MAX22444–MAX22446 - Reinforced, Fast, Low-Power, Four-Channel Digital Isolators
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MAX22444–MAX22446 - Reinforced, Fast, Low-Power, Four-Channel Digital Isolators
The MAX22444–MAX22446 are reinforced, fast, low-power 4-channel digital galvanic isolators using Maxim’s proprietary process technology. These devices transfer digital signals between circuits with different power domains, using as little as 0.74mW per channel at 1Mbps (1.8V supply). All of the evices in the family feature reinforced isolation for a withstand voltage rating of 5kVRMS for 60 seconds.
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MAX22446 增强型、快速、低功耗、四通道数字隔离器 | Maxim Integrated
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MAX22445 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators | Maxim Integrated
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Click here for production status of specific part numbers. MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators General Description The MAX22444�MAX22446 are reinforced, fast, lowpower 4-channel digital galvanic isolators using Maxim's proprietary process technology. These devices transfer digital signals between circuits with different power domains, using as little as 0.74mW per channel at 1Mbps (1.8V supply). All of the devices in the family feature reinforced isolation for a withstand voltage rating of 5kVRMS for 60 seconds. The MAX22444�MAX22446 family offers all possible unidirectional channel configurations to accommodate any 4-channel design, including SPI, RS-485, and digital I/O applications. Output enable for the A side of the MAX22445R/S/U/V is active-low, making them ideal for isolating a port on a shared SPI bus since the CS signal can directly enable the MISO signal on the isolator. All other output enables in the MAX22444-MAX22446 family are the traditional active-high. All channels on the MAX22444�MAX22446M/N are always enabled, however, the default state of the outputs of these devices is selectable. Devices are available with a maximum data rate of either 25Mbps or 200Mbps, and with outputs that are either default-high or default-low. The default is the state the output assumes when the input is either not powered or is opencircuit. See the Ordering Information and Product Selector Guide for suffixes associated with each option. Independent 1.71V to 5.5V supplies on each side of the isolator also make the devices suitable for use as level translators. All of the devices in the MAX22444�MAX22446 family are available in a 16-pin wide-body SOIC package with 8mm of creepage and clearance. The package material has a minimum comparative tracking index (CTI) of 400V, which gives it a group II rating in creepage tables. All devices are rated for operation at ambient temperatures of -40�C to +125�C. Benefits and Features Reinforced Galvanic Isolation for Fast Digital Signals � Up to 200Mbps Maximum Data Rate � Withstands 5kVRMS for 60s (VISO) � Continuously Withstands 1500VRMS (VIOWM) � Withstands �10kV Surge Between GNDA and GNDB with 1.2/50s waveform � High CMTI (50kV/s, Typical) Low Power Consumption � 0.74mW per Channel at 1Mbps with VDD = 1.8V � 1.4mW per Channel at 1Mbps with VDD = 3.3V � 3.2mW per Channel at 100Mbps with VDD = 1.8V Options to Support a Broad Range of Applications � 2 Maximum Data Rates (200Mbps, 25Mbps) � 3 Direction Configurations � Active-High or Active-Low Enable Inputs � 2 Fixed Output Default States (High/Low) or PinSelectable (M/N Versions) Applications Isolated SPI Interface Fieldbus Communications for Industrial Automation Isolated RS-485/RS-422, CAN Battery Management Medical Systems Safety Regulatory Approvals UL According to UL1577 cUL According to CSA Bulletin 5A VDE 0884-11 Reinforced Isolation Ordering Information and Product Selector Guide appear at end of data sheet. 19-100188; Rev 7; 3/20 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Absolute Maximum Ratings VDDA to GNDA.........................................................-0.3V to +6V VDDB to GNDB.........................................................-0.3V to +6V IN_ on Side A, ENA, ENA, DEFA to GNDA.............-0.3V to +6V IN_ on Side B, ENB, DEFB to GNDB......................-0.3V to +6V OUT_ on Side A to GNDA....................... -0.3V to (VDDA + 0.3V) OUT_ on Side B to GNDB...................... -0.3V to (VDDB + 0.3V) Short-Circuit Continuous Current OUT_ on Side A to GNDA, OUT_ on Side B to GNDB.............................................�30mA Continuous Power Dissipation (TA = +70�C) Wide SOIC (derate 14.1mW/�C above +70�C).......1126.8mW Operating Temperature Range.......................... -40�C to +125�C Maximum Junction Temperature......................................+150�C Storage Temperature Range............................. -60�C to +150�C Lead Temperature (soldering, 10s).................................. +300�C Soldering Temperature (reflow)........................................+260�C Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only; functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Information PACKAGE TYPE: 16 Wide SOIC Package Code Outline Number Land Pattern Number THERMAL RESISTANCE, FOUR-LAYER BOARD Junction to Ambient (JA) Junction to Case (JC) W16MS+12 21-0042 90-0107 71�C/W 24�C/W Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. DC Electrical Characteristics (VDDA - VGNDA = 1.71V to 5.5V, VDDB - VGNDB = 1.71V to 5.5V, CL = 15pF, TA = -40�C to +125�C, unless otherwise noted. Typical values are at VDDA - VGNDA = 3.3V, VDDB - VGNDB = 3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) (Notes 1, 3) PARAMETER POWER SUPPLY Supply Voltage Undervoltage-Lockout Threshold Undervoltage-Lockout Threshold Hysteresis SYMBOL CONDITIONS VDDA VDDB VUVLO_ Relative to GNDA Relative to GNDB VDD_ rising VUVLO_HYST MIN TYP MAX UNITS 1.71 5.5 V 1.71 5.5 1.5 1.6 1.66 V 45 mV www.maximintegrated.com Maxim Integrated 2 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators DC Electrical Characteristics (continued) (VDDA - VGNDA = 1.71V to 5.5V, VDDB - VGNDB = 1.71V to 5.5V, CL = 15pF, TA = -40�C to +125�C, unless otherwise noted. Typical values are at VDDA - VGNDA = 3.3V, VDDB - VGNDB = 