# LM2903AVQDR

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

LM2903AVQDR 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 | Comparator 1 open-drain output pin. |
| 2 | 1IN- | input | Comparator 1 negative (inverting) input pin. |
| 3 | 1IN+ | input | Comparator 1 positive (non-inverting) input pin. |
| 4 | GND | power_in | Ground. |
| 5 | 2IN+ | input | Comparator 2 positive (non-inverting) input pin. |
| 6 | 2IN- | input | Comparator 2 negative (inverting) input pin. |
| 7 | 2OUT | output | Comparator 2 open-drain output pin. |
| 8 | VCC | power_in | Positive supply; recommended supply range for non-B V-suffix devices is 2 V to 32 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Operational Amplifier/Comparator |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input offset voltage | VIO |  | 1 | 2 | mV | VCC=5V to max, VO=1.4V, VIC=VICR(min), TA=25°C | 10 |
| Input offset voltage, full range | VIO |  |  | 4 | mV | VCC=5V to max, VO=1.4V, VIC=VICR(min), full range (-40°C to 125°C) | 10 |
| Input offset current | IIO |  | 5 | 50 | nA | VO=1.4V, TA=25°C | 10 |
| Input offset current, full range | IIO |  |  | 200 | nA | VO=1.4V, full range | 10 |
| Input bias current | IIB |  | -25 | -250 | nA | VO=1.4V, TA=25°C | 10 |
| Input bias current, full range | IIB |  |  | -500 | nA | VO=1.4V, full range | 10 |
| Large-signal differential voltage amplification | AVD | 25 | 100 |  | V/mV | VCC=15V, VO=1.4V to 11.4V, RL≥15kΩ to VCC, TA=25°C | 10 |
| High-level output current | IOH |  | 0.1 | 50 | nA | VOH=5V, VID=1V, TA=25°C | 10 |
| High-level output current, full range | IOH |  |  | 1 | µA | VOH=VCC max, VID=1V, full range | 10 |
| Low-level output voltage | VOL |  | 150 | 400 | mV | IOL=4mA, VID=-1V, TA=25°C | 10 |
| Low-level output voltage, full range | VOL |  |  | 700 | mV | IOL=4mA, VID=-1V, full range | 10 |
| Low-level output current | IOL | 6 |  |  | mA | VOL=1.5V, VID=-1V, TA=25°C | 10 |
| Supply current | ICC |  | 0.8 | 1 | mA | RL=∞, VCC=5V, TA=25°C | 10 |
| Supply current, full range | ICC |  |  | 2.5 | mA | RL=∞, VCC=max, full range | 10 |
| Response time, 100mV step |  |  | 1.3 |  | µs | RL=5.1kΩ to 5V, CL=15pF, 100mV input step, 5mV overdrive, VCC=5V, TA=25°C | 10 |
| Response time, TTL step |  |  | 0.3 |  | µs | RL=5.1kΩ to 5V, CL=15pF, TTL-level input step, VCC=5V, TA=25°C | 10 |
| Junction-to-ambient thermal resistance | RθJA |  | 131.8 |  | °C/W | D (SOIC) 8-pin | 5 |
| Junction-to-case (top) thermal resistance | RθJC(top) |  | 78.4 |  | °C/W | D (SOIC) 8-pin | 5 |
| Junction-to-board thermal resistance | RθJB |  | 72.2 |  | °C/W | D (SOIC) 8-pin | 5 |
| Junction-to-top characterization parameter | ψJT |  | 26.5 |  | °C/W | D (SOIC) 8-pin | 5 |
| Junction-to-board characterization parameter | ψJB |  | 71.1 |  | °C/W | D (SOIC) 8-pin | 5 |
| ESD, human-body model | V(ESD) | -1000 |  | 1000 | V | HBM, ANSI/ESDA/JEDEC JS-001, all other versions | 5 |
| ESD, charged-device model | V(ESD) | -750 |  | 750 | V | CDM, JEDEC JESD22-C101, all other versions | 5 |

## CAD (KiCad official)

- Symbol: `LM2903AVQDR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `lm2903avqdr-etched.step` / `lm2903avqdr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2903avqdr.step` / `lm2903avqdr.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/lit/ds/symlink/lm2903avq.pdf) (55 pp, sha256 `bc48a941138a27fe`, retrieved 2026-10-30, tier: manufacturer)
- **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-sonnet-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/lm2903avqdr-datasheet.pdf)