TCA9548A: TCA9548AMRGER Unused channels _Left open or Pullup

ANBARASU SEMBANAN

Prodigy 10 points

Part Number: TCA9548A

Tool/software:

Hi All,

I am using the TCA9548AMRGER one of my application, In that out of 8 channels i am using only 3 output channels.

So rest 5 channels are unused , so please confirm the unused channels can be left open or need to pulled-up?

Regards,

Anbarasu S

over 1 year ago

0 Clemens Ladisch over 1 year ago

Guru 318030 points

I2C is a slow protocol; unused channels that are never enabled can be left open.

0 Nir Gilgur over 1 year ago

TI__Mastermind 19765 points

Hello Anbarasu,

Today is a TI Holiday, please expect a delayed response.

Thanks,

Nir

0 Nir Gilgur over 1 year ago

TI__Mastermind 19765 points

Hello Anbarasu,

As Clemens mentioned you can leave the unused pins floating, but we do recommend to tie them to ground with a 50ohms termination resistor to avoid any issues.

Please see our FAQ on this topic.

Thanks,

Nir

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TCA9548A: TCA9548AMRGER Unused channels _Left open or Pullup