3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) (Notes 1, 3) PARAMETER Side A Supply Current (MAX22444_) (Note 2) Side B Supply Current (MAX22444_) (Note 2) Side A Supply Current (MAX22445_) (Note 2) SYMBOL IDDA IDDB IDDA CONDITIONS VDDA = 5V 500kHz square wave, CL = 0pF VDDA = 3.3V VDDA = 2.5V VDDA = 1.8V 12.5MHz square wave, CL = 0pF VDDA = 5V VDDA = 3.3V VDDA = 2.5V VDDA = 1.8V VDDA = 5V 50MHz square wave, CL = 0pF VDDA = 3.3V VDDA = 2.5V VDDA = 1.8V VDDB = 5V 500kHz square wave, CL = 0pF VDDB = 3.3V VDDB = 2.5V VDDB = 1.8V 12.5MHz square wave, CL = 0pF VDDB = 5V VDDB = 3.3V VDDB = 2.5V VDDB = 1.8V VDDB = 5V 50MHz square wave, CL = 0pF VDDB = 3.3V VDDB = 2.5V VDDB = 1.8V 500kHz square wave, CL = 0pF VDDA = 5V VDDA = 3.3V VDDA = 2.5V VDDA = 1.8V VDDA = 5V 12.5MHz square VDDA = 3.3V wave, CL = 0pF VDDA = 2.5V VDDA = 1.8V VDDA = 5V 50MHz square wave, CL = 0pF VDDA = 3.3V VDDA = 2.5V VDDA = 1.8V MIN TYP 0.54 0.53 0.52 0.50 1.67 1.64 1.62 1.58 4.63 4.53 4.48 4.34 1.19 1.17 1.17 1.14 2.28 1.85 1.68 1.51 5.66 3.98 3.28 2.69 0.70 0.69 0.68 0.66 1.83 1.70 1.63 1.56 4.89 4.39 4.18 3.93 MAX 1.00 0.97 0.96 0.68 2.50 2.43 2.41 2.07 6.31 6.17 6.11 5.60 2.06 2.02 2.01 1.92 3.29 2.79 2.58 2.33 7.07 5.16 4.34 3.59 1.26 1.23 1.22 0.99 2.70 2.53 2.45 2.14 6.51 5.93 5.67 5.11 UNITS mA mA mA www.maximintegrated.com Maxim Integrated 3 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators DC Electrical Characteristics (continued) (VDDA - VGNDA = 1.71V to 5.5V, VDDB - VGNDB = 1.71V to 5.5V, CL = 15pF, TA = -40�C to +125�C, unless otherwise noted. Typical values are at VDDA - VGNDA = 3.3V, VDDB - VGNDB = 3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) (Notes 1, 3) PARAMETER Side B Supply Current (MAX22445_) (Note 2) Side A Supply Current (MAX22446_) (Note 2) Side B Supply Current (MAX22446_) (Note 2) SYMBOL IDDB IDDA IDDB CONDITIONS VDDB = 5V 500kHz square wave, CL = 0pF VDDB = 3.3V VDDB = 2.5V VDDB = 1.8V 12.5MHz square wave, CL = 0pF VDDB = 5V VDDB = 3.3V VDDB = 2.5V VDDB = 1.8V VDDB = 5V 50MHz square wave, CL = 0pF VDDB = 3.3V VDDB = 2.5V VDDB = 1.8V VDDA = 5V 500kHz square wave, CL = 0pF VDDA = 3.3V VDDA = 2.5V VDDA = 1.8V VDDA = 5V 12.5MHz square VDDA = 3.3V wave, CL = 0pF VDDA = 2.5V VDDA = 1.8V VDDA = 5V 50MHz square wave, CL = 0pF VDDA = 3.3V VDDA = 2.5V VDDA = 1.8V 500kHz square wave, CL = 0pF VDDB = 5V VDDB = 3.3V VDDB = 2.5V VDDB = 1.8V VDDB = 5V 12.5MHz square VDDB = 3.3V wave, CL = 0pF VDDB = 2.5V VDDB = 1.8V VDDB = 5V 50MHz square wave, CL = 0pF VDDB = 3.3V VDDB = 2.5V VDDB = 1.8V MIN TYP 1.03 1.01 1.01 0.98 2.13 1.80 1.66 1.53 5.41 4.11 3.58 3.11 0.87 0.85 0.84 0.82 1.98 1.75 1.65 1.55 5.15 4.25 3.88 3.52 0.87 0.85 0.84 0.82 1.98 1.75 1.65 1.55 5.15 4.25 3.88 3.52 MAX 1.80 1.76 1.75 1.61 3.09 2.70 2.54 2.27 6.88 5.41 4.78 4.11 1.53 1.49 1.49 1.30 2.89 2.61 2.49 2.20 6.69 5.66 5.22 4.60 1.53 1.49 1.49 1.30 2.89 2.61 2.49 2.20 6.69 5.66 5.22 4.60 UNITS mA mA mA www.maximintegrated.com Maxim Integrated 4 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators DC Electrical Characteristics (continued) (VDDA - VGNDA = 1.71V to 5.5V, VDDB - VGNDB = 1.71V to 5.5V, CL = 15pF, TA = -40�C to +125�C, unless otherwise noted. Typical values are at VDDA - VGNDA = 3.3V, VDDB - VGNDB = 3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) (Notes 1, 3) PARAMETER SYMBOL CONDITIONS MIN LOGIC INTERFACE (IN_, EN_, ENA, DEF_, OUT_) Input High Voltage Input Low Voltage Input Hysteresis IN_ Input Pullup Current VIH VIL VHYS IPU EN_, ENA, IN_ 2.25V VDD_ 5.5V 1.71V VDD_ < 2.25V 0.7 x VDD_ 0.75 x VDD_ DEF_ (Note 2) EN_, ENA, IN_ DEF_ (Note 2) EN_, ENA, DEF_, IN_ 2.25V VDD_ 5.5V 0.7 x VDD_ 1.71V VDD_ < 2.25V 0.75 x VDD_ 2.25V VDD_ 5.5V 1.71V VDD_ < 2.25V 2.25V VDD_ 5.5V 1.71V VDD_ < 2.25V MAX2244_B/E/M/R/U MAX2244_C/F/N/S/V MAX2244_B/C/R/S -10 MAX2244_M/N, DEFA = DEFB = high -10 IN_ Input Pulldown Current MAX2244_E/F/U/V 1.5 IPD MAX2244_M/N, DEFA = DEFB = low 1.5 IN_ Input Capacitance ENA Pullup Current ENB Pullup Current ENA Pulldown Current DEF_ Pullup Current OUT_ Output Voltage High CIN IPU_ENA IPU_ENB IPD_EN IPU_DEF VOH fSW = 1MHz MAX2244_B/C/E/F MAX2244_B/C/E/F/R/S/U/V MAX22445R/S/U/V MAX2244_M/N IOUT_ = -4mA source -10 -10 1.5 -10 VDD_ - 0.4 OUT_ Output Voltage Low VOL IOUT_ = 4mA sink TYP 410 80 -5 -5 5 5 2 -5 -5 5 -5 MAX UNITS V 0.8 0.7 V 0.8 0.7 mV -1.5 �A -1.5 10 �A 10 pF -1.5 �A -1.5 A 10 �A -1.5 �A V 0.4 V www.maximintegrated.com Maxim Integrated 5 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Dynamic Characteristics MAX2244_C/F/N/S/V (VDDA - VGNDA = 1.71V to 5.5V, VDDB - VGNDB = 1.71V to 5.5V, CL = 15pF, TA = -40�C to +125�C, unless otherwise noted. Typical values are at VDDA - VGNDA = 3.3V, VDDB - VGNDB = 3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) (Notes 2, 4) PARAMETER Common-Mode Transient Immunity SYMBOL CMTI CONDITIONS IN_ = GND_ or VDD_ (Note 5) MIN TYP MAX UNITS 50 kV/�s Maximum Data Rate Minimum Pulse Width Propagation Delay (Figure 3) Pulse Width Distortion Propagation Delay Skew Part-to-Part (Same Channel) DRMAX 2.25V VDD_ 5.5V 1.71V VDD_ < 2.25V 200 150 Mbps PWMIN IN_ to OUT_ 2.25V VDD_ 5.5V 1.71V VDD_ < 2.25V 5.00 ns 6.67 tPLH tPHL 4.5V VDD_ 5.5V 4.1 5.7 9.2 IN_ to OUT_, 3.0V VDD_ 3.6V 4.2 6.5 10.2 CL = 15pF 2.25V VDD_ 2.75V 4.9 7.9 13.4 1.71V VDD_ 1.89V 7.1 12.0 20.3 ns 4.5V VDD_ 5.5V 4.3 6.1 9.4 IN_ to OUT_, 3.0V VDD_ 3.6V 4.4 6.9 10.5 CL = 15pF 2.25V VDD_ 2.75V 5.1 8.2 14.1 1.71V VDD_ 1.89V 7.2 12.1 21.7 4.5V VDD_ 5.5V 0.4 2.0 PWD |tPLH - tPHL| 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 0.4 2.0 ns 0.3 2.0 1.71V VDD_ 1.89V 0.0 2.0 4.5V VDD_ 5.5V 3.7 tSPLH 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 4.3 6.0 1.71V VDD_ 1.89V 4.5V VDD_ 5.5V 10.3 ns 3.8 tSPHL 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 4.7 6.5 1.71V VDD_ 1.89V 11.5 Propagation Delay Skew Channel-to-Channel (Same Direction) tSCSLH tSCSHL 1.71V VDD_ 5.5V 1.71V VDD_ 5.5V 2.0 ns 2.0 www.maximintegrated.com Maxim Integrated 6 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Dynamic Characteristics MAX2244_C/F/N/S/V (continued) (VDDA - VGNDA = 1.71V to 5.5V, VDDB - VGNDB = 1.71V to 5.5V, CL = 15pF, TA = -40�C to +125�C, unless otherwise noted. Typical values are at VDDA - VGNDA = 3.3V, VDDB - VGNDB = 