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TS5A23159: What is the connection of I / O Path when Vcc = 0V?

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Replies: 4

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Part Number: TS5A23159

Hello,

My customer have a question about TS5A32159.

[Q]

What is the connection of I / O Path when Vcc = 0V?
1. COM-NC
2. COM-NO
3. COM, NC and NO are Hi-Z

I think it's 3 because of Isolation in Power-Down Mode, VCC = 0.
Do you recognize me?

If there is Power-Down Mode, it seems that there is no problem if there is an input higher than the power supply voltage.
Why does the input voltage range depend on Vcc at the absolute maximum rating?

Best Regards,

Kaede Kudo

  • Hi Kaede Kudo,

    Our team is currently out of office for the holidays. Please expect a response from me on Thursday, Dec 26!

    Thank you for your patience.

    Regards,

    Kate

  • In reply to Kate Dickson:

    Hi Kate,

    Thank you for your reply,

    Have a good Holiday.

    Best Regards,

    Kaede Kudo

  • In reply to KAEDE KUDO:

    Hi Kaede Kudo,

    You are correct that the I/O path is in the high-Z state when Vcc = 0V. This is isolation in powered-down mode or powered-off protection. You can read more about powered-off protection in this article.

    This feature protects the device and the system when there is a signal present at I/O only while Vcc = 0V.

    This does not imply that the device is protected from a signal above Vcc when Vcc is greater than 0V (the device is powered on). This is why the absolute maximum rating for I/O voltage is dependent on Vcc.

    Are you interested in a device that can support I/O voltage above supply? TMUX1574 is a great switch with powered-off protection that supports input voltage beyond supply!

    Regards,

    Kate

  • In reply to Kate Dickson:

    Hi Kate,

    I'm sorry for my late reply.

    Thank you for your answer, I understood it.

    Best Regards,

    Kaede

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