Texas Instruments LM339A

these devices consist of four independent voltage comparators that are designed to operate from a single power supply over a wide range of voltages. operation from dual supplies also is possible as long as the difference between the two supplies is 2 v to 36 v and vcc is at least 1.5 v more positive than the input common-mode voltage. current drain is independent of the supply voltage. the outputs can be connected to other open-collector outputs to achieve wired-and relationships. the lm139 and lm139a are characterized for operation over the full military temperature range of 55c to 125c. the lm239 and lm239a are characterized for operation from 25c to 125c. view all in datasheet