# TMP431DDGKT

**Texas Instruments** · Temperature Sensors · VSSOP-8-0.65mm

TMP431DDGKT from Texas Instruments, in a VSSOP-8-0.65mm. 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 | V+ | power_in | Power supply, positive (2.7 V to 5.5 V) |
| 2 | DXP | input | Analog positive connection to remote temperature sensor |
| 3 | DXN | input | Analog negative connection to remote temperature sensor |
| 4 | THERM | output | Digital thermal flag, active low, open-drain; requires pullup resistor to V+ |
| 5 | GND | power_in | Ground |
| 6 | ALERT/THERM2 | output | Digital alert (reconfigurable as second thermal flag), active low, open-drain; requires pullup resistor to V+ |
| 7 | SDA | bidirectional | Bidirectional digital serial data line for SMBus, open-drain; requires pullup resistor to V+ |
| 8 | SCL | input | Digital serial clock line for SMBus, open-drain; requires pullup resistor to V+ |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.65mm |
| Category | Sensors |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TMP431DDGKT`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
- 3D model files: `tmp431ddgkt-etched.step` / `tmp431ddgkt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmp431ddgkt.step` / `tmp431ddgkt.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/tmp431) (50 pp, sha256 `78d1a87f0972ed9f`, retrieved 2026-10-03, 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/tmp431ddgkt-datasheet.pdf)