20 Pack LM339 IC Low-Power Low-Offset Voltage Quad Comparator, 14 Pin DIPThe LMx39 N series consists of four independent precision voltage comparators with an offset voltage specification as low as 2 mV maximum for all four comparators. These comparators were designed specifically to operate from a single power supply over a wide range of voltages. Operation 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