30

36

18

24

30

36

12

16

20

24

12

16

20

24

12

16

20

24

12

16

20

24

24

32

40

48

ns
ns
ns
ns
ns
ns

ns

ns

I

CCKt to
RCKttt
Maximum Input CapaCitance

Guaranteed Limits

fmax

5

pF

Maximum Output Capacitance

COUT Output Disabled 10

pF

Power Dissipation Capacitance *

Cpo

pF

CIN

* Cpo determines the no-load dynamic power dissipation: PD=CPD VCC 2 fin.
t For AC switching test circuits and timing waveforms see. section 2.

t t The RCKt to CCKt setup time ensures that the counter will see stable data from the register output.

c8SAMSUNG
E~ctronics

712

8-Bit Binary Counters with
Output Registers
AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input tr,tf~6 ns), HCTlS591
Ta =2SOC
Vcc=5.0V
Typ

Ta

KS74HCTLS
KSS4HCTLS
+85°C Ta= -55°C to +125°C
Unit
Vcc=5.0V:i: 10%
Vcc=5.0V:i:10%

='-40°C to

Guarantied Umlts

Maximum Clock Frequency

fmax

35

25

20

20

Maximum·. Propagation Delay,
CCKt to RCO

tpLH

24

32

40

48

tpHL

24

32

40

48

26

35

44

52

-

Maximum Propagation Delav,
CClRt to RCO

tpui

Maximum Propagation Delay,
RCKt to Q

~

27

37

46

55

tpHL

16

21

26

31

Maximum Output Enable Time,
G+ to Q

tPZL

18

24

30

Maximum Output Oisable Time,
Gt to Q
.
.

tpLZ

18

24

12

Minimum Pulse CCK or RCK
High or low
Duration
CClR Low

CL=50pF
RL=1kfl

tw

/

"

CCKENt before
CCKt
Minimum
Setup Time

CClRt before
CCKt

tsu

CCKt to
RCKttt "
Maximum Input Capacitance

CIN

V

ns
~

ns
ns
ns

36

ns

30

361

ns

16

20

24

12

16

20

24

12

16

20

24

12

16

20

24

24

32

40

48

5

ns

ns

pF

Maximum Output Gapacitance

COUT Output Disabled

pF

Power Dissipation Capacitance *

Cpo

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2..tin.
t For AC switching test circuits and timing waveforms see section 2. I'
tt The clocks may be tied together, in whicg. case the register state will be one clock pulse behind the counter.

c8SAMSUNG
Electronics

713

I

2/593

V~Pit Bina,ry Counters

KS54HCTLS 5.·.,9,
KS74HCTLS

""Jnput Registers H '

FEATURES

with·

DESCRIPTION

• Parallel Register Inputs ('592)
• Parallel 3-State I/O: Register Inputs/Counter Outputs
('593)
• Counter Has Direct Overriding Load'and Clear
• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOl =24 rnA @ VOL =O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for opera.tion over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: \ - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

PIN CONFIGURATIONS
'592

'593

B

vee

AJO,

Vee

C

A

B/O.

G

D

CLOAD

C/Oe

G
RCKEN

E

RCK

0/00

CCKEN

E/O E

RCK

G

CCK

FlO.

CCKEN

H

CCLR

G/OG

CCKEN

RCa

H/OH

CCK

GND

CLOAD

CCLR

RCO

GNO

The '592 and '593 both contain an B-bit register which feeds
an S-bit binary counter. The counter is incremented on the
rising edge of th~ CCK input, provided that clock enable,
CCKEN, is low. When the counter increments to the all
ones condition, ripple carry out, RCa, will go low. This
• enables either synchronous cascading of the counters by
connecting the RCO of the first stage to the CCKEN of
the second, or clocking both circuits in parallel. Ripple
cascading is accomplished by connecting the RCO of the
first to the CCK of the second stage. A clear input is also
provided which will reset the counter to the all zeros state.
The input register is loaded on the rising edge of the register
clock, RCK. The outputs of this register feed the counter.
The counter is loaded with the register's contents when
the clock load, CLOAD, input is taken low.
The '592 differs from the '593 in that the latter device has
bidirectional input/output pins. The 3-state outputs of the
counter can be enabled and are active when enable input,
G, is taken low and input G is taken high. The outputs of
the counter then appear on the register inputs. This enables
connection of this part to a system bus. The '593 also has
a second clock enable pin, CCKEN, which is active high
and it also has an active low register clock enable, RCKEN.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external co'mponents. .
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE
INPUTS (' 592)
RCK

FUNCTION

CLOAD

CCLR

CCKEN

CCK

X

L

H

X

X

Register data is loaded into counter

X

H

L

X

X

Counter clear

S

H

H

X

X

The data of a thru H inputs is stored into
register

~

H

H

X

X

X

H

H

L

X

H

H

L

S
L

X

H

H

H

X

Register state is not changed
Counter advances the count
No count
No count

X: Don't car.:;..e_ _ _ _ _ _ _ _ _ _ _ _ _ __
RCa

OA'· OB' Oc' • OD' OE' • OF' OG' • OH'
(OA'

f\J

OH': Internal outputs of the counter)

c8SAMSUNG
Electronics

714

592/593

8-Bit Binary Counters with
Input Registers

KS54HCTLS
KS74HCTLS '

LOGIC DIAGRAMS
'592

CCLA

(10)

~I~

CCK

(11)

CLOAD
RCK

.~
(13)

A

B

~
.----

---

v

...-

1

-

.....--

r-<: I>c

""""--

R a
~6 i.....-

...-

r--

(15)

0

D

ll)

D

k t>'c

L...-.-

C

D

......-(l

l>c

'--(4)

r--< ~c
(5)

""""--

-o

~R

~

L h

a

0

L0-

o

L I-

R

a

I>

I

_.

....

--

i.o--

.

r--;::

~
.

n

>-~

1

r---

~~

...-

L-c I>c

=8SAMSUNG
Electronics
. .

a

LC >T

...~ i>c

H (7)

R

0

Fl

L...-.-

r---

""""--

(6)

Lh

i.o--

k >c
G

~~

o

I>T

'--0

..-~

Lh

L..--

~

0

F

o

t>T

r--

0

fl

.----

-

(3)

~--

I.......--

.~

A

--

~ R a

~ R a

0

.--

L f-<

~ t>c

L..---;.

E

o

LC I>T

........-

(2)

L-1

>T

o

L I-

R

a

I>T

'---

-~cF1

r---

~

o

L I-

I>T
R a
r..-

715

KS54HCTLS
KS74HCTLS
LOGIC

5921593
"'

,'8-Sit'Sinary Counters with
'Iflput Registers

DIAGRAMS(Continued)

'593
(19)

G

(18)

G
. (12)
CCiJf

'·~I~

CCKEN
CCKEN

CCK

(14)
(13)

,

(9)

-

I

(17)
....J

RCK

G

'l
(16)

AlO A

..

~

(1)

I

...

D

1

(2)

k
(3)

rb>c

~R

...

.

'--

I

~
D

~

[ rD

~ ~C

~R

(6)

[~
D
I>c
H:L
-.-

(7)

GIOG

l~
D

H: t>c
HIOH

I~
D
.
L--< t>c
i.....-

c8SAMSUNG
. Electronics

¢-

rLT
---<: R 0

'-M
M
L

~~

L..--

~f-

~

r

I

~

~

L.(;D

~T

~R

LI-

0

L..--

I

~R 0
"---

1
~D
0

L..--

I ~ __
L.(t>T
R 0

L--..c

~

...

~

u-

>T

~R

_I-

4-

r-

L.OD
LIt>T

i.....-

(8)

,...

0

r

i.....-

FI OF

L'-

;>T
t>c

~A

¢-

~

i.....-

(5)

0

!......--

~ D

~ t>c

E/O E

\,,1-

D
~T

-

~

r--

LO

i.....-

k
~

0

"---

D

D

0/0 0

~R

[ r-

C/Oc

Lf-

L..c~T

'.

*

(11)
R

r-----'"""

~

~

D

'-

B/O B

TO THAT SHOWN FOR
CCK

~

~ ~C·

(4)

~

GATING FOR RCK .
IS SIMILAR IN DETAIL

~

~
~

'-"~
~

1
~

~

716

KS54HCTLS
KS74HCTLS

592/593

8-Bit Binary Counters with
Input Registers

Absolute Maximum Ratings·
Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
± 250 mA
Vce or GND pins
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt . . .
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce . ..
. ........ 4.5V to 5.5V
DC Input & Output Voltages * " VIN, VOUT . . OV to Vce
Operating Temperature
·KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf .' ........ Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stre~s ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C

KS74HCTLS
KS54HCTLS
Ta =-40°Cto +85°C Ta=-55°Cto +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20,.,A
10= -6mA

Vce -0.1
3.84

Vee -0.1
. 3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20,.,A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

,.,A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

,.,A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

Additional Worst
Case Supply
Current

6 1ee

VIN=Vec or GND
10UT=0,.,A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lOUT = O,.,A

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

,.,A

..

2.7

2.9

3.0

_- c---..
mA

717

I

·KS54HCTLS
KS74HCTLS

5'"'9·2"5'
93"
/1

8-Blt Binary

Count.rs with

'Input Ftegist8r,$,:'

.J

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

(Input tr ,

tf~2 n~), HCTLS592

T. =25°C
Vee=5.0V

KS74HCTLS
KS54HCtLS
T.=-400Cto +85°C T.= -55°C to +125°C
Unit
Vee = 5.0V % 10%
Vcc=5.0V% 10%

Typ

Maximum Clock Frequency

Guaranteed Limits

fmax

35

25

20

20

~

24

32

40

48

24

32

40

48

~

24

32

40

48

tpHL

24

32

40

48

Maximum Propagation Delay,
to RCO

tpHL

24

32

40

48

Maximum Propagation Delay,
RCKt to RCO

~

26
CL=50pF
CLOAD=GND 26

35

44

52

35

44

52

12

16

20

24

Maximum Propagation Delay,
CCKt to RCO
Maximum Propagation Delay,
CLOAD~

to RCO

CCLR~

tpHL

tPHL

tw

CLOAD Low
before

CCKt
Minimum
Setup Time

ns

CL=50pF

CCK or RCK
Minimum Pulse
High or Low
Width
CCLR Low
CCKEN~

MHz

CCLRt before
CCKt

tsu

RCKt before
CLOADtt
Data A-Ht before
RCKt

12

16

20

24

12

16

20

24

12

16

20

24

12

16

20

24

24

32

40

48

12

16

20

24

th

a

0

0

0

Maximum Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

Minimum Hold Time

ns
ns
ns

ns

ns

ns
pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin,
t For AC switching test circuits and timing waveforms see section 2.

t t The RCKt to CLOAD setup time ensures that the counter will see stable data from the register output.

c8SAMSUNG
Electronics

718

KS54HCTLS
KS74HCTbS

5921593
I.
or

.:

'3"

r

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

8-Bit Binary Counters with
Input Registers

Conditionst

(Input tr • tf~6 ns). HCTLS593
T.=25°C
Vcc=5.0V
Typ

Maximum Clock Frequency

f max

KS74HCTlS
KS54HCTlS
T.= -40°C to +85°C T.== -55°C to +125°C
Unit
Vcc=5.0V%10%
Vcc =5.0V% 10%
Guaranteed Limits

35

25

20

20

tPLH

CL=50pF
CL=150pF

24
27

32
35

40
45

48
54

tpHL

CL=50pF
CL =150pF

24
27

32
35

40
45

48
54

24

32

40

48

24

32

40

48

MH2

,

Maximum Propagation Delay.
CCKt to

a

Maximum Propagation Delay.
CCKt to RCO
Maximum Propagation Delay.
CLOAm to

a

Maximum Propagation Delay.
CLOAD+ to RCO

~ CL=50pF
tpHL
tpLH

CL=50pF
CL=150pF

24
27

32
35

40
45

48
54

tpHL

CL=50pF
CL =150pF

24
27

32
35
32

40
45
40

48
54
48

24

32

40

48

26

35

44

52

26

35

44

52

CL =50pF
CL =150pF

24
27

32
35

40
45

48
54

CL =50pF

24

32

40

48

~ CL =50pF
tpHL

Maximum Propagation Delay. I -tpLH
CL =50pF
---RCKt to RCO
tpHL CLOAD=GND
Maximum Propagation Delay.
CCLR+ to

a

Maximum Propagation Delay.
CCLR+ to RCO
Maximum Enable Time.
Gt or <3+ to

a

tPHL

tPLH

24

tPZL
I-----

RL=1kO

39

CL=50pF 21
CL=150pF 24

28
31

44

42
48

CL=50pF 21
CL=150pF 24

28
31

35
44-_._--

42
48

RL=1 kO
~ CL
=50pF

24

28

35

42

28

35

42

12

16

20

24

12

16

20

24

CLOAD ' Low

12

16

20

24

CCKEN+ before
CCKt

12

16

20

24

12

16

24

12

16

20

24

RCKt before
CLOADtt

24

32

40

48

Data A-H
before RCKt

12

16

20

24

th

0

0

0

0

C,N

5

CCK or RCK
High or Low

Minimum
Pulse Width CCLR Low

RCKEN+ to
Minimum
RCKt
Setup Time CCLR+ before
CCKt

ns

ns
- -j

----

..

.-

ns
-

ns

--,Ins

------t-

21

a

ns

ns
--

tPZL
Maximum Disable Time
<3+ or Gt to

---'- 1---

tpLZ

tw

tsu

ns
ns
-

ns
--

ns
--- --

ns

-~

Hold Time
Maximum Input Capacitance

Maximum Output Capacitance COUT Output Disabled
Power Dissipation Capacitance*

10

ns
pF

10

Cpo

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fin,
For AC switching test circuits and timing waveforms see section 2,
tt The RCKt to CLOAD setup time ensures that the counter will see stable data from the register output.
t

719

i
I

I

595'I,1596

KS54HCTlS
KS74HCTLs

8..Bit Shift Registers with
Output:';Latches

FEATURES

DESCRIPTION

• 8-Bit Serial-In, Parallel-out Shift Registers With Storage
• Choice ot3-State ('595) or Open-Drain ('596) Parallel
Outputs
• Shift Register Has Direct Clear
• Function, pin-out, speed and drive compatibility with
54174LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(lOL 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

T,hese devices each contain an 8-bit serial-in, parallel-out
shift register that feeds an a-bit D-type storage register.
The storage register has parallel 3-state ('595) or opendrain ('596) outputs, Separate clocks are provided for
both the shift register and the storage register. The shift
register has aditect-overriding clear, serial input, and serial
output pins for cascading.
.

=

Both the shift register and storage register clocks are
positive-edge triggered. If the user wishes to connect both
clocks together, the shift register state will always be one
clock pulse ahead of the storage register.

=

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output VOltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATION

as

Vee

Oe

PA

aD

SER

Of

G

Of

RCK

OG
OH

SRCK
SRCLR

O'H

GND

FUNCTION TABLE
INPUTS
--

SER

X

SRCK

X

J

--

SRCLR

j

X

RCK
1

X

I

H

QA thru QH outputs disable
-

X

X

X

X

L

QA thru QH outputs enable

X

X

L

X

X

Shift register is cleared.

X

X

First stage of S.R. becomes "L". Other stages store
the data of previous stage, respectively.

L

J

H

H

S

H

X

X

First stage of S.R. becomes "H". Other stages store
the data of previous stage, respectively.

X

L

H

X

X

State of S.R. is not changed.

1---.

x:

FUNCTION

G

,

.-

X

X

X

X

X

X

S
L

---------t'--

X

S.H. data is stored into storage register.

X

Storage register state is not changed.

------

DON'T CARE

c8SAMSUNG
Electronics

720

KS54HCTLS
. KS74HCTLS

5951596
1~

8-Bit Shift Registers with
Output Latches

LOGIC DIAGRAM

(15)

A.

(2)

oc

(3)

00

(4)

OE

(5)

Q

I

F

(6)

Q
G

c8SAMSUNG.
Electronics

721

59·5' 11:96

KS54HCTLS·
KS74HCTlS~, ',,~, I~
;. r

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC trom 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0,5V < Vo < Vee +0.5V) . ,
±70 mA
Continuous Current Through
Vee or GND pins. .
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: '- 55 ° C to + 1 25°C
Input Rise & Fall Times, tr , tf
Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vec=5V±'10% Unless Otherwise Specified)

Ta=25°C

KS74HCTLS
KS54HCTLS
Ta = -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage
(All '595 Outputs and
'596 Q'H Output)

VOH'

VIN=VIH or VIL
lo=- 2OIAA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=201AA
10=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

ItN

VIN=Vee or GND

±0.1

±1.0

±1.0

lolA

loz

Output Enable
=VIH
Vour=Vee or GND

±0.5

±5.0

±10.0

lolA

8.0

80.0

160.0

lolA

2.7

2.9

3.0

mA

Vee Vee -0.1
4.2
3.98

0

~-

Maximum Input
Current
Maximum Output
Leakage Current
Maximum Quiescent

VIN=Vee or GND

.SUPPlrGu~entl-'C~ _lour=OIAA
per input pin

~-"'-----'-~

Additional Worst
Case Supply
Current

J

l:.lee

VI=2.4V
other Inputs:
at Vee or GND
lour=OIAA

c8SAMSUNG
Electronics

722

KS54HCTLS
KS74HCTLS

595.1596
I·

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlons t

8-Bit Shift Registers with
Output Latches
(Input tr , tf~6 ns), HCTLS595, HCTLS596
T. =25°C
Vcc·S.OV

KS54HCTLS
KS74HCTLS
T.= -40°C to +85°C Ta= -55°C to +12SoC
Unit
Vcc=5.0V:t10%
Vcc=S.OV:t 10%
Guaranteed Llmlt.ll

Typ

Maximum Propagation
Delay, SACKt to O'H

15

18

25

30

15

18

25

30

17
20

22
25

28
33

33
39

17
20

22
25

28
33

33
39

18
21

24
27

30
35

36
42

18
21

24
27

30
35

36
42

18
21

24
27

30
35

36
42

CL=50pF

18
21

24
27

30
35

36
42

tPLH
r----- CL=50pF
tpHL

CL=50pF
tPLH
Maximum Propagation
CL=150pF
r----Delay, ACKt to OA thru OH
CL=50pF
tpHL
CL =150pF
Maximum Output Enable
Time, G~ to OA thru OH
('595 only)
Maximum Output Disable
Time, Gt to OA thru OH
('595 only)
Maximum Propagation
Delay, Gt to OA thrc OH
('596 only)
Maximum Propagation
Delay, G~ to OA thru OH
('596 only)
rSACK or ACK
Minimum
Pulse Width
SACLA Low
SACLRt to
Minimum
SACKt
Setup Time SEA to SACKt

CL=50pF
tPZH
CL=150pF
r----- AL=1kO
CL=50pF
tpZL
CL==150pF
tpHZ AL=1 kO
r-----tpLZ
tPLH

tPHL

CL=50pF

18

24

30

36

CL=150pF

21

27

35

42

CL=50pF

18

24

30

36

CL=150pF

21

27

35

42

12

16

20

24

12

16

20
-----

24

12

16

20

24

tw

12

16

20

24

SACKt to
ACKtt

24

32

40

48

Minimum Hold Time

th

-3

0

0

0

CrN

5

Maximum Input Capacitance

tsu

Maximum Output
Capacitance

COUT Output Disabled

Power Dissipation
Capacitance*

Cpo

ns

ns

ns

ns

ns

ns

ns

ns

ns
pF

10

pF
-

f----

pF

* Cpo determines the no-load dynamic power dissipation: PO=CPD Vee' fin.
For AC switching test circuits and timing waveforms see section 2.
t t This setup time ensures the register will see stable data from the register output.
t

723

I

KS54HCTL~
KS74HCTLS

597

8-Bit Shift-Registers with
Input Latches

FEATURES

DESCRIPTION

• 8·Bit Parallel Storage Register Inputs
• shift Register has Direct Overiding Load and Clear
• Function, pin-out, speed and eJrive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• Hlgh-Drive-Current outputs:
10l =8 mA @ Val =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '597 consists of an 8-blt storage latch feeding a
parallel-in, serial-out 8-bit shift register. 80th the storage
register and the shift register have positive-edge triggered
clocks. The shift register also has direct load (from storage)
and clear inputs.

PIN CONFIGURATION

LOGIC DIAGRAM

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

Vee

A
SER
E

SRlOAO

F

RCK

G

SRCK

H

SRCi:A

GNO

Q~

1111

1>----4:>--0..

=8SAMSUNG
Electronics

i

.

724

8-Bit Shift-Registers with
Input Latches
FUNCTION TABLE
INPUTS
SER

SRCK

X
X

FUNCTION

SRCLR

SRLOAD

RCK

X

L

H

X

X

H

J

X

Input register data is stored into S.R.

S.R. is cleared to "L"

L

S

H

H

X

First stage of S.R. becomes ~·L". Other stages store
the data of previous stage, respectively.

H

I

H

H

X

First stage of S.R. becomes "H". Other stages stores
the data of previous stage, respectively.

X

X

X

X

X

X

X

X

X

X

X

X

State of S.R. is not changed.

I
L

Input data on A"'H line is stored into input register
Storage register state is not changed.

