TCA39306: What kind of processing should be done for the unused pins?

Tamio Yokokura

Part Number: TCA39306
Other Parts Discussed in Thread: SN74AXC1T45, LSF0101

Hi, TCA39306 support team

I would like to use the TCA39306 for GPIO, not for I2C. Now, I'm thinking of using only the SCL1/SCL2 pins and leaving the SDA1/SDA2 pins unused.
In this case, what kind of processing should be done for the unused pins?

Thanks

Tamio

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 317370 points

Unused channels can be left open; see [FAQ] What should be done with unused I/O pins of the level translator devices?

Consider using the LSF0101 or SN74AXC1T45 instead.

0 Tamio Yokokura over 2 years ago in reply to Clemens Ladisch

TI__Expert 3960 points

Hi, Clemens

Thank you for your quick reply.

TCA is similar to LSF. So, the unused I/O pins is disconnected (floating).

Thanks

Tamio

Interface

Interface forum

TCA39306: What kind of processing should be done for the unused pins?