Four comparators in one SOIC-14 — what the wide supply range buys you
The Texas Instruments LM339AMX/NOPB packs four independent general-purpose comparators into a single 14-SOIC package. Each comparator can swing its open-collector output to match CMOS, TTL, MOS, ECL, or DTL logic families — the output pull-up voltage is independent of the comparator supply, so level translation between a 5 V sensor and a 3.3 V controller is one resistor away.
Supply rails and temperature — where this part lives comfortably
Single-supply operation from 2 V to 36 V, or split supplies from ±1 V to ±18 V, covers most industrial and consumer rails without a secondary regulator.