3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) (Notes 2, 4) PARAMETER Propagation Delay Skew Channel-to-Channel (Opposite Direction) Peak Eye Diagram Jitter Clock Jitter RMS Rise Time (Figure 3) Fall Time (Figure 3) Enable to Data Valid (MAX2244_C/F/S/V only, Figure 4) Enable to Tristate (MAX2244_C/F/S/V only, Figure 4) SYMBOL CONDITIONS MIN TYP MAX UNITS tSCOLH 4.5V VDD_ 5.5V 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.71V VDD_ 1.89V 4.5V VDD_ 5.5V 2.9 3.4 4.9 10.2 ns 3.2 tSCOHL 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 3.8 5.3 TJIT(PK) 1.71V VDD_ 1.89V 200Mbps 10.9 100 ps TJCLK(RMS) 500kHz clock input, rising/falling edges 7.5 ps 4.5V VDD_ 5.5V tR CL = 5pF 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.71V VDD_ 1.89V 0.8 1.1 ns 1.5 2.4 4.5V VDD_ 5.5V 1.0 tF CL = 5pF 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.4 ns 1.9 1.71V VDD_ 1.89V 3.0 ENA to 4.5V VDD_ 5.5V OUT_, tEN EN_ to OUT_, 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V CL = 15pF 1.71V VDD_ 1.89V 3.9 6.4 ns 10.1 18.4 ENA to 4.5V VDD_ 5.5V OUT_, tTRI EN_ to OUT_, 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V CL = 15pF 1.71V VDD_ 1.89V 6.3 9.0 ns 12.6 19.2 www.maximintegrated.com Maxim Integrated 7 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Dynamic Characteristics MAX2244_B/E/M/R/U (VDDA - VGNDA = 1.71V to 5.5V, VDDB - VGNDB = 1.71V to 5.5V, CL = 15pF, TA = -40�C to +125�C, unless otherwise noted. Typical values are at VDDA - VGNDA = 3.3V, VDDB - VGNDB = 3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) (Notes 2, 4) PARAMETER Common-Mode Transient Immunity Maximum Data Rate Minimum Pulse Width Glitch Rejection Propagation Delay (Figure 3) Pulse Width Distortion Propagation Delay Skew Part-to-Part (Same Channel) Propagation Delay Skew Channel-to-Channel (Same Direction) SYMBOL CMTI DRMAX PWMIN tPLH tPHL PWD tSPLH tSPHL tSCSLH tSCSHL CONDITIONS IN_ = GND_ or VDD_ (Note 5) IN_ to OUT_ IN_ to OUT_ IN_ to OUT_, CL = 15pF 4.5V VDD_ 5.5V 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.71V VDD_ 1.89V IN_ to OUT_, CL = 15pF 4.5V VDD_ 5.5V 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.71V VDD_ 1.89V 4.5V VDD_ 5.5V |tPLH - tPHL| 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.71V VDD_ 1.89V 4.5V VDD_ 5.5V 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.71V VDD_ 1.89V 4.5V VDD_ 5.5V 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.71V VDD_ 1.89V 1.71V VDD_ 5.5V 1.71V VDD_ 5.5V MIN TYP MAX UNITS 50 kV/�s 25 Mbps 40 ns 10 17 29 ns 17.4 24.2 32.5 17.6 25.0 33.7 18.3 26.4 36.7 20.7 30.6 43.5 ns 16.9 24.0 33.6 17.2 24.8 35.1 17.8 26.1 38.2 19.8 30.0 45.8 0.2 4.0 0.2 4.0 ns 0.3 4.0 0.6 4.0 15.1 15.0 15.4 20.5 ns 13.9 14.2 16.0 21.8 2.0 ns 2.0 Propagation Delay Skew Channel-to-Channel (Opposite Direction) tSCOLH tSCOHL 4.5V VDD_ 5.5V 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.71V VDD_ 1.89V 4.5V VDD_ 5.5V 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.71V VDD_ 1.89V 13.9 13.7 14.2 19.4 ns 13.0 12.9 14.4 20.1 www.maximintegrated.com Maxim Integrated 8 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Dynamic Characteristics MAX2244_B/E/M/R/U (continued) (VDDA - VGNDA = 1.71V to 5.5V, VDDB - VGNDB = 1.71V to 5.5V, CL = 15pF, TA = -40�C to +125�C, unless otherwise noted. Typical values are at VDDA - VGNDA = 3.3V, VDDB - VGNDB = 3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) (Notes 2, 4) PARAMETER Peak Eye Diagram Jitter Rise Time (Figure 3) Fall Time (Figure 3) Enable to Data Valid (MAX2244_B/E/R/U only, Figure 4) Enable to Tristate (MAX2244_B/E/R/U only, Figure 4) SYMBOL CONDITIONS MIN TYP MAX UNITS TJIT(PK) 25Mbps 250 ps 4.5V VDD_ 5.5V 0.8 tR CL = 5pF 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.1 ns 1.5 1.71V VDD_ 1.89V 2.4 4.5V VDD_ 5.5V 1.0 tF CL = 5pF 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V 1.4 ns 1.9 1.71V VDD_ 1.89V 3.0 ENA to 4.5V VDD_ 5.5V OUT_, tEN EN_ to OUT_, 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V CL = 15pF 1.71V VDD_ 1.89V 3.9 6.4 ns 10.1 18.4 ENA to 4.5V VDD_ 5.5V OUT_, tTRI EN_ to OUT_, 3.0V VDD_ 3.6V 2.25V VDD_ 2.75V CL = 15pF 1.71V VDD_ 1.89V 6.3 9.0 ns 12.6 19.2 Note 1: All devices are 100% production tested at TA = +125�C. Specifications over temperature are guaranteed by design and characterization. Note 2: Not production tested. Guaranteed by design and characterization. Note 3: All currents into the device are positive. All currents out of the device are negative. All voltages are referenced to their respective ground (GNDA or GNDB), unless otherwise noted. Note 4: All measurements taken with VDDA = VDDB, unless otherwise noted. Note 5: CMTI is the maximum sustainable common-mode voltage slew rate while maintaining the correct output. CMTI applies to both rising and falling common-mode voltage edges. Tested with the transient generator connected between GNDA and GNDB (VCM = 1000V). ESD Protection ESD PARAMETER SYMBOL CONDITIONS Human Body Model, All Pins MIN TYP MAX UNITS �4 kV www.maximintegrated.com Maxim Integrated 9 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Table 1. Insulation Characteristics PARAMETER SYMBOL Partial Discharge Test Voltage Maximum Repetitive Peak Isolation Voltage Maximum Working Isolation Voltage Maximum Transient Isolation Voltage Maximum Withstand Isolation Voltage VPR VIORM VIOWM VIOTM VISO Maximum Surge Isolation Voltage VIOSM Insulation Resistance Barrier Capacitance Side A to Side B Minimum Creepage Distance Minimum Clearance Distance Internal Clearance Comparative Tracking Index Climate Category Pollution Degree (DIN VDE 0110, Table 1) RIO CIO CPG CLR CTI CONDITIONS Method B1 = VIORM x 1.875 (t = 1s, partial discharge < 5pC) (Note 6) Continuous RMS voltage (Note 6) t = 1s fSW = 60Hz, duration = 60s (Note 7) Reinforced Insulation, test method per IEC 60065, VTEST = 1.6 � VIOSM = 10000VPEAK VIO = 500V, TA = 25�C VIO = 500V, 100�C TA 125�C VIO = 500V at TS = 150�C fSW = 1MHz (Note 8) Distance through insulation Material Group II (IEC 60112) Note 6: VISO, VIOWM, and VIORM are defined by the IEC 60747-5-5 standard. Note 7: Product is qualified at VISO for 60s and 100% production tested at 120% of VISO for 1s. Note 8: Capacitance is measured with all pins on field-side and