# LM2903BQDGKRQ1

**Texas Instruments** · Comparators · VSSOP-8

LM2903BQDGKRQ1 from Texas Instruments, in a VSSOP-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 of comparator 1; open-drain NPN output capable of sinking up to 25mA. |
| 2 | 1IN- | input | Inverting input of comparator 1; accepts input voltage from -0.1V to (VCC-2V). |
| 3 | 1IN+ | input | Non-inverting input of comparator 1; accepts input voltage from -0.1V to (VCC-2V). |
| 4 | GND | power_in | Ground; common reference for power supply and signal return. |
| 5 | 2IN+ | input | Non-inverting input of comparator 2; accepts input voltage from -0.1V to (VCC-2V). |
| 6 | 2IN- | input | Inverting input of comparator 2; accepts input voltage from -0.1V to (VCC-2V). |
| 7 | 2OUT | output | Output of comparator 2; open-drain NPN output capable of sinking up to 25mA. |
| 8 | VCC | power_in | Positive supply voltage; operating range 2V to 36V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LM2903BQDGKRQ1`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `lm2903bqdgkrq1-etched.step` / `lm2903bqdgkrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2903bqdgkrq1.step` / `lm2903bqdgkrq1.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 2026-09-24, 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`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/lm2903bqdgkrq1-datasheet.pdf)