# LM2903VQDRQ1

**Texas Instruments** · Comparators · SOIC-8

LM2903VQDRQ1 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 | Output pin of comparator 1 with maximum sink current of 20mA |
| 2 | 1IN- | input | Negative input pin of comparator 1 with input voltage range -0.3V to 36V |
| 3 | 1IN+ | input | Positive input pin of comparator 1 with input voltage range -0.3V to 36V |
| 4 | GND | power_in | Ground reference pin |
| 5 | 2IN+ | input | Positive input pin of comparator 2 with input voltage range -0.3V to 36V |
| 6 | 2IN- | input | Negative input pin of comparator 2 with input voltage range -0.3V to 36V |
| 7 | 2OUT | output | Output pin of comparator 2 with maximum sink current of 20mA |
| 8 | VCC | power_in | Positive supply voltage pin with recommended operating range 2V to 36V |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `LM2903VQDRQ1`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `lm2903vqdrq1-etched.step` / `lm2903vqdrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2903vqdrq1.step` / `lm2903vqdrq1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm2903-q1) (47 pp, sha256 `765b5f97d419335c`, retrieved 2026-10-07, 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 0.3`, primary `claude-haiku-4-5-20251001` (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](docs/lm2903vqdrq1-datasheet.pdf)