logic-side tied together. VALUE 3977 2121 1500 8000 5000 6250 >1012 >1011 >109 1.5 8 8 0.021 >400 40/125/21 2 UNITS VP VP VRMS VP VRMS VP pF mm mm mm Safety Regulatory Approvals UL The MAX22444�MAX22446 are certified under UL1577. For more details, refer to File E351759. Rated up to 5000VRMS isolation voltage for single protection. cUL (Equivalent to CSA notice 5A) The MAX22444�MAX22446 are certified up to 5000VRMS for single protection. For more details, refer to File E351759. VDE The MAX22444�MAX22446 are certified to DIN VDE V 0884-11: 2017-1. For details, see file reference 5015017-48800002/265080/TL7/SCT; Certificate Number 40049143. Reinforced Insulation, Maximum Transient Isolation Voltage 8000VPK, Maximum Repetitive Peak Isolation Voltage 2121VPK This coupler is suitable for "safe electrical insulation" only within the safety ratings. Compliance with the safety ratings shall be ensured by means of suitable protective circuits. www.maximintegrated.com Maxim Integrated 10 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Safety Limits Damage to the IC can result in a low-resistance path to ground or to the supply and, without current limiting, the MAX22444-MAX22446 could dissipate excessive amounts of power. Excessive power dissipation can damage the die and result in damage to the isolation barrier, potentially causing downstream issues. Table 2 shows the safety limits for the MAX22444-MAX22446. The maximum safety temperature (TS) for the device is the 150�C maximum junction temperature specified in the Absolute Maximum Ratings. The power dissipation (PD) and junction-to-ambient thermal impedance (JA) deter- mine the junction temperature. Thermal impedance values (JA and JC) are available in the Package Thermal Characteristics section of the datasheet and power dissipation calculations are discussed in the Calculating Power Dissipation section. Calculate the junction temperature (TJ) as: TJ = TA + (PD x JA) Figure 1 and Figure 2 show the thermal derating curve for safety limiting the power and the current of the device. Ensure that the junction temperature does not exceed 150�C. SAFE POWER LIMIT (mW) SAFE CURRENT LIMIT (mA) 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 THERMAL DERATING CURVE FOR SAFETY POWER LIMITING 25 50 75 100 125 150 175 200 AMBIENT TEMPERATURE (�C) Figure 1. Thermal Derating Curve for Safety Power Limiting THERMAL DERATING CURVE FOR SAFETY LIMITING CURRENT 350 300 250 200 150 100 50 0 0 25 50 75 100 125 150 175 200 AMBIENT TEMPERATURE (�C) Figure 2. Thermal Derating Curve for Safety Current Limiting Table 2. Safety Limiting Values for the MAX22444-MAX22446 PARAMETER Safety Current on Any Pin Total Safety Power Dissipation Maximum Safety Temperature SYMBOL IS PS TS TEST CONDITIONS TJ = 150�C, TA = 25�C TJ = 150�C, TA = 25�C MAX 300 1760 150 UNIT mA mW �C www.maximintegrated.com Maxim Integrated 11 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Test Circuits and Timing Diagrams VDDA TEST SOURCE 0.1�F 50 VDDA VDDB MAX2244_ IN_ OUT_ GNDA GNDB (A) Figure 3. Test Circuit (A) and Timing Diagram (B) 0.1�F CL VDDB RL VDDA IN1, IN2 GNDA 50% 50% tPLH tPHL VDDB OUT1 GNDB tSCSLH VDDB 90% OUT2 50% 10% GNDB tR 50% (B) 50% tSCSHL 50% tF VDDA OR VDDB GNDA OR GNDB SW1 IN_ SW2 ISOLA TION BAR RIER GEN ERAT OR OUT _ RL SW3 1k EN_, ENA CL 15pF SW4 GNDA OR GND B 50 GNDA OR GNDB VDDA OR VDDB GNDA OR GNDB VDDA OR VDDB ENA OR E NB GNDA OR GNDB tEN VDDA OR VDDB OUT _ VOL MA X22 44_B/C/E/F/R/S/U/V 50% 50% SW1: OPEN SW2: CLOSED SW3: CLOSED SW4: OPEN tTRI VDD_ 2 0.25V VDDA ENA GND A tEN VDDA OUT _ VOL MA X22 445R/S/U/V 50% 50% VDD_ 2 tTRI 0.25V SW1: OPEN SW2: CLOSED SW3: CLOSED SW4: OPEN VDDA OR VDDB ENA OR E NB GNDA OR GNDB tEN VOH OUT _ GNDA OR GNDB MA X22 44_B/C/E/F/R/S/U/V 50% 50% SW1: CLOSED SW2: OPEN SW3: OPEN SW4: CLOSED tTRI VDD_ 2 0.25V VDDA ENA GND A tEN VOH OUT _ GND A MA X22 445R/S/U/V 50% 50% VDD_ 2 tTRI 0.25V SW1: CLOSED SW2: OPEN SW3: OPEN SW4: CLOSED Figure 4. Enable to Output Timing (tEN, tTRI) www.maximintegrated.com Maxim Integrated 12 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Typical Operating Characteristics (VDDA - VGNDA = +3.3V, VDDB - VGNDB = +3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SIDE A SUPPLY CURRENT vs. DATA RATE 1 toc01 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 0.9 MAX22444B/E/M 0.8 0.7 0.6 0.5 0.4 0 VDDA = 1.8V VDDA = 2.5V VDDA = 3.3V VDDA = 5.0V 5 10 15 20 25 DATA RATE (Mbps) SIDE A SUPPLY CURRENT vs. DATA RATE 3 toc02 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 2.6 MAX22444C/F/N 2.2 1.8 1.4 1 0.6 0.2 0 VDDA = 1.8V VDDA = 2.5V VDDA = 3.3V VDDA = 5.0V 25 50 75 100 125 150 175 200 DATA RATE (Mbps) SIDE A SUPPLY CURRENT vs. DATA RATE 1.2 toc03 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 1.1 MAX22445B/E/M/R/U 1 0.9 0.8 0.7 0.6 0 VDDA = 1.8V VDDA = 2.5V VDDA = 3.3V VDDA = 5.0V 5 10 15 20 25 DATA RATE (Mbps) SIDE A SUPPLY CURRENT vs. DATA RATE 3 toc04 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 2.6 MAX22445C/F/N/S/V 2.2 1.8 1.4 1 0.6 0 VDDA = 1.8V VDDA = 2.5V VDDA = 3.3V VDDA = 5.0V 25 50 75 100 125 150 175 200 DATA RATE (Mbps) SIDE A SUPPLY CURRENT vs. DATA RATE 1.3 toc05 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 1.2 MAX22446B/E/M 1.1 1 0.9 0.8 0.7 0 VDDA = 1.8V VDDA = 2.5V VDDA = 3.3V VDDA = 5.0V 5 10 15 20 25 DATA RATE (Mbps) SIDE A SUPPLY CURRENT vs. DATA RATE 3.4 toc06 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 3 MAX22446C/F/N 2.6 2.2 1.8 1.4 1 0.6 0 VDDA = 1.8V VDDA = 2.5V VDDA = 3.3V VDDA = 5.0V 25 50 75 100 125 150 175 200 DATA RATE (Mbps) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SIDE B SUPPLY CURRENT vs. DATA RATE 2.7 toc07 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 2.4 CL = 0pF, MAX22444B/E/M VDDB = 1.8V 2.1 VDDB = 2.5V VDDB = 3.3V 1.8 VDDB = 5.0V 1.5 1.2 0.9 0 5 10 15 20 25 DATA RATE (Mbps) SIDE B SUPPLY CURRENT vs. DATA RATE 2.7 toc08 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 2.4 CL = 15pF, MAX22444B/E/M VDDB = 1.8V 2.1 VDDB = 2.5V VDDB = 3.3V 1.8 VDDB = 5.0V 1.5 1.2 0.9 0 5 10 15 20 25 DATA RATE (Mbps) www.maximintegrated.com Maxim Integrated 13 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Typical Operating Characteristics (continued) (VDDA - VGNDA = +3.3V, VDDB - VGNDB = +3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SIDE B SUPPLY CURRENT vs. DATA RATE 12 toc09 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 10 CL = 0pF, MAX22444C/F/N VDDB = 1.8V 8 VDDB = 2.5V VDDB = 3.3V 6 VDDB = 5.0V 4 2 0 0 25 50 75 100 125 150 175 200 DATA RATE (Mbps) SIDE B SUPPLY CURRENT vs. DATA RATE 12 toc10 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 10 CL = 15pF, MAX22444C/F/N VDDB = 1.8V 8 VDDB = 2.5V VDDB = 3.3V 6 VDDB = 5.0V 4 2 0 0 25 50 75 100 125 150 175 200 DATA RATE (Mbps) SIDE B SUPPLY CURRENT vs. DATA RATE 2.7 toc11 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 2.4 CL = 0pF, MAX22445B/E/M/R/U VDDB = 1.8V 2.1 VDDB = 2.5V VDDB = 3.3V 1.8 VDDB = 5.0V 1.5 1.2 0.9 0 5 10 15 20 25 DATA RATE (Mbps) SIDE B SUPPLY CURRENT vs. DATA RATE 2.7 toc12 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 2.4 CL = 15pF, MAX22445B/E/M/R/U VDDB = 1.8V 2.1 VDDB = 2.5V VDDB = 3.3V 1.8 VDDB = 5.0V 1.5 1.2 0.9 0 5 10 15 20 25 DATA RATE (Mbps) SIDE B SUPPLY CURRENT vs. DATA RATE 12 toc13 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 10 CL = 0pF, MAX22445C/F/N/S/V VDDB = 1.8V 8 VDDB = 2.5V VDDB = 3.3V 6 VDDB = 5.0V 4 2 0 0 25 50 75 100 125 150 175 200 DATA RATE (Mbps) SIDE B SUPPLY CURRENT vs. DATA RATE 12 toc14 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 10 CL = 15pF, MAX22445C/F/N/S/V VDDB = 1.8V 8 VDDB = 2.5V VDDB = 3.3V 6 VDDB = 5.0V 4 2 0 0 25 50 75 100 125 150 175 200 DATA RATE (Mbps) SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SIDE B SUPPLY CURRENT vs. DATA RATE 2.5 toc15 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 2.2 CL = 0pF, MAX22446B/E/M VDDB = 1.8V 1.9 VDDB = 2.5V VDDB = 3.3V 1.6 VDDB = 5.0V 1.3 1 0.7 0 5 10 15 20 25 DATA RATE (Mbps) SIDE B SUPPLY CURRENT vs. DATA RATE 2.5 toc16 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 2.2 CL = 15pF, MAX22446B/E/M VDDB = 1.8V 1.9 VDDB = 2.5V VDDB = 3.3V 1.6 VDDB = 5.0V 1.3 1 0.7 0 5 10 15 20 25 DATA RATE (Mbps) www.maximintegrated.com Maxim Integrated 14 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Typical Operating Characteristics (continued) (VDDA - VGNDA = +3.3V, VDDB - VGNDB = +3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) SUPPLY CURRENT (mA) SIDE B SUPPLY CURRENT vs. DATA RATE 12 toc17 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 10 CL = 0pF, MAX22446C/F/N VDDB = 1.8V 8 VDDB = 2.5V VDDB = 3.3V 6 VDDB = 5.0V 4 2 0 0 25 50 75 100 125 150 175 200 DATA RATE (Mbps) PROPAGATION DELAY vs. TEMPERATURE 15 toc20 VDDA = VDDB INA TO OUTB, tPLH 12 MAX2244_C/F/N/S/V 9 6 3 0 -50 -25 VDD_ = 1.8V VDD_ = 2.5V VDD_ = 3.3V VDD_ = 5.0V 0 25 50 75 TEMPERATURE (C) 100 125 PROPAGATION DELAY (ns) SUPPLY CURRENT (mA) SIDE B SUPPLY CURRENT vs. DATA RATE 12 toc18 DRIVING ONE CHANNEL ON SIDE A OTHER CHANNELS ARE IN DEFAULT STATE 10 CL = 15pF, MAX22446C/F/N VDDB = 1.8V 8 VDDB = 2.5V VDDB = 3.3V 6 VDDB = 5.0V 4 2 0 0 25 50 75 100 125 150 175 200 DATA RATE (Mbps) PROPAGATION DELAY vs. VDDA VOLTAGE 30 toc21 VDDB = 3.3V 25 INA TO OUTB, tPLH 20 MAX2244_B/E/M/R/U 15 MAX2244_C/F/N/S/V 10 5 0 1.5 2.5 3.5 4.5 5.5 VDDA VOLTAGE (V) PROPAGATION DELAY (ns) PROPAGATION DELAY (ns) PROPAGATION DELAY vs. TEMPERATURE 32 toc19 VDDA = VDDB 30 INA TO OUTB, tPLH MAX2244_B/E/M/R/U 28 26 24 22 20 18 -50 -25 VDD_ = 1.8V VDD_ = 2.5V VDD_ = 3.3V VDD_ = 5.0V 0 25 50 75 TEMPERATURE (C) 100 125 PROPAGATION DELAY vs. VDDB VOLTAGE 30 toc22 VDDA = 3.3V 25 INA TO OUTB, tPLH 20 MAX2244_B/E/M/R/U 15 MAX2244_C/F/N/S/V 10 5 0 1.5 2.5 3.5 4.5 5.5 VDDB VOLTAGE (V) MINIMUM PULSE WIDTH toc23 MAX2244_B/E/M/R/U 40ns PULSE IN_ 1V/div MINIMUM PULSE WIDTH toc24 MAX2244_C/F/N/S/V 5ns PULSE IN_ 1V/div PROPAGATION DELAY (ns) OUT_ 20ns/div 1V/div OUT_ 5ns/div 1V/div www.maximintegrated.com Maxim Integrated 15 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Typical Operating Characteristics (continued) (VDDA - VGNDA = +3.3V, VDDB - VGNDB = +3.3V, VGNDA = VGNDB, TA = +25�C, unless otherwise noted.) EYE DIAGRAM AT 200MBPS MAX2244_C/F/N/S/V toc25 VDDB = 3.0V 400mV/div CLOCK JITTER RMS ON RISING EDGE MAX2244_C/F/N/S/V toc26 500kHz CLOCK INPUT tJCLK(RMS) = 7.5ps OUT_ 400mV/div 1ns/div 125ps/div CLOCK JITTER RMS ON FALLING EDGE MAX2244_C/F/N/S/V toc27 500kHz CLOCK INPUT tJCLK(RMS) = 8.0ps OUT_ 400mV/div 125ps/div CLOCK JITTER RMS (ps) CLOCK JITTER RMS vs. TEMPERATURE 16 toc28 500kHz CLOCK INPUT 14 VDD_ = 5.0V MAX2244_C/F/N/S/V 12 FALLING EDGE 10 8 6 RISING EDGE 4 2 0 -50 -25 0 25 50 75 TEMPERATURE (�C) 100 125 www.maximintegrated.com Maxim Integrated 16 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Pin Configurations TOP VIEW TOP VIEW VDDA 1 GNDA 2 + MAX22444B/C/E/F 16 VDDB 15 GNDB IN1 3 14 OUT1 IN2 4 13 OUT2 IN3 5 12 OUT3 IN4 6 11 OUT4 I.C. 7 10 ENB GNDA 8 9 GNDB W SOIC VDDA 1 GNDA 2 + MAX22444M/N IN1 3 IN2 4 IN3 5 IN4 6 DEFA 7 GNDA 8 W SOIC 16 VDDB 15 GNDB 14 OUT1 13 OUT2 12 OUT3 11 OUT4 10 DEFB 9 GNDB VDDA 1 GNDA 2 + MAX22445B/C/E/F 16 VDDB 15 GNDB IN1 3 14 OUT1 IN2 4 13 OUT2 IN3 5 12 OUT3 OUT4 6 11 IN4 ENA 7 10 ENB GNDA 8 9 GNDB W SOIC VDDA 1 GNDA 2 + MAX22445R/S/U/V 16 VDDB 15 GNDB IN1 3 14 OUT1 IN2 4 13 OUT2 IN3 5 12 OUT3 OUT4 6 11 IN4 ENA 7 10 ENB GNDA 8 9 GNDB W SOIC VDDA 1 GNDA 2 + MAX22445M/N IN1 3 IN2 4 IN3 5 OUT4 6 DEFA 7 GNDA 8 W SOIC 16 VDDB 15 GNDB 14 OUT1 13 OUT2 12 OUT3 11 IN4 10 DEFB 9 GNDB TOP VIEW VDDA 1 GNDA 2 + MAX22446B/C/E/F 16 VDDB 15 GNDB IN1 3 14 OUT1 IN2 4 13 OUT2 OUT3 5 12 IN3 OUT4 6 11 IN4 ENA 7 10 ENB GNDA 8 9 GNDB W SOIC VDDA 1 GNDA 2 + MAX22446M/N IN1 3 IN2 4 OUT3 5 OUT4 6 DEFA 7 GNDA 8 W SOIC 16 VDDB 15 GNDB 14 OUT1 13 OUT2 12 IN3 11 IN4 10 DEFB 9 GNDB www.maximintegrated.com Maxim Integrated 17 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Pin Description NAME VDDA GNDA IN1 IN2 IN3 IN4 I.C. DEFA ENA ENA GNDB ENB DEFB OUT4 OUT3 OUT2 OUT1 VDDB MAX22444 B/C/E/F 1 2, 8 3 4 5 6 7 -- -- -- 9, 15 10 -- 11 12 13 14 16 MAX22444 M/N 1 2, 8 3 4 5 6 -- 7 -- -- 9, 15 -- 10 11 12 13 14 16 MAX22445 B/C/E/F 1 2, 8 3 4 5 11 -- -- 7 -- 9, 15 10 -- 6 12 13 14 16 PIN MAX22445 R/S/U/V 1 2, 8 3 4 5 11 -- -- -- 7 9, 15 10 -- 6 12 13 14 16 MAX22445 M/N 1 2, 8 3 4 5 11 -- 7 -- -- 9, 15 -- 10 6 12 13 14 16 MAX22446 B/C/E/F 1 2, 8 3 4 12 11 -- -- 7 -- 9, 15 10 -- 6 5 13 14 16 MAX22446 M/N 1 2, 8 3 4 12 11 -- 7 -- -- 9, 15 -- 