Other Parts Discussed in Thread: SN74LVC245A, SN74LV245A
Hi,
We are using your IC : SN74ALVC245PWR for our control line isolation. When the VCC line and DIR line of the IC is not powered ON and the A1 (pin 2) is fed with +3.3V HIGH signal, a +2V voltage level is built up on the B1(Pin 18) line. Kindly provide feedback why it is happening like that? Isn't It supposed to isolate the line when external input is given when IC is Powered OFF?. Also, I have attached the circuit diagram for your reference.
Regards
Surya D S