Extra exam question E6C02
Subelement E6, CIRCUIT COMPONENTS· Group E6C
What happens when the level of a comparator’s input signal crosses the threshold voltage?
- A.The IC input can be damaged
- B.The comparator changes its output state (correct answer)
- C.The reference level appears at the output
- D.The feedback loop becomes unstable
WhyWhen a comparator's input signal crosses the threshold voltage, the comparator changes its output state. When a comparator's input signal crosses its threshold voltage, the comparator's output flips from one logic state to the other, that binary state-change is exactly what a comparator is built to do, answer B. Crossing the threshold doesn't damage the IC's input, doesn't cause the reference level itself to appear at the output, and isn't a feedback-loop stability issue.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
Related questions
- E6C01What is the function of hysteresis in a comparator?
- E6C03What is tri-state logic?
- E6C04Which of the following is an advantage of BiCMOS logic?
- E6C05Which of the following digital logic families has the lowest power consumption?
- E6C06Why do CMOS digital integrated circuits have high immunity to noise on the input signal or power supply?