Hi team,
Please let me confirm this just in case.
Is it no problem to apply 3.3V to the differential inputs during powered-off?
Regarsd,
Noriyuki Takahashi
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
Hi team,
Please let me confirm this just in case.
Is it no problem to apply 3.3V to the differential inputs during powered-off?
Regarsd,
Noriyuki Takahashi
Hi Takahashi-san,
Yes you can apply 3.3V to differential pins (A,B inputs) when VCC = 0V and it shouldn't damage device.
That being said there is a weak pull-up resistor to VCC on non-inverting input (A) and a weak pull-down resistor to GND on inverting input (B) - so a small amount of current could flow through the unpowered VCC - but it would be very small - as the path to VCC would have approximately 205k ohms in-between "A" and "VCC" - but there could be some leakage onto that power rail.
Please let me know if you have any other questions!
Best,
Parker Dodson