# LM2903BQPWRQ1

**Texas Instruments** · Comparators · TSSOP-8

LM2903BQPWRQ1 from Texas Instruments, in a TSSOP-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 output pin; open-collector output compatible with TTL/MOS/CMOS, maximum 25 mA sink current. |
| 2 | 1IN- | input | Negative input of comparator 1; supports differential input range ±36V with common-mode range including ground. |
| 3 | 1IN+ | input | Positive input of comparator 1; supports differential input range ±36V with common-mode range including ground. |
| 4 | GND | power_in | Ground reference. |
| 5 | 2IN+ | input | Positive input of comparator 2; supports differential input range ±36V with common-mode range including ground. |
| 6 | 2IN- | input | Negative input of comparator 2; supports differential input range ±36V with common-mode range including ground. |
| 7 | 2OUT | output | Comparator 2 output pin; open-collector output compatible with TTL/MOS/CMOS, maximum 25 mA sink current. |
| 8 | VCC | power_in | Positive supply voltage, operating range 2V to 36V for LM2903B-Q1. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LM2903BQPWRQ1`
- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`
- 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `lm2903bqpwrq1-etched.step` / `lm2903bqpwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2903bqpwrq1.step` / `lm2903bqpwrq1.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/lm2903bqpwrq1-datasheet.pdf)