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HD3SS3212: Powered off behavior

Jonathan Doorn
Prodigy 20 points
Part Number: HD3SS3212

When the device HD3SS3212 is not powered on, are the switches expected to be open, or do they default to port B or port C?

  • 0
    TI__Mastermind 22185 points

    Hi Jonathan,

    When unpowered, the switches are open.

    Best,

    Shane

  • 0
    TI__Mastermind 22185 points

    Hi Jonathan,

    From your message I see you're looking for resources on using this MUX in a USB-C application.

    The HD3SS3212 datasheet has a USB-C typical application schematic. This is a good reference for how the MUX connects to the Type-C port and USB device:

    I found a good explanation for how the HD3SS3212 fits into a USB-C system at this resource. To summarize, a MUX like the HD3SS3212 is needed to switch the USB TX and RX lanes between the normal and flip orientations. This is what allows a USB-C plug to work regardless of the orientation.

    Let me know if you have any questions.

    Best,

    Shane