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TCA9517 - Any problem only having either of the VCCx powered ?

Kawai
Guru 19785 points

Other Parts Discussed in Thread: TCA9517

Hello Team,

There is a case only having either of the power supply, VDDA or VDDB, for TCA9517. Would TCA9517 have any problem if customer application may stay in this state for a very long time ?

Best Regards,

Kawai

  • 0
    TI__Genius 16560 points

    Hello Kawai-san,

    Short answer is no, there would be no damage/problem to the device if it stayed in a state where only 1 power rail was high for a long time.

    The device features a powered off high-Z mode, where if any of the power rails go to 0, then the SDA and SCL ports get placed into a high impedance mode, to prevent signal corruption.

    Regards,

    Jonathan

  • 0 in reply to Jonathan Valdez
    Guru 19785 points
    Hello Jonathan-san,

    I understood that it would not be a problem. I greatly appreciate for your prompt reply.

    Best Regards,
    Kawai