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TMUX1574: TMUX1574 Powered-off protection for Drain pins

SYLVAIN BOURIOT
Intellectual 440 points
Part Number: TMUX1574

Tool/software:

Hi,

In the datasheet, the  powered-off I/O pin leakeage current is only specified  for "Source pins" (VS = 0V to 3.V and 3.6V):

Could we apply a voltage level  (between 0 and 3.6V) to "Drain pins" when  VDD=0?

What is the leakage current for Drain pins in this case?

Best Regards

Sylvain

  • 0
    TI__Mastermind 35168 points

    Hi Sylvain,

    We don't have data on that so I can't say for certain. Give me a day to dig around to see if I can find some definitive answer. In theory though it should be built symmetrically so we can assume that the leakage is the same both ways though. just want to see if I can get a hold of someone who actually worked on the device when it was released that may have a better idea.

    Thanks for your patients!
    Rami

  • 0 in reply to Rami Mooti1
    Intellectual 440 points

    Hello Rami.

    I'm sorry to contact you again. Have you found any information? 

    Sylvain

  • +1 in reply to SYLVAIN BOURIOT
    TI__Mastermind 35168 points

    Hi Sylvain,

    No need to apologize, I'm the one who is sorry for forgetting to come back and provide the answer to this! Thanks for the reminder

    So I was actually mistaken. From the drain side you'll have more leakage since it's a 2:1 and connected to 2 switches. It would be close to double from the drain vs the source if you were too apply a Vs to both sources that are connected to the drain you're measuring. 
    If you connect just one it will still be greater than just the source side but not as large of a different. 
    Unfortunately, though I won't be able to provide any exact numbers since we haven't tested it in this manner. 

    Thanks!
    Rami

  • 0 in reply to Rami Mooti1
    Intellectual 440 points

    Hello Rami.

    Thank you very much for your reply.

    Sylvain