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ISO1412: ISO1412

Prodigy 90 points

Replies: 4

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Part Number: ISO1412

HI

 we are designing system with RS422 interface.

we deciided to have ISO1412B RS422 transceiver with isolation IC in our design.

i have studied the datasheet and specified that 2 separate power supplies and 2 separate ground are required.

In my PCB, i am having only one 3.3V voltage supply and one Ground.

In Reference design, i have seen other circuit is used i.e. SN6505, TPS76350 

Whether both power supplies, grounds  should be isolated or not.

regards

K.Jayalakshmi