Absolute Maximum Ratings*
Supply Voltage Range Vcc, ..
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-O.SV < Vo < Vcc +0.5V) . .
±35 mA
Continuous Current Through
Vcc or GND pins
± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/o C from 65 ° C to 85 ° C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages * , VIN, Your
OV to Vce
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vce or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vcc=5V± 10% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

Typ

KS74HCTLS
Ta= -40°C to +85°C Ta

KS54HCTLS
+125°C Unit

= -55°C to

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OIlA
10= -4mA

Vec -0.1
3.84

Vec -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=201lA
10=4mA
10=8mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vce or GND

±0.1

±1.0

±1.0

IlA

8.0

80.0

160.0

IlA

2.7

2.9

3.0

mA

Maximum Quiescent
~Current

Additional Worst
Case Supply
Current

Icc

bolee

VIN=Vce or GND
10ur=01lA
per input pin
VI=2.4V
other Inputs:
at Vce or GND
10ur=01lA

c8SAMSUNG
Electronics

Vec Vcc -0.1
4.2
3.98
0

I
725

I

KS54HCTLS5,
KS74HCTLS,;

97

.>

(Input tr , tf~6 ns), HCTLS597

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

8-Bit Sh,ft-Registers with"

, 'Input Latches"

T. =25°C
Vc c=5.0V

Conditions t

KS74HCTLS
KS54HCTLS
T.=-400Cto +85°C T.=-55°Cto +125°C
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%
Guar,anteed limits

Typ

Maximum Clock Frequency
Maximum Propagation Delay,
SRCKt to Q'H
Maximum Propagation Delay,
SRLOAD+ to Q'H
Maximum Propagation Delay,

f max

35

25

20

20

tpLH
i----'--=-~

15

18

25

30

tpHL

15

18

25

30

tpLH

I--

CL =50pF

tPHL

-

tpHL

rLRlto O'H
Maximum Propagation Delay,
RCKt to Q'H
Minimum

l"u'S. Width

tPLH

f---

tpHL

RCK or SRCK
High or Low

CL=50pF
SLOAD=Low

RCKt before
SRCKttt

I

SER before
SRCKt

~

30

36

30

36

17

22

28

33

21

29

35

42

21

29

35

42

12

16

20

24

12

16

20

24

12

16

20

24

24

32

40

48

12

16

20

24

tsu

A thru H before
RCKt

Minimum Hold Time

th

12

16

20

24

0

0

0

Maximum Input Capacitance

CIN

0

Power Dissipation Capacitance *

Cpo

ns
ns
ns
ns

ns

SRCLRt before
SRCKt
Setup Time

24
24

tw

SRCLR or
SRLQAD Low

IMln;mum

18
18

MHz

-_.-

5

ns

ns
pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin,
t

For AC switching test circuits and timing waveforms see section 2,

,

t t The RCKt before SRCKt setup time ensures that shift 'register will see stable data comming from the register output.

c8SAMSUNG
Bectronics

726

Octal Bus Transceivers
with 3-StataOutputs
FEATURES

DESCRIPTION

• Function, pin-out, speed and drive compatibility with
54174lS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOl = 24 rnA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These high-speed octal/bus transceivers are designed for
asynchronous two-way communication between data
buses. A direction control input (DIR) controls the flow
direction of data. When DIR is high, data flows from the
A inputs to the B outputs. When DIR is low, data flows from
8 to A. The '643 transfers inverted data from the A bus
to the B bus and non·inverted data from the B bus to the
A bus. The '640 transfers inverted data in both directions.

=

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

PIN CONFIGURATION

FUNCTION TABLE

OIR

Vee

A1

G

Control
Inputs

A2

81

G

A3

82

A4

83

A5

84

A6

85

A7

86

A8

87

GNO

88

c8SAMSUNG
Electronics

I

Operation

DIR

'640

'643

'645

L

L

Inverted data
transmitted from
Bus B to Bus A

Data transmitted
from Bus B
to Bus A

Data transmitted
from Bus B
to Bus.A

L

H

Inverted data
transmitted from
Bus A to Bus B

Inverted data
transmitted from
Bus A tv Bus B

Data transmitted
from Bus A
to Bus B

H

X

Buses isolated
(High-impedance
state)

Buses isolated
(High-impedance
state)

Buses isolated
(High-impedance
state)

I

727

KS54HCTLS
KS74HCTLS:.

640/643/645
.

Octal Bus Transceivers
with 3-State Outputs

LOGIC DIAGRAMS
'640

'643

'645

Absolute Maximum Ratings·
Supply Voltage Range Vee,
-0.5V to +7V
DC Input Diode Current, hK
(V, < -0.5V or V, > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Va < -0.5V or Va > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Va < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
. Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vec
4.5V to 5.5V
DC Input & Output Voltages * , Y,N, VOUT .. OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

728

6401/6431645
/l
/l

KS54HCTLS
KS74HCTLS

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 1 0% Unless Otherwise Specified)
KS74HCTLS
KS54HCTLS
T.= -40°C to +85°C T.= -55°C to +125°C Unit

T.=25°C

Test Conditions

Octal Bus Transceivers
with 3-State Outputs

Typ

Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OlAA
lo=-6mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Mwtimum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20lAA
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

lAA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VOUT=VCC or GND

±0.5

±5.0

±10.0

lAA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

lAA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Icc

Vcc Vcc -0.1
3.98
4.2
0

VIN=VCC or GND
10UT=OlAA
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
louT=O,.,A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditions t

(Input tr , tt-~6 ns), HCTLS640, HCTLS643, HCTLS645
KS74HCTLS
KS54HCTLS
T.=25°C T.= -400C to +85°C T.= -55°C to +125°C
Unit
Vcc=5_0V
Vcc=5.0V:!:10%
Vcc=5.0V:!: 10%
Typ

Maximum Propagation
Delay, A to B, or B to A

Maxim!!.m Output Enable
Time, G or DIR to A or B

tpLH

9 12
12 15

16
21

19
25

tPHL

CL=50pF
CL =150pF

9 12
12 15

16
21

19
25

CL=50pF 30 40
CL=150pF 33 43

50
55

60
65

CL=50pF 30 40
CL =150pF 33 43

50
55

60
65

20 27

34

40

20 27

34

40

tPZH

-

RL=1kO
tPZL

Maximum Output Disable
Time, G or DIR to A or B
Maximum Input CapaCitance
Maximum Output Capacitance
Power Dissipation
Capacitance* (per stage)

Guaranteed Limits

CL=50pF
CL=150pF

~- RL=1kO
tpLZ

CL=50pF

ns

ns

ns

5

pF

COUT Output disabled

10

pF

G=Vcc
G=GND

5
30

CIN

. Cpo

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vcc fin.
2

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

729

I

KS54'HCTLS
KS74HCTLS

646'648
,I

Octa!.~~-StateBus Transceivers

with·"Registers

-

.

FEATURES

DESCRIPTION

•
•
•
•

The '646 and '648 are bi-directional bus transceivers with
D-!lJpe flip-flops and control circuitry to facilitate high speed
multiplexed data transmission. The '646 transmits true data
and the '648 transmits inverted data.

•
•
•
•
•

•

8 bi-directional data paths
Transmits direct or stored data in either direCtion
24-pin 0.3" slim DIP package
Function, pin-out, speed and drive compatibility with
54/74LS logic family
Low power consumption characteristic of CMOS
3-State outputs with high drive current
(I0L 24 rnA @ VOL 0.5V) for direct bus interface
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74AHCT: - 40°C to + 85°C
KS54HACT: - 55°C to + 125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

=

Data can be transmitted directly from one port to the other
in either direction. It also can be stored in the flip-flops from
either or both ports for subsequent transmission to the oppOSite port. Six control inputs govern the data flow:

=

G (output

enable) when high, all outputs are
disabled, isolating the A and B ports. When
low, one port is enabled at a time as determined by the DIR pin.

DIR (direction control) disables A or B outputs per·
mitting the pins to be used as inputs thus determining the direction of a data flow. When
DIR=high, data flows from A to B.
SAB,SBA (data source AB and BA) determines whether
data transmitted is from the data inputs or the
registers associated with those inputs.

PIN CONFIGURATION

CAB

Vee

SAB

CBA

DIR

SBA

A1

G

A2

B1

A3

B2

A4

B3

A5

B4

A6

B5

A7

B6

A8

B7

GND

B8

(21) (3) (1) (23) (2) (22)
G DIR CAB CBA SAB SBA

X

X

X

Real-Time transfer
bu!> B to bus A

c8SAMSUNG
Electronics

CAB,CBA (Clock AB and BA) clocks data from the A inputs and the B inputs, respectively, into their
associated registers. Since the clocks are not
gated with the G and DIR pins, data at the A
and B pins can be clocked into the ffip-flops
at any time.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode cfamps to Vcc and
ground.

(21) (3) (1) (23) (2) (22)
G DIR CAB CBA SAB SBA

H

X

L

Real-Time transfer
bus A to bus B

X

(21) (3) (1) (23) (2) (22)
G DIR CAB CBA SAB SBA

x

x

X
H

X

X

X

t

x

x

x

t

X
X

x

Storage from
A AND/OR B

X

(21) (3)

G

(1)

(23)

(2)

(22)

DIR CAB CBA SAB SSA
x
x
X
H
H
X
H
X

Transfer stored
data to A ANDIOR B

730

KS54HCTLS
KS74HCTLS

646/648

Octal 3-State Bus Transceivers'
with Registers

FUNCTION TABLE
Inputs

Data 11O·

Operation or Function

C=----

G DIR

X
X

CAB

CBA

t

X

X

t
t

X
X

~

rt

X
X

A1 thru A8

81 thru 88

input
input
Not specified Not specified

X
X

X
X

H or L H or L

X
X

X
X

Input

Input

f--o--.

H

SAB SBA

t

'646

'648

Store A, B unspecified
Store B, A unspecified

Store A, B unspecified
Store B, A unspecified

Store A and B data
Isolation, hold storage

Store A and B data
isolation, hold storage

L
L

X
X

X
H or L

X
X

L
H

Output

Input

Real-Time B data to A bus Real-Time B data to A bus
Stored B data to A bus Stored 8 data to A bUS

H
H

X
H or L

X
X

L
H

X
X

Input

Output

Real-Time A data to B bus Real-Time A data to B bus
Stored A data to B bus
Stored A data to B bus

·The data output functions may be enabled or disabled by various signals at the Gand DIR inputs. Data input functions are always enabled,
ie., data at the bus pins will be stored on every low-to-high transition on the clock inputs.

LOGIC DIAGRAMS
'646

DIR
(3)

(21).

SAB

Ll..

(2)

1 OF 8
CHANNELS

-----

I

----I

I
I
I
I
I

I

I
I

_ _ _ ---II

L---------------------~v~------------~--------~/
TO 7 OTHER CHANNELS

'648

OIR

(21)

(3)

SAB
(2)

r----

----I

II

I
I

I

I

I

I

I

L___

____

____

_

I

__ ---I

\~----------------__,v~~-------~-------J/
TO 7 OTHER CHANNELS

c8SAMSUNG
Electronics

731

KS54HCTLS
KS74HCTLS

6. 46II1648

Octal. a."State Bus Transceivers
with>:'Registers
...,

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -O.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current; 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-O.5V <: Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins . .
. . . . . . .. ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages * , VIN, Vour .. OV to Vee
Operating Temperature
·KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf ..

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vec=5V± 10% Unless Otherwise Specified)

Ta =25°C

Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

Maximum Low-Level
Input Voltage

VIL

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20/-IA
10=-6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2O/-lA
10=12mA
10=24mA

Maximum 'Input
Current

liN

Maximum 3-State
Leakage Current

loz

Maximum Quiescent
Supply Current

Ice

Additional Worst
Case Supply
Current

.6.lee

KS74HCTLS
KS54HCTLS
Ta= -40°C to + 85'oC Ta= -55°C to +125°C Unit

2.0

2.0

2.0

V

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

VIN=Vee or GND

±0.1

±1.0

±1.0

/-I A

Output Enable
=VIH
Vour=Vee or GND

±0.5

±5.0

±10.0

/-I A

8.0

80.0

160.0

/-I A

2.7

2.9

3.0

mA

.'

VIN=Vee or GND
10ur=O/-lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=O/-lA

c8SAMSUNG
"
Electronics

Vee Vee -0.1
4.2
3.98
0

732

KS54HCTLS
KS74HCTLS

6461648

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Condltlons t

Octal 3-5tate Bus Transceivers
with Registers
(Input tr • tt~6 ns). HCTLS64f), HCTLS648
KS74Hr.TlS
KS54HCTLS
T.=25°C
T.=-40°C .<1 +85°C T.=-55°C to +125°C
Unit
Vee=5.0V
Vee =- ...OV± 10%
Vce=5.0V± 10%
Typ

Maximum Clock
Frequency

Guaranteed limits

fmax

CL=50pF

40 30

25

20

MHz

Maximum Propagation
Delay, A or B Input
to B or A Output

tpHL

CL=50pF
CL =150pF

14 19
17 22

24
29

29
35

ns

tpHL

CL=50pF
CL =150pF

14 19
17 22

24
29

29
35

Maximum Propagation
Delay, CBA or CAB Input
to A or B Output

tpLH

CL=50pF
CL=150pF

22 30
25 33

37
42

45
51

tpHL

CL=50pF
CL=150pF

22 30
25 33

37
42

45
51

tPLH

CL=50pF
CL=150pF

26 35
29 38

44
49

53
59

to A or B Output
(with A or B High)

tpHL

CL=50pF
CL=150pF

26 35
29 38

44
49

53
59

Maximum Propagation
Delay, SBA or SAB Input

tpLH

CL=50pF
CL=150pF

26 35
29 38

44
49

53
59

tpHL

CL=50pF
CL=150pF

26 35
29 38

44
49

53
59

CL=50pF
CL=150pF

33 45
36 48

56
61

67
73

CL=50pF
CL =150pF

33 45
36 48

56
61

67
73

Maximum Propagation
I Delay, t t SBA or SAB input

I

I(with
to A or B Output
A orB Low)
IMaxim~m

Output Enable
I Time, G or DIR Input to
. A or B Output
Maximum Output Disable
Time, G or DlR Input to
A or B Output

tPZL
~

RL = 1 kO

tPZH
tpHZ
~

tpLZ

RL = 1kO
CL=50pF

26 35

44

53

26 35

44

53

ns

ns

ns

ns

ns

Pulse Duration, Clocks
High or Low

tw

10 13

17

20

ns

Setup Time, A before
CABt or B before CBM

tsu

10 13

17

20

ns

Hold Time, A after CABt
or B after CBM

th

0

ns'

Maximum Input Capacitance

CIN

Maximum Output
ICapacitance

COUT Output Disabled

IPower Dissipation
iCapacitance·

Cpo

a

0

pF

.\.5
10

pF
---

• Cpo determines the no-load dynamic power dissipation: PO=CPD

pF
VCC

2

fin.

t For AC switching test circuits and timing waveforms see section 2,

tt

These parameters are measured with the internal output state of the storage register opposite to that of the bus input.

c8SAMSUNG
Electronics

733

I

KS54HCTLS
KS74HCTLS

6511652
/1

OcflJl"r3..Sta,e' Bus Transceivers
with~~lIegisters

FEATURES

DESCRIPTION

•
•
•
•

These devices conSist of bus transceiver circuits, Ootype
flip-flops, and control circuitry arranged for multiplexed
transmission of data directly from the data bus or from the
internal storage registers. Enable GAB and GBA are provided to control the transceiver functions. SAB and SBA
control pins are provided to select whether real-time or
stored data is transferred. A low input level selects realtime data, and a high selects stored data. The following
examples demonstrate the four fundamental busmanagement functions that can be performed with the octal
bus transceivers and registers.

•
•
•
•
•

•

Independent Registers and Enables for A and B Buses
Multiplexed Real-Time and Stored Data
Choice of Time and Inverting Data Paths
Function, pin-out, speed and drive compatibility with
54/74LS logic family
Low power consumption characteristic of CMOS
3-State outputs with high drive current
(loL = 24 rnA @ VOL = O.5V) for direct bus interface
Inputs and outputs Interface directly with TTL, NMOS
arid CMOS devices
Wide operating Yoltage range: 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

Data on the A or B data bus, or both, can be stored in the
internal D flip-flops by low-to-high transitions at the appropriate clock pins (CAB or CBA) regardless of the select
or enable control pins. When SAB and SBA are in the realtime transfer mQde, it is also possible to store data without
using the internal Ootype flip-flops by simultaneously enabling GAB and GBA. In this configuration each output reinforces its input. Thus, when all other data sources to the
two sets of bus lines are at high impedance, each set of
bus lines will remain at its last state.

PIN CONFIGURATION
CAB

Vee

SAB

CBA
SBA

A1
A2

GBA
B1

A3

B2

A4

B3

AS

B4

A6

B5

A7
A8

B6
B7

GND

B8

(21) (3) (1) (23) (2) (22)
G DIR CAB CBA SAB SBA

X

X

X

Real-Time transfer
bus B to bus A

L

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

(21) (3) (1) (23) (2) (22)
G DIR CAB CBA SAB SBA

H

X

X

Real-Time transfer
bus A to bus B

c8SAMSUNG
Electronics

X

(21) (3) (1) (23) (2) (22)
G DIR CAB CBA SA!,! SBA

X
X
H

X
X
X

t
X
t

X
t

Storage from
A AND/OR B

X
X
X

X
X
X

(21) (3) (1) (23) (2) (22)
G DIR CAB CBA SAB SBA

'L

L
H

X
X

X
X

X
H

H
X

Transfer stored data
to A and/or B

734

KS54HCTLS
KS74HCTLS

6511652

Octal 3-State Bus Transceivers
with Registers

FUNCTION TABLE
INPUTS
GABGBA CAB

DATA I/O·

L
L

H H or L H or L X
t
t
H
X

X

H
H

H

t
t

L
L

X H or L

L
L
H
H

L
L
H
H H

H

L

t

L

X
X
X

OPERATION OR FUNCTION

CBA SABSBA A1 THRU A8 B1 THRU B8

X

'652

X
X

Input

Input

Isolation
Store A and B Data

Isolation
Store A and B Data

X
X·· X

Input
Input

Not specified
Output·

Store A, Hold B
Store A in both registers

Store A Hold B
Store A in both registers

Hold A, Store B
Store B in both registers

Hold A, Store B
Store B in both registers

H or L X

t
t
t

'651

X
X

X Not specified

X"

Output"

Input
Input

X

L
H

Output

Input

X
X

Input

Output

H

Output

Output

H or L X
L
X
or L X
H

H or L H or L H

Real-Time 8 Data to A Bus Real· Time B Data to a Bus
Stored B Data to A Bus
Stored B Data to A Bus
Real-Time A Data to B Bus Real·Time A Data to B Bus
Stored A Data to Bus
Stored A Data to B Bus
IStored A !:lata to B Bus and Stored A Data to B Bus and
Stored B Data to A Bus
Stored B Data to A Bus

• The data output functions may be enabled or disabled by various signals at the GAB and GBA inputs. Data input functions
are always "enabled, .ie., data at the bus pins will be stored on every low-to-high transition on the clock inputs .
.... Select control=L: clocks can occur simultaneously
Select control=H: clocks must be staggered in order to load both registers

I

LOGIC DIAGRAMS
'652

'651
Get.

1211

GSA
G..a

GAB

121)
____

----;1>--+-_ _ _ _ _ _ _ _ _----'

_1~31

----+------D<>-----h

CIA

CBA _1:.:.:23:!..)
122)

S8A
c..a

SAIl

141

I
I

I

- ----------rt.J
------------~vr-----------~
TO 7 OTHER CH_LS

=8SAMSUNG
Electronics

I

------------~vr----------~
TO 7 OTHER CHANNELS

735

KS54HCTLS
KS74HCTLS

6511652.
II

Octal 3-State,,~.:#JIJs,Transceivers
with Registers

Absolute Maximum· Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee,
-0.5V to + 7V
DC Input Diode Current, hK
(VI <-0.5V or VI> Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . . . . .
±70 mA
Continuous Current Through
Vce or GND piOs . . .
........
±250 mA
Storage Temperature Range, Tstg . . . - 65 ° C to + 150 ° C
Power Dissipation Per Package, Pdt ...... 500 rnW

Recommended Operating Conditions
Supply Voltage, Vee .............. 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vee
Operating Temperature
·KS74HCTLS: -40°C to +85°C
Range
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t;, tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10= -6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

3.0

mA

Additional Worst
Case Supply
Current

Alec

VIN=Vee or GND
10uT=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

c8SAMSUNG
Electronics

Vee Vee -0.1
3.98
4.2
0

--

2.7

2.9

736

KS54HCTLS
KS74HCTLS

65-11652

Octal 3-State Bus Transceivers'
with Registers

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Input tr • tf~6 ns). HCTLS651. HCTLS652
KS74HCTLS
KSS4HCTLS
T.=2SoC T.= -40°C to +8S oC T.= -55°C to +12S o C
Unit
Vcc= S.OV:!: 100/0
Vcc=S.OV:!: 10%
Vcc=S.OV

Condltlons t

Guaranteed Limits

Typ

f max

CL=50pF

40

30

25

20

tpLH

CL =50pF
CL=150pF

14
17

19
22

24
29

29
35

tPHL

CL=50pF
CL =150pF

14
17

19
22

21
26

20
26

tpLH

CL=50pF
CL = 150pF

22
25

30
33

37
42

45
51

tpHL

CL=50pF
CL=150pF

22
25

30
33

37
42

45
51

Maximum _Propagation
Delay. SBA or SAB Input to
A or B Output
(with A or B High)

tpLH

CL=50pF
CL=150pF

26
29

35
38

44
49

53
59

tpHL

CL=50pF
CL=150pF

26
29

35
38

44
49

53
59

Maximum Propagation
Delay. SBA or SAB Input to
A or B Output
(with A or BLow)

tpLH

CL=50pF
CL=150pF

26
29

35
38

44
49

53
59

tpHL

CL=50pF
CL=150pF

26
29

35
38

44
49

53
59

CL=50pF 33
CL =150pF 39

45
48

56
61

CL=50pF 33
CL=150pF 39

45
48

56
61

67
73

Maximum Clock Frequency

f--

Maximum Propagation
Delay. A or B Input to
B or A Ouput
Maximum Propagation
Delay. CBA or CAB Input to
A or B Output

Maximum Output Enable
Time. GBA to A or
GABio B
Maximum Output Disable
Time. GBA to A or GAB to
B

tPZL
!-------------

RL=1 kO

tPZH

67
7,3
----

tpHZ

RL=1 kO

26

35

44

53

tpLZ

CL=50pF

26

35

44

53

r-----------

MHz

ns

ns

ns

ns'

.'

