ADUM5401 Schematic Review


Attached is isolator design by using ADI ADUM5401.

Could you help to check whether this interface between ADUM5401 and TI TRS3221E( For RS232) and TI SN65HVD72D( For RS485) correct?

Please recommend me the maximum worse case voltage/current threshold that the RS485 lines of this chip (RS485_D+ and RS485_D-) can handle on the positive and negative sides? I prefer not to use any protection diodes externally.

Please also recommend any analysis and interface using ADuM5401 to provide isolated RS232/485 interface re-using the same circuit?