Other Parts Discussed in Thread: TCA9538
Hello,
is there a riskt of cross current when power supply of the TCA9538 and the pull up resistors of the I2C interface aren´t on the same power domain?
Intention is to use several I2C slaves on the same bus like the TCA9538. Due to functional reasons the slaves and the MCU are on a continous power domain and has to be functional any time, but the port expander is supplied with a power domain, which can be switched of. So is there arisk to cross current into the switched power domain, via the pull up resistors?
Best regards
Raphael