Due to a wiring error, I have an application in which EN and VREF2 are tied together, and they are then connected through a 200kohm resistor to 5.0V. However the VDPU (pullups for SCL and SDA) is 3.3V, and the I2C devices on that side of the PCA9306 are 3.3V. Note also that VREF1 is also 3.3V; the part is this application was previously used as a 3.3V-to-5V translator - it was adapted to be a 3.3V-to-3.3V "translator" (i.e. no translation but the part was left in the circuit), however the voltage connected to EN and VREF2 was not changed.
What are the implications for the voltage difference between EN/VREF2 and VDPU? The part appears to function properly.
