# LM2903BRQPWRQ1

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

LM2903BRQPWRQ1 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 | Output pin of comparator 1; the outputs can be connected to other open-collector outputs. |
| 2 | 1IN- | input | Negative (inverting) input pin of comparator 1. |
| 3 | 1IN+ | input | Positive (non-inverting) input pin of comparator 1; the common-mode input voltage range includes ground. |
| 4 | GND | power_in | Ground reference pin for the device; all voltages are referenced to GND. |
| 5 | 2IN+ | input | Positive (non-inverting) input pin of comparator 2; the common-mode input voltage range includes ground. |
| 6 | 2IN- | input | Negative (inverting) input pin of comparator 2. |
| 7 | 2OUT | output | Output pin of comparator 2; the outputs can be connected to other open-collector outputs. |
| 8 | VCC | power_in | Positive supply; for B devices the supply voltage is 2 V to 36 V, and for dual supplies VCC must be at least 1.5 V more positive than the input common-mode voltage. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `LM2903BRQPWRQ1`
- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`
- 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `lm2903brqpwrq1-etched.step` / `lm2903brqpwrq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2903brqpwrq1.step` / `lm2903brqpwrq1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8601136988647890944) (44 pp, sha256 `69076f90eb22c00c`, retrieved 2026-10-11, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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](docs/lm2903brqpwrq1-datasheet.pdf)