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LM2903VQDRG4Q1

LM2903VQDRG4Q1 Dual Differential Comparator, AEC-Q100

MPNLM2903VQDRG4Q1
Active

Texas Instruments LM2903VQDRG4Q1, dual differential comparator, automotive AEC-Q100, 2V to 36V supply, open-collector/CMOS/TTL output, 8-SOIC, -40°C to 125°C.

$0.6000Ref. price · indicative, final on quote
Texas Instruments LM2903VQDRG4Q1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

LM2903VQDRG4Q1 specifications
ParameterValue
TypeDifferential
SeriesAutomotive, AEC-Q100
Output typeCMOS, MOS, Open-Collector, TTL
MountingSurface Mount
Voltage - input offset7mV @ 5V
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 automotive and industrial threshold sensing

It compares two analog input voltages and drives a digital output high or low based on the difference.

The 20mA typical output current drives an optocoupler LED or a small relay coil directly. Maximum input offset voltage is 7mV at 5V — this sets the comparator's switching threshold accuracy. For a 12V battery monitoring circuit, 7mV represents about 0.06% of the rail, well within typical hysteresis margins. The 0.25µA maximum input bias current at 5V keeps the error from source impedance low; a 10kΩ source adds only 2.5mV of additional offset. Quiescent current maxes at 2.5mA per device — for a dual comparator this is 1.25mA per channel. In a battery-powered ECU or sensor module, this quiescent draw is a design constraint to budget against the sleep-mode current target.

Active production — no lifecycle risk for new designs

The base product number LM2903 is a long-running TI comparator family with broad second-source availability across manufacturers, which reduces single-source risk for production BOMs.

Frequently asked questions

Is LM2903VQDRG4Q1 a dual comparator?

Yes, it contains two independent differential comparator channels in one 8-SOIC package. Each channel has its own non-inverting and inverting inputs and a common output stage.

What is the output type of LM2903VQDRG4Q1?

The output supports CMOS, MOS, open-collector, and TTL logic levels. The open-collector output is typically used for wired-OR connections or level-shifting to a lower-voltage logic input.

What is the replacement or equivalent for LM2903VQDRG4Q1?

No direct replacement or equivalent is listed in the product record. The LM2903 base number is a widely second-sourced comparator family — devices from other manufacturers with the same LM2903 base and matching package/temperature suffix are typically pin-compatible, but verify the specific ordering code against your BOM requirements.