TCA9548A: VOH, VOL values of serial data and clock

Hi Karhtik,

The TCA9548A is a passive i2c switch where it passes i2c signals between controllers and targets.( This is not a buffer device)

It doesn't have predetermined VOH and VOL for its io pins.( The "VOH" and "VOL") are essentially system dependent

So if a 3.3V pull up resistor  is placed on a io pin of the device, the VOH of that io pin is 3.3V

So if a 5V pull up resistor  is placed on a io pin of the device, the VOH of that io pin is 5V

Here is a video that should help understand how these kind of devices work.

Please let me know if this helps and I can try to explain further if needed.

Regards,

Kameron