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TCA9534A: PCA9534A and TCA9534A

Mark Philip Felipe
Genius 9705 points
Part Number: TCA9534A
Other Parts Discussed in Thread: PCA9534A,

Hi Team, aside from the supply voltage we want to further understand the difference between PCA9534A and TCA9534A.

Thank you.

  • 0
    TI__Guru 70312 points

    Mark,

    An engineer has been assigned to this thread and will respond accordingly. Thank you for your patience.

    Regards,

    Eric Hackett 

  • 0
    TI__Expert 8030 points

    Hi Mark,

    In general, the TCA9534A is a functionally enhanced version of the PCA9534A. All TCA devices are pin to pin compatible with their
    PCA counterparts. Aside from the supply voltage range differences, the two devices are different from each other in the following ways:

    -The TCA9534A has an improved power-on reset circuit

    -The PCA9534A has issues where interrupts on the INT pin are improperly de-asserted under specific conditions. The TCA9534A does not have these issues.

    -The TCA devices are created with upgraded manufacturing processes, which make them cheaper than their PCA counterparts.

    Best,
    Kenneth