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Texas Instruments LP339M — Analog & Data Acquisition

LP339M Quad Comparator, General Purpose, 14-SOIC, Active

MPNLP339M
End of Life

Texas Instruments LP339M, General Purpose quad comparator, 14-SOIC surface mount, 2V to 36V supply, 100µA max quiescent current, 0°C to 70°C operating temperature.

$0.97Ref. price · indicative, final on quote
Packaging14-SOIC (0.154", 3.90mm Width)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LP339M specifications
ParameterValue
TypeGeneral Purpose
Output typeCMOS, MOS, Open-Collector
MountingSurface Mount
Voltage - input offset5mV @ 5V
Voltage - supply, single (Dual (±))2V ~ 36V, ±1V ~ 18V
Output current10mA
Current - quiescent100µA
Current - input bias0.025µA @ 5V
Operating temperature0°C ~ 70°C
PackageBulk
Case14-SOIC (0.154\", 3.90mm Width)
Number of elements4

Product details

Quad comparator for low-power signal conditioning

It operates from a single supply of 2V to 36V or dual supplies of ±1V to ±18V, drawing a maximum quiescent current of 100µA across all four comparators. The open-collector, CMOS, and MOS output types allow wired-OR configurations and interface to logic families at different voltage levels. Typical applications include threshold detection, zero-crossing detectors, window comparators, and battery monitoring in commercial temperature environments (0°C to 70°C).

The 2V to 36V single-supply range covers common industrial rails (5V, 12V, 24V) without needing a separate regulator. The 100µA max quiescent current for all four comparators makes this part a strong candidate for loop-powered or battery-backed circuits where every microamp counts. Input offset voltage is 5mV max at 5V, and input bias current is 0.025µA max at 5V — both adequate for general-purpose level sensing where precision below a few millivolts is not required.

Frequently asked questions

What is the LP339M quad comparator?

The LP339M is a quad general-purpose comparator from Texas Instruments. It contains four independent voltage comparators in a 14-SOIC package, designed for low-power operation with a maximum quiescent current of 100µA.