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AM26LV32E: Applying 3.3V to the differential inputs during powered-off

Noriyuki Takahashi
Genius 12080 points

Part Number: AM26LV32E

Hi team,

Please let me confirm this just in case.

Is it no problem to apply 3.3V to the differential inputs during powered-off?

Regarsd,

Noriyuki Takahashi

  • +1
    TI__Guru 54042 points

    Hi Takahashi-san,

    Yes you can apply 3.3V to differential pins (A,B inputs) when VCC = 0V and it shouldn't damage device. 

    That being said there is a weak pull-up resistor to VCC on non-inverting input (A) and a weak pull-down resistor to GND on inverting input (B) - so a small amount of current could flow through the unpowered VCC - but it would be very small - as the path to VCC would have approximately 205k ohms in-between "A" and "VCC"  - but there could be some leakage onto that power rail. 

    Please let me know if you have any other questions!

    Best,

    Parker Dodson