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TCA9535: Need part difference and suggestion.

Krishna Dalal
Prodigy 10 points

Part Number: TCA9535
Other Parts Discussed in Thread: TCA9555,

TCA9535RTWR vs TCA9555  which one is better if we are targetting easy design, low current consumption and targetting UL certification.

 

  • 0
    Guru 323420 points

    The TCA9555 datasheet says:

    The TCA9555 is identical to the TCA9535, except for the inclusion of the internal I/O pull-up resistor, which pulls the I/O to a default high when configured as an input and undriven.

    Whether you want internal pull-up resistors depends on the requirements of your specific circuit.

  • 0
    TI__Mastermind 37060 points

    Hello Krishna,

    As Clemens mentioned, the only difference between TCA9535 and TCA9555 is the internal pull-up resistor on the I/O pins.

    Regards,

    Josh