'~

ns

ns

Minimum Pulse Width
Clocks High or Low

tw

10
- -I--

13

17

20

ns

Minimum Setup Time. A before
CABt or B before CBAt

tsu

10

13

17

20

ns

Minimum Hold Time. -A after
CABt or B after CBM

th

0

0

ns

Maximum Input Capacitance

a

..
--

CIN

Maximum Output Capacitance COUT Output Disabled
Power Dissipation
Cpo
Capacitance •

--~

5

-

0
r-----

pF
-

10

I

pF
pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin.
t For AC switching test circuits and timing waveforms see section 2_

c8-SAMSUNG
Electronics

737

I

659
.

KS54HCTLS-\1l5811
KS74HCTLS ~i\,.
/1
FEAT\JRES

DESCRIPTION

• Bus Transceivers with Inverting Outputs ('658) or True
Outputs ('659)
• Generates i Parity Bit for A Bus Ind 8 Bus
• Easny Clscadable
• Internll Active Pull-Ups and Pull-Downs
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOL =24 mA @ VOL =O.5V) for direct bus interface
• Inputs and outputs interface direct'y with .TTL, NMOS
and CMOS devices
• Wide operating Yoltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These octal bus transceivers are designed for asynchronous, bidirectional communication between data
buses. The devices transmit data from the A Bus to the
B Bus, or from the B Bus to the A Bus, depending on the
levels at the direction control inputs, GAB and ~BA. These
devices also generate parity outputs, APO and BPO, which
reflect the number of high levels at the A Bus and B Bus,
respectively, taking into account the parity inputs API and
BPI.

PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

GAB

Vee

A1
A2

G8A
B1

A3
A4

B2
83

A5

B4

A6
A7

B5
86

A8
BPI

87
B8

8PO

API

GND

APO

The bidirectional I/O ports feature active circuits on the input
stage that, when the output shared by that pin is disabled,
will maintain the input in the last state taken by the output.
This state will be maintained until changed by activity on
the bus. The advantage of this arrangement is that when
all outputs on the bus are disabled, the inputs will be
prevented from floating, resulting in minimum power dissipation and minimum susceptiblity to noise. This eliminates
any need for external pull-up or pull-down resistors. The
parity inputs API and BPI have similar circuits.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

FUNCTION TABLE
CONTROL
INPUTS
GBA

GAB

L

L

H
1----

H

L

H
+---~--~

L

H

NUMBER OF HIGH
INPUTS ON
A BUS AND API

NUMBER OF HIGH
INPUTS ON
B BUS AND BpI

X

0, 2, 4, 6, 8

Z

H

X

1, 3, 5, 7, 9

Z

L

0, 2, 4, 6, 8

X

H

Z

1,3,5,7,9

X

L

Z

X

X

Z

Z

X

0, 2, 4, 6, 8

X

1,3-,5,7,9

0, 2, 4, 6, 8

X

H

1, 3, 5, 7, 9

X

L

---------~-

c8SAMSUNG
Electronics

OPERATION

OUTPUTS
APO BPO

1-----------_. _-- f------

HCTLS658

HCTLS659

B Data to A Bus

B Data to A Bus

A Data to B Bus

A Data to B Bus

Isolation

Isolation

B Data to A Bus,

B Data to A Bus,
A Data to B Bus

H
L

A Data

to B Bus

738

KS54HCTLS
KS74HCTLS

658/659

Octal Bus Transceivers
with Parity

LOGIC DIAGRAM
GBA

(23)

GAB--~I~l)~--------__________~________~--~~

T ~

~ ~~~----~

(22)

7 INVERTING (NONIVERTING FOR '659)
CHANNELS IDENTICAL TO CHANNEL.
1 ABOVE

I

I

(21)
(20)
(191
(18)
(17)
(16)
(15)

B1

B2

B3
B4
B5

B6
B7

B8

(13)

APO

(10)

BPI

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to +7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins. . . .
±250 mA
StorageTemperature Range, TSlg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ..... 500 mW
• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
suppiy Voltage, Vce . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·. VIN, VOUT
OV to Vce
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times. tr • tf . . . . . . .. Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage leliel (either Vee or GND)

739

Octa/~us

KS54HCTLS'6'S8/659
KS74HCTLS ..,

with Parity

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

Transcelvers
,

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74HCTLS
Ta

KS54HCTLS

= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10= -6mA

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=12mA
10=24mA

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vec or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

Dolce

VIN=Vec or GND
10ur=0",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=0",A

c8 SAMSUI\IG
Electronics

Vee Vee -0.1
4.2
3.98

a

740

KS54HCTLS
KS74HCTLS

6581/659
/1

Octal Bus Transceivers
with Parity

AC ELECTRICAL CHARACTERISTICS
Char.ct..lltlc

Symbol

CondHlon. t

(Input fr. tt<6 ns). HCTLS658. HCTLS659
T. -25°C
Vcc-s.OV

KS74HCTLS
KS54HCTLS
T.- -40°C to +8S·C T. - - SSoC to + 12S·C
UnH
Vcc-S.OV±10%
Vcc-S.OV±10%

Typ

Maximum Propagation
Delay. A or B to B or A

Maximum Propagation
Delay. A or B to B or A

Maxlmum Propa~ation
Delay A or B to
APO or BPO
Maximum Enable Time,
GAB or GBA to
APO or BPO
Maximum Disable Time,
GAB or GBA to
APO or BPO
Maximum Input Capacitance

Gu.r.ntMd LlmH'

tpLH

CL==50pF
CL=150pF

20
23

25
28

30
35

39
45

tpHL

CL=50pF
CL=150pF

20
23

25
28

30
35

39
45

CL==50pF
tPLH CL=150pF

24
27

32
35

40
45

48
54

tpHL

CL=50pF
CL=150pF

24
27

32
35

40
45

tPLH

CL=50pF
CL=150pF

20
23

25
28

30
35

48
54
39
45

tPHL

CL=50pF
CL=150pF

20
23

25
28

30
35

39
45

CL=50pF 20
CL=150pF 23

25
28

30
35

39
45

CL=50pF 20
CL=150pF 23

25
28

30
35

39
45

20
20

25
25

30
30

39
39

tPZH
f--

RL=1kO

tPZL

~ RL=1kO
tPHZ
CIN

CL=50pF

5

ns

ns

ns

ns

ns
ns
pF

Maximum Output
Capacitance

COUT

pF

Power Dissipation
Capacitance *

Cpo

pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
Electronics

741

I

Octal Bus Transceivers
"'ith Parity!,;
,j

"

d

FEATURES

DESCRIPTION

• Bus Transceivers with Inverting Outputs ('664) or True
Outputs ('665)
• Generates a Parity Bit for A Bus and B Bus
• Easily Cascadable
• Internal Active Pull-Ups and Pull-Downs
• Function, pin-out, speed and drive compatibility with
54174lS logic family
• low power consumption characteristic of CMOS
• 3-8tate outputs with high drive current
(IOL 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These octal bus transceivers are designed for asynchronous, bidirectional communication between data
buses. The devices transmit data from the A Bus to the
B Bus or from the B Bus to the A Bus, depending on the
level at the direction control input, DIR. The enable input,
Gcan be used to disable the device so that the buses are
isolated, These devices will also ger)erate parity outputs,
APO and BPO, which reflect the number of high levels at
the A Bus and B Bus, respectively, taking into account the
parity inputs API and BPI.

=

=

.PIN CONFIGURATION

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power IEwels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

Vee

DIR

The bidirectional I/O ports feature active circuitry on the
input stage that, when the output shared by that pin is
disabled, will maintain the input in the last state taken by
the output. This state will be maintained until changed by
the activity on the bus. The advantage of this arrangement
is tht when all outputs on the bus are disabled, the
inputs will be prevented from floating, resulting in minimum
power dissipation and minimum susceptibility to noise. This
eliminates any need for external pull-up or pull-down
resistors. The parity inputs API and BPI have similar circuitry.

G
81

62

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vec and
ground.

63
64
65
66
87

68
API
APO

FUNCTION TABLE

CONTROL
INPUTS

----- ,---_..-

G
L

DIR
L

NUMBER OF HIGH
INPUTS ON
A BUS AND API

NUMBER OF HIGH
INPUTS ON
B BUS AND BPI

X

0, 2, 4, 6, 8

f------------------

X
L

H

1, 3, 5, 7, 9

0, 2, 4, 6, 8

X

1,3,5,7,9
-~

X

=8SAMSUNG
Electronics

---.---~-

APO

BPO

Z

H

-----

Z

1----

I---------~------

t------ e------ r---

H

---~~--.-~-

X
f------

X
-----~--------

X

OPERATION

OUTPUTS
1--

-~--

,--~--.--------

'664

'665

B Data to A Bus

B Data to A Bus

A Data to B Bus

A Data to B Bus

Isolation

Isolation

L

- -----

H

Z

L

Z

Z

Z

- - - - - -"------

r - - - - '------..

742

Octal ~us Transceivers
with PlIrity
lOGIC DIAGRAM
Go

CIR

1231

(1)

-"'"

......

v

-

~-

~
T ....

- "'

......
......

......

I

oJ

~---~~-~;~J
......

_J----r:

Th'lQ

I

~

......

-,,-,.r;-

rv-v- "" 1

L _ .... :-.!6~

_

_

_

_

~

_

I

_

1

7 INVERTING (NONIVERTING FOR '665)
CHANNELS IDENTICAL TO CHANNEL 1
ABOVE

1

(22)

