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ISO35: Isolation Rating

Lilian Chang
Intellectual 1555 points
Part Number: ISO35
Other Parts Discussed in Thread: ISO7741, ISOW7841, SN65HVD1473

Hi Team,

If ISO35 can support max 3000 Vrms Isolation Rating?  Although I found it is only 2500Vrms in datasheet...

If not, do we have any other P2P device can support 3000Vrms Isolation Rating ?

 

Thank you.

  • 0
    TI__Expert 6195 points

    Hi Lilian,

    Thanks for posting your question on E2E. We do not currently have an isolated RS-485 transceiver that supports 3kVrms Isolation. You are correct that the ISO35 datasheet specification for isolation is 2500 Vrms as per UL 1577 and CSA CA5A and IEC 60950-1. I do not have any pin-to-pin compatible solutions for you at this time.

    To meet 3kVrms Isolation, I would recommend an isolator + RS-485 transceiver such as the ISO7741 + SN65HVD1473. If you also need isolated power, consider ISOW7841 + SN65HVD1473 which can be seen in the Isolated RS-485 With Integrated Signal and Power

    Reference Design. Both of these solutions would give you at least 5kVrms isolation.

    Let me know if that answers your question!

    Best regards, 

    Dan