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TXB0304: Unused ports

Part Number: TXB0304

Tool/software:

Hello team,

Should I tie the output of the unused ports to GND?

My customer has tied the inputs to GND, but they have observed oscillation at the output.

Best Regards,
Kei Kuwahara

  • All I/O pins are both inputs and outputs at all times.

    Unused I/O pins can be left open.

    Oscillations can happen only with a capacitive or inducitve load. Are there long traces or cables? Are you sure that the oscillations happen without the measurement device?

  • Hi Kei,

    In addition to Clemens' questions, can you confirm the state of VCCA/ VCCB and OE at the time of oscillations? 

    Regards,

    Jack