Hello team,
in my application pins DIR1 and OE are connected to 0V, while DIR2 to power supply E2_3V3.
The two power supplies E2_3V3 and E1_3V3 are two power supplies that have only the mass in common. This component is simply used as a "buffer" between the two worlds.
If I disconnect E1_3V3, then I remove the power supply to the microcontroller E1 and the pins B1 and B2 in theory go to high impedance.
Question: in these conditions, pin A1 with floating B1, how does it behave? Does it keep the output high or does it require low output? Or does it go to high impedance?
From the truth table, port A is enabled, in theory it should be a push-pull port, but if there is nothing in input B how does pin A behave?
Please let me know.
Thank you and best regards,
Adrian
