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TXS0102-Q1: schematic review

user4979899
Expert 3080 points
Part Number: TXS0102-Q1

Hi Sir,

Could you please help to review the TXS0102-Q1 schematic as below?

Thank you

  • 0
    TI__Mastermind 45835 points

    Hey Anne,

    I don't see any issues with this. Make sure to keep the loads light on the I/Os (e.g. short traces, no additional filtering caps, etc)

  • 0
    TI__Expert 3450 points

    Hi Anne,

    This schematic looks fine. The only comments I have are:

    - The R47 and R646 resistors must bias the OE pin high relative to VCCA to enable the I/O pins

    - To clarify on the OE pull down: A pull down on the OE pin is recommended to guarantee that the I/O pins will be in a high impedance state during the process of VCCA and VCCB ramping up. Since this device has VCC isolation, the A pins will be hi-Z while VCCB is 0 V, and the B pins will be hi-Z while VCCA is 0V. Not using the pull down may result in extra power consumption while VCC is ramping, but the device will not be damaged. 

    regards,

    Gabriel