'665

Bl

I

_

~~~.----~--~~--~~

~

i

'664

---

_

J

(21)
Ir----r~--------~~ B2
i20)
B3
(19)
B4
(18)
B5
(17)

i

.

(16)

(15)

(13)

B6

B7

B8

APO

(10)
BPI

Absolute Maximum Ratings*
Supply Voltage Range Vee,
--0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or V, > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±70 mA
Continuous Current Through .
Vee or GND pins
±250 mA
Storage Temperature Range, Tstg . . . -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW
" Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t P0wer Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages", VIN, VOUT
o.V to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55 0 C to + 125 ° C
Max 500 ns
Input Rise & Fall Times, t r , tl
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

743

I

KS54HCTLS
KS74HCTLS

6641665
. /j

,Octal Bus Transceivers
with Parity

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vcc=5V± 1 0% Unless Otherwise Specified)

Ta=25°C
Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=V,H or VIL
10=-20jAA
10= -6rnA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or V,L
10=20jAA
10=12mA
10=24mA

Maximum Input
Current

liN

Maximum 3-State
Leakage Current

loz

Maximum Quiescent
Supply Current

Icc

Additional Worst
Case Supply
Current

~Icc

Vcc Vcc -0.1
4.2
3.98
0.1
0.26
0.39

0.1
0.33·
0.5

0.1
0.4

V

V'N=VCC or GND

±0.1

±1.0

±1.0

jAA

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

jAA

8.0

80.0

160.0

jAA

2.7

2.9

3.0

rnA

VIN=VCC or GND
10UT=UjAA
per input pin
VI=2.4V
other Inputs:
at Vce or GND
10UT=OjAA

c8SAMSUNG
Electronics

0

744

KS54HCTLS
KS74HCTLS

Octal Bus Transceivers
with Parity

6641665

AC ELECTRICAL CHARACTERISTICS
Chiracterlstlc

Symbol

Condltlons t

(Input fr. t,<6 ns). HCTLS664/655
T.-2S·C
Ycc:zS.OY

KS74HCTLS
KS54HCTLS
T.- -40·C to +8S·C T.... -ss·c to +12SOC
Unit
Ycc-S.OY±10%
Ycc-S.OY± 10%

Typ

Maximum Propagation
Delay. A or B to B or A

Maximum Propagation
Delay. A or B to
,.
APO or BPO
Maximum Propagation
Delay. API or BPI to
APO or·BPO·
Maximum Output Enable
Time. G to A or B

tpLH

20
23

25
28

30
35

39
45

tpHL

CL=50pF
CL=150pF

20
23

25
28

30
35

38
36

tPLH

CL=50pF
CL=150pF

24
27

32
35

40
45

48
54

tpHL

CL=50pF
CL=150pF

24
27

32
35

40
45

48
54

tpLH

CL=50pF
CL=150pF

20
23

25
28

30
35

39
45

CL=50pF

20
23

25
28

30
35

39
45

CL=50pF 24
CL=150pF 27
CL=50pF 24
CL=150pF 27

32
35

40
45

48
54

32
35

40
45

48
54

tpHL

~L=150pF

tPZH
I---

RL=1kO

tPZL
Maximum Output Delay
Time. G to A or B
Maximum Output Enable
Time DIRtoA or B .

~
tP'LZ

tPZH
I---

Maximum Input CapaCitance
Maximum. Output
CapaCitance
Power Dissipation
Capacitance *

tPHZ

r--

tHLZ

24

32

40

48

24

22

40

50

CL=50pF 24
CL=150pF 27

32
35

40
45

48
54

CL=50pF 24
CL=150pF 27

32
35

40
45

48
54

20

32

40

48

24

32

40

48

RL=1kO
CL=50pF

RL=1kO

tPZH
Maximum Output Disable
Time. DIR to A or B

GuarantHd Limits

CL=50pF
CL=150pF

RL=1kO
CL=50pF

CIN
COUT Output Disabled

ns

ns

ns

ns

ns

ns

ns

5

pF

10

pF

Cpo

pF
2

* Cpo determines the no·load dynamic power dissipation: Po=Cpo VCC fin.
t For AC switching test Circuits and timing waveforms see section 2.

:8SAMSUNG·
Electronics

745

I

KS54HCTLS ~670.
KS74KCTLS ';'

4-Sy-4 .Register Flies with

with 3-State Output$·t

FEATURES

DESCRIPTION

• Separate Read/Write
Addressing Permits Simultaneous Reading and
Writing
• Expandable to 512 Words of N-bits
• For use as:
- Scratch pad memory
- Buffer storage between processors
- Bit storage in fast multiplication designs
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
10l =8 mA @ VOL =O.5V
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '670 is a 16-blt 3-State Register File organized as 4
words of 4 bits each. Separate Read and Write Address
and Enable Inputs are available, permitting simultaneous
writing into one word location and reading from another
location. The 4-bit word to be stored is presented to f04r
Data inputs. The Write Address inputs (WA and WB) determine the location of the stored word. When the write
enable ( Gw) input is LOW, the data is entered into the addressed location. The addressed location remains
transparent to the data while the Gw is LOW. Data supplied at the inputs will be read out in true (non-inverting)
form from the 3-State outputs. Data and Write Address inputs are inhibited when Gw is HIGH.

PIN CONFIGURATION

02

Vee

03

01

04

WA

RB

WB

RA

Gw

04

GR

03

01

GNO

02

Direct acquisition of data stored in any of the four registers
is made possible by individual Read Address inputs {FfA
and RB). The addrssed word appears at the four outputs
when the read enable (GA) is LOW. Data outputs are in
the HIGH impedance "off" state when the read enable
input is HIGH. This permits outputs to be tied together to
increase the word capacity to very large numbers.
Up to 128 devices can be stacked to increase the word
size to 51 2 locations by tying the 3-State outputs together.
Since the limiting factor for expansion is the output HIGH
current, fu!1her stacking is possible by tying pull-up resistors
to the outputs to increase the IOH current available. Design
of the read enable signals for the stacked devices must
ensure that there is no overlap in the LOW levels which
would cause more than one output to be active at the same
time. Parallel expansion to generate n-bit words is accomplished by driving the Enable and Address inputs of
each device in parallel.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vce and
ground.

FUNCTION TABLES
I~/

READ MODE SELECT TABLE

WRITE MODE SELECT TABLE
OPERATING
MODE
Write Data
Data
Latched

INPUTS

Gw

On

INTERNAL
LATCHES(a)

L
L

L
H

L
H

H

X

no change

NOTE:
a. The Write Address (WA and Ws) to the "Internal
latches" must be stable while Gw is LOW for conventionaloperation.

:8SAMSUNG
Electronics

OPERATING
MIODE

INPUTS

GR

-INTERNAL
LATCHES(b)

OUTPUT

Qn

Read

L
L

L
H

L
H

Disabled

H

H

(Z)

NOTE:
b. The selection of the "internal latches" by Read Address
(RA and Rs) are not constrained by Ow or GA
operation.

746

KS54HCTLS
KS74HCTLS

670

4-8y-4 Regi$ter Files with
with 3-State Outputs

LOGIC DIAGRAM

DATA
INPUT)

I
Rs
WRITE INPUT

GR

RA

--------'
READ INPUT

Absolute Maximum Ratings*
Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI >Vcc +0.5V}
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V}
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vcc +0.5V}
±70 mA
Continuous Current Through
Vcc or GND pins
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW
* Absolute Maximum Ratings are those values beyond

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics
.

t .Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vcc
Operating Temperature
Range
·KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fa~1 Times, t r , tf
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

747

KS54HCTLS
KS74HCTLS

,6.....70

4..l3y-4

Register Files with
with 3-State OutP:CJts.

1

DC ELECTRICAL CHARACTERISTICS
Charact~ristic

Symbol Test Conditions

(Vee=5V± 10% Unless Otherwise Specified)

Ta =25°C
Typ

KS74HCTLS
KS54HCTLS
Ta = -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
, V,H·
Input Voltage

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

V,L

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

V'N=V'H or V,L
lo=- 2OIolA
lo=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

V,N=V,H or V,L
lo= 2OIolA
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

V'N=Vec or GND

±0.1

±1.0

±1.0

lolA

Maximum 3-State
Leakage Current

loz

Output Enable
=V,H
VouT=Vee or GND

±0.5

±5.0

±10.0

lolA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

lolA

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Alec

V'N=Vec or GND
louT=OIolA
per input pin
V,=2.4V
other Inputs:
at Vee or GND
IOUT=OIolA

c8SAMSUNG
Electronics'
.

Vee Vee -0.1
4.2
3.98
0

748

KS54HCTLS
KS74HCTLS

670

4-By-4 Register Files with

with 3-State Outputs

AC ELECTRICAL CHARACTERISTICS
I

Characteristic

Symbol

Conditions t

I

---~--.--

--

~=150pF

40
45

48
54

CL =50pF
tpHL
CL=150pF

20
23

32
35

40
45

48
54

tpLH

CL =50pF
CL =150pF

27
30

36
39

45
50

59
65

tpHL

CL=50pF
CL =150pF

27
30

36
39

45
50

59
65

tpLH

CL =50pF
CL=150pF

27
30

38
39

45
50

59
65

tpHL

CL =50pF
CL =150pF

27
30

36
39

45
50

54
60

CL =50pF 24
CL =150pF 27

32
35

40
45

48
54

CL =50pF 24
CL =150pF 27

32
35

40
45

48
54

24

32

40

48

24

32

40

48

Maximum Propagation Delay,
Gw to Output

IMa::~ pmpagati:De;a~
Data to Output

CL =50pF

tPZH
Maximum Output Enable Time
GR to Output

---

tPZL
--------------

}----

I,:,a"mum Output D,.able T,me
GR to Output

Time

to~",_

WA,WS to Gw
-

-

Hold

tpHZ
tpLZ

,Set up ] _ Do
-

-

- -------

RL =1 kO
CL=150pF

-th

----~

WA, Ws to Gw

RL=1 kO

tsu

On to Gw

---

Maximum Input Capacitance

-CIN

Maximum Output Capacitance

COUT Output disabled

-

-

-

---------

f-------------

[Power Dissipation Capacitance *

Guaranteed Limits

32
35

f-----

I

Time

KS74HCTLS
KS54HCTLS
T. = 25°C
T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vee=5.0V
Vee=5.0V~ 10%
Vee= 5.0V ~ 10%

20
23

tpLH

[Maximum Propagation Delay,
IRA or Rs to Output

f

(Input t r , tf~6 ns), HCTLS670

Typ

!

9

12

15

18

15

18

23

27

0

0

0

0

0

0

0

0

.

ns

ns

ns

ns

ns
ns
ns

5

pF

10

pF

CPD

pF

* CPD determines the no-load dynamic power dissipation: PD=CPD VCC 2 fin
• For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

,

749

I

I
FEATURES

DESCRIPTION

• '679: 12-bit to 4-bil comparator with enable
• '680: 12-bit to 4-bit comparator with latch
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High-Drive-Current outputs:
(IOL =24 rnA @ VOL = 0.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '679 and '680 address comparators simplify addressing of memory boards and/or other peripheral devices. The
four P inputs are normally hard wired with a preprogrammed address. An internal decoder determines what input information applied to the 1 2 A inputs must be low or high
to cause a low state at the output (Y). For example, a
positive-logic bit combination of 0111 (decimal 7) at the
P input determines that inputs A 1 through A7 must be low
and that inputs A8 through A 1 2 must be high to cause the
output to go low. Equality of the address applied at the A
inputs to the pre programmed address is indicated by the
output being low.
The '679 features an enable input (<3). When G is low, the
device is enabled. When G is high, the device is disabled
and the output is high regardless of the A and P inputs.
The '680 features a transparent latch and a latch enable
input (C). When C is high, the device is in the transparent
mode. When C is low, the previous logical state of Y is
latched.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components ..
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

PIN CONFIGURATIONS

'679

'680

Al

Vee

Al

Vee

A2

G

A2

C

A3

Y

A3

Y

A4

P3

A4

P3

A5

P2

AS

P2

A6

Pl

A6

Pl

A7

PO

A7

PO

AS

A12

A8

A12

A9

All

A9

All

GNO

Al0

GNO

Al0

c8SAMSUNG
Electronics

750

KS54HCTLS
KS74HCTLS

,

6791/680
/1

12-8it Address Comparators

LOGIC DIAGRAMS

'679

'680

(1)

Al

,0.2

,0.3

AS

(1)

Al

(21
,0.2

(31
,0.3

(41

(51

(51

,0.6

,0.8

,0.9

,0.10

All

(3)

(41

(61

,0.7

(2)

(7)

(61

(7)

(81
,0.8

(91

(81

I

(9)
,0.9

(111

(11)
,0.10

.(121

(12)

All

,0.12
PO

PO

P2

P2

P3

P3

PI

G

c8SAMSUNG
Electronics

751

6791/680
/1

KS54HCTLS
KS74HCTLS'

12-BitAddrsss 'Comparators

FUNCTION TABLE
'679

'680

~

C

INPUTS COMMON TO '679 AND '680
P3

OUTPUT
A12

y

H
H
H
H

H
H
H
H

L
L
L
L

H
H
H
H

H
H
H
H

H
H
H
H

L
L
L
L

AS A6 A7 A8 A9 A10 A11

P2

P1

PO

A1

A2

A3

A4

L
H
L
H

H
L
L
L

H
H
L
L

H
H
H
L

H
H
H
H

H
H
H
H

H
H
H
H

H
H
H
H

H
H
H
H

H
H
H
H

H
H
H
H

H
H
H
H

H
H
H
H

L
L
L
L

H
H
H
H

L
L
L
L

L
L
L
L

'L
L
H
H

L
L
L
L

H
H
H
H

L
L
L
L

H
H
H
H

L
L
H
H

L
H
L
H

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L
L

H
L
L
L

H
H
L

H
H
H
L

L
L
L
L

H
H
H
H

H
H
H
H

L
L
L
L

L
L
H
H

L
H
L
H

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L
L

L
L
L
L

H
L
L
L

H
H
L
L

H
H
H
L

H
H
H
H

L
L
L
L

L
L
L

H
H
H

H
H
H

H
H
H

L
L
H

L
H
L

L
L
L

L
L
L

L
L
L

L
L
L

L
L
L

L
L
L

L
L
L

L
L
L

H
L
L

H
H
L

H
H
H

L
L
L

L*
L*
L*

L

H

H

H

H

H

L

L

L

L

L

L

L

L

L

L

L

L

L

H

H
L

L

All other combinations

L
H

'679: Any combination

H

'680: Any combination

Latched

Note: These three rows of the function table show combinations that would normally not be used in address comparator applications. The logic symbols above are not valid for all combinations in which P= 12, 13 and 14. If symbols valid for
all combinations are required, starting with the fourth Exclusive-OR from the bottom, change P~9 to P=9 ... 11/13 ...
15, P~10 to P=10/11/14/15, and P~11 to P=11/15.

Absolute Maximum Ratings*
Supply Voltage Range Vee,
-0.5V to +7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Cu"rrent Per Pin, 10
(-O.5V < Vo < Vee +0.5V) . .
±70 mA
Continuous Current Through
Vcc or GND pins . . . . . . . . . . .
± 250 mA
Storage Temperature Range, T519 . . . - 65 ° C to + 150 ° C
Power Dissipation Per Package, Pdt
500 mW
* Absolute Maximu.m Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

c8SAMSUNG
Electronics

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc
........
4.5V to 5.5V
DC Input & Output Voltages * , VIN, Vour .. OV to Vce
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf ..... .
Max 500 ns
Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

752

KS54HCTLS 67n/~80
KS74HCTLS
I "lUI

12-8it Address Comparators

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V± 10% Unless Otherwise Specified)

T. =25°C

Test Conditions

KS74HCTLS
KS54HCTLS
T.=-40°Cto +85°C T.=-55°Cto +125°C Unit
Guaranteed Limits

Typ
Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20uA
10=-6mA

Vcc -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20,..A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

,..A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

,..A

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

.t.lcc

Vcc Vcc -0.1
4.2
3.98
0

VIN=VCC or GND
lOUT = o,..A
per input pin
VI=2.4V
other Inputs:
at Vcc or GND
10UT=0,..A

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

T. '=25°C
Vcc=5.0V

KS74HCTLS
T.= -40°C to +85°C
Vcc=5.0V:t10%

Typ

Maximum Propagation Delay,
G to Y

KS54HCTLS
T.= -55°C to +125°C
Vcc=5.0V:t 10%

CL=50pF
CL=150pF

24 32
27 35

40
45

48
54

tpHL

CL=50pF
CL=150pF

27 32
30 35

40
45

48
54

tpLH

CL=50pF
CL=150pF

21 28
24 31

35
40

42
48

tpHL

CL=50pF
CL =150pF

21 28
24 31

35
40

42
48

tpLH

CL=50pF
CL=150pF

18 24
21 27

30
35

36
42

tpHL

CL=50pF
CL =150pF

18 24
21 27

30
35

36
42

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

·5

Unit

Guaranteed limits

tpLH
Maximum Propagation Delay,
Any P to Y

Maximum Propagation Delay,
Any A to Y

I

(Input t r , tf~6 ns), HCTLS679

ns
-

ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin,
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electrnnir.~

753

:"\'~'~Bit Address 'Comp_rators
AC ELECTRICAL CHARACTERISTICS

(Input t r • tf~6 ns). HCTLS680

Ta=25°C
Vee=5.0V

KS74HCTLS
T. = - 40°C to + 85°C
Vee = S.OV:t 10%

KS54HCTLS
Ta= -55°C to +125°C
Vee=5.0V:t 10%

Symbol

Conditions t

tpLH

CL=50pF
CL=150pF

27
30

36
39

45
50

54
60

tpHL

CL=50pF
CL=150pF

27
30

32
35

40
45

48
64

tpLH

CL =50pF
CL=150pF

24
27

32
35

40
45

48
64

tpHL

CL=50pF
CL=150pF

24
27

32
35

40
45

48
64

tpLH

CL=50pF
CL=150pF

19
22

26
29

32
37

38
44

Y

tpHL

CL=50pF
CL=150pF

19
22

26
29

32
37

38
44

Set up Time
,An before E

tsu

9

12

15

18

ns

th

0

0

0

0

ns

Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

Characteristic

!

Typ

!

I

Maximum Propagation Delay.
Any P to Y

Maximum Propagation Delay.
Any A to Y
I

I

I Maximum

~c to

Propagation Delay.

I Hold

Time
An after E

Unit

Guaranteed Limits

ns

ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 2 fin, .
t For AC switching test circuits and timing waveforms see section 2,

c8SAMSUNG
Electronics

754

,8·Bit Magnitude
Comparators

FEATURES

DESCRIPTION

• Compares Two 8-Bit Words
• '682 has 20kO pull· up Resistors on the Q Inputs

These magnitude comparators perform comparisons of two
eight·bit binary or BCD words. All types provide P=O and
P>O outputs. The '682 features 20·kO pull·uptermination
resistors on the 0 inputs for analog or switch data.

•
•
•
•
•

•

Function, pin-out, speed and drive compatibility with
54/74LS logic family
Low power consumption characteristic of CMOS
High drive current outputs:
(lOL = 24 mA @ VOL = O.5V) for direct bus interface
Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
Wide operating voltage range:. 4.5V to 5.5V
Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage (jue to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLE

PIN CONFIGURATIONS
'682 and '684

INPUTS
P>Q

Vee

PO

p;Q

ao

07

P1

P7

01

06

P2

P6

02

05

P3

P5

03

04

GND

P4

OUTPUTS

DATA

ENABLES

P,O
P=O
P>O
P9

X

X
X
H
H

I

p;;a P50

NOTES: 1. The last 3 lines of the function table apply only to the device
having enable inputs. i.e., ·686.
2. The Po

Vcc

<31
PO

G2

ao

07

p;;o

P1

P7

01
NC

NC
Q6

P2
02

05

P3
03

04

GND

P4

P6
P5

NC-No internal connection

c8SAMSUNG
Electronics

755

KS54HCTL~~,6:'82 1684 1686
KS74HCTLS
Ij
11

',8-8it Magnitude
Comparators

LOGIC DIAGRAMS
'682 or '684

~

PO

00

~
-

.....

~
~
...

~~

V

~

P1

01

P2

02
P3

03
P4

04
P5

05
P6

06
P7

o

(2)

(6)

(19)

-

....

(7)~

~

V

(8)

-

....

I

,9,22
...

F=t-

~

(12)

--

~->-

~

y

(13)

.....

114'~
...
(15)

~t:::1

....

7~

"

.--L.r

F=I }:

I'I

c8SAMSUNG
1:1~""r_...i,,o

(1)

~~

.....

&
(17)

-t>v

~

756

.KS74HCTLS
KS54HCTLS68216841686
LOGIC DIAGRAMS

8·Bit Magnitude
Comparators

(continued)

'686
._-_
....

(23)

~

PO

00
Pl

(3)

(8)

P2

04
PS

os
P6

07

~

-

_.....

I

".122.....
~
~

~~

~
(16)

.

(17)

(20)

.....

....

.....

-"

~

(1)

~~

~

I?E?

18

I

~

t-I

.....

06 '
P7

-

-"

.....

(10)

P3

P4

~&-

-b

"I~

02

03

-

,,~
.....

01

(22)

-~

-"

~
(S)...

~

t:=I j '

II
I

.....

c8SAMSUNG
Electronics

-- ]:

~

I~

.-L..r

757

~S54HCTLS',tQ8"
2"684'/1',6'8' 6;~"'I\,'~~"~,"~'i'
KS74HCTLS,.~/l

8-Bit, M.lJQllitude
Compfl.tlJfArs

Absolute Maximum Ratings*
Supply Voltage Range Vcc, ....... -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vce +0.5V) ......... ±35 mA
Continuous Current Through
Vcc or GND pins .............. " ± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vce
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)
,'f I 1

DC ELECTRICAL CHARACTERISTICS
Parameter

r
i
I

Test Conditions

------- ------- - - - - - - - - - - - - - - 1-----'

. Minimum High-Level
Input Voltage
I

Symbol

---------~-------

Maximum Low-Level
Input Voltage

: Maximum Low-Level
: Output Voltage
: (All Outputs)

VOH

VIN=VIH or VIL
10=- 2O/AA
lo=-6mA

a

- -----Inpuls)

Maximum Input
Current
(All other Inp~) __

f.aximum 3-Slale
Leakage Current

VOL

