Please advise the outcome when THVD2410 has +24V on bus pin A and 0v on bus pin B, when there is no VCC power supply present. Also when bus pin A = 0v and bus pin B = +24v i.e. reversed. Assume equipment is floating/isolated and not connected to anything else (i.e. no earth/ground connection).
Will the device survive and will there be any currents flowing back through GND pin, 5v VCC pin or signal pins into my circuitry ? The datasheet only discusses faults when device is operational i.e. powered, as far as I can see.
I am designing an isolated module with 0v, +24v, RS485_A, RS485_B connection terminals, there is a possibility that users will make incorrect connections (+24v terminal has reverse protection).
Note, my 120ohm terminator resistor is rated for the 4.8W dissapation.