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STMicroelectronics LM2901Q4T — Analog & Data Acquisition

STMicroelectronics LM2901Q4T General Purpose Quad Comparator

MPNLM2901Q4T
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STMicroelectronics LM2901Q4T, General Purpose quad comparator, 2V to 36V supply, open-collector output, 2.5mA quiescent max, 16-VFQFN Exposed Pad package, 16-QFN (3x3mm).

$0.5000Ref. price · indicative, final on quote
STMicroelectronics LM2901Q4T datasheet (PDF)
Packaging16-VFQFN Exposed Pad
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM2901Q4T specifications
ParameterValue
TypeGeneral Purpose
Output typeCMOS, DTL, MOS, Open-Collector, TTL
MountingSurface Mount
Voltage - supply, single (Dual (±))2V ~ 36V, ±1V ~ 18V
Current - quiescent2.5mA
PackageTape & Reel (TR) Cut Tape (CT)
Case16-VFQFN Exposed Pad
Number of elements4

Product details

The STMicroelectronics LM2901Q4T is a quad general-purpose comparator in a 16-QFN package. Each channel compares two analog inputs and delivers an open-collector output compatible with CMOS, DTL, MOS, or TTL logic families.

Supply voltage and output type — the BOM-fit decisions

The open-collector output allows the pull-up voltage to differ from the comparator supply.

Package and mounting — footprint for space-constrained layouts

The 16-QFN (3x3 mm) with exposed pad is a surface-mount package for automated assembly.

Frequently asked questions

What is the output type of the LM2901Q4T?

An external pull-up resistor is required to set the output high level.

What is the closest functional second-source for the LM2901Q4T?

The TS393CDT is a dual comparator, not a quad, so it is not a direct pin-compatible replacement. The LM2901Q4T is a quad comparator in a 16-QFN package; for a quad open-drain comparator, look at the LM2901 family in other packages or the TS374 series from STMicroelectronics.