The maximum voltage that can be applied to the input pins is 15V, but it's recommended to keep it below 12V to ensure reliable operation.
To prevent oscillations, ensure that the output is properly terminated, and add a small capacitor (e.g., 10nF) between the output and ground to filter out high-frequency noise.
Use a 10uF capacitor in parallel with a 100nF capacitor between the power supply pins (VCC and GND) to ensure stable operation and reduce noise.
No, the LM139APT is a comparator, not an amplifier. It's designed to provide a digital output based on the input voltage comparison, not to amplify signals.
The pull-up resistor value depends on the load current and the desired output voltage. A general rule of thumb is to use a value between 1kΩ and 10kΩ, but consult the datasheet and application notes for specific guidance.
LM139APT datasheet
by STMicroelectronics
