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TUSB2077 schematic review

Shu-Cheng LIN
Guru 11785 points
Other Parts Discussed in Thread: TUSB2077A

Hi Sirs,

Sorry to bother you.

We have design TUSB2077A. Something of schematic need confirm.(Like if power on Pin Floating are OK??)

Could you help us to double confirm again?? 

Any suggestion are welcome.

Many thanks for your support.

Schematic as below

  • TI__Mastermind 18655 points
    Hello Shu-Cheng,

    The DP and DM signals of the unused port should be tied to ground with 15K resistors like the pull-downs used on the active ports.
    As you design does not have external power switch devices The OVRCUR/ inputs can be left tied togheter to a pull-up resistor. The PWRON/ output can be left unconnected.

    Please make sure taht the power up sequence meets the datasheet requirement.

    Regards,
    Joel