LM2903AVQDR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	1OUT	output	Comparator 1 open-drain output pin.
2	1IN-	input	Comparator 1 negative (inverting) input pin.
3	1IN+	input	Comparator 1 positive (non-inverting) input pin.
4	GND	power_in	Ground.
5	2IN+	input	Comparator 2 positive (non-inverting) input pin.
6	2IN-	input	Comparator 2 negative (inverting) input pin.
7	2OUT	output	Comparator 2 open-drain output pin.
8	VCC	power_in	Positive supply; recommended supply range for non-B V-suffix devices is 2 V to 32 V.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8
Category	Operational Amplifier/Comparator
Pins	8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Input offset voltage	VIO		1	2	mV	VCC=5V to max, VO=1.4V, VIC=VICR(min), TA=25°C	10
Input offset voltage, full range	VIO			4	mV	VCC=5V to max, VO=1.4V, VIC=VICR(min), full range (-40°C to 125°C)	10
Input offset current	IIO		5	50	nA	VO=1.4V, TA=25°C	10
Input offset current, full range	IIO			200	nA	VO=1.4V, full range	10
Input bias current	IIB		-25	-250	nA	VO=1.4V, TA=25°C	10
Input bias current, full range	IIB			-500	nA	VO=1.4V, full range	10
Large-signal differential voltage amplification	AVD	25	100		V/mV	VCC=15V, VO=1.4V to 11.4V, RL≥15kΩ to VCC, TA=25°C	10
High-level output current	IOH		0.1	50	nA	VOH=5V, VID=1V, TA=25°C	10
High-level output current, full range	IOH			1	µA	VOH=VCC max, VID=1V, full range	10
Low-level output voltage	VOL		150	400	mV	IOL=4mA, VID=-1V, TA=25°C	10
Low-level output voltage, full range	VOL			700	mV	IOL=4mA, VID=-1V, full range	10
Low-level output current	IOL	6			mA	VOL=1.5V, VID=-1V, TA=25°C	10
Supply current	ICC		0.8	1	mA	RL=∞, VCC=5V, TA=25°C	10
Supply current, full range	ICC			2.5	mA	RL=∞, VCC=max, full range	10
Response time, 100mV step			1.3		µs	RL=5.1kΩ to 5V, CL=15pF, 100mV input step, 5mV overdrive, VCC=5V, TA=25°C	10
Response time, TTL step			0.3		µs	RL=5.1kΩ to 5V, CL=15pF, TTL-level input step, VCC=5V, TA=25°C	10
Junction-to-ambient thermal resistance	RθJA		131.8		°C/W	D (SOIC) 8-pin	5
Junction-to-case (top) thermal resistance	RθJC(top)		78.4		°C/W	D (SOIC) 8-pin	5
Junction-to-board thermal resistance	RθJB		72.2		°C/W	D (SOIC) 8-pin	5
Junction-to-top characterization parameter	ψJT		26.5		°C/W	D (SOIC) 8-pin	5
Junction-to-board characterization parameter	ψJB		71.1		°C/W	D (SOIC) 8-pin	5
ESD, human-body model	V(ESD)	-1000		1000	V	HBM, ANSI/ESDA/JEDEC JS-001, all other versions	5
ESD, charged-device model	V(ESD)	-750		750	V	CDM, JEDEC JESD22-C101, all other versions	5

CAD (KiCad official)

Symbol: LM2903AVQDR
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)
3D model files: lm2903avqdr-etched.step / lm2903avqdr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm2903avqdr.step / lm2903avqdr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (55 pp, sha256 bc48a941138a27fe, retrieved 2026-10-30, tier: manufacturer)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

LM2903AVQDR

Verified LM2903AVQDR

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

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