# TMP411ADR

**Texas Instruments** · Temperature Sensors · SOIC-8

TMP411ADR 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 | V+ | power_in | Positive supply: 2.7 V to 5.5 V for TMP411 (1.62 V to 5.5 V for TMP411D), with 0.1 µF bypass recommended between V+ and GND placed as close to the device as possible. |
| 2 | D+ | passive | Positive connection to the remote temperature sensor (diode-connected or transistor-connected); if the remote channel is unused, D+ must be tied to D-. |
| 3 | D- | passive | Negative connection to the remote temperature sensor; differential input capacitance between D+ and D- should be 1000 pF or less for best accuracy. |
| 4 | THERM | output | Thermal flag output, active low, open-drain, requires a pullup resistor to V+; it cannot be disabled in software. |
| 5 | GND | power_in | Ground reference for the device. |
| 6 | ALERT/THERM2 | output | Alert output (reconfigurable as a second thermal flag, THERM2), active low, open-drain, requires a pullup resistor to V+. |
| 7 | SDA | bidirectional | SMBus/two-wire serial data line, open-drain, requires a pullup resistor to V+. |
| 8 | SCL | input | SMBus/two-wire serial clock line, open-drain, requires a pullup resistor to V+; supports up to 3.4 MHz in high-speed mode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-8 |
| Category | Sensors |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TMP411ADR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `tmp411adr-etched.step` / `tmp411adr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmp411adr.step` / `tmp411adr.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/tmp411) (63 pp, sha256 `67ad9af43762d7cb`, retrieved 2026-10-08, 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-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/tmp411adr-datasheet.pdf)