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LM2903DRE4

LM2903DRE4 Differential Comparator, -40°C to 125°C, 8-SOIC

MPNLM2903DRE4
End of Life

Texas Instruments LM2903DRE4 dual differential comparator, 2V to 36V supply, open-drain/CMOS/TTL output, 8-SOIC surface mount, -40°C to 125°C operating temperature.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2903DRE4 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)
Case8-SOIC (0.154\", 3.90mm Width)
Number of elements2

Product details

Output types and drive — open-drain means wired-OR and level shifting

The output stage supports CMOS, MOS, open-drain, and TTL logic levels, so the same comparator can drive a microcontroller GPIO, a relay coil through a pull-up, or a 5V TTL input. Open-drain output lets you wire-OR multiple comparator outputs on a single pull-up resistor for fault summing or window detection.

Input offset and bias — what to expect in a production comparator

Maximum input offset voltage is 7 mV at 30 V supply — typical parts are tighter, but the 7 mV ceiling is the spec you design threshold hysteresis around. Maximum input bias current is 0.25 µA at 5 V, which matters when your resistor divider string is in the megaohm range; a 10 MΩ source sees a 2.5 V error from bias alone. Quiescent current maxes at 2.5 mA per device, so two comparators in the 8-pin package draw under 5 mA total — fine for a 24 V powered module, worth watching in a battery-sensing circuit.

Package and footprint — 8-SOIC, tape and reel

No moisture sensitivity level is stated in the listing, but standard SOIC-8 typically requires baking only if the reel has been exposed to high humidity for extended periods.

Frequently asked questions

What is the output type for LM2903DRE4?

The output supports CMOS, MOS, open-drain, and TTL logic levels. Open-drain allows wired-OR connections and level shifting to different supply voltages.

Can LM2903DRE4 replace LM393 or LM2903?

The LM2903DRE4 is a Texas Instruments variant of the industry-standard LM2903 dual comparator. Check your system's temperature requirements before swapping.