VIN=VIH or VIL
10=20/AA
10=12mA
10=24mA

2.0

2.0

0.8

0.8

0.8

V
V

0.1
0.33
0.5

0.1
0.4

Vce=Max
VIN=2.7V
VIN=O.4V

-0.2
-0.4

-0.2
-0.4

-0.2
-0.4

mA

liN

VIN=VCC or GND

±0.1

±1.0

±1.0

IAA

loz

Output Enable
=VIH
VouT=Vce or GND

±0.5

±5.0

±10.0

IAA

For '682:
VIN=GND (00-07)
VIN=Vee or GNP
(all other inputs)

3.5

3.5

3.5

mA

For '684 and '688
VIN=Vee or GND
10uT=OlAA

8.0

80.0

160.0

IAA

per input pin
VI=2.4V
other Inputs:
at Vce or GND
10uT=OlAA

2.7

2.9

3.0

mA

-,--

Icc

~----i

, Current
I

2.0

0.1
0.26
0.39

ISupply Current

I Additional Worst
ICase Supply

Guaranteed Limit

Vee -0.1
3.7

Maximum
i Ouiescent

54AHCT
+125°C Unit

= -55°C to

Vee -0.1
3.84

.--------_.-

~--

KS74AHCT
TA= -40°C to +85°C TA

--

Maximum Input
Current,

~82

Typ

VIL

,Minimum High-Level

i (Totem-pole Outputs)

TA=25°C

f - - - 1-----

I------~----f_

IOutput Voltage

(Vcc=5V±10% Unless Otherwise Specified)

r---

VIH

1
,,1/'fli

II

ll.lec

c8SAMSUNG
Electronics

Vee Vcc -0.1
4.2
3.93
0

V

V

758

~."t Magnitude
Comparators
AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Conditionst

Maximum Propagation Delay,
<32 to P«l ('686 Only)

KS74HCTLS
+85°C
Vee=5.0V±10%

=-40°C to

Typ

KS54HCTLS
T.=-55°Cto +125°C
Vee=5.0V± 10%

31
36

38
44

tPHL

CL=50pF
CL=150pF

18 25
21 28

31
36

38
44

tpLH

CL=50pF
CL=150pF

22 32
25 35

38
43

45
51

tPHL

CL=50pF
CL=150pF

22 30
25 33

38
43

45
51

tPLH

CL=50pF
CL=150pF

15 20
18 23

25
30

30
36

tpHL

C,.=50pF
CL =150pF

15 20
18 23

25
30

30
36

tPLH

C=50pF
CL=150pF

~1

18 25
28

31
36

38
44

tpHL

CL=50pF
CL =150pF

18 25
21 28

31
36

38
44

Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

5

Unit

Guaranteed Limits

18 25
21 28

tpLH

Maximum Propagation Delay,
G1 to P=Q ('686 Only)

T. =25°C
T.
Vee = 5.0V

CL=50pF
CL=150pF

Maximum Propagation Delay,
P or Q to P=Q

Maximum ~agation Delay,
PorQto>

.

(Input tr , t,~6 ns), HCTLS682, HCTLS684, HCTLS686

ns

ns

ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 1 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

759

I

6.881689
II

KS54HCTLS
KS74HCTLS

8-Bit Identity Comparators

•

FEATURES

DESCRIPTION

• Compares Two 8-Blt Words
• Choice of Totem-pole ('688) and open-drain ('689)
outputs ('688 is identical to '521)
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High drive current outputs:
(Iol 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized ·for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These identity comparators perform comparisons of two
8-bit binary or BCD words. The output of '688 is totempole while '689's are open-drain.

=

=

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

LOGIC DIAGRAM

PIN CONFIGURATION

G

These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.

Vee

(Positive Logic)

07

p=o

PO
00

07

P1

P7

01

06

P2

P6
05

02

P5

P3
03

04

GND

P4

06
P5
05-----,,~~

P4
04

02 ---- . - -......~-

FUNCTION TABLE

01--

INPUTS
DATA ENABLE
P.Q
G

......~

PO

OUTPUT
P=Q

P=Q
P>Q
P Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo <~Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
StorageTel']lperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per package, Pdt '...... 500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT
OV to Vee
Operating Temperature
Range
-KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55 ° C to + 1 25 ° C
Input Rise & Fall Times, t r , tf ......... Max 500 ns

* Absolute Maximum R.atings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

Typ
Minimum High-Level
Input Voltage
Maximum Low-Level
Input V.olt9ge
Minimum High-Levell
Output Voltage
('688 only)
Maximum Low-Level
Output Voltage
Maximum Input
Current
Maximum 3-State
Leakage Current
('689 only)
Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

KS54HCTLS
KS74HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

VIH

2.0

2.0

2.0

V

VIL

0.8

0.8

0.8

V

Vee -0.1
3.84

Vee -0.1
3.7

V

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

±0.1

±1.0

±1.0

lolA

±0.5

±5.0

±10.0

lolA

8.0

80.0

160.0

lolA

2.7

2.9

3.0

mA

VOH

VIN=VIH or VIL
10=- 2OIolA
10= -6mA

VOL

VIN = VIH or VIL
10= 2OIolA
10=12mA
10=24mA

hN

VIN=Vee or GND

loz

VIN=VIH or VIL

Vee Vee -0.1
4.2
3.98
0

VouT=Vee
Icc

.6. Icc

VIN=Vee or GND
10UT=01olA
per input pin
VI=2AV
other Inputs:
at Vee or GND
10UT=01olA

=8SAMSUNG
Electronics

761

I

KS54HCTLS
KS74HCTLS.

6,.

88/689
/1

~~;:,8-Bit Identity Comp~(ators
(Input tr • tf~6 ns). HCTLS688

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol ('·.lndltlons t

KS74HCTLS
KS54HCTLS
T. =25°C
T.=-40°Cto +85°C T. - -55°C to +125°C
Vee = S.OV
Vee=S.OV% 10%
Vee = 5.0V %10%
Typ

Maximum Propagation Delay.
P to P=Q

Maximum Propagation Delay.
Q to P=Q

Maximum Propagation Delay.
G to P=Q

Guaranteed Limits

tpLH

CL=50pF
CL=150pF

16 22
19 25

28
33

33
39

tpHL

CL=50pF
CL=150pF

16 22
19 25

28
33

33
39

tpLH

CL=50pF
CL=150pF

16 22
19 25

28
33

,33
39

tpHL

CL=50pF
CL=150pF

16 22
19 25

28
33

33
39

tpLH

CL=50pF
CL=150pF

15 20
18 23

25
30

30
36

tpHL

CL=50pF
CL=150pF

15 20
18 23

25
30

30
36

Maximum Input Capacitance

CIN

Power Dissipation Capacitance·

Cpo

Unit

ns

ns

ns

pF

5

pF

• Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 1 fin.
t For AC switching test circuits and timing waveforms see section 2.

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Condltlons t

(Input t r • tf~6 ns). HCTLS689

T. =25°C
Vee=5.0V

KS74HCTLS
KS54HCTLS
T. = -40°C to +85°C T. = -55°C to +125°C
Unit
Vee=5.0V:t 10%
Vee=5.0V:t10%

Typ
Maximum Propagation Delay.
P to P=Q

Maximum Propagation Delay.
to P='O

o

Guaranteed Limits

tpLH

CL=50pF
CL=150pF

24 31
27 34

37
42

43
49

tPHL

CL=50pF
CL=150pF

19 26
22 29

32
37

38
44

tpLH

CL=50pF
CL=150pF

24 31
27 34

37
42

43
49

tpHL

CL=50pF
CL=150pF

19 26
22 29

32
37

38
44

tpLH

CL=50pF
CL=150pF

23 29
27 32

35
40

41
47

tPHL

CL=50pF
CL=150pF

18 24
21 27

30
35

36
42

Maximum Propagation Delay.
G to P=Q
Maximum Input Capacitance

CIN

Power Dissipation Capacitance·

Cpo

5

ns

ns

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo VCC 1 fin.
t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

762

KS54HCTLS
KS74HCt'i..S

793
/794
. /.

8-Bit ',Latch/Register

1

with Readback

FEATURES

DESCRIPTION

• 1/0 port configuration enables output data back onto
input bus
.
• Latch ('793) and and Register (,794) options
• Function, pin-out, speed and drive compatibility with
54/74lS logic far:nily
• low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(IOl 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TIL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTlS: - 40°C to + 85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These are 8-bit latches/registers that allow temporary
storage and retrieval of data on a bus. This operation is
important in control algorithms which make decisions based on the previous status of output controls. Rather than
storing a redundant copy of the output data in memory,
simply reading the register as an I/O port allows the data
to be retrieved from where it has been stored in a '793
or '794, for verification and/or updating.

=

=

The data is loaded in the registers on the positive-edge
of the clock (CLK) for the '794. The data is passed through
the '793 when E is high, and it is latched when E goes low
The output control (OC) is used to enable data on the DO-D7
pins. when OC is low the output of the latches/registers
is enabled on DO-D7, enabling D as an output bus so that
the host can perform a read operation. When OC is high,
DO-D7 are inputs to the latcheslregisters configuring D as
an input bus.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet· maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS dev!ces
without any external components,
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

PIN CONFIGURATIONS
'793

6C

vee

DO

00

01
02

01
02
03
04

FUNCTION TABLES
'793
:

E
L
L
Ht
H

05
06
07
E

OC

Q

D

L
H
L
H

Qo* *
Qo**
D*
D

Output, Q
Input
Output, Q*
Input

In this case the output of the latch feeds the input, and a "race"
condition results.
* * Qo represents the previous "latched" state.
t This transition is not a normal mode of operation and may produce hazards.
*

'794

DC

Vee

DO

00
Q1

01
02
03
04
05
06
07
GNO

02
03
04
05
06
07

ClK

'794
ClK

OC

LorHod
LorHod

L
H
L
H

t
t

Q

Qo
Qo
Qo
D

D
Output, Q
Input
Output, Q*
Input

* In this case the output of the register is clocked to the inputs

and the overall Q output is unchanged at Qo.

c8SAMSUNG
Electronics

763

I

1794

KS54HCTLS 79'3~
KS74HCtL~'.
I,

8-Bit LatcfJ/~lfJgister

with Rea:dback

LOGIC DIAGRAMS
'793

DO

'794

(2)

DO

(2)

01

(3)

02

(4)

01

(3).

02

(4)

03

(5)

03

(5)

04

(6)

D4

(6)

05

(7)

05

(7)

De

(6)

D6

(8)

07

(9)

07

(9)

(11)

c8SAMSUNG
Electronics
.
.

E

00

(11) eLK

KS54HCTLS
KS74HCTLS

7931794
1

8-Bit Latch/Register

with Readback

Absolute Maximum Ratings·
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oCfrom 65°C to 85°C

Supply Voltage Range Vee, ....... -0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins ............... , ±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Recommended Operating Conditions
Supply Voltage, Vee . . . . . . . . . . . . . . 4.5V to 5.5V
DC Input & Output Voltages·, VIN, Vour .. OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, fr, tf ......... Max 500 ns

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vee=5V±10% Unless Otherwise Specified)

Ta=25°C

Test Conditions

Typ

KS74HCTLS
KS54HCTlS
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20,..A
10= -6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20,..A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

,..A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vee or GND

±0.5

±5.0

±10.0

,..A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

,..A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

Alec

VIN=Vee or GND
10ur=OjAA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=0,..A

=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

765

I

1794

'8~8;t L~,fJ:trlJfegis'er

KS54HCTI.,$;<193
KS74HCTLS,'
I.

with

Re.sU.ck.
- -4.,""

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Condltlonst

(Input tr , tt~6 ns), HCTlS793, 794
KS74HCTLS
KS54HCTLS
T.=25°C
T.= -40°C to +85°C T.=-55°Cto +12SoC
Unit
Vee 5.0V
Vcc=5.0V:10%
Vcc ... 5.0V: 10%

=

Typ

Maximum Clock Frequency
('794 only)
Maximum Propagation Delay,
D to Any a ('793 only)

Maximum Propagation Delay,
CLK/E to Any a

Maximum Disable Time,
OC to D
Minimum Pulse Width,
ClK/ E High or low
Minimum
Setup Time
Minimum
Hold Time

D before

D after.

50 40

35

30

Cl=50pF
tplH
Cl=150pF

14 18
17 21

23
28

27
33

tpHl

CL=50pF
Cl=150pF

14 18
17 21

23
28

27
33

tPLH

CL=50pF
Cl=150pF

15 20
18 23

25

30

30
36

tpHL

Cl=50pF
Cl=150pF

15 20
18 23

25
30

30
36

20
23
20
23

25
30
25
30

30
36
30
36

ns

20
20

25
25

30
30

ns

10 15

18

20

ns

8 10

13

15

10 15

18

20

8 10

13

15

0

0

0

tw
E~

('793)

D before
ClKt(,794)
E~

('793)

tau

th

Dafter ClKt
(,794)

Maximum Input Capacitance
Maximum Output Capacitance
Power Dissipation Capacitance *

~

trilax CL=50pF

Cl=50pF 15
tPZH
Cl=150pF 18
Rl=1kO
r-(C=low Cl=50pF 15
tPZl for '793) CL=150pF
18
, tPHZ Rl=1kO, CL=50pF 1- 15
tpLZ (C=low for '793)
15

Maximum Enable Time,
oc to D

Guaranteed Limits

0

ns

ns

ns

ns

CIN

5

pF

COUT
Cpo

10

pF
ns

determines the no-load dynamic power dissipation: PD==CPD Vee' fin,
For AC switching test circuits and timing waveforms see section 2,

• CPD

t

c8SAMSUNG
Electronics

766

KS54HCT!.S
KS7 4HCTLS

821'I~1822

10-Bit Bus Interface Flip-Flops
with 3-State Outputs

Preliminary Specifications

FEATURES

DESCRIPTION

• Functionally Equivalent to AMO's Am29821 and
Am29822
• .Provides Extra Data Width Necessary for Wider Address/Data Paths or Buses with Parity
• Power-Up High-Impedance State
• Function, pin-out, speed and drive compatibility with
54/74lS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive current
(lOl =24 mA @ VOL =O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 1D.bit bus·interface flip·flops feature three-state outputs designed specifically for driving highly-capacitive or
relatively low-impedance loads. They are suitable for implementing wider buffer registers, I/O ports, bidirectional
bus drivers with parity, and working registers.

PIN CONFIGURATIONS
'821

Oc

Vee

10
20
3D
40
50
60
80
90
1(\0

10
20
30
40
50
60
70
80
90
100

3NO

ClK

7D

All of the flip-flops are edge-triggered and Ootype. On the
positive transition of the clock the a outputs on the '821
will be true, and on the '822 will be complementary to the
data input.
A buffered output-control input can be used to place the
ten outputs in either a normal logic state (high or low levels)
or a high-impedance state. The high-impedance state and
increased drive pr-ovide the capability to drive the bus lines
in a bus-organized system without need for interface or
pull-up components. The output control (OC) does not affect the internal operation of the flip-flops. Old data can
be retained or new data can be entered while the outputs
are in the high-impedance state.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internai diode clamps to Vce and
ground.

FUNCTION TABLES
1Each Flip-Flop)
'821

'822

DC
10
20
3D
40
60
70
80
90
100
GNO

Inputs

1--.

Vee

10
20
30
40
50
SO
70
80
90
100
ClK

ClK

0

L
L
L
L

t
t
L

H

H

H

X

L
X
X
X

Q

H
L
00
00

Z

'822

I

Inputs

Output

OC

ClK

0

Q

L
L
L
L

t
t

H

L
H

H

c8SAMSUNG
Electronics

Output

OC

L
H
X

L
X
X
X

00
00

Z

767

I

1O-Bit BuslnMr#st!eFlip~Flops
with 3-State Outputs

KS54HCTLS821'822
KS74HCTLS

'j

LOGIC DIAGRAMS

'821
OC

'822

(1)

oc

eLK

(1)

ClK
(23)
(2)

10

(22)
20

3D

40

(3)

(21)

(4)

(20)

(6)

(7)

70
70

(16)

(9)

80

80

(10)

(20)

(6)

(7)

(8)

(9)

(17)

(16)

(11)

----

c8SAMSUNG
Flp('trnni('!::.

(15)

90
90

(14)
100

(5)

(21)

10

20

30

40

50

60

70

80

80

(15)
90

(4)

(18)

60
60

(8)

(3)

(19)

50
50

(17)

70

40
40

(18)
613

30
3D

(5)

(2)

(22)

20
20

(19)
50

(23)

10

10

(10)

(14)

100

100

(11)

90

100

768

KS54HCTLS
KS74HCTLS

821'822
,~

10-Bit Bus Interface Flip-Flops
with 3-State Outputs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to

Supply Voltage Range Vcc,
-0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vcc +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vcc +0.5V)
±20 mA
Continuous Output Cu'rrent Per Pin, 10
(-0.5V < Vo < Vcc +0.5V)
±70 mA
Continuous Current Through
Vcc or GND pins
± 250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vcc
4.5V to 5.5V
DC Input & Output Voltages·, VIN, VOUT .. OV to Vcc
Operating Temperature
Range
·KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, t r , tf

• Absolute Maximum Ratings are those values beyond
which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

Unused inputs must always be tied to an appropriate logic
voltage level (either Vcc or GND)

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vcc=5V±10% Unless Otherwise Specified)

Ta =2S0C

Test Conditions

85~C

Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta = -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

MiniTum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20!-,A
10=-6mA

Vee -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10 = 20!-,A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

!-,A

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VOUT=VCC or GND

±0.5

±5.0

±10.0

!-,A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

!-,A

2.7

2.9

3.0

mA

~dditional

Worst

I~ase Supply
Current

b.lcc

VIN=VCC or GND
10uT=0!-,A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0!-,A

.=8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

769

I

211822

1 q~'t Bus Interface. Flip..FIOps

KS54HCTLSs'G
KS74HCTLS ~

w1fh~3-State Outputs ',1' ~.~

AC ELECTRICAL CHARACTERISTICS

(Input tr ,

tf~6 ns). HCTlS821, HCTlS822
KS74HellSel.

Characteristic

Symbol

-

Maximum Propagation Delay,
ClK to any Q

CL=50pF

40 35

30

25

tpLH

CL=50pF
CL=150pF

15 20
18 23

25
30

30
36 -

tpHL

CL=50pF
CL=150pF

15 20
18 23

25
30

30
36

SOPF
CL =150pF

18 24
21 27

30
35

36
42

CL=50pF
CL=150pF

18 24
21 27
,,--

30
35

36
42

18 24
-18 24

30

36

30

36

12 16

20

24

,,---

tPZL

i-

RL = 1 kO

-- - - - - f - - - - - -

------~

----

tpHZ RL=1 kO
Maximum Output Disable
Time, OC to any Q
tpLZ CL=50pF
- - - - - - - - - -- - - - Minimum Pulse Width,
tw
ClK High or low

-

----------=--------~--

~

- - - --

- - - - >------- - - - - - - - - - - , , - - - - - -

Minimum Setup Time,
Data before ClKt

-

---

--- - --------- ---

---

5

CIN

Cpo

OC=Vee
OC=GND

----

ns
------

- ---.

ns

24

1---

a a

th

ns

ns
_.-

20

ns

-- _._-"

----

Maximum Output Capacitance COUT OC=Vcc
1-_
Power Dissipation
'Capacitance· (per stage)

MHz

- - r-------

12 16

tsu

c-----------

Minimum Hold Time,
Data after ClKt
- - - - - - - - - - _....•. _-- _.. _-Maximum Input Capacitance

~---~~------.-

f max

tPZL

Maximum Output Enable
Time, OC to any Q

.

Guaranteed limits

Typ

Maximum Operating Frequency

KS54HelLS

T. =2!OC T.= -400C to +85°C T.= -55°C to +125 0C
Unit
Vee= .OV
Vec=5.0V±10%
Vee=5.0V± 10%

Condltlons t

10

a

0

~O

---

---

----

pF

-_._---_._---_._-_...

--1---- - - - 1------------------- - - - - - - - - -

5

ns

-- - - - - - - - - - - -

- -_

..

_._-

pF

----

pF

* Cpo determines the .no-Ioad dynamic power dissipation: Po=Cpo Vee' fin.

t For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

770

KS54H,CTLS
KS74HCTLS

I

8231824
..
1~

9-Bit Bus Interface Flip-Flops
with 3-State Outputs

FEATURES

DESCRIPTION

• Functionally Equivalent to AMO's Am29823 and
Am29824
• Provides Extra Data Width Necessary for Wider Address/Data Paths or Buses with Parity
• Power-Up High-Impedance State
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• low power consumption characteri!5tic of CMOS
• 3·State outputs with high drive current
(IOL 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs Interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTlS: - 40°C to + 85°C
KS54HCTlS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 9-bit bus interface flip-flops feature three-state outputs designed specifically for driving highly-capacitive or
relatively low-impedance loads. They are suitable for implementing wider buffer registers, I/O ports, bidirectional
bus drivers, parity bus interfacing and working registers.

=

With the clock enable (CLKEN) low, the D-type edgetriggered flip-flops enter data on the low-to-high transitions
of the clock. Taking CLKEN high will disable the clock buffer, thus latching the outputs. The '823 has non inverting
o inputs and the '824 has inverting 0 inputs. Taking the
CLR input low causes the nine Q outputs to go low independently of the clock.
'

=

A buffered output-control input (OC) can be used to place
the ten outputs in either a normal logic state (high or low
levels) or a high-impedance state. The high-impedance
state and increased drive provide the capability to drive
