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ISO7762: Can VCC1 > VCC2 Power supply ?

Part Number: ISO7762
Other Parts Discussed in Thread: ISO7760, , ISOW1412, ISO1500, ISO1410


We are planning to use ISO7760 IC in our custom board. I have few doubts are listed below . Please clarify.

1.Can we use this IC to RS422 signals for isolation?

2. Any of condition is there to give Power supply to ISO77xx ICs ( like VCC1>VCC2   or VCC1=VCC2 or  VCC1<VCC2)?

3. Can we connect VCC1=3.3V and VCC2=5V?