View lm293 datasheet:

August 2000 LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual Comparators n Reduced VOS drift over temperature General Description n Eliminates need for dual supplies The LM193 series consists of two independent precision n Allows sensing near ground voltage comparators with an offset voltage specification as n Compatible with all forms of logic low as 2.0 mV max for two comparators which were de- n Power drain suitable for battery operation signed 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 Features drain is independent of the magnitude of the power supply n Wide supply voltage. These comparators also have a unique characteris- — Voltage r