the bus lines in a bus-organized system without need for
interface or pull-Up components. The output control does
not affect the internal operation of the flip-flops. Old data
can be retained or new data can be entered while the outputs are in the high-impedance state.
These devices provide. speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

PIN CONFIGURATIONS
'823

oc

Vee

10

10
20
30
40
50

3D

60

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLES

70
80
90

90

'823
INPUT

CLKEN
CLK

Ci:R

GNo

'824

DC
10
20
3D

Vee

4

10
20
30
40
50
60
70
SO

90

a:KEN
CLK

c8SAMSUNG
Electronics

I

OUTPUT

OC

CLR

CLKEN

ClK

0

a

L
L
L
L
H

L
H
H
H

X

X

L
L
H

L
H
L

X

X

X
t
t
X
X

H
L

X
X

00
Z

'824
INPUTS

OUTPUT

OC

ClR

ClKEN

ClK

0

a

L
L
L
L
H

L
H
H
H

X

X

X

L
L
H

t
t

H
L

L
L
H

X

X

X
X

X
X

00
Z

771

I

KS54HCTLS;-S2
KS74HCTLS

3'824'
/j

9-Bit Bus Interfa'ce Flip-Flops
with 3-State Outputs

LOGld DIAGRAMS
'823

'824

(23)

(22)

(211

120)

(181

(UI)

(17)

(US)

(15)

c8SAMSUNG
Electronics
'

10

20

3Q

40

(23)

10

(22)

20

(21)

3Q

1201

40

(19)

50

50

eo

70

eo

(18)

(17)

(18)

(15)

to

eo

70

eo

to

772

KS54HCTLS
KS74HCTLS

823'824
,~

9-Bit Bus Interface Flip-Flops
with 3-State Outputs

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N):, -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ., . . . .
-0.5 to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V)
±20 rnA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vec +0.5V)
±20 rnA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vcc +0.5)
±70 rnA
Continuous Current Through
Vcc or GND pins
±250 rnA
Storage Temperature Range, TSIg ... -65°C to +150°C
Power Dissipation Per Package, Pdt . .
500 mW

Recommended Operating Conditions
Supply Voltage, Vce
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Max 500 ns
Input Rise & Fall Times, tr , tf ...

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logiC
. voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

(Vce=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta= -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2'.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20/AA
10= -6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo= 2O/AA
lo=12mA
lo=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

/AA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vce or GND

±0.5

±5.0

±10.0

/AA

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

/AA

2.7

2.9

3.0

rnA

Additional Worst
Case Supply
Current

b.lee

VIN=Vee or GND
louT=O/AA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0/AA

c8SAMSUNG
Electronics

Vee Vce-0. 1
4.2
3.98
0

773

I

9~/t

KS54HCTLS'823 1824 "
KS74HCTLS "/~
.
AC ELECTRICAL CHARACTERISTICS
CMr.cterlstlc

Bu, Interface Flip-Flops
with3-State Outputs'" H

(Input

Symbol Condltlons t

tr.

t,<6 ns). HCTlS823. HCTlS824

KSS4HCTLS
KS74HCTLS
T.-2S·C
TA- -40·C to +8S·C TA"" -sS·C to +12S·C
Unit
Vcc-5.0V
Vec=S.OV:t 10%
Vee-S.OV:t 10%
Typ

Maximum Operating Frequency
Maximum Propagation Delay.
ClK to any

a

Maximum Propagation Delay.
CLR to Any

a

CL-50pF

40 35

30

25

tpLH

CL-50pF
CL-150pF

15 20
18 23

30
36

tpHL

CL=50pF
CL'""150pF

15 20
18 23

25
30
25
30

tpLH

CL=50pF
CL-150pF

17 22
20 25

28
33

34
40

CL-50pF
18 24
CL-150pF 21 27

30
35

36
42

18 24
21 27

30
35

36
42

18 24

30

36

18 24

30

36

tpZL

Maximum Output Enable
Time. ~ to any

-

Maximum Output Disable
Time. be to any

-tpHZ
tpLZ

a
a

CLR low
Minimum
Pulse Width ClK high or low
ClR Inactive
Minimum
Setup Time 6ata
Before ClK ClKEN high
or low
Minimum Hold Time,
ClKEN or data after ClKt

Gu.r.nteed Limits

fmax

RL-1kO

CL-50pF
CL-150pF

tpZL
RL=1kO
CL=50pF

t.

tau

It!

12 16

20

24

20

24

12 16

20

24

12 16

20

24

20

24

0

0

Maximum Input Capacitance

CIN
Maximum Output Capacitance COUT Output Disabled
Power Dissipation
Cpo OC-Vcc
Capacitance* (per stage)
OC=GND

0

0

ns

ns

ns
ns
I
I

ns

ns

5

pF
pF

5
30

pF

* CPD determines the no-load dynamic power dissipation: PD=CPD Vee' fin,

I
I

10

t For AC switching test circuits and timing waveforms see section 2,

c8SAMSUNG
Electronics

ns

30
36

12 16

12 16

MHz

KS54HCTLS
KS74HCTLS

825/826
. . '{

8-Bit Bus Intef.~~ce Flip"!'Flops
with 3-State (j-tJtputs

FEATURES

DESCRIPTION

• Functionally Equivalent to AMD's Am29825 and
Am29826
• Improved IOH Specifications
• Multiple Output Enables,Allow Multiuser'Control of
the Interface
• Power-Up High-Impedance State
• Function, pin-out, speed and drive compatibility with
54174lS logic family
• Low power consumption characteristic of CMOS
• 3-State outputs with high drive currem .
(IOL 24 rnA @ VOL = O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Cl'laracterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 8-bit bus interface flip-flops leature three-state outputs designed specifically for driving highly-capacitive or
relatively low-impedance loads. They are suitable for implementing multiuser buffer registers, 1/0 ports, bidirectional bus drivers and working registers.

=

PIN CONFIGURATIONS
'825
OCl
OC2
10
20
3D
40
50
60
70
80

Vee

Oc3
10

20
30
40
50
60
70
80

Ci:Fi

CLKEN

GNO

ClK

With the clock enable (CLKEN) low, all D-type edgetriggered flip-flops enter data on the low-to-high transitions
of the clock. Taking CLKEN high will disable the clock buffer, thus latching the outputs. The '825 has non-inverting
D inputs and the '826 has inverting is inputs. Taking the
CLR inputs low causes the eight Q outputs to go low independently of the clock.
Multiuser buffered output-control inputs (OC1 , 0':2, and
OC3) can be used to place the eight outputs in either a
normal logic state (high or low level) or a high-impedance
state. The high-impedance state and increased drive provide the capability to drive the bus lines in a bus-organized
system without need for interface or pull-up components.
The output controls do not affect the internal operation of
the flip-flops. Old data can be retained or new data can
be entered while the outputs are in the high-impedance
state.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

'826
OC1
OC2
10
20
3D
45
50
65
70
85

Vee

Oc3
10

20
30
40
50
60
70
80

CLR

ClKEN

GNO

ClK

c8SAMSUNG
Electronics

775

I

KS54HCTLS
KS74HCTLS

B·25'826
'j

8-Bit Bus Interface Flip-Flops
with 3-State Outputs

FUNCTION TABLES
'826

'825
'nputs

oc·
L
L
L
L
H

ClR
L
H
H
H
X

ClKEN

X
L
L
H
X

Inputs

Output
ClK

X
t
t
X
X

D

X
H
L
X
X

Q

OC·
L
L
L
L
H

L
H
L

00
Z

Output

ClR

ClKEN

ClK

0

Q

L
H
H
H
X

X

X

X

t

t

L
H
X

H
L

L
L
H

X
X

t

X

00
Z

X

* OC = H if any of OC1, OC2, or OC3 are high.

* OC = H if any of OC1, OC2, or OC3 are high.
OC = l of OC1, OC2, and OC3 are low.

OC = l of OC1, OC2, and OC3 are low.

LOGIC DIAGRAMS
'826

'825

(22)

10

b--d">--4-..:.:(2;,...:1)_ 20

(20)

30

b--d:>--+-(_19_)_ 40

b-~~+_(18_)_ 50

c8SAMSUNG
Electronics

(22)

10

(21)

20

(~O)

10--<1 ~>---t--- 30

(19)

40

~.~~----, __
(18_)_ 50

(17)

60

(17)

60

(16)

70

(16)

70

(15)

80

(15)

P------'--- 80

776

KS54HCTLS
KS74HCTLS

8251826
I

8-Bit Bus Interface Flip-Flops
with 3-State Outputs

j

Absolute Maximum Ratings*
t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Supply Voltage Range Vee, ..
-0.5V to + 7V
DC Input Diode Current, ilK
(VI < "':'0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) . .
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, Tstg ... ~65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

Recommended Operating Conditions
Supply Voltage, Vee . .
4.5V to 5.5V
DC Input & Output Voltages", VIN, Your
OV to Vee
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, t r , tf . . . . . . .. Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 1 0% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta = -40°C to +85°C Ta =-55°Cto +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

fy1aximJjm Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN = VIH or VIL
10=-20J.lA
10=-6mA

Vee -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=20",A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum InputCurrent

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

J.lA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
Vour=Vee or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

J.lA

2.7

2.9

3.0

mA

Additional worst
Case Supply
Current

,t,.lee

VIN=Vee or GND
10ur=0J.lA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10ur=0J.lA

=8SAMSUNG
Electronics

Vee Vee -0.1
3.98
4.2
0

I

777

I

KS54HCTL~t'62

51826

81Bit Bus.lnterface . Flip-Flops

wi,h 3-State Outputl

KS74HCTLS···· -

,j~-

.,~...... i .

AC ELECTRICAL CHARACTERISTICS

(Input tr • tf~6 ns), HCTLS825. HCTLS826

Conditions t

KS74HCTlS
KS54HCTlS
T =25°C
V;c=5.0V T.= -40°C to +85°C T.= -55°C to +125°C
Unit
Vcc=5.0V±10%
Vcc=5.0V± 10%

Characteristic

Symbol

Maximum Operating Frequency

fmax

Cl==50pF

40 35

30

25

tplH

Cl==50pF
Cl=150pF

15 20
18 23

25
30

30
36

tpHl

Cl==50pF
Cl ==150pF

15 20
18 23

25
30

30
36

tplH

Cl==50pF
Cl ==150pF

17 22
20 25

28
33

34
40

-Cl==50pF
Cl==150pF

18 24
21 27

30
35

36
42

Cl=50pF
CL==150pF

18 24
21 27

30
35

36
42

18 24

30

36

18 24

30

36

12 16

20

24

12 16

20

24

12 16

20

24

12 16

20

24

12 16

20

24

Typ

Maximum Propagation Delay.
ClK to any Q
Maximum Propagation Delay.
CLR to Any Q
Maximum Output Enable
Time. OC to any Q

tPZl
f----

RL==l kG

tPZl
Maximum Output Disable
Time. OC to any Q
CLR low
Minimum.
Pulse Width ClK high or low
CLR Inactive
Minimum
Setup Time Data
Before ClKf CLKEN high
or Low

tpHZ

RL == 1 kG
r--tpLZ CL==50pF
tw

tsu

Guaranteed limits

MHz

ns

ns

ns
I

ns

I

ns

ns
I

i
i

Minimum Hold Time.
CLKEN or data after ClKt

0

CIN

5

pF

Maximum Output Capacitance COUT

10

pF

Power Dissipation
Capacitance" (per stage)

5
30

Cpo

• Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee' fint For AC switching test circuits and timing waveforms see section 2.

c8SAMSUNG
Electronics

0

0

i ns

th

Maximum Input Capacitance

0

!

i

~

778

KS54HCTLS
KS74HCTLS'

8411°42'
. 10 ,.'

. z "_.

10-Bit Bus Interface D-Type
Latche.s with 3-~tate Outputs

FEATURES

DESCRIPTION

• Bus-Structured Pinout
• Provides Extra Bus D!'i'!!r!~ !.atche!.i
• Necessary for Wider Address/Data Paths or Busr,s
with Parity
• Power-Up High-Impedance State
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption ,characteristic of CMOS
• 3-State outputs with high drive current
(IOl 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: - 40°C tq + 85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 1O-bit bus interface latches feature three state outputs designed specifically for driving highly capacitive or
relatively low-impedance loads, They are suitable for implementing wider buffer registers. I/O ports, bidirectional
nus drivers, and working registers.

=

=

PIN CONFIGURATIONS
'841

oc

Vee

10
20

10
20
30
40
50
60

3D

40
50
60
7D
80
90
100

GNO

70

-----

40
55
60

70
80

The output control does not affect the internal operation
of the latches. Old data can be retained or new data can
be entered while the outputs are off.
These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.

All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vcc and
ground.

FUNCTION TABLES
'841
INPUTS

E

oc

3D

A buffered output control (OC) input can be used to place
the ten outputs in either a normal logic state (high or low
levels) or a high-impedance state. The high-impedance
state and increased drive provide the capability to drive
the bus lines in a bus-organized system without need for
interface or pull-up components.

80
90
100

'842

10
25

The ten latches are transparent Ootype. The '841 has
noninverting data (0) inputs and the '842 has inverting (0)
inputs.

10

20
30
40
50
60
70

80
90

90
105

100

GNO

E

c8SAMSUNG
Electronics
'

OUTPUT.

OC

E

0

Q

L
L
L
H

H
H
L
X

H
L
X
X

H
L

00
Z

'842
INPUTS

OUTPUT

OC

E

0

Q

L
L
L
H

H
H
L
X

H
L
X
X

L
H

00
Z

779

·1

KS54HCTLS

,841/842
.

K~74HCTLS····

10-Slt Bus. Interface D-Type
Latches with 3~State Outputs

LOGIC DIAGRAMS
'a41

oc

'842

(1)

oc

(23/
(2)

(3)

(4)

(21/

(5)

(6)

(T)

(8/

(9)

40

50

60
60

(17)

TO

(16)

TO

80

80

(15)
90

(10)

(11)

c8SAMSUNG
Electronics

TO

eo

90
90

(14/
100

3D

50

(18)

60

30

40

(19)
50

20
20

(20)
40

(2)

10

10

(22)

3D

(23)

10

10

20

(1)

(3)

(4)

(5)

(6)

(T)

(8/

(9)

(10)

(22)

(21/

(20)

(19)

(18)

(17)

(16)

(15)

(14)

100
100

(11)

20

30

40

50

60

TO

80

90

100

780-

KS54HCTLS
KS74HCTLS

841',~'842

10-Bit Bus Interface D-type
Latches with 3-State Outputs

Absolute Maximum Ratings*
- Supply Voltage Range Vee,
.... -O.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous Output CU'r,ent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Curr~nt Through
Vee or GND pins . . . . . . . .
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vcc . . . . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. OV to Vcc
Operating Temperature
Range
-KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times, tr, tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V±10% Unless Otherwise Specified)

Ta =25°C

Symbol Test Conditions

Typ

KS74HCTLS
KS54HCTLS
Ta =-40°Cto +85°C Ta=-55°C to +125°C Unit
Guaranteed Limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=- 2OIAA
10=-6mA

Vce -0.1
3.84

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10= 2OIAA
10=12mA
10=24mA

0.1
0,26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

liN

VIN=Vee or GND

±0.1

±1.0

±1.0

IAA

Maximum 3-State
Leakage Current

loz

Output Enable
=VIH
VouT=Vee or GND

±0.5

±5.0

±10.0

",.A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",.A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

.6.lee

VIN=Vee or GND
10uT=0",.A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=01AA

c8SAMSUNG
Electronics

Vee Vee -0.1
4.2
3.98
0

J81

I

/842

J 0-8it 8us' Interf4c.~,tJ· Type

KS54HCTLS~:~841

KS74HCTLS,

£afcIJeswith3-Stare:,''(}utputs

AC ELECTRICAL CHARACTERISTICS ,(Input tr , tf~6
Characteristic

Condltions t

Symbol

ns), HCTLS841, HCTLS842

KS74HCTLS
KS54HCTLS
T.=25°C T.= -40°C to +85°C T.= -55°C to +125°C
V.cc=5.0V
Vc c =5.0V:t:10%
Unit
Vcc =5.0V:t: 10"10
Typ

tPLH

CL = 50pF

Guaranteed Limits

1 5 20

25

30
Maximum Propagation Delay, ~_---J...::C~L,--=--.:1:...:::5:...:0:..!:p.:.-.F_ _ __+_1.:.-.8=+2=-3=--+------.:3::..:0=------,--+-~-----=3~6-----1 OS
Data to Q
CL =50pF
15 20
25
30
tpHL CL = 1 50pF~
18 23
30
36
tPLH CL =50pF
21 28
35
42
Maximum Propagation Delay. 1--_.......j..::C~L'--=--.:1:...:::5:..::0..':.P.:....F_ _ _+2=-4+3::..:1~____4.:....:0=---_ _-+-___4_8_ _ _--l ns
E to any
tpHL CL=50pF
21 28
35
42
CL =150pF
24 31
40
48

a

30
36
35
42
Maximum Output Enable
ns
Time, OC to any
CL =50pF
18 24
30
36
~_ _ _ _ _ _ _ _ _+-t_PZ_L-+_ _~_C~L_=_1_5_0~P_F~2_1+=2_7~_ _ _3_5_____r-____4_2______ ~-

a

~1=8+=2~4_+_---=3=0---~---3=-6=----~ ns

Maximum Output Disable
Time, OC to any

a

Minimum Pulse Width,
I--E H i g h ,
Minimum Setup Time,
Data before E.l

tsu

Minimum Hold Time,
Data after E~
Maximum Output Capacitance COUT

* Cpo

30

36

15 20

25

30

ns

12 16

20

24

ns

10

12

ns

6

Maximum Input Capacitance
Power Dissipation
Capacitance* (per stage)

18 24

Cpo

.
OC=Vcc
OC=GND

8

5

pF

10

pF

5

pF

30

determines the no-load dynamic power dissipation: PD=CPD Vee'
waveforms see section 2.

fin.

t For AC switching test circuits and timing

=8 !e!'lSUNG

782

KS54HCTLS
KS74HCTLS

843184.4.
1~

9-Bit Bus Interface D-Type
Latches with 3-State Outputs

FEATURES

DESCRIPTION

• Bus-Structured Pinout
• Provide Extra Bus Driving Latches
Necessary for Wider Address/Data Paths or Buses
with Parity
• Power-Up High Impedance
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption chai1lcteristic of CMOS
• 3-State outputs with high drive current
(IOL 24 mA @ VOL O.5V) for direct bus interface
• Inputs and outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 9-bit bus interface latches feature three-state outputs'designed specifically for driving highly capacitive or
relatively low-impedance loads. They are suitable for implementing wider buffer registers, I/O ports, bidirectional
bus drivers, parity bus interfacing and working registers.

=

=

PIN CONFIGURATIONS
'843

oe

vee

10
20
3D
40
50
60

10
20
30
40
50
60
70
80
90 ..

7D

80
90
eLR

PRE

GNO

E

'844

oe
1'0
215
3D
4D
5D
60
70
8D
915

Vee

10
20
30
40
50
60
70
80
90

ClR

PRE

GNO

E

c8SAMSUNG
Electronics

The nine latches are transparent D-type. The '843 has
non inverting data (D) inputs and the '844 has inverting i5
inputs.
A buffered output control (OC) input can be used to place
the nine outputs in either a normal logic state (high or low
levels) or a high-impedance state. The high-impedance
state and increased drive provide the capability to drive
the bus lines in a bus-organized system without need for
interface or pull-up components.
The output control (OC) does not affect the internal operation of the flip-flops. Old data can be retained or new data
can be entered while the outputs are off.
These devices provide speeds and drive capability
equivalent to their LSTTL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TTL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and·
ground.

FUNCTION TABLES
'843
OUTPUT

INPUTS
PRE

CLR

OC

E

D

Q

L
H
H
H
H
X

X
L
H
H
H
X

L
L
L
L
L
H

X
X
H
H
L
X

X
X
L
H
X
X

H
L
L
H

00
Z

'844
OUTPUT

INPUTS
PRE

CLR

OC

E

D

Q

L
H
H
H
H
X

X
L
H
H
H
X

L
L
L
L
L
H

X
X
H

X
X
L
H
X
X

H
L
H
L

H
L
X

00
Z

783

I

KSS4HCTLS
KS74HCTLS

8431844
.

9-Bit Bus,·In'ertsJce D.. .Type
Latches with 3-State Outputs

LOGIC DIAGRAMS
'843

oc

'844
OC ~(...:.11_ _ _q~________--,

(11

PRE':...1..;;.41_~~_

PRE (:....14.:.:.)_~~)-,

CLR :.:.'1..;;.11---c~>,

10

20

3D

40

50

60

(21

10

(3)

20

(4)

30

(5)

40

(6)

(19)50

(7)

(181

50

(2)

(3)

(4)

(5)

(6)

m

60

60

(81

(17) 70

70

(9)

(16) 80

80

90 (10)

(15) 90

90 (10)

70

80

c8SAMSUNG
Electronics

(8)

(9)

(23)10

(22)20

:21)30

(20)40

(19)50

(18) 60

(17) 70

(16) 80

(15) 90

784

KS54HCTLS
KS74HCTLS

843/844

9-Bit Bus Interface D-Type
Latches with 3-State Outputs

Absolute Maximum Ratings *
Supply Voltage Range Vee.
-0.5V to + 7V
DC Input Diode Current, 11K
(VI < -0.5V or VI > Vee +0.5V)
±20 mA
DC Output Diode Current, 10K
(Vo < -0.5V or Vo > Vee +0.5V)
±20 mA
Continuous, Output Clirrent Per Pin, 10
(-0.5V < Vo < Vee +0.5V)
±70 mA
Continuous Current Through
Vee or GND pins
±250 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt
500 mW

t Power Dissipation temperature derating:
Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vee .. '
4.5V to 5.5V
DC Input & Output Voltages *, VIN, VOUT . . OV to Vee
Operating Temperature
Range
-KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times. tr , tf
Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vec=5V± 1 0% Unless Otherwise Specified)

Ta =25°C
Typ

KS74HCTLS
KS54HCTLS
Ta =-40°Cto +85°C Ta =-55°Cto +125°C Unit
Guaranteed limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
10=-20",A
10=-6mA

Vec -0.1
3.84

