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Texas Instruments LM2901AVQDRG4 — Analog & Data Acquisition

LM2901AVQDRG4 Quad Differential Comparator, -40°C to 125°C

MPNLM2901AVQDRG4
End of Life

Texas Instruments LM2901AVQDRG4, quad differential comparator, 2V to 32V supply, open-collector/CMOS/TTL output, 20mA output current, -40°C to 125°C, 14-SOIC surface mount.

$0.7000Ref. price · indicative, final on quote
Texas Instruments LM2901AVQDRG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2901AVQDRG4 specifications
ParameterValue
TypeDifferential
Output typeCMOS, MOS, Open-Collector, TTL
MountingSurface Mount
Voltage - input offset2mV @ 32V
Voltage - supply, single (Dual (±))2V ~ 32V, ±1V ~ 16V
Output current20mA
Current - quiescent2.5mA
Current - input bias0.25µA @ 5V
Operating temperature-40°C~125°C
PackageTape & Reel (TR); Cut Tape (CT)
Case14-SOIC (0.154\", 3.90mm Width)
Number of elements4

Product details

The LM2901AVQDRG4: Differential inputs with an open-collector output stage let it interface directly with CMOS, MOS, or TTL logic families, or pull up to a rail higher than the comparator supply. The base product number LM2901 is a widely second-sourced industry standard, and the 'AV' suffix denotes the extended industrial temperature range.

Single-supply operation from 2 V to 32 V (or split supplies ±1 V to ±16 V) means this comparator runs on a 5 V ADC supply or an industrial bus without a secondary regulator.

Maximum input offset voltage of 2 mV at 32 V supply keeps the switching threshold accurate.

Output type flexibility — open-collector wired-OR and level translation

The open-collector output (also listed as CMOS, MOS, and TTL-compatible) lets multiple comparator outputs be tied together in a wired-OR configuration for window comparators or fault-summary flags. The pull-up resistor can connect to a different supply than the comparator itself, enabling 5 V logic to drive a 3.3 V microcontroller input or a 24 V PLC input module without a level shifter.

Frequently asked questions

What is the output type of LM2901AVQDRG4?

The output type is listed as CMOS, MOS, open-collector, and TTL. In practice the output stage is an open-collector NPN transistor that can be pulled up to any voltage within the supply range, making it compatible with all those logic families.

Is LM2901AVQDRG4 compatible with 5V logic?

Yes. The open-collector output can be pulled up to 5 V via a resistor, and the inputs accept signals up to the positive supply rail. The input bias current is a maximum 0.25 µA at 5 V, so the comparator does not load the 5 V logic output.

What is the difference between LM2901AVQDRG4 and LM2901DR?

The primary difference is the temperature grade. Both are quad comparators in 14-SOIC with the same pinout and supply range. For designs that see under-hood or outdoor ambient temperatures above 85°C, the 'AV' suffix variant is the correct choice.