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PCA9546A: Asking for the design on PCA9546 pin floating

Part Number: PCA9546A

 

 

Hi Team,

Customer is designing PCA9546.

If customer did not use SD0 and SC0, can customer let the pin floating?

 

BR,

SHH

  • Hi Kane,

    We generally recommend tying unused ports to Vcc through weak pull-ups (~100k). This provides a stable state in case the channel is inadvertently enabled. This is not necessary for device functionality however, and the pins may be tied to Vcc when trying to reduce the quantity of PCB components. The pin should not be left floating. 

    Regards,
    Eric