Vcc -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20",A
10=12mA
10=24mA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=VCC or GND

±0.1

±1.0

±1.0

",A

Maximum 3-State
Leakage CurIent

loz

Output Enable
=VIH
Vour=Vec or GND

±0.5

±5.0

±10.0

",A

Maximum Quiescent
Supply Current

Icc

8.0

80.0

160.0

",A

2.7

2.9

3.0

mA

Additional Worst
Case Supply
Current

~Ice

VIN=VCC or GND
10UT=01-'A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=0",A

c8~SUNG

Vee Vce -0.1
4.2
3.98
0

I

785

I

KS54HCTLS
KS74HCTLS

8431844
1
j

AC ELECTRICAL CHARACTERISTICS
Characteristic

9-Bit Bus Interface D-Type
Latches with 3-State Outputs

Symbol Condltlons t

(Input tr , tf~6ns), HCTLS843, HCTLS844
KS74HCTLS
KSS4HCTLS
T. =25°C
T.= -40°C to +8S o C T.= -55°C to +12SoC
Unit
Vcc=S.OV
Vcc=S.OV±10%
Vcc=S.OV:!: 10%
Typ

. Maximum Propagation Delay,
to

Maximum Propagation Delay,
E to any

a

~imum

Propagation Delay,

PRE to Q
Maximum Propagation Delay,
CLR to Q

tpLH

18 24
21 27

30
35

36
42

tPHL

c'L =50pF
CL=150pF

18 24
21 27

30
35

36
42

tPLH

CL=50pF
CL=150pF

2.1 28
24 31

35
40

42
48

tPHL

CL=50pF
CL=150pF

21 28
24 31

35
40

42
48

tpLH

CL=50pF
CL =150pF

23 30
26 33

38
43

46
52

tPHL

CL=50pF
CL=150pF

23 30
26 33

38
43

18 24
CL=50pF
CL=150pF 21 27

30
35

46
52
36 .
42

CL=50pF
18 24
CL=150pF 21 27

30
35

36
42

18 24

30

36

18 24

30

36

tpZH
Maximum Output Enable
Time, i5C to any

a

Maximum Output Disable
Time, 6C to any

a

Guaranteed Limits

CL= 50pF
CL=150pF

I--

RL=1kO

tPZL
tPHz

t----

tpLZ

RL=lkO
CL=50pF

ns

ns

ns
ns

ns

ns

Minimum Pulse Width,
E High

tw

15 20

25

30

ns

Minimum Setup Time,
Data after E~

tsu

12 16

20

24

ns

Minimum Hold Time,
Data before E ~

th

10

12

ns

Maximum Input Capacitance

6

C,N

Maximum Output Capacitance COUT
Power Dissipation
Capacitance (per stage)
*

t

Cpo

OC=Vcc
OC=GND

8

5

pF

10

pF

5
30

pF

Cpo determines the no-load dynamic power dissipation: PD=CPD Vee' fin.
For AC switching test circuits and timing waveforms see section 2.

c8

SAMSUNG SEMICONDUCTOR

786

KS54HCTLS B'AJ:IOA6
KS74HCTLS "'~/g..,.

8-Bit Bus Interface D-Type
Latches with 3-State Outputs

FEATURE

DESCRIPTION

• 3-state buffer-type outputs drive bus-lines directly
• Bus-structured pinout
• Provides extra bus driving latches necessary for
wider address/data paths or buses with parity
• Low power consumption characteristic of CMOS
devices
• 3-state outputs with high drive current (IOl = 24mA
@ VOL =O.5V) for direct bus interface
• Direct interface capability with TTL, NMOS and
CMOS devices
• Wide operating volage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

These 8-bit latches feature three-state outputs designed
specifically for driving highly capacitive or relatively low impedance loads. They are particularly suitable for implementing buffer registers, 1/0 ports, bidirectional bus drivers,
and working registers.

PIN CONFIGURATIONS

The eight latches are transparent D-type. The '845.has
noninverting data(D) inputs. The '846 has inverting D inputs. Since CLR and PRE are independent of the clock,
taking the CLR input low will cause the eight Q outputs to
go low. Taking the PRE input low will cause the eight Q
outputs to go high. When both PRE and CLR are taken low,
the outputs will follow the preset condition.
The buffered output control inputs (OC1, OC2, and OC3)
ean be used to place the eight outputs in either a normal
logic state (high or low levels) or a high-impedance state.
In the high-impedance state, the outputs neither load nor
drive the bus lines significantly. The high-impendance state
and increased .drive provide the capability to drive the bus
lines in a bus-organized system without need for interface
or pull-up components. The output controls do not affect
the internal operation of the latches. Old data can be retained or new data can be entered while the outputs are
in the high-impedance state.

'845
OC1
OC2
10
20
3D
40
50
60

Vrx

OC3
10
20
30
40
50
60
70
80

7D

8D
ClR

PRE

GND

E

These devices provide speeds and drive capability
equivalent to their LSTIL counterparts and yet maintain
CMOS power levels. The input and output voltage levels
allow direct interface with TIL, NMOS and CMOS devices
without any external components.
All inputs and outputs are protected from damage due to
static discharge by internal diode clamps to Vee and
ground.

'846
OC1

Vrx

&:2
10
20
30
40
50

QC3
10
20
30
40
50

e~

eo

to

70
80

8~

ern

PRE

GNO

E

:8SAMSUNG
Electronics

787

I

KS54HCTLS
KS74HCTLS

84~/O""
J: 10 A6

8-Bit Bus Interface D-Type
Latches with 3-State Outputs

FUNCTION TABLE

'848

'845
INPUTS

OUTPUT

INPUTS

OUTPUT
-~

PRE

CLR

OC1

OC2

OC3

E

D

Q

L

H

H
L

L
L

H
H
H
X

L
L
L
L
L
L

L
L
L
L
L
L

X
X
X
H
H

X
X
X

H
H
H
X

L
L
L
L
L
L

x
x

x

X
X
H

X
H
X

H
X
X

X

PRE

CLR

OC1

OC2

OC3

E

D

Q

H

L

H

H

H

L

L
L

L

L

H

H
H
H
X

H
H
H
X

L
L
L
L
L
L

X
X
X
H
H

X
X
H

X
H
X

L
L
L
L
L
L
H

X
X
X

H
L X
X X
X X
X X

L
L
L
L
L
L

H

L

00
Z
Z
Z

x
x

x
X

X
X

L

X
X
X

L

H
H

L
H

L

X
X
X
X

00
Z
Z
Z

LOGIC DIAGRAMS
0C1
0C2
0C3

(1)

'845

(1)
OC1

(2)

0C2
5C3
PRE (14)

(23)

'846

(2)
(23)

L (13)

10

2'()

3D

40

50

60

70

(3)

(41

(51

(61

(71

(8)

(9)

1221

/21 1

20

20

(21) 20

30

30

(20) 30

(19) 40

40'

(191

50'

(181

(201

(18)

50

(17) 60

(16) 70

(15) 80

c8SAMSUNG
Electronics

(22) 10

10

40

50

(H) 60

70'

(16) 70

(15) 80

788

KS54HCTLS
KS74HCTLS

8451846

8-Bit Bus Interface D-Type
Latches with 3-State Outputs

Absolute Maximum Ratings·
t Power Dissipation temperature derating:

Supply Voltage Range Vee, . . . . . . . -0.5V to + 7V
DC Input Diode Current, hK
(VI < -0.5V or VI > Vee +0.5V) ..... ±20 mA
DC Output Diode Current, 101<
(Vo < -0.5V or Vo > Vee +0.5V) ... , ±20 mA
Continuous Output Current Per Pin, 10
(-0.5V < Vo < Vee +0.5V) ......... ±35 mA
Continuous Current Through
Vee or GND pins .............. " ± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage, Vce .............. 4.5V to 5.5V
DC Input & Output Voltages * , VIN, VOUT .. ' OV to Vee
Operating Temperature
Range
KS74HCLTS: -40°C to +B5°C
KS54HCLTS: -55°C to +125°C
Input Rise & Fall Times, tr , tf ......... Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vee or GND)

which permanent damage to the device may occur.
These are stress ratings only and functional operation
of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

(Vee=5V± 10% Unless Otherwise Specified)

Ta=25°C

Symbol Test Conditions

Typ

KS74HCTLS

KS54HCTLS

Ta = -40°C to +85°C Ta= -55°C to +125°C Unit
Guaranteed limits

Minimum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

O.B

O.B

O.B

V

Minimum High-Level
Output Voltage

VOH

VIN = VIH or VIL
10=- 2OIolA
10=-4mA

Vee -0.1
3.B4

Vee -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
10=201olA
10=4mA
10=BmA

0.1
0.26
0.39

0.1
0.33
0.5

0.1
0.4

V

Maximum Input
Current

hN

VIN=Vee or GND

±0.1

±1.0

±1.0

lolA

B.O

BO.O

160.0

lolA

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

.6.lee

VIN=Vce or GND
10uT=01olA
per input pin
VI=2.4V
other Inputs:
at Vee or GND
10uT=01olA

c8SAMSUNG
Electronics

Vee Vee -0.1
3.98
4.2
0

789

I

1°46
841:
~/a

8-Bit Bus Interface D-Type
Latches with 3-State Outputs

KS54HCTLS
KS74HCTLS·

AC ELECTRICAL CHARACTERISTICS
I

Characteristic

Symbol

(Input t r • tj"';6 ns). HCTLS845

Ta=25°C
Vcc=5.0V

Conditions!

KS74HCTlS
Ta= -40°C to +85°C
Vcc=5.0V±10%

Typ

Propagation D!3lay
I E to Q

~

Delay

~pa~ation

KS54HCTLS
Ta= -55°C to +125°C
Vcc=5.0V± 10%

Guaranteed Limits

23

30

38

46

tpHL

23

30

38

46

~

18

24

30

36

tPHL

18

24

30

36

Propagation Delay
CLR to Q

~

27

36

45

54

tpHL

27

36

45

54

Propagation Delay

~

27

36

45

54

tpHL

27

36

45

54

~

23

30

38

46

tPZL

23

30

38

46

o to

Q

l PRE to Q

Output Enable Time
to Q

OC
...

----~---

~

Unit

ns
ns
ns
ns
ns
- .,----

16

21

26

31

tpLZ

16

21

26

31

up Time
On before E

tsu

12

16

20

24

ns

Hold Time
On after E

0

0

0

ns

Output Disable Time
I OC to Q
[-----------_.

I Set

th

0

Input Capacitance

CIN

5

Power Dissipation Capacitance *

Gpo

ns

pF
pF

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vce' fin.
t For AC switching test circuits and timing waveforms see section 2.

AC ELECTRICAL CHARACTERISTICS
I

Characteristic

Symbol

Conditions t

(Input t r • tl.,,;6 ns). HCTLS846

Ta=25°C
Vcc=5.0V

KS74HCTLS
Ta= -40°C to +85°C
Vcc=5.0V±10%

Typ

KS54HCTLS
Ta= -55°C to +12SoC
Vcc=5.0V± 10%

Guaranteed Limits

~

25

34

42

65

tpHL

25

34

42

65

Propagation Delay
to Q

~

20

27

34

40

tPHL

20

27

34

40

Propagation Delay
CLR to Q

~

26

35

44

53

tpHL

26

35

44

53

Propagation Delay
~RE to 0

~

26

35

44

52

tpHL

26

35

44

52

Output Enable Time
I OC toO

~

19

26

32

19

26

32

38

Output Disable Time
OC to 0

~

Propagation Delay
E to Q

i5

tPZL

Unit

.t-.

38

ns
ns
ns
ns
ns

14

19

24

30

tpLZ

14

19

24

30

. Set up Time
On before E

tsu

12

16

20

24

ns

Hold Time
On after E

th

0

0

0

0

ns

Input Capacitance

CIN

5

Power Dissipation Capacitance *

Cpo

r

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vce' fin.
t For AC switching test circuits and timing waveforms see section 2.

=8SAMSUNG
1::1 __ ..... __ : __

ns

pF
pF

KS54HCTLS
KS74HCTLS

404914050
Ii

Hex Logic Level
Down Converters

FEATURES

DESCRIPTION

• Modified input structure allows voltages up to 15V
• Function, pin-out, speed and drive compatibility with
54/74LS logic family
• Low power consumption characteristic of CMOS
• High drive current outputs:
IOL=8mA @ VOL=0.5V
• Inputs aod outputs interface directly with TTL, NMOS
and CMOS devices
• Wide operating voltage range: 4.5V to 5.5V
• Characterized for operation over industrial and
military temperature ranges:
KS74HCTLS: -40°C to +85°C
KS54HCTLS: - 55°C to + 125°C
• Package options include "small outline" packages
(Available Tape & Reel), standard DIPs.

The '4049 and '4050 have a modified input protection
structure that enable them to be used as logic level
translators which will convert high level logic to a low level
logiC while operating from the low logic supply. For example, 0-15V logic can be corverted to 0-5V logiC when using a 5V Sllpply. The modified input protection has no diode
connected to Vee, thus allowing the input voltage to exceed the supply. The lower zener diode protects the input from both positive and negative static voltages. In
addition the '4049 and '4050 can be used as simple buffers or inverters without level translation.

PIN CONFIGURATION

LOGIC DIAGRAMS

I

'4049
Vee

NC

1Y

6Y

1,A

6A

2Y

NC

2A

5Y

3Y
3A

5A
4Y
4.A

~
1A~

1Y

~
. - ~

2Y

2A

(7)~_
3A-yv--3Y

~~

4A-yv--4Y

(1D~_

5A-~5Y
.. (1~

6A-yv--6Y

FUNCTION TABLE
'4050

1A~1Y
OUTPUT Y

.INPUT
A

'4049

'4050

H

L

H

L

H

L

2A~2Y
3A~3Y

4A~4Y
-.i!2L~(13l

5A--v-5Y

6A~6Y

c8SAMSUNG
Electronics

791

KS54HCTLS
KS74HCTLS

·...

404914050
I

Hex Logic Level
Down Converters

j

Absolute Maximum Ratings·

o

Supply Voltage Range Vee, ....... -0.5V to +7V
DC Input Diode Current, .ilK
.
(VI < -005V or VI >, +1505V)
..... ±20 mA
DC Output Diode Current, lo~-'
~
(Vo < -005V or Vo > Vee +005V)
±20 mA
Continuous Output Current Per Pin, 10
(-005V < Vo < Vee +005V) .. 0 ...... ±35 mA
Continuous Current Through ..
." Vee or GND pins . . . . . . . . . . . . . . .. ± 125 mA
Storage Temperature Range, Tstg ... -65°C to +150°C
Power Dissipation Per Package, Pdt ...... 500 mW':' .

t Power Dissipation temperature derating:

Plastic Package (N): -12mW/oC from 65°C to 85°C

Recommended Operating Conditions
Supply Voltage. Vcc . . . . . . . .
4.5V to 5.5V
DC Input & Output Voltages * • VIN, Vour .. OV to Vcc
Operating Temperature
Range
KS74HCTLS: -40°C to +85°C
KS54HCTLS: -55°C to +125°C
Input Rise & Fall Times. tr • tf ........ Max 500 ns

* Absolute Maximum Ratings are those values beyond

Unused inputs must always be tied to an appropriate logic
voltage level (either Vec or GND)

which permanent damage to the device may occur.
,These are stress ratings only and functional operation
. of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability.

DC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol Test Conditions

(Vec=5V± 10% Unless Otherwise Specified)

Ta =.25°C

KS74HCTLS
KS54HCTLS
Ta= -40°C'to +85°C Ta= -55°C to +125°C Unit
Guaranteed Limits

Typ
MinifTIum High-Level
Input Voltage

VIH

2.0

2.0

2.0

V

Maximum Low-Level
Input Voltage

VIL

0.8

0.8

0.8

V

Minimum High-Level
Output Voltage

VOH

VIN=VIH or VIL
lo=-20",A
10= -4mA

Vee -0.1
3.84

Vce -0.1
3.7

V

Maximum Low-Level
Output Voltage

VOL

VIN=VIH or VIL
lo=20J.lA
10=4mA
lo=8mA

0.1
0.33
0.5

0.1
0.4

Maximum Input
Current

liN

VIN=Vee or GND
VIN=15V

0.1
0.26
0.39
±0.1

±1.0
±10.0

±1.0
±10.0

J.lA

2.0

20.0

40.0

J.lA

2.7

2.9

3.0

mA

Maximum Quiescent
Supply Current
Additional Worst
Case Supply
Current

Icc

t.lce

Vce Vce -0.1
402
3098
0

VIN=Vec or GND
louT=O",A
per input pin
VI=2.4V
other Inputs:
at Vee or GND
lour=OJ.lA

I

I

AC ELECTRICAL CHARACTERISTICS
Characteristic

Symbol

Conditions t

(Input t r ,

Ta=25°C
Vcc=5.0V

tf~6 ns). HCTLS4049. HCTLS4050
KS74AHCTLS
Ta =-40°Cto +85°C
Vee = 5.0V:!: 10%

Typ

Maximum Propagation Delay

tPLH

t----

CL=50pF

tpHL
Maximum Input Capacitance

CIN

Power Dissipation Capacitance *

Cpo

V

KS54HCTLS
Ta= -55°<6 to +125°C
Vee=5.0V:!: 10%

Unit

Guaranteed Limits

13

17

21

26

13

17

21

26

5

pP'

(per gate)

* Cpo determines the no-load dynamic power dissipation: Po=Cpo Vee 2

ns

pF
fin.

t For AC switching test circuits and timing waveforms see section 2.

=8~~SUNG

792

PACKAGE DIMENSIONS
1. PLASTIC PACKAGES
14·Pin DIP

Units: mm

Units: mm

16·Pin DIP

E"":J~: l1L1_
~

""

o

~0-100

L
.~

::

.!.J2~
~
1.77

~
0.30

WWWWI'~

U.
~'~

4.06

4.06

2.92

3.43

~92

~ h- --H-~~:

3.43

2.54 I
I
~

~~
0.36

~.~~

0.51
1.02

0.56

20·Pin DIP

Units: mm

24·Pin DIP

Units: mm

t:::::::::~
:b[: lJ4t
~'-'"
-J~15
~

1.77

wvwwvw

0.30

2.54 I
I
~

~~
0.36
0.56

=8SAMSUNG
Electronics

~~4.19
5.07

-L
4.06
I ".3
2.92
3.43
0.51
1.02

3.17

2.54
TYP

~~

3.93

0.36

0.51
1.02

795

I

PACKAGE DIMENSIONS

14-Pin SOP

mm

16-Pin SOP

Unit: mm

Unit: mm

24-Pin SOP

Unit:

Unit:

I~:::::JI~~
~

II

0.49

~
8.75

20-Pin SOP

mm

~"

2.65

--l I ~;:

c8SAMSUNG
Electronics
:

796

PACKAGE DIMENSIONS
2. CERAMIC PACKAGES
14-Pin Ceramic DIP

DIM

Mlllmetora
Min
Ma.

"
8

0.38

508
0.58

8.
C

1:40

1.78

o
E

E.

DIM

"

B
B.
C

0.20
0.38
18.16 18.56
6.10' 749

0

E

MIII",-'".
M..
Min

-

508
058
1.78

0.38
1.40
0.20
19.05
610

038
19.94
7.49

E.
F

7.62 1003
2.54'

L

3.181 4.19

L

0.51
1 91

0

318
0.51

419

o

S

0.51

114

S

I

1.02
2.29

Units: mm

I

24-Pin Ceramic DI·P

1.02

Units: mm

DIM

Mllimetora
Min
Max

DIM

MI"metora
Min
....

"

4.06
0.38

5.08
0.53

1.14

1.52

"
B
B.

4.06
0:38
1.14

8
B.
C

o

c8SAMSUNG
Electronics

Units: mm

7.62 10.03
2.54

F

20-Pin Ceramic DIP

16-Pin Ceramic DIP

Units: mm

508
053
1.52

0.20
0.38
25.78 25.83

C

eo

E

7.24

7.75

7.77
7.98
2.54

E.

7.77

7.98

F

2.54

3.731 401
0.38
0.89

L

o

3.731 4.01
0.508 1 1 771

1 114

S

1851 193

E
E.
F

6.10

L

o
S

0.51

8

o

0.20 038
31.50 32.64

797

I

ORDERING INFORMATION
The ensure prompt and accurate processing of your order, please use the product code system as described in the following example.

KS

T
-'

SAMSUNG IDENTIFICATION P R E F I X - - - - -

74

AHCT

xxx

N

J

OPERATING TEMPERATURE RANGE DESIGNATiON-----------J
COMMERCIAL: 74 (-40 to +85°C)
MILITARY: 54 (-55 to +125°C)

PRODUCT FAMILY DESIGNATION - - - - - - - - - - - - - - '
GENERIC PART N U M B E R - - - - - - - - - - - - - - - - - . J
PACKAGE DESIGNATOR - - - - - - - - - - - - - - - - - N: DIP
D:SOP
.
DT: SOP(Tape & Reel)
Pin

Quantity/Reel

SO-14

3000
~--'-

SO-16

3000

SO-20

1000

SO-24

1000

c8SAMSUNG
Electronics

798

I

I}

SAMSUNG SEMICONDUCTOR SALES OFFICES-U.S.A.
CALIFORNIA
22837 Ventura Blvd.
Suite 305
Woodland Hills, CA
91367
(818) 346-6416
FAX: (818) 346-6621

2700 Augustine Drive
Suite 198
Santa Clara, CA 95054
(408) 727-7433
FAX: (408) 727-5071

ILLINOIS

MASSACHUSETTS

TEXAS

901 Warrenville Road
Suite 120
Lisle, IL 60532-1359
(312) 852-2011
FAX: (312) 852-3096

20 Burlington Mall Road
Suite 205
Burlington, MA 01803
(617) 273-4888
FAX: (617) 273-9363

15851 Dallas Parkway
Suite 745
Dallas, TX 75248-3307
(214) 239-0754
FAX: (214) 392-4624

SAMSUNG SEMICONDUCTOR REPRESENTATIVES
U.S.A. and CANADA
CONNECTICUT

ARIZONA
HAAS & ASSOC. INC.
77 441 East Butherus Drive
Suite 300
Scottsdale, AZ 85260

TEL: (602) 998-7195
FAX: (602) 998-7869

PHOENIX SALES
257 Main Street
Torrington, CT 06790

TEL: (203) 496-7709
FAX: (203) 496-0912

FLORIDA
CALIFORNIA
QUEST REP INC.
9444 Farnham St.
Suite 107
San Diego, CA 92123

TEL: (619) 565-8797
FAX: (619) 565-8990

MEC
700 W. Hillsboro Blvd.
Bldg. 4, Suite 204
Deerfield Beach, FL 33441

SYNPAC_
3945 Freedom Circle
Suite 650
Santa Clara, CA 95054

TEL: (408) 988-6988
FAX: (408) 988-5041

MEC
511 Carriage Road
Indian Harbour Beach,
FL 32937

WESTAR REP COMPANY
2472 Chambers Road
Suite 100
Tustin, CA 92680

TEL: (714) 832-3325
FAX: (714) 832-7894

MEC
830 North Atlantic Blvd.
Suite B401
Cocoa Beach, FL 32931

WESTAR REP COMPANY
25202 Crenshaw Blvd.
Suite 217
Torrance, CA 90505

TEL: (213) 539-2156
FAX: (213) 539-2564

TEL: (407) 332-7158
(407) 773-1100
FAX: (407) 830-5436

TEL: (407) 799-0820
FAX: (407) 799-0923

TEL: (813) 522-3433
FAX: (813) 522-3993

ILLINOIS
IRI
8430 Gross Point Road
Skokie, I L 60076

CANADA
TERRIER ELEC_
145 The West Mall
Etobicoke, Ontario, Canada
M9C 1C2

TEL: (416) 622-7558
FAX: (416) 626-1035

TERRIER ELEC_
3700 Gilmore Way, 106A
Burnaby, B.C. Canada
V5G 4M1

TEL: (604) 433-0159
FAX: (604) 430-0144

TERRIER ELEC.
6600 Transcanadienne
TEL: (514) 695-4421
Suite 750-17
FAX: (514) 695-3295
Pointe Claire, Quebec, Canada
H9R 452

COLORADO
CANDAL INC.
7500 West MiSSissippi Ave.
Suite A-2
Lakewood, CO 80226

MEC
1001 45th, N.E.
St. Petersburg, FL 33703

TEL: (305) 426-8944
FAX: (305) 426-8799

TEL: (312) 967-8430
FAX: (312) 967-5903

INDIANA
STS & ASSOC_ INC_
3003 E. 96th st.
Suite 102
Indianapolis, IN 46240

TEL: (317) 844-9227
FAX: (317) 844-1904

MARYLAND
ADVANCED TECH SALES
809 Hammonds Ferry Rd.
Suite D
Linthicum, MD 21090

TEL: (301) 789-9360
FAX: (301) 789-9364

MASSACHUSETTS
TEL: (303) 935-7128
FAX: (303) 935-7310

NEW TECH SOLUTIONS, INC.
111 South Bedford Street
Suite 102
Burlington, MA 01803

TEL: (617) 229-8888
FAX: (617) 229-1614

...

C:CSAMSUNG
. . Electronics

801

I

l'P

S"W'

SAMSUNG SEMICONDUCTOR REPRESENTATIVES
OREGON

MICHIGAN
JENSEN C.B.
2145 Crooks Rd.
TroY,MI48084

TEL: (313) 643-0506
FAX: (313) 643·4735

MINNESOTA
IRI
1120 East 80th Street
Bloomington, MN 55420

EARL & BROWN CO.
9735 SW. Sunshine Ct.
Suite 500
Beaverton, OR 97005

TEL: (503) 643·5500
FAX: (503) 644·9230

PENNSYLVANIA
TEL: (612) 854·1120
FAX: (612) 85~·8312

RIVCO JANUARY INC.
RJI Building
78 South Trooper Road
Norristown, PA 19403

TEL: (215) 631·1414
FAX: (215) 631·1640

NEW JERSEY
PUERTO RICO
NECCO
2460 Lemoine Avenue
Ft. Lee, NJ07024

TEL: (201) 461·2789
FAX: (201) 461·3857

