I would like to connect several microcontrollers as shown in the circuit diagram below. The software makes sure that the PA1 pin always has the low or floating state. It's a kind of open drain control. However, the ATtiny1616 still has a small voltage, up to 0.3×VDD, in its low state. This voltage is slightly different at each pin due to temperature differences and tolerances. This could lead to high currents if more than one pin switches to low. Would the circuit still work? If so, why isn't the small voltage difference from pin to pin a problem?