# LM2903HYDT

**STMicroelectronics** · Comparators · SO-8

LM2903HYDT from STMicroelectronics, in a SO-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 | Output 1 | output | Output 1 of dual comparator with low saturation voltage of 250 mV typ. at 4 mA sink current and TTL/CMOS compatibility. |
| 2 | Inverting input 1 | input | Inverting input of comparator 1 with input offset current 5 nA typ., input bias current 25 nA typ., and common-mode range 0 to (VCC+) - 1.5 V. |
| 3 | Non-inverting input 1 | input | Non-inverting input of comparator 1 with input offset current 5 nA typ., input bias current 25 nA typ., and common-mode range 0 to (VCC+) - 1.5 V. |
| 4 | VCC- | power_in | Negative supply voltage, ground in single supply mode or negative supply in dual supply mode. |
| 5 | Non-inverting input 2 | input | Non-inverting input of comparator 2 with input offset current 5 nA typ., input bias current 25 nA typ., and common-mode range 0 to (VCC+) - 1.5 V. |
| 6 | Inverting input 2 | input | Inverting input of comparator 2 with input offset current 5 nA typ., input bias current 25 nA typ., and common-mode range 0 to (VCC+) - 1.5 V. |
| 7 | Output 2 | output | Output 2 of dual comparator with low saturation voltage of 250 mV typ. at 4 mA sink current and TTL/CMOS compatibility. |
| 8 | VCC+ | power_in | Positive supply voltage with range 2 V to 36 V for single supply or ±1 V to ±18 V for dual supply. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SO-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `LM2903HYDT`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files: `lm2903hydt-etched.step` / `lm2903hydt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2903hydt.step` / `lm2903hydt.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590224267276017664) (12 pp, sha256 `0b09ac160bc2c18e`, retrieved 2026-10-01, tier: lcsc)
- **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/lm2903hydt-datasheet.pdf)