SLCS161 June 2017 LM139A-MIL
To create an accurate comparator application without hysteresis, maintain a stable power supply with minimized noise and glitches, which can affect the high level input common-mode voltage range. To achieve this accuracy, add a bypass capacitor between the supply voltage and ground. Place a bypass capacitor on the positive power supply and negative supply (if available).
NOTE
If a negative supply is not being used, do not place a capacitor between the GND pin of the device and system ground.