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ISO1432: Please confirm if I need to use an Isolation transformer for power supply on the bus side.

Intellectual 340 points

Replies: 4

Views: 51

Part Number: ISO1432


I need a fully isolated RS485 transceiver, this means power supply on the bus side must be isolated. No need to use any kind of isolation transformer for bus side supply. 

I saw that ISO14xx series devices have these feature. But in the typical application it is shown that an isolation transformer will be required for VCC2.

Can you please confirm if I will need isolation transformer for VCC2 ?

Currently I am using ADM2582E from Analog Devices which is fully isolated as per my requirement. I would like to replace it with ISO14xx series from TI.

Please provide your thought on same.