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Texas Instruments LM2903BQDDFRQ1 — Analog & Data Acquisition

LM2903BQDDFRQ1 Automotive Dual Comparator, AEC-Q100

MPNLM2903BQDDFRQ1
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Texas Instruments LM2903BQDDFRQ1, Automotive Grade dual differential comparator, AEC-Q100, 2V to 36V supply, 1µs propagation delay, open-collector rail-to-rail output, -40°C to 125°C, TSOT-23-8 package.

$0.6200Ref. price · indicative, final on quote
PackagingSOT-23-8
RoHSNot applicable
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

LM2903BQDDFRQ1 specifications
ParameterValue
TypeGeneral Purpose
Output typeOpen-Collector, Rail-to-Rail
MountingSurface Mount
Voltage - input offset2.5mV @ 5V
Voltage - supply, single (Dual (±))2V ~ 36V
Output current21mA @ 5V
Current - quiescent600µA
Current - input bias0.025µA @ 5V
Operating temperature-40°C ~ 125°C (TA)
GradeAutomotive
PackageTape & Reel (TR) Cut Tape (CT)
QualificationAEC-Q100
CaseSOT-23-8
Number of elements2
Propagation delay1µs (Typ)

Product details

Automotive dual comparator in a small footprint

It operates from a single or dual supply spanning 2V to 36V, covering 12V and 24V vehicle electrical systems without an intermediate regulator. The open-collector, rail-to-rail output stage allows wired-OR connections and level translation to logic rails down to 2V. Propagation delay is 1µs typical, suited for threshold detection, over-voltage/under-voltage lockout, and window comparators in powertrain, body control, and battery management modules.

Quiescent current is 600µA maximum, keeping the load on the always-on supply low in key-off monitoring circuits.

Input characteristics for sensor interfaces

Maximum input offset voltage is 2.5mV at 5V, and input bias current is 0.025µA maximum at 5V. These figures allow direct connection to high-impedance sensors — thermistors, Hall-effect elements, or current-shunt amplifiers — without a buffer stage. The 21mA typical output sink at 5V drives optocoupler LEDs or logic inputs directly.

Supplied in a TSOT-23-8 package (SOT-23-8 variant), the part occupies minimal board area — useful when adding comparator functions to a dense ECU or sensor module PCB.

Frequently asked questions

What is LM2903BQDDFRQ1's listed type and grade?

The device type is General Purpose comparator, and the grade is Automotive, confirmed by AEC-Q100 qualification.