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PCA9548A: PCA9548A vs TCA9548A

Elder Costa17
Expert 2825 points
Part Number: PCA9548A
Other Parts Discussed in Thread: TCA9548A,

I am reviewing a design that has the PCA9548A (specifically the PCA9548ARGER). I was already planning to use the TCA9548A in its place.

I looked at the main specs of the TCA9548A vs PCA9548A and, other than the lower operating VCC for the former, I could not find a significant difference between both.

So, I would like some advice on the differences between boths from hardware and software points of view, if any other than VCC.

Thank you in advance.

PS:  while looking at PCA9548A page ordering list I learned the PCA9548ARGER is NRND and the TCA9555RTWR is recommended as a replacement. It looks like a typo.

  • 0
    TI__Guru 72901 points
    Hey Elder Costa,

    The devices are very similar because our TCA line has minor improvements to the PCA line. In the PCA9548 you can see the device has a reset errata section 9.4.1.1 where in the TCA9548 this has been corrected. The TCA also uses newer processes which results in more cost competitive part than the PCA lines.

    "while looking at PCA9548A page ordering list I learned the PCA9548ARGER is NRND and the TCA9555RTWR is recommended as a replacement. It looks like a typo."
    -Thanks

    -Bobby
  • 0 in reply to BOBBY
    Expert 2825 points
    Bobby, that is very helpful, thank you very much.