Unused Outputs on TCA9546A

Antoni Negri

Other Parts Discussed in Thread: TCA9546A

Hello,

What should be done with unused output channels on the TCA9546A i.e. say i only want to use 3 of the 4 channels. Should the unused channels be pulled high via resistors, tied high, left floating, tied low or pulled low?

Regards,

Antoni.

over 9 years ago

0 Siby James over 9 years ago

TI__Expert 5140 points

Hi Antoni,

My recommendation for the unused channels would be to pull these up via weak pullup (~100k should be fine) to Vcc.

Thanks,
Siby

0 Antoni Negri over 9 years ago in reply to Siby James

Prodigy 60 points

Thank you for the answer.

Regards,

Antoni

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Unused Outputs on TCA9546A