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LM2903DRG3

LM2903DRG3 Dual Differential Comparator, -40°C to 125°C

MPNLM2903DRG3
Active

Texas Instruments LM2903DRG3 dual differential comparator, 2 elements, open-drain/CMOS/TTL output, 2V to 36V supply, -40°C to 125°C, 8-SOIC package.

$0.5200Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2903DRG3 specifications
ParameterValue
TypeDifferential
Output typeCMOS, MOS, Open-Drain, TTL
MountingSurface Mount
Voltage - input offset7mV @ 30V
Voltage - supply, single (Dual (±))2V ~ 36V, ±1V ~ 18V
Output current20mA
Current - quiescent2.5mA
Current - input bias0.25µA @ 5V
Operating temperature-40°C~125°C
PackageTape & Reel (TR); Cut Tape (CT)
Case8-SOIC (0.154\", 3.90mm Width)
Number of elements2

Product details

Dual differential comparator for industrial and automotive signal chains

It compares two analog voltages and outputs a logic-level signal (open-drain, CMOS, MOS, or TTL compatible). The wide supply range from 2V to 36V (or ±1V to ±18V dual supplies) lets it interface directly with 3.3V, 5V, 12V, or 24V rails without a separate level shifter.

The 125°C ceiling covers under-hood automotive and industrial oven-adjacent placements that a 85°C commercial-grade comparator cannot handle. The 2.5mA max quiescent current per device keeps the thermal budget manageable in a sealed enclosure.

Output drive and input offset — fit for threshold detection

The 7mV max input offset at 30V supply sets the comparator's switching threshold accuracy — adequate for over-voltage/under-voltage detection, zero-crossing detectors, and window comparators where sub-millivolt precision is not required. The 0.25µA max input bias current at 5V minimises voltage drop across high-impedance source resistors.

Frequently asked questions

Can LM2903DRG3 replace LM393 in a design?

The LM2903DRG3 is a functional equivalent to the LM393 in most applications — both are dual differential comparators with open-drain outputs and similar pinouts. For designs that already use the LM393 and need wider temperature margin, the LM2903DRG3 is a drop-in replacement. Verify the output drive and offset specs against your threshold requirements before committing.