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.
To prevent oscillation, ensure that the input signals are clean and free of noise. You can also add hysteresis to the comparator by adding a small amount of positive feedback from the output to the non-inverting input.
The minimum input voltage required for the comparator to function correctly is typically around 1.5V to 2V above the negative supply voltage (VSS). Below this voltage, the comparator may not function correctly.
No, the LM339AD is a comparator, not an amplifier. It is designed to compare two input voltages and output a digital signal indicating which input is higher. It is not suitable for amplifying small signals.
To reduce power consumption, consider using a lower supply voltage (VCC) and reducing the frequency of the input signals. You can also use a lower-power version of the comparator, such as the LMV339.
LM339AD datasheet
by STMicroelectronics
