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TCA9539-Q1: RESET Pin design confirm

Lanxi Li
Expert 7295 points

Part Number: TCA9539-Q1

Hello team,

My customer has design question about reset pin.

We only see the min tw is 6ns, but there is no spec about the rising edge of RESET.

1. What is the recommend pull-up resistance of RESET pin?

2. And what is the recommended filter capacitor here?

3. Do any digital filter integrated in the RESET pin?

Thank.

Lanxi

  • 0
    TI__Mastermind 49091 points

    Hey Lanxi,

     A pullup resistor is only needed on the RESET pin if no active connection is being used. If a pull is to be used- generally 10kOhms should be sufficient enough. Note that there isn't any digital filters present on the RESET pin and no filter caps are needed on the RESET pin.

    Regards,

    Jack