LM393P datasheet by Texas Instruments

LM393P Frequently Asked Questions (FAQs)

• What is the maximum voltage that can be applied to the input pins?
  The maximum voltage that can be applied to the input pins is the supply voltage (VCC) + 0.3V. Exceeding this voltage can cause damage to the device.
• How do I ensure that the output is not oscillating when the input voltage is near the threshold?
  To prevent oscillation, add hysteresis to the comparator by connecting a resistor and capacitor between the output and the non-inverting input. This creates a Schmitt trigger configuration.
• What is the minimum input voltage required for the comparator to function correctly?
  The minimum input voltage required is 1.5V, but the device can operate down to 1.2V with reduced performance. Below 1.2V, the device may not function correctly.
• Can I use the LM393P as an amplifier?
  No, the LM393P is a comparator, not an amplifier. It is designed to compare two voltages and output a digital signal, not to amplify a signal.
• How do I reduce the power consumption of the LM393P?
  To reduce power consumption, use a lower supply voltage (VCC) and reduce the frequency of the input signal. You can also use a voltage regulator to regulate the supply voltage.