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TMUX7202: Switch status when no power is present

DERUN KARABEYOGLU
Prodigy 30 points
Part Number: TMUX7202

Hi all.

I am planning to use TMUX7202 as a switch to short the output of a circuit to the ground during start-up.

I am wondering, if I set SEL pin to low when no power is present, is switch in closed or high impedance state?

Thank you.

Derun

  • +1
    Guru 283700 points

    There are clamping diodes to the power supply rails. When powered off, you must not apply any voltage to the I/O pins. (See the absolute maximum ratings.)

    TI does not make any switches that are guaranteed to be closed when powered off.

  • 0 in reply to Clemens Ladisch
    Prodigy 30 points

    Hi Clemens,

    Thank you for answer. I think it is mentioned in the datasheet that applying voltage to only SEL pin is ok without any power. Fail-Safe Logic circuitry allows voltages on the control pins to be applied before the supply pin, protecting the device from potential damage. Anyway, you answered my question, thank you.