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TCA9548A: Unused SDX/SCX pins termination

Kazuhiko Hirano
Genius 16188 points

Part Number: TCA9548A

Hello,

At TCA9548A, unused channel SDX/SCX pins can be floating (open)?
Or some terminations are required?

Best regards,

K.Hirano

  • +1
    TI__Guru 55161 points

    Hey Kazuhiko,

    Yes, you can leave the unused SDA/ SCL pins floating (also good practice to disable these channels). However, if they are to be enabled during operation, the best option is to pull the unused channels to VCC so proper I2C communication can still occur. 

    Regards,

    Jack