TCA9546A: TCA9546A can use different PU power question

Brad Tan

Part Number: TCA9546A

Hi TI E2E Team,

Can you help to double check if TCA9546 can use different PU power for each SD/SC0, SD/SC1, SD/SC2, SD/SC3?

It looks like it can be, just want to confirm. thanks for checking & comment.

Ex: I need P3V3 for Vcc, P3V3 for SDA/SCL, 1.8V for SD/SC0,1 ; 3.3v for ch2 and ch3.

+1 Clemens Ladisch over 3 years ago

Guru 321920 points

Yes; all five I²C bus segments can have different voltages.

The only restriction is that V_CC must not be too high; use the lowest voltage (1.8 V).

+1 Eric Schott1 over 3 years ago in reply to Clemens Ladisch

Thanks Clemens!

Hi Brad,

Let us know if you have any more questions.

Regards,
Eric Schott

Interface forum