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PCA9555: what's the difference between PCA9555 and PCA9548A

Part Number: PCA9555
Other Parts Discussed in Thread: PCA9548A

Hi, what's the difference between PCA9555 and PCA9548A?

I can't find the datasheet of PCA9548A from Does PCA9548A cover all specs of PCA9555 and replace it?

You can also contact me by email if necessary, thanks.

  • Hey Anders,

    Is it possible that you have posted the wrong device numbers? PCA9555 is an IO expander and PCA9548A is a switch. They are completely different devices. They would not be pin to pin replacements because they perform different tasks/solve different problems.