10 6 5 13 14 16 www.maximintegrated.com Maxim Integrated 18 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Pin Description (continued) NAME FUNCTION POWER VDDA GNDA VDDB GNDB Power Supply Input for Side A. Bypass VDDA to GNDA with a 0.1F ceramic capacitor as close as possible to the pin. Ground Reference for Side A. Power Supply Input for Side B. Bypass VDDB to GNDB with a 0.1F ceramic capacitor as close as possible to the pin. Ground Reference for Side B. INPUTS IN1 Logic Input 1 on Side A. Corresponds to Logic Output 1 on Side B. IN2 Logic Input 2 on Side A. Corresponds to Logic Output 2 on Side B. IN3 Logic Input 3 on Side A/B. Corresponds to Logic Output 3 on Side B/A. IN4 Logic Input 4 on Side A/B. Corresponds to Logic Output 4 on Side B/A. OUTPUTS OUT1 Logic Output 1 on Side B. OUT1 is the logic output for the IN1 input on Side A. OUT2 OUT3 Logic Output 2 on Side B. OUT2 is the logic output for the IN2 input on Side A. Logic Output 3 on Side B/A. OUT3 is the logic output for the IN3 input on Side A/B. OUT4 Logic Output 4 on Side B/A. OUT4 is the logic output for the IN4 input on Side A/B. ENABLE INPUTS ENA ENA ENB DEFAULT CONTROL Active-High Enable for Side A. ENA has an internal 5A pull-up to VDDA. Active-Low Enable for Side A. ENA has an internal 5A pull-down to GNDA. Active-High Enable for Side B. ENB has an internal 5A pull-up to VDDB. DEFA Default Control Input for Side A. Connect DEFA to VDDA to set side A outputs to a default-high state and to enable the pullup current on side A inputs. Connect DEFA to GNDA to set side A outputs to a default-low state and enable the pulldown current on side A inputs. DEFA must be tied to the same state (high or low) as DEFB. DEFB Default Control Input for Side B. Connect DEFB to VDDB to set side B outputs to a default-high state and to enable the pullup current on side B inputs. Connect DEFB to GNDB to set side B outputs to a default-low state and enable the pulldown current on side B inputs. DEFB must be tied to the same state (high or low) as DEFA. INTERNALLY CONNECTED I.C. Internally Connected. Leave unconnected or connect to GNDA or VDDA. www.maximintegrated.com Maxim Integrated 19 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Functional Diagrams VDDA MAX22444B/C/E/F VDDB VDDA ENB IN1 OUT1 IN1 MAX22444M/N VDDB DEFB OUT1 IN2 OUT2 IN2 OUT2 IN3 IN4 I.C. GNDA OUT3 IN3 OUT4 IN4 GNDB DEFA GNDA OUT3 OUT4 GNDB VDDA MAX22445B/C/E/F VDDB VDDA MAX22445R/S/U/V VDDB VDDA ENB ENB IN1 OUT1 IN1 OUT1 IN1 MAX22445M/N VDDB DEFB OUT1 IN2 OUT2 IN2 OUT2 IN2 OUT2 IN3 OUT4 ENA GNDA OUT3 IN3 IN4 GNDB OUT4 ENA GNDA OUT3 IN3 IN4 GNDB OUT4 DEFA GNDA OUT3 IN4 GNDB www.maximintegrated.com Maxim Integrated 20 MAX22444�MAX22446 Functional Diagrams (continued) Reinforced, Fast, Low-Power, Four-Channel Digital Isolators VDDA MAX22446B/C/E/F VDDB VDDA ENB IN1 OUT1 IN1 MAX22446M/N VDDB DEFB OUT1 IN2 OUT2 IN2 OUT2 OUT3 OUT4 ENA GNDA IN3 OUT3 IN4 GNDB OUT4 DEFA GNDA IN3 IN4 GNDB www.maximintegrated.com Maxim Integrated 21 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Detailed Description The MAX22444�MAX22446 are a family of 4-channel reinforced digital isolators. The MAX22444�MAX22446 have an isolation rating of 5kVRMS. The MAX22444MAX22446 family offers all possible unidirectional channel configurations to accommodate any 4-channel design, including SPI, RS-232, RS-485, and digital I/O applications. For applications requiring bidirectional channels, such as I2C, see the MAX14933 and MAX14937. The MAX22444 features four channels transferring digital signals in one direction for applications such as isolated digital I/O. The MAX22445 has three channels transmitting data in one direction and one channel transmitting in the opposite direction, making them ideal for applications such as isolated SPI and RS-485 communication. The MAX22446 provides further design flexibility with two channels in each direction for isolated RS-232 or other applications. Devices are available in a 16-pin wide-body SOIC package and are rated for up to 5kVRMS. This family of digital isolators offers low-power operation, high electromagnetic interference (EMI) immunity, and stable temperature performance through Maxim's proprietary process technology. The devices isolate different ground domains and block high-voltage/high-current transients from sensitive or human interface circuitry. Devices are available with a maximum data rate of either 25Mbps (B/E/M/R/U versions) or 200Mbps (C/F/N/S/V versions). The MAX2244_B/C/R/S feature default-high outputs. The MAX2244_E/F/U/V feature default-low outputs. The MAX2244_M/N feature user-selectable default-high or default-low outputs. The default is the state the output assumes when the input is not powered or if the input is open-circuit. The devices have two supply inputs (VDDA and VDDB) that independently set the logic levels on either side of the device. VDDA and VDDB are referenced to GNDA and GNDB, respectively. The MAX22444-MAX22446 also feature a refresh circuit to ensure output accuracy when an input remains in the same state indefinitely. Digital Isolation The MAX22444-MAX22446 provide reinforced galvanic isolation for digital signals that are transmitted between two ground domains. The devices withstand differences of up to 5kVRMS for up to 60 seconds, and up to 2121VPEAK of continuous isolation. Level-Shifting The wide supply voltage range of both VDDA and VDDB allows the MAX22444-MAX22446 to be used for level translation in addition to isolation. VDDA and VDDB can be independently set to any voltage from 1.71V to 5.5V. The supply voltage sets the logic level on the corresponding side of the isolator. Unidirectional Channels Each channel of the MAX22444-MAX22446 is unidirectional; it only passes data in one direction, as indicated in the functional diagram. Each device features four unidirectional channels that operate independently with guaranteed data rates from DC up to 25Mbps (B/E/M/R/U versions), or from DC to 200Mbps (C/F/N/S/V versions). The output driver of each channel is push-pull, eliminating the need for pullup resistors. The outputs are able to drive both TTL and CMOS logic inputs. Startup and Undervoltage-Lockout The VDDA and VDDB supplies are both internally monitored