Yes I have seen over voltage kill the inputs of op-amps, which changes the "Circuit impedance" on the resistors on the inputs of the fried op amp inputs. A lot of techs I worked with thought the resistors were bad and would change a bunch, but it was the op amps inputs that were fried inside changing the circuits impedance. Do you know what i mean? not sure why that happens tho
Over voltage with Logic Gates, mostly the pull up or pull down resistors get shorted or open
If a pull down or pull up resistor , shorts or opens , what happens?
1.) if a pull down resistor shorts it shorts the input or output to ground, which can change a high state to a low state
2.) If a pull down resistor OPENS , it causes a floating input or output, but what else does a pull down resistor that is OPEN do?
3.) If a pull up resistor is shorted, it shorts the input or output to the + supply voltage
4.) If a pull up resistor is OPEN, what happens? beside that the input or output is floating or has a high impedance state