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Texas Instruments LM2903MX-TI — Analog & Data Acquisition

LM2903MX-TI Dual Comparator, 2V-36V Supply

MPNLM2903MX-TI
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Texas Instruments LM2903MX-TI, dual general-purpose comparator, 2V to 36V single/±1V to ±18V dual supply, open-collector output, 8-SOIC surface-mount package.

$1.0000Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2903MX-TI specifications
ParameterValue
TypeGeneral Purpose
Output typeOpen-Collector, CMOS, DTL, ECL, MOS, TTL
MountingSurface Mount
Voltage - input offset7mV @ 30V
Voltage - supply, single (Dual (±))2V ~ 36V, ±1V ~ 18V
Output current16mA @ 5V
Current - quiescent1mA
Current - input bias0.25µA @ 5V
PackageBulk
Case8-SOIC (0.154\", 3.90mm Width)
Number of elements2

Product details

Dual comparator with a wide supply net

Its supply range of 2V to 36V on a single rail, or ±1V to ±18V split supplies, lets it sit on unregulated industrial buses or battery stacks without a local regulator. The open-collector output stage sinks up to 16 mA at 5V and interfaces directly with CMOS, TTL, DTL, ECL, or MOS logic — no level shifter needed between the comparator and the digital input.

Maximum input offset voltage is 7 mV at 30V supply. For a 5V threshold with a 100 mV hysteresis band, that 7 mV offset contributes about 7% uncertainty — acceptable for overvoltage/undervoltage detection but worth derating if you are sensing a 50 mV current-shunt drop. Maximum input bias current is 0.25 µA at 5V. In a high-impedance divider (say 1 MΩ total), that bias drops 0.25 V across the resistor — enough to shift the trip point. Keep the divider impedance below 100 kΩ to keep the bias error under 25 mV.

Quiescent draw and production status

Maximum quiescent current for both comparators is 1 mA. In a 24 V always-on industrial sensor, that is 24 mW — negligible for a bulk supply but a line item in a loop-powered 4-20 mA transmitter where the total budget is 3.5 mA.

Frequently asked questions

Is LM2903MX-TI equivalent to the LM393?

The LM2903MX-TI is a functional equivalent to the industry-standard LM393 dual comparator — same pinout, same open-collector outputs, same 8-SOIC footprint. Check the temperature grade on your BOM before substituting.

What is the output type of LM2903MX-TI?

The output is open-collector, which can be pulled up to any voltage within the supply range and interfaces with CMOS, TTL, DTL, ECL, MOS, or TTL logic families.