The LM393 consists of two independent voltage comparators with an offset voltage specification as low as 2.0mV max.for two comparators which were designed specifically to operation from a single power supply over a wide range of voltages. Operate from split power supplies is also possible,and the low power supply current drain is independent of the magnitude of the power supply voltage.These comparators also have a unique characteristic in that the input common-mode voltage range includes ground,even though operated from a single power supply voltage.
Wide supply voltage range： single supply operation： 2V to 36V dual supply operation：±1V to ±18V
Very low supply current drain (0.8m,A) independent of supply voltage(2.0mW/comparator at 5.0 VDC)
Low input biasing current： 25nA
Low input offset current： 5.0nA; Low input offset voltage： 5.0mV
Input common-mode voltage range includes ground
Differential input voltage range equal to the power supply voltage
Output voltage compatible with TTL,DTL,ECL,MOS and CMOS logic systems.