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ADuM3221WBRZ Datasheet(PDF) 8 Page - Analog Devices |
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ADuM3221WBRZ Datasheet(HTML) 8 Page - Analog Devices |
8 / 16 page ADuM3220/ADuM3221 Data Sheet Rev. C | Page 8 of 16 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS VDD1 1 VIA 2 VIB 3 GND1 4 VDD2 8 VOA 7 VOB 6 GND2 5 ADuM3220/ ADuM3221 TOP VIEW (Not to Scale) Figure 4. Pin Configuration Table 10. Pin Function Descriptions Pin No. Mnemonic Description 1 V DD1 Supply Voltage for Isolator Side 1, 3.0 V to 5.5 V. 2 V IA Logic Input A. 3 V IB Logic Input B. 4 GND 1 Ground 1. Ground reference for Isolator Side 1. 5 GND 2 Ground 2. Ground reference for Isolator Side 2. 6 V OB Logic Output B. 7 V OA Logic Output A. 8 V DD2 Supply Voltage for Isolator Side 2, 4.5 V to 18 V. Table 11. Truth Table, ADuM3220 (Positive Logic)1 V IA Input V IB Input V DD1 State V DD2 State V OA Output V OB Output Notes L L Powered Powered L L L H Powered Powered L H H L Powered Powered H L H H Powered Powered L L X X Unpowered Powered L L Outputs return to the input state within 1 µs of V DD1 power restoration. X X Powered Unpowered L L Outputs return to the input state within 1 µs of V DD2 power restoration. 1 X = don’t care, L = low, H = high. Table 12. Truth Table, ADuM3221 (Positive Logic)1 VIA Input VIB Input VDD1 State VDD2 State VOA Output VOB Output Notes L L Powered Powered L L L H Powered Powered L H H L Powered Powered H L H H Powered Powered H H X X Unpowered Powered L L Outputs return to the input state within 1 µs of V DD1 power restoration. X X Powered Unpowered L L Outputs return to the input state within 1 µs of V DD2 power restoration. 1 X = don’t care, L = low, H = high. |
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