Quad comparator for general-purpose threshold detection
The Texas Instruments LMV339IDR is a quad low-voltage comparator packing four independent open-collector comparators into a single 14-SOIC package. It operates from a single 2.7V to 5.5V supply, eliminating the need for a dual rail in most designs. With a 600ns propagation delay, it handles typical control-loop and threshold-detection tasks — think over-voltage/under-voltage lockout, window comparators, or zero-crossing detection in motor drives and power supplies. The open-collector outputs let you wire-OR multiple stages or drive loads up to 84mA at 5V.
Industrial temperature range and low quiescent current
Input offset voltage is 7mV max, which sets the detection accuracy floor: a 100mV reference with 7mV offset is 7% error, acceptable for non-precision trip points.
14-SOIC footprint and surface-mount assembly
The 14-SOIC (0.154" width, 3.90mm body) is a workhorse package with 1.27mm pin pitch — easy to route on a two-layer board and rework with standard soldering tools. The supplier device package is 14-SOIC, same as the case code.
It is ROHS3 compliant, so it meets the EU RoHS directive without exemption claims.