LM393M/NOPB datasheet by Texas Instruments

LM393M/NOPB 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, which is typically 36V for the LM393M/NOPB.
• How do I ensure the comparator output is not oscillating?
  To prevent oscillation, ensure that the input voltage difference is greater than the input offset voltage (typically 2mV), and add a small capacitor (e.g., 10nF) between the output and the negative supply rail.
• Can I use the LM393M/NOPB as an amplifier?
  No, the LM393M/NOPB is a comparator, not an amplifier. It is designed to provide a digital output based on the input voltage difference, not to amplify a signal.
• What is the minimum input voltage difference required for a valid output?
  The minimum input voltage difference required for a valid output is typically around 2mV, but this can vary depending on the specific application and noise conditions.
• Can I use the LM393M/NOPB with a single supply voltage?
  Yes, the LM393M/NOPB can be used with a single supply voltage, but the input voltage range will be limited to the range of the supply voltage.