for undervoltage conditions. Undervoltage events can occur during power-up, power-down, or during normal operation due to a sagging supply voltage. When an undervoltage condition is detected on either supply while the outputs are enabled, all outputs go to their default states regardless of the state of the inputs (Table 3, Table 4, Table 5). Figure 5 through Figure 8 show the behavior of the outputs during power-up and power-down. Table 3. MAX2244_B/C/E/F Output Behavior During Undervoltage Conditions VIN_ 1 0 X X VDDA Powered VDDB Powered Powered Powered Undervoltage Powered Powered Undervoltage ENA 1 0 1 0 1 0 1 0 ENB 1 0 1 0 1 0 1 0 VOUTA High Hi-Z Low Hi-Z Default Hi-Z Default Hi-Z VOUTB High Hi-Z Low Hi-Z Default Hi-Z Default Hi-Z www.maximintegrated.com Maxim Integrated 22 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Table 4. MAX22445R/S/U/V Output Behavior During Undervoltage Conditions VIN_ 1 0 X X VDDA Powered VDDB Powered Powered Powered Undervoltage Powered Powered Undervoltage ENA 0 1 0 1 0 1 0 1 ENB 1 0 1 0 1 0 1 0 VOUTA High Hi-Z Low Hi-Z Default Hi-Z Default Hi-Z VOUTB High Hi-Z Low Hi-Z Default Hi-Z Default Hi-Z Table 5. MAX2244_M/N Output Behavior During Undervoltage Conditions VIN_ 1 0 X X VDDA Powered VDDB Powered Powered Powered Undervoltage Powered Powered Undervoltage DEFA = DEFB 1 0 1 0 1 0 1 0 VOUTA High High Low Low Default (High) Default (Low) Default (High) Default (Low) VOUTB High High Low Low Default (High) Default (Low) Default (High) Default (Low) MAX2244_B/C/M/N/R/S INPUTS SET TO HIGH f ig05 MAX2244_M/N, DEFAULT SET TO HIGH VDDA VDDB OUT_A 2V/div OUT_B 200�s/div Figure 5. Undervoltage Lockout Behavior (MAX2244_ High) MAX2244_E/F/M/N/U/V INPUTS SET TO HIGH f ig06 MAX2244_M/N, DEFAULT SET TO LOW VDDA VDDB 2V/div OUT_A OUT_B 200�s/div Figure 6. Undervoltage Lockout Behavior (MAX2244_ High) www.maximintegrated.com Maxim Integrated 23 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators MAX2244_B/C/M/N/R/S INPUTS SET TO LOW f ig07 MAX2244_M/N, DEFAULT SET TO HIGH VDDA MAX2244_E/FM/N//U/V INPUTS SET TO LOW f ig08 MAX2244_M/N, DEFAULT SET TO LOW VDDA VDDB 2V/div VDDB 2V/div OUT_A OUT_A OUT_B 200�s/div Figure 7. Undervoltage Lockout Behavior (MAX2244_ Low) Selectable Output Default (DEFA, DEFB) (MAX2244_M/N Only) The default is the state the output assumes when the input is not powered or if the input is open circuit. The MAX2244_M/N feature user-selectable default-high or default-low outputs. Set both DEFA and DEFB high to set all channels to default-high, or set both DEFA and DEFB low to set all channels to default-low. Ensure the logic state (high or low) of DEFA is the same as that for DEFB. Do not toggle DEFA or DEFB during normal operation. Applications Information Power-Supply Sequencing The MAX22444-MAX22446 do not require special power supply sequencing. The logic levels are set independently on either side by VDDA and VDDB. Each supply can be present over the entire specified range regardless of the level or presence of the other supply. Power-Supply Decoupling To reduce ripple and the chance of introducing data errors, bypass VDDA and VDDB with 0.1F low-ESR ceramic capacitors to GNDA and GNDB, respectively. Place the bypass capacitors as close to the power supply input pins as possible. Layout Considerations The PCB designer should follow some critical recommendations in order to get the best performance from the design. OUT_B 200�s/div Figure 8. Undervoltage Lockout Behavior (MAX2244_ Low) Keep the input/output traces as short as possible. To keep signal paths low-inductance, avoid using vias. Have a solid ground plane underneath the highspeed signal layer. Keep the area underneath the MAX22444-MAX22446 free from ground and signal planes. Any galvanic or metallic connection between the Side A and Side B defeats the isolation. Calculating Power Dissipation The required current for a given supply (VDDA or VDDB) can be estimated by summing the current required for each channel. The supply current for a channel depends on whether the channel is an input or an output, the channel's data rate, and the capacitive or resistive load if it is an output. The typical current for an input or output at any data rate can be estimated from the graphs in Figure 9 and Figure 10. Please note that the data in Figure 9 and Figure 10 are extrapolated from the supply current measurements in a typical operating condition. The total current for a single channel is the sum of the "no load" current (shown in Figure 9 and Figure 10) which is a function of Voltage and Data Rate, and the "load current," which depends on the type of load. Current into a capacitive load is a function of the load capacitance, the switching frequency, and the supply voltage. where ICL = CL � fSW � VDD ICL is the current required to drive the capacitive load. CL is the load capacitance on the isolator's output pin. www.maximintegrated.com Maxim Integrated 24 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators fSW is the switching frequency (bits per second / 2). VDD is the supply voltage on the output side of the isolator. Current into a resistive load depends on the load resistance, the supply voltage and the average duty cycle of the data waveform. The DC load current can be conservatively estimated by assuming the output is always high. where IRL = VDD � RL IRL is the current required to drive the resistive load. VDD is the supply voltage on the output side of the isolator. RL is the load resistance on the isolator's output pin. Example (shown in Figure 11): A MAX22445 is operating with VDDA = 2.5V, VDDB = 3.3V, channel 1 operating at 20Mbps with a 10pF capacitive load, channel 2 held high with a 10k resistive load, and channel 4 operating at 100Mbps with a 15pF capacitive load. Channel 3 is not in use and the resistive load is negligible since the isolator is driving a CMOS input. Refer to Table 6 and Table 7 for VDDA and VDDB supply current calculation worksheets. VDDA must supply: Channel 1 is an input channel operating at 2.5V and 20Mbps, consuming 0.33mA, estimated from Figure 9. Channel 2 and 3 are input channels operating at 2.5V with DC signal, consuming 0.14mA, estimated from Figure 9. Channel 4 is an output channel