What happens when the level of a comparator’s input signal crosses the threshold voltage?
The IC input can be damaged
The comparator changes its output state✓Bonne réponse
The reference level appears at the output
The feedback loop becomes unstable
Explication
A comparator does one thing: it reports which of its two inputs is larger, so its output changes state at the moment the input signal crosses the threshold voltage. An ordinary threshold crossing does not damage the input, the reference level does not appear at the output, and a comparator used open-loop has no feedback loop to destabilize.