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PCA9554 schematic review

Other Parts Discussed in Thread: TCA9554A

Hi Team,

can you please help for the atttached schematic review to see if any design concerns on the customer schematic? Thanks.

Regards,

Arthur

9554 for SOLARBEAM.pdf

  • Hello Aurthur,

    I quickly went through your schematic.  Any of our PCA devices that have a TCA variant, I would suggest using the "TCA" version as these are newer versions of the PCA devices which have corrected previous erratas found in the PCA devices. Another advantage is that these TCA devices typically have lower supply voltage thresholds than the PCA devices. I would recommend using the TCA9554A.

    Otherwise, the schematic looks fine to me.  If you want me to do a larger schematic review for your project let me know.  We can cover sensitive material offline.  Let me know.

    -Francis Houde