LM393M Texas Instruments, Dual Comparator, CMOS/TTL O/P, O/P, 1.3μs 2 → 36 V 8-Pin SOIC

The Texas Instrument comparators consists of two independent precision voltage comparators. With an offset voltage specification as low as 2.0 mV max for two comparators. This comparators were designed specifically to operate from a single power supply over a wide range of voltages.

Eliminates need for dual supplies
Allows sensing near ground
Compatible with all forms of logic
Power drain suitable for battery operation