component
LM2903QD
Public Made by Adomby adom
Texas Instruments Comparators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM2903QD
Texas Instruments · Comparators · SOIC-8
LM2903QD from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1OUT | output | Open-drain output of comparator 1; sinks current to GND when 1IN- exceeds 1IN+ plus input offset voltage; output low voltage 0.13-0.4V at 4mA sink current, maximum sink current 20mA. |
| 2 | 1IN- | input | Inverting input of comparator 1; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum. |
| 3 | 1IN+ | input | Non-inverting input of comparator 1; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum. |
| 4 | GND | power_in | Ground reference; circuit return and common reference potential for all signal measurements; connect to 0V system ground. |
| 5 | 2IN+ | input | Non-inverting input of comparator 2; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum. |
| 6 | 2IN- | input | Inverting input of comparator 2; input common-mode range 0V to (VCC-1.5V) at 25°C or 0V to (VCC-2V) across temperature range -40 to 125°C; input bias current 25-250nA; input offset voltage ±15mV maximum. |
| 7 | 2OUT | output | Open-drain output of comparator 2; sinks current to GND when 2IN- exceeds 2IN+ plus input offset voltage; output low voltage 0.13-0.4V at 4mA sink current, maximum sink current 20mA. |
| 8 | VCC | power_in | Positive power supply input; operating voltage range 2-30V for LM2903 standard version; quiescent supply current 0.8-1mA at 5V to maximum 2.5mA at 30V; bypass to GND with 0.1µF capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
LM2903QD - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
lm2903qd-etched.step/lm2903qd-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2903qd.step/lm2903qd.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (56 pp, sha256
15cea39fa1eb17a7, retrieved 2026-09-23, tier: lcsc) - 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 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).