operating at 2.5V and 100Mbps, consuming 0.77mA, estimated from Figure 10. ICL on channel 4 for 15pF capacitor at 2.5V and 100Mbps is 1.875mA. Total current for side A = 0.33 + 0.14 � 2 + 0.77 + 1.875 = 3.255mA, typical VDDB must supply: Channel 1 is an output channel operating at 3.3V and 20Mbps, consuming 0.40mA, estimated from Figure 10. Channel 2 and 3 are output channels operating at 3.3V with DC signal, consuming 0.27mA, estimated from Figure 10. Channel 4 is an input channel operating at 3.3V and 100Mbps, consuming 1.11mA, estimated from Figure 9. ICL on channel 1 for 10pF capacitor at 3.3V and 20Mbps is 0.33mA. IRL on channel 2 for 10k resistor held at 3.3V is 0.33mA. Total current for side B = 0.40 + 0.27 � 2 + 1.11 + 0.33 + 0.33 = 2.71mA, typical Table 6. Side A Supply Current Calculation Worksheet SIDE A Channel 1 2 3 4 IN/ OUT IN IN IN OUT Data Rate (Mbps) 20 0 0 100 Load Type VDDA = 2.5V Load "No Load" Current (mA) 0.33 0.14 0.14 Capacitive 15pF 0.77 Total: 3.26mA Load Current (mA) 2.5V x 50MHz x 15pF = 1.875mA Table 7. Side B Supply Current Calculation Worksheet SIDE B Channel 1 2 3 4 IN/ OUT OUT OUT OUT IN Data Rate (Mbps) 20 0 0 100 VDDB = 3.3V Load Type Load "No Load" Current (mA) Capacitive 10pF 0.40 Resistive 10k 0.27 0.27 1.11 Total: 2.71mA Load Current (mA) 3.3V x 10MHz x 10pF = 0.33mA 3.3V / 10k = 0.33mA www.maximintegrated.com Maxim Integrated 25 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators SUPPLY CURRENT (mA) SUPPLY CURRENT (mA) SUPPLY CURRENT PER INPUT CHANNEL vs. DATA RATE 2.5 fig09 2 1.5 1 0.5 0 0 VDDA = 1.8V VDDA = 2.5V VDDA = 3.3V VDDA = 5.0V 25 50 75 100 125 150 175 200 DATA RATE (Mbps) Figure 9. Supply Current Per Input Channel (Estimated) SUPPLY CURRENT PER OUTPUT CHANNEL vs. DATA RATE 3 fig10 VDDB = 1.8V 2.5 VDDB = 2.5V VDDB = 3.3V 2 VDDB = 5.0V CL = 0pF 1.5 1 0.5 0 0 25 50 75 100 125 150 175 200 DATA RATE (Mbps) Figure 10. Supply Current Per Output Channel (Estimated) 2.5V VDDA 20Mbps IN1 2.5V IN2 MAX22445C/F 3.3V VDDB ENB OUT1 20Mbps 10pF OUT2 10k 100Mbps 15pF IN3 OUT4 ENA GNDA Figure 11. Example Circuit for Supply Current Calculation www.maximintegrated.com OUT3 IN4 100Mbps GNDB Maxim Integrated 26 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Typical Operating Circuits 3.3V VDDA 0.1�F IN1 MAX22444B/C/E/F VDDB ENB OUT1 5V 24V 5V VOUT 0.1�F IN2 OUT2 IN3 OUT3 GPIO PORT 24V DIGITAL I/O WITH 5V INTERFACE IN4 OUT4 GNDA GNDB 3.3V 0.1�F VDDB ENB OUT1 MAX22444B/C/E/F 5V VDDA 0.1�F IN1 OUT2 IN2 OUT3 IN3 OUT4 GNDB IN4 GNDA ISOLATED DIGITAL I/O www.maximintegrated.com Maxim Integrated 27 MAX22444�MAX22446 Typical Operating Circuits (continued) Reinforced, Fast, Low-Power, Four-Channel Digital Isolators 2.5V VDDA 0.1�F MAX22445R/S/U/V CS IN1 SCLK IN2 MOSI IN3 VDDB ENB OUT1 3.3V 0.1�F CS OUT2 SCLK MOSI ADC OUT3 MISO MICROCONTROLLER MISO OUT4 ENA GNDA IN4 GNDB ISOLATED SPI INTERFACE www.maximintegrated.com Maxim Integrated 28 MAX22444�MAX22446 Typical Operating Circuits (continued) Reinforced, Fast, Low-Power, Four-Channel Digital Isolators 2.5V VDDA 0.1�F IN1 MAX22446B/E 5V VDDB ENB OUT1 0.1�F T1IN MICROCONTROLLER MAX13223 RS-232 TRANSCEIVER IN2 OUT2 T2IN OUT3 IN3 OUT4 ENA GNDA IN4 GNDB ISOLATED RS-232 INTERFACE R1OUT R2OUT www.maximintegrated.com Maxim Integrated 29 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Product Selector Guide MAX2244 4 B A W E + CHANNEL CONFIGURATION 4: 4/0 5: 3/1 6: 2/2 MAXIMUM DATA RATE DEFAULT OUTPUT ENA POLARITY (SEE TABLE) TEMP RANGE: -40� C TO +125� C PACKAGE: W SOIC PINS: 16 LEAD-FREE/ROHS COMPLIANT DEVICE CONFIGURATION DEFAULT-HIGH OUTPUT DEFAULT-LOW OUTPUT SELECTABLE DEFAULT OUTPUT STATE ACTIVE-HIGH EN_ MAX DATA RATE 25Mbps 200Mbps B C E F ACTIVE-LOW ENA MAX DATA RATE 25Mbps 200Mbps R S U V M N Ordering Information PART CHANNEL CONFIGU- RATION DATA RATE (Mbps) DEFAULT OUTPUT MAX22444BAWE+* 4/0 25 Default High MAX22444CAWE+* 4/0 200 Default High MAX22444EAWE+* 4/0 25 Default Low MAX22444FAWE+* 4/0 200 Default Low MAX22444MAWE+* 4/0 25 Selectable MAX22444NAWE+* 4/0 200 Selectable MAX22445BAWE+* 3/1 25 Default High MAX22445CAWE+* 3/1 200 Default High MAX22445EAWE+ 3/1 25 Default Low MAX22445FAWE+ 3/1 200 Default Low MAX22445MAWE+* 3/1 25 Selectable MAX22445NAWE+* 3/1 200 Selectable MAX22445RAWE+ 3/1 25 Default High MAX22445SAWE+* 3/1 200 Default High MAX22445UAWE+* 3/1 25 Default Low MAX22445VAWE+* 3/1 200 Default Low MAX22446BAWE+* 2/2 25 Default High MAX22446CAWE+ 2/2 200 Default High MAX22446EAWE+* 2/2 25 Default Low MAX22446FAWE+* 2/2 200 Default Low MAX22446MAWE+* 2/2 25 Selectable MAX22446NAWE+* 2/2 200 Selectable *Future Product--Contact Maxim for availability. +Denotes a lead(Pb)-free/RoHS-compliant package. ENA POLARITY Active-High Active-High Active-High Active-High -- -- Active-High Active-High Active-High Active-High -- -- Active-Low Active-Low Active-Low Active-Low Active-High Active-High Active-High Active-High -- -- ISOLATION VOLTAGE (kVRMS) 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 TEMP RANGE (�C) -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 -40 to +125 Chip Information PROCESS: BiCMOS PIN-PACKAGE 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC 16 Wide SOIC www.maximintegrated.com Maxim Integrated 30 MAX22444�MAX22446 Reinforced, Fast, Low-Power, Four-Channel Digital Isolators Revision History REVISION REVISION NUMBER DATE DESCRIPTION 0 2/18 Initial release 1 10/18 Removed Future Product designation from MAX22446CAWE+ 2 1/19 Updated Safety Regulatory Approvals section and added a Safety Regulatory Approvals table 3 3/19 Updated General Description and Table 1 Updated Safety Regulatory Approvals section and added a Safety Regulatory 4 9/19 Approvals table; Corrected typo in Revision History table Updated the General Description section and the Safety Regulatory Approvals 5 10/19 table 6 1/20 Removed future product designation from MAX2245EAWE+ 7 3/20 Removed future product designation from MAX22445RAWE+ PAGES CHANGED -- 30 1, 10 1, 10 1, 10, 31 1, 10 30 30 For pricing, delivery, and ordering information, please visit Maxim Integrated's online storefront at https://www.maximintegrated.com/en/storefront/storefront.html. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. �2020 Maxim Integrated Products, Inc. 31