ZHCSKS4H October 2009 – January 2025 TL331-Q1 , TL331B-Q1 , TL391B-Q1
PRODMIX
For fast response and comparison applications with noisy or AC inputs, TI recommends using a bypass capacitor on the supply pin to reject any variation on the supply voltage. This variation can distort the comparator's input common mode range and create an inaccurate comparison.