DIGIT·TECH
P.O. Box 1945
Calle Cruz #2
Bajos, San German 00753

TEL: (809) 892·4260
FAX: (809) 892:3366

NEW ,MEXICO
S.W. SALES, INC.
7137 Settlement Way, N.W.
Albuquerque, NM 87120

TEXAS
TEL: (505) 899·9005

NEW YORK
T-5aUARE
6443 Ridings Road
Syracuse, NY 13206

TEL: (315) 463·8592
FAX: (315) 463·0355

T·SaUARE
7353 Victor·Pittsford Road
Victor, NY 14564

TEL: (716) 924·9101
FAX: (716) 924·4946

NORTH CAROLINA
GODWIN & ASSOC,
1100 Logger Ct.
Suite B102
Raleigh, NC 27609
GODWIN & ASSOCIATES
2812 Oak Leigh Drive
Charlotte, NC 28213

S.W. SALES INC.
2267 Trawood, Bldg. E3
EI Paso, TX 79935

TEL: (915) 594·8259
FAX: (915) 592·0288

VIELOCK ASSOC.
720 E. Park Blvd.
Suite 102
Plano, TX 75074

TEL: (214) 881·1940
FAX: (214) 423·8556

VIELOCK ASSOC.
9600 Great Hills Trail
Suite 150·W
Austin, TX 78759

TEL: (512) 345·8498
FAX: (512) 346·4037

UTAH
TEL: (919) 878·8000
FAX: (919) 878·3923

ANDERSON & ASSOC.
270 South Main, #108
Bountiful, UT 84010

TEL: (801) 292~8991
FAX: (801) 298·1503

VIRGINIA
TEL: (704) 549·8500
FAX: (704) 549·9792

ADVANCED TECHNOLOGY SALES, INC.
406 Grinell Drive
TEL: (804) 320·8756
Richmond, VA 23236
FAX: (804) 320·8761

OHIO
WASHINGTON

BAILEY, J.N. & ASSOC.
129 W. Main Street
New Lebanon,OH 45345

TEL: (513) 687·1325
FAX: (513) 687·2930

BAILEY, J.N. & ASSOC.
2679 Indianola Avenue
Columbus, OH 43202

TEL: (614) 262·7274
FAX: (614) 262-0384

BAILEY, J.N. & ASSOC.
1667 Devonshire Drive
Brunswick, OH 44212

TEL: (216) 273·3798
FAX: (216) 225·1461

c8SAMSUNG
EleCtronics

EARL & BROWN CO.
2447 A 152nd Ave. N.E.
Redmond, WA 98052

TEL: (206) 885·5064
FAX: (206) 885·2262

WISCONSIN
IRI
631 Mayfair
Milwaukee, WI 53226

TEL: (414) 259·0965
FAX: (414) 259-0326

802

SAMSUNG SEMICONDUCTOR SALES OFFICES-EUROPE
SAMSUNG
SEMICONDUCTOR
EUROPE GmbH

Mergenthaler Allee 38·40
06236 Eschborn
(West Germany)
Tel: 06196/9009'()

Fax: 0196/9009·89

PARIS

MILANO

MONCHEN

Centre d'Affaires La
Boursidiere RN 186, Bat.
Bourgogne, BP 202
F·92357 Le Plessis·Robinson
(France)
Tel: 0033·1·40 94 07 00
Fax: 0033·1·40 94 02 16

Viale G. Matteottl, 26
1·20095 Cusano Mllanino
(Italy)
Tel: 0039·2·6 13 28 88
Fax: 0039·2·6192279

Carl·Zeiss·Ring 9
0-8045 Ismaning
(West Germany)
Tel: (49) 0·89 96 48,38
Fax: (49) 0·89 96 48 73

SAMSUNG SEMICONDUCTOR REPRESENTATIVES
EUROPE
AUSTRIA

GERMANY (WEST)

SATRON HANDELSGES. MBH
Hoffmeistergasse 8-10/1/5 TEL: 0043·222·87 30 20
A·1120 Wien
FAX: 0043·222·85 95 93
TLX: 047·753 11 85 1

TERMOTROa.. GmbH
Pilotystr 4,
0·8000 MOnchen 22

BELGIUM
CIS ELECTRONICS NV
Heembeekstraat 111
B·1120 Brussels

SILCOM ELECTRONICS VERTRIEBS GmbH
Neusser Str. 336·338
TEL: (49)'()·2161-607 52
0·4050 M6nchengladbach FAX: (49).()·2161-6516·38
TLX: 85 2189

TEL: 0032·2·2442974
FAX: 0032·2·2 42 89 30
TLX: 046·2 58 20

TEL: (49)·0·89·2303 52 52
FAX: (49).()·89·2303 52 80
TLX: 178984 53

ING. THEO HENSKES GmbH
Laatiener Str. 19
TEL: (49).()·511·86 50 75
Postfach 72 12 26
FAX: (49)'()·724979 93
0·3000 Hannover 72
TLX: 92 35 09

DENMARK
EXATEC ALS
Oortheavj 1·3
OK·24oo Kopenhagen

TEL: 00453·1·19 1022
FAX: 00453·1 1931 20
TLX: 27253

TEL: (49)-0·89-61 30 303
FAX: (49)-0-89-61 31 668
TLX: 5 21 61 87

MSC VERKAUFSBORO MITTE
Wormser Str. 34
TEL: (49)-0·62·332 66 43
Postfach 37
FAX: (49)·0·332 02 98
0-6710 Frankenthal
TLX: 46 52 30

FINLAND
INSTRU COMPONENTS
P.O. Box 64, Vitikka 1
SF'()2631·ESPOO
Helsinki

ASTRONIC GmbH
Grunwalder Weg 30
0·8024 Oeisenhofen

TEL: 00358-0·5 28 43 25
FAX: 00358'()·5 28 43 33
TLX: 057·12 44 26

MICRONETICS GmbH
Wail Our SUidter Str. 45
0·7253 Renniilgen

TEL: (49)·0·7159·60 19
FAX: (49).()·715 951 19
TLX; 72 47 08

ITALY

FRANCE
ASIA MOS (OMNITECH ELCCTRONIQUE)
Batiment Evolic 1 165,
TEL: 0033·1·47 60 1247
Boulevard Oe Valmy
FAX: 0033·1·47 60 1582
F·92705Colombes
TLX: 042-61 38 90

DIS. EL. SPA
Via Orbetello 98
1·10148 Torino

SONEL·ROHE (SCAIB)
6, Rue Le Corbusier
Silic 424
F·94583 Rungis, Cedex

MOXEL S.R.L.
Via C. Frova, 34
TEL: 0039·2·61 29 05 21
1·20092 Cinisello Balsamo FAX: 0039-2-6172582
TLX: 043·35 20 45

TEL: 0033·1·46 86 81 70
FAX: 0033·1·45 60 55 49
TLX: 042·20 69 52

c8SAMSUNG
Electronics

TEL: 0039·1·12 20 15 22
FAX: 0039-1·12 16 59 15
TLX: 043·21 51 18

803

I

SAMSUNG SEMICONDUCTOR REPRESENTATIVES
THE NETHERLANDS

UNITED KINGDOM

MALCHUS BV HANDEIMIJ.
Fokkerstraat 511·513
TEL: 0031·10·4 27 77 77
Postbus 48
FAX: 0031·10-4 154867
NL·3125 BD Schiedam
TLX: 044·2 1598

NORWAY
EXATEC ALS
Solheimveien 50
Postbox 314
N·1473 Skarer

TEL: 0047·2·97 29 50
FAX: 0047·2·97 29 53

KORD DISTRIBUTION LTD.
P.O. Box 294, Camberley, TEL: 0276 685741
Surry GU 153JJ
FAX: 0276 691334
TLX: 859919 KORDIS G
BYTECH LTD.
3 The Western Centre,
Western Road,
Bracknell Berkshire
RG121RW

TEL: Sales 0344 482211
Account/Admin
0344424222
FAX: 0344 420400
TLX: 848215

SPAIN
SEMICONDUCTORES S.A.
Ronda General Mitre
TEL: 0034·3·2 172340
240 Bjs .
FAX: 0034·3·2 176598
E·OB006 Barcelona
TLX: 052·9 77 87

SWEDEN
MIKO KOMPONENT AB
Segers by Vagen 3
P.O. Box 2001
S·14502 Norsborg

TEL: 0046·753·89080
FAX: 0046·753·75 34 0
TLX: 052·9 77 87

lIT MULTI COMPONENTS
346 Edinburgh Avenue
TEL: 0753 824212
Slough SL1 4TU
FAX: 0753824160
TLX: 849804
NELTRONIC LIMITED
John F. Kennedy Road,
Naas Road, Qublin 12,
Ireland

TEL: (01) 503560
FAX: (01) 552789
TLX: 93556 NELT EI

SWITZERLAND
PANATEL AG
Grundstr. 20
CH-6343 Rotkreuz

TEL: 0041·42 64 30 30
FAX: 0041·42 64 30 35
TLX: 045·86 87 63

c8 SAIUISUNG
Electronics

.

804

SAMSUNG SEMICONDUCTOR REPRESENTATIVES
ASIA

SANT SONG CORP.
Room A, 8F No. 180, Sec-4,
Chung Hsiao E. Rd., Taipei,
Taiwan, R.O.C.

HONG KONG
AV, CONCEPT LTD.
ROOM 804, Tower A, 8/F1.,
TEL: 3629325
Hunghom Commercial Centre, FAX: 7643108
37·39 MA Tau Wai Road,
TLX: 52362 ADVCC HX
Hunghom, Kowloon,
Hong Kong .
PROTECH COMPONENTS LTD.
Flat 3, 10/FI., Wing Shing Ind. TEL: 3522181
Bldg., 26 NG Fong Street,
FAX: 3523759
San Po Kong, Kowloon,
TLX: 38396 PTLD HX
Hong Kong
WISEWORLD TECHNOLOGY CO.
Room 708, Tower A, 7/FI.,
TEL: 7658923
Hunghom Commercial Centre, FAX: 3636203
37-39 MA Tau Wai Road,
Kowloon, Hong Kong
RIGHT SYSTEM CO., LTD.
Room A19, 6/FI.,
Proficient Ind. Centre,
Block A, 6 Wang Kwun Road,
Kowloon Bay, Kowloon,
Hong Kong

TEL: 7566331
FAX: 7998985
TLX: 52896 OSPCl HX

SOLARBRITE ENTERPRISE CO.
(CALCULATOR & WATCH)
Room 903, The Kwangtung
TEL: 7701010
Provincial Bank Bldg.,
FAX: 7700559
589-591 Nathan Road,
TLX: 52543 SECl HX
Kowloon, Hong Kong
SOLARI COMPUTER ENGINEERING LTD.
(4 BIT/8 BIT ONE CHIP SOFTWARE HOUSE)
Unit 703-4, 7/FI., Jordan House, TEL: 7213318
6-8 Jordan Road, Kowloon,
FAX: 7235288
Hong Kong
CENTRAL SYSTEMS DESIGN LTD.
(ASIC DESIGN HOUSE) .
Room 1704, Westlands Centre, TEL: 5620248
20 Westlands Road,
FAX: 5658046
Quarry Bay, Hong Kong
TLX: 73990 CSD HX
DATAWORLD INTERNATIONAL LTD.
(MIYUKI ELECTRONICS (HK) LTD.)
(ASIC DESIGN HOUSE)
Flat No. 3-4, 5tFl.,
TEL: 7862611
Yuen Shing Ind. Bldg.,
FAX: 7856213
1033, Yee Kuk Street, West,
TLX: 45876 MYK HX
Kowloon, Hong Kong

TAIWAN
YOSUN INDUSTRIAL CORP.
Min-Sheng Commercial Bldg.,
10F No. 481 Min-Sheng East
Rd., Taipei, Taiwan, R.O.C.
KINREX CORP.
2nd. Fl., 514-3, Tun Hwa S.
Rd., Taipei, Taiwan, R.O.C.

TEL: (02) 501-0700-9
FAX: (02) 503-1278
TLX: 26777 YOSUNIND
TEL: 02-700-4686-9
FAX: 02-704-2482
TLX: 20402 KIN REX

cRSAMSUNG
. . Electronics

TEL: (02) 775-2506
FAX: (02) 771-8413

JAPAN
ADO ELECTRONIC INDUSTRIAL CO., LTD.
7th Fl., Sasage Bldg., 4-6
TEL: 03-257·1618
Sotokanda 2-Chome Chiyoda- FAX: 03-257-1579
ku, Tokyo 101, Japan
INTERCOM PO INC.
Ihi Bldg., 1-6-7, Shibuya,
Shibuya-ku, Tokyo 150 Japan

TEL: 03-406-5612
FAX: 04-409·4834

CHEMI-CON INTERNATIONAL CORP.
Mitauya Toranomon Bldg.,
TEL: 03·508-2841
22·14, Toranomon 1·Chome,
FAX: 03·504-0566
Minato-ku, Tokyo 105, Japan
TOMEN ELECTRONICS CORP.
1-1, Uschisaiwai-cho 2-Chome TEL: 03-506·3473
Chiyoda·ku, Tokyo, 100
FAX: 03·506·3497
DIA SEMICON SYSTEMS INC.
Wacore 64 1-37-8, Sangenjaya, TEL: 03-487-0386
Setagaya·ku, Tokyo 154 Japan FAX: 03-487·8088
RIKEI CORP.
Nichimen Bldg., 2-2-2,
Nakanoshima, Kita-ku,
Osaka 530 Japan

TEL: 06-201-2081
FAX: 06-222-1185

SINGAPORE
GEMINI ELECTRONICS PTE LTD.
315, Outram Road, #12-08,
TEL: 65-2263066
Tan Boon Uat Building,
FAX: 65-2262781
Singapore 0315
TLX: RS-42819

INDIA
COMPONENTS AND SYSTEMS MARKETING
ASSOCIATES (INDIA) PVT. LTD.
100, Dadasaheb Phalke Road,
Dadar, Bombay 400
014
TEL: 4114585
FAX: 4112546
TLX: 001-4605 PDT IN

TURKEY
ELEKTRO SAN. VE TIC. KOlL.
Hasanpasa, Ahmet Rasim Sok
No. 16 Kadikoy Istanbul,
Turkey

STI.
TEL: 337·2245
FAX: 336-8814
TLX: 29569 elts tr

THAILAND
VUTIPONG TRADING LTD., PART.
51-53 Pahurat Rd. (Banmoh)
TEL: 221-9699-3641
Bangkok 10200 THAILAND
223-4608
FAX: 224-0861
TlX: 87470 Vutipong TH

805

I

SAMSUNG SEMICONDUCTOR REPRESENTATIVES

KOREA
NAEWAE SEMICONDUCTOR
Room 503, 22·dong, Sunin
Bldg., 16-1, Hankangro-2ka,
Yongsan-ku, Seoul, Korea
Cable: ELECONAEWAE
SEOUL
c.p.a. BOX 1409

CO., LTD.
TEL: 717·4065-7
702-4407-9
FAX: 702-3924
TLX: NELCO K27419

SAMSUNG LlGHT·ELECTRONICS CO., LTD.
4th FI. Room 2-3,
TEL: 718-0045,
Electronics Main Bldg., 16-9,
718-9531-5
Hankangro-3ka, Yongsan·ku, FAX: 718·9536
SeouJ, Korea
N~W CAS.TLE SEMICONDUCTOR CO., LTD.
4th Fl.Room 10-11,
TEL: 718·8531-4
Electronics Main Bldg., 16-9, FAX: 718-8535
Hankangro-3ka, Yongsan-ku,
Seoul, Korea

HANKOOK SEMICONDUCTOR &
TELECOMMUNICATIONS CO., LTD.
402 Suite, Sowon Bldg.,
TEL: 338-2015-8
354-22, Seokyo-dong,
FAX: 338-2983
Mapo-ku, Seoul, Korea

c8SAMSUNG
Electronics

SEG YUNG INTERISE CORP.
21-301, Sunin Bldg., 16-1,
TEL: 701-6811-6,
Hankangro-2ka, Yongsan-ku,
701-6781-4
Seoul, Korea
FAX: 701-6785

SEGYUNG ELECTRONICS
182-2, Jangsa-dong,
Jongro-ku, Seoul, Korea

SAMTEK
Room 704, Euylim Bldg.,
16-96, Hankangro-3ka,
Yongsan-ku, Seoul, Korea

TEL: 273-6781-3
FAX: (02) 273-6597
TLX: K24950
SUKSEMT

TEL: 703-9656-8
FAX: 703-9659

SUNIN INDUSTRIES CO., LTD.
Sunin Bldg., 7Fl., 16-1,
TEL: 718-7113-6
702-1257-9
Hankangro-2ka, Yongsan-ku,
Seoul, Korea
FAX: 715-1031

806

SAMSUNG SEMICONDUCTOR DISTRIBUTORS
ALABAMA
HAMMOND
4411·B Evangel Circle, N.W.
Huntsville, AL 35816

(205) 830·4764

ARIZONA
ADDED VALUE
7741 East Gray Road
Suite #9
Scottsdale, Al 85260

(602) 951·9788

CYPRESS/RPS
2164 E. Broadway Road #310·8
Tempe, AZ 85282

(602) 966·2256

(805) 495·9998

JACO
2880 lanker Road
Suite 202
San Jose, CA 95134

(408) 432·9290

JACO
23·441 South Pointe Drive
Laguna Hills, CA 92653

(714) 837-8966

MICRO GENESIS
2880 lakeside Drive
Santa Clara, CA 95054

(408) 727·5050

CANADA

CALIFORNIA
ADDED VALUE
3320 East Mineral King
Unit D
Visalia, CA 93291

(209) 734·8861

ADDED VALUE
1582 Parkway Loop
Unit G
Tustin, CA 92680

(714) 259·8258

ADDED VALUE
6397 Nancy Ridge Road
San Diego, CA 92121

(619) 558-8890

ADDED VALUE
31194 La Baya Drive, #100
Westlake Village, CA 91362

(818) 889·2861

ALL AMERICAN
369 Van Ness Way #701
Torrance, CA 90501

(BOO) 669·8300

BELL MICRO PRODUCTS
18350 Mt. Langley
Fountain Valley, CA 92708

(714) 963·0667

ELECTRONIC WHOLESALERS
1935 Avenue De L'Eglise
Montreal, Quebec, Canada
H4E 1H2

(514) 769·8861

PETERSON, C.M.
220 Adelaide Street North
London, Ontario, Canada
N6B 3H4

(519) 434·3204

SAYNOR VARAH
99 Scarsdale Road
Don Mills, Ontario, Canada
M3B 2R4

(416) 445·2340

SA YNOR VARAH
1·13511 Crestwood Place
Richmond, B.C., Canada
V6V 2G5

(604) 273·2911

WESTBURNE IND. ENT., LTD.
300 Steep rock Drive
Downsview, Ontario, Canada
M3J 2W9

(416) 635·2950

COLORADO

BELL MICRO PRODUCTS
550 Sycamore Drive
Milpitas, CA 95035

(408) 434·1150

CYPRESS/RPS
6230 Descanso Avenue
Buena Park, CA 90620

(714) 521·5230

CY.,.PRESS/RPS
10054 Mesa Ridge Ct
Suite 118
San Diego, CA 92121

(619) 535·0011

CYPRESS/RPS
2175 Martin Avenue
Santa Clara, CA 95050
CYPRESS/RPS
21550 Oxnard, #420
Woodland Hills, CA 91367

c8SAMSUNG
Electronics

JACO
2260 Townsgate Road
Westlake Village, CA 91361

ADDED VALUE
4090 Youngfield
Wheat Ridge, CO 80033

(303) 422·1701

CYPRESS/RPS
12503 E. Euclid Drive
Englewood, CO 80111

(303) 792·5829

CONNECTICUT
ALMO ELECTRONICS
31 Village Lane
Wallingford, CT 06492

(203) 288·6556

(408) 980·8400

JACO
384 Pratt Street
Meriden, CT 06450

(203) 235·1422

(818) 710·7780

JV
690 Main Street
East Haven, CT 06512

(203) 469·2321

807

I

SAMSUNG SEMICONDUCTOR DISTRIBUTORS
FLORIDA
ALL AMERICAN
16251 N.W. 54th. Avenue
Miami, FL 33014

(305) 621-8282

HAMMOND
6600 N.w. 21st. Avenue
Fort Lauderdale, FL 33309

(407) 973-7103

HAMMOND
1230 W. Central Blvd
Orlando, FL 32802

(407) 849-6060

MICRO GENESIS
2170 W. State Road 434 #324
Longwood, FL 32779

(407) 869-9989

JACO
Rivers Center
10270 Old Columbia Road
Columbia, MD 21046

(301) 995-6620

MASSACHUSETS
ALMO ELECTRONICS
60 Shawmut Avenue
Canton, MA 02021

(617) 821-1450

GERBER
128 Carnegie Row
Norwood, MA 02062

(617) 329-2400

JACO
222 Andover Street
Wilmington, MA 01887

(617) 273-1860

GEORGIA
HAMMOND
5680 Oakbrook Parkway
#160
Norcross, GA 30093

(404) 449-1996

QUALITY COMPONENTS
6145 Northbelt Parkway
Suite B
Norcross, GA 30071

(404) 449-9508

MICHIGAN
CALDER
4245 Brockton Drive
Grand Rapids, MI 49508

(616) 698-7400.

CHELSEA INDUSTRIES
34443 Schoolcraft
Livonia, MI 48150

(313) 525-1155

MINNESOTA

ILLINOIS
(312) 860-7171

ALL AMERICAN
11409 Valley View Road
Eden Prairie, MN 55344

(612) 944-2151

GOOLD
101 Leland Court
Bensenville, IL 60106

(312) 884-6620

CYPRESS/RPS
7650 Executive Drive
Eden Prairie, MN 55344

(612) 934-2104

QPS
101 Commerce Dr. #A
Schaumburg, IL 60173

VOYAGER
5201 East River Road
Fridley, MN 55421

(612) 571-7766

INDIANA
ALTEX
12744 N. Meridian
Carmel, IN 46032

(31.7) 848-1323

CHELSEA INDUSTRIES
8465 Keystone CrOSSing, #115
Indianapolis, IN 46240

(317) 253-9065

MISSOURI
CHELSEA INDUSTRIES
2555 Metro Blvd.
Maryland Heights, MO 63043

(314) 997-7709

NEW JERSEY
MARYLAND
(301) 251-1205

ALMO ELECTRONICS
12 Connerty Court
East Brunswick, NJ 08816

(201) 613-0200

ALL AMERICAN
1136 Taft Street
Rockville, MD 20853

(301) 953-2566

GENERAL RADIO SUPPLY
600 Penn St. @ Bridge Plaza
Camden, NJ 08102

(609) 964-8560

ALMO ELECTRONICS
8309B Sherwick Court
Jessup, MD 20794

(301) 995-6744

JACO
Ottilio Office Complex
555 Preakness Avenue
Totowa, NJ 07512

(201) 942-4000

GENERAL RADIO SUPPLY
6935L Oakland Mills Road
Columbia, MD 21045

cRSAMSUNG
. . Electronics

808

SAMSUNG SEMICONDUCTOR DISTRIBUTORS
OKLAHOMA

NEW YORK
ALL AMERICAN
33 Commack Loop
Ronkonkoma, NY 11779

(516) 981-3935

CAM/RPC
2975 Brighton Henrietta TL Road
Rochester, NY 14623

(716) 427-9999

JACO
145 Oser Avenue
Hauppauge, NY 11788

(516) 273-5500

MICRO GENESIS
90-10 Colin Drive
Holbook, NY 11741

(516) 472-6000

QUALITY COMPONENTS
3158 S. 108th East Avenue
Suite 274
Tulsa, OK 74146

(918) 664-8812

OREGON

NORTH CAROLINA
QUALITY COMPONENTS
3029-105 Stonybrook Drive
Raleigh, NC 27604

(919) 467-4897

DIXIE
2220 South Tryon Street
Charlotte, NC 28234

(704) 377-5413

HAMMOND
2923 Pacific Avenue
Greensboro, NC 27420

(919) 275-6391

RESCO/RALEIGH
Hwy. 70 West & Resco Court
Raleigh, NC 27612

(919) 781-5700

CYPRESS/RPS
15075 S. Koll Parkway
Suite 0
Beaverton, OR 97006

(503) 641-2233

PENNSYLVANIA
ALMO ELECTRONICS
9815 Roosevelt Blvd.
Philadelphia, PA 19114

(215) 698-4003

CAM/RPC
620 Alpha Drive
Pittsburgh, PA 15238

(412) 782-3770

ALMO ELECTRONICS
220 Executive Drive
Mars, PA 16046

(412) 776-9090

SOUTH CAROLINA

OHIO

DIXIE
4909 Pelham Road
Greenville, SC 29606

(803) 297-1435

DIXIE
1900 Barnwell Street
Columbia, SC 29201

(803) 779-5332

HAMMOND
1035 Lowndes Hill Rd.
Greenville, SC 29607

(803) 233-4121

CAM/RPC
749 Miner Road
Cleveland; OH 44143

(216) 461-4700

CAM/RPC
15 Bishop Drive #104
Westerville, OH 43081

(614) 888-7777

CAM/RPC
7973-B Washington Woods Drive
Centerville, OH 45459

(513) 433-5551

ADDED VALUE
4470 Spring Valley Road
Dallas, TX 75244

(214) 404-1144

CHELSEA INDUSTRIES
10979 Reed Hartman, Highway
#133
Cincinnati, OH 45242

(513) 891-3905

ADDED VALUE
6448 Highway 290 East
#A103
Austin, TX 78723

(512) 454-8845

CHELS"EA INDUSTRIES
1360 Tomahawk
Maumee, OH 43537

(216) 893-0721

ALL AMERICAN
1819 Firman Drive, #127
Richardson, TX 75081

(214) 231-5300

SCHUSTER
11320 Grooms Road
Cincinnati, OH 45242

(513) 489-1400

CYPRESS/RPS
2156 W. Northwest Highway
Dallas, TX 75220

(214) 869-1435

SCHUSTER
20570 East Aurora Road
Twinsburg, OH 44087

(216) 425-8134

JACO
1209 Glenville Drive
Richardson, TX 75080

(214) 235-9575

....

OCSAMSUNG
Electronics

TEXAS

809

I

SAMSUNG SEMICONDUCTOR REPRESENTATIVES
THE NETHERLANDS

UNITED KINGDOM

MALCHUS BV HANDEIMIJ.
Fokkerstraat 511-513
TEL: 0031-10-4 27 77 77
Postbus 48
FAX: 0031-10-4 154867
NL-3125 BO SChiedam
TLX: 044-2 15 98

NORWAY
EXATEC ALS
Solheimveien 50
Postbox 314
N-1473 Skarer

TEL: 0047-2-97 29 50
FAX: 0047-2-97 29 53

STC ELECTRONIC DISTRIBUnON
Edinburgh Way Harlow TEL: (0279) 441144
FAX: (0279) 441787
Essex CM20 20F

BYTECH LTD.
3 The Western Centre,
Western Road,
Bracknell Berkshire
RG121RW

TEL: Sales 0344 482211
Account/Admin
0344424222
FAX: 0344 420400
TLX: 848215

SPAIN
SEMICONDUCTORES S.A.
Ronda General Mitre
TEL: 0034-3-2 172340
240 Bjs
FAX: 0034-3-2176598
E-D8006 Barcelona
TLX: 052-9 77 87

SWEDEN
MIKO KOMPONENT AB
Segers by Vagen 3
P.O. Box 20p1
S-14502 Norsborg

TEL: 0046-753-89080
FAX: 0046-753-75 34 0
TLX: 052-9 77 87

ITT MULTI COMPONENTS
346 Edinburgh Avenue
TEL: 0753 824212
Slough SL 1 4TU
FAX: 0753 824160
TLX: 849804
NELTRONIC LIMITED
John F. Kennedy Road,
Naas Road, Qublin 12,
Ireland

TEL: (01) 503560
FAX: (01) 552789
TLX: 93556 N ELT EI

SWITZERLAND
PANATEL AG
Grundstr. 20
CH-6343 Rotkreuz

TEL: 0041-42 64 30 30
FAX: 0041-42 64 30 35
TLX: 045-86 87 63

c8SAMSUNG
Electronics

810

NOTES

NOTES

NOTES

NOTES

••
c:cSAMSUNG
•• Electronics

Semiconductor Business
HEAD OFFICE:
8/10FL SAMSUNG MAIN BLDG.
250, 2-KA, TAEPYUNG-RO,
CHUNG-KU, SEOUL, KOREA
C.P.O. BOX 8233

TELEX: KORSST K27970
TEL: (SEOUL) 751-2114
FAX: 753-0957

BUCHEON PLANT:
82-3, DODANG-DONG,
BUCHEON, KYUNGKI-DO, KOREA
C.P.O. BOX 5779 SEOUL 100

TELEX: KORSEM K28390
TEL: (SEOUL) 741-0066, 664-0066
FAX: 741-4273

KIHEUNG PLANT:
SAN #24 NONGSUH-RI, KIHEUNG-MYUN
YONGIN-GUN, KYUNGKI-DO, KOREA
C.P.O. BOX 37 SUWON

TELEX: KORSST K23813
TEL: (SEOUL) 741-0620/7
FAX: 741-0628

GUMI BRANCH:
259, GONDAN-DONG, GUMI,
KYUNGSANGBUK-DO, KOREA

TELEX: SSTGUMI K54371
TEL: (GUMI) 2-2570
FAX: (GUMI) 52-7942

SAMSUNG SEMICONDUCTOR INC.:
3725 NORTH FIRST STREET
SANJOSE, CA 95134-1708, USA

TEL: (408) 954-7000
FAX: (408) 954-7873

HONG KONG BRANCH:
24FL TOWER 1 ADMIRALTY CENTER
18 HARCOURT ROAD HONG KONG

TEL: 8626900
TELEX: 80303 SSTC HX
FAX: 8661343

TAIWAN OFFICE:
RM B. 4FL NO 581
TUN-HWA S, RD, TAIPEI, TAIWAN

TEL: (2) 70tHl025/7
FAX: (2) 784-0847

SAMSUNG ELECTRONICS JAPAN CO., LTD.
9F. SUDACHO VERDE BLDG.
2-3, KANDA-SUDACHO
CHIYODA-KU, TOKYO 101, JAPAN

TELEX: 2225206 SECJPN J
TEL: (03) 258-9601
FAX: (03) 258-9696

SAMSUNG SEMICONDUCTOR EUHOPE GMBH:
MERGENTHALER ALLEE 38-40
0-6236 ESCHBORN, WIG

TEL: 0-6196-90090
FAX: 0-6196-900989
TELEX: 4072678 SSED

SAMSUNG (U.K.) LTD.:
SAMSUNG HOUSE 3 RIVERBANK WAY
GREAT WEST ROAD BRENTFORD
MIDDLESEX TW8 9RE

TEL: 862-9312 (EXT) 304
862-9323 (EXT) 292
FAX: 862-0096, 862-0097
TELEX: 25823

SINGAPORE OFFICE:
10 COllYER QUAY 114-07
OCEAN BUILDING S'PORE 0104

TEL: 535-2808
FAX: 532-6452

PRINTED IN KOREA
MARCH,1990



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