LM393 Low Offset Dual Comparator

The LM193-N series consists of two independent precision voltage comparators with an offset voltage specification as low as 2.0 mV max for two comparators which were designed specifically to operate from a single power supply over a wide range of voltages.
Quick View of LM393 Low Offset Dual Comparator:

Two Independent Precision Voltage Comparators.
Single or Dual Supply Operation.
Input Offset Voltage: 1 mV.
Input Offset Current: 3 nA.
Input Bias Current: 25 nA.
Supply Current: 0.4 MA.