Hi Team, seeking a recommendation for a possible.
The CPU and the TCA are powered with 3V3, the DACs with 5V.
To keep digital noises as low as possible, the CPU and the TCA9548 may be powered-off, but the 5V pullup resistors will still be supplied.
Because it's 16 I/Os will be pulled up to +5V, but it's 3V3 supply will be off and the pull-up resistors for the "CPU side" will be off too.
Thank you.
-Mark