component
TMP431CDGKR
Public Unreviewedby Ray
Texas Instruments Temperature and Humidity Sensor, VSSOP-8-0.65mm. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTMP431CDGKR
Texas Instruments · Temperature and Humidity Sensor · VSSOP-8-0.65mm
TMP431CDGKR from Texas Instruments, in a VSSOP-8-0.65mm. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | V+ | power_in | Positive power supply input, 2.7 V to 5.5 V. Bypass locally with a 0.1 µF ceramic capacitor to GND. |
| 2 | DXP | input | Analog positive connection to the remote temperature-sensing transistor (diode-connected NPN/PNP or CPU substrate diode). Sources the programmable measurement current used for remote junction temperature sensing. |
| 3 | DXN | input | Analog negative connection to the remote temperature-sensing transistor. Return path for the remote-diode sense current; typically tied to the remote transistor base/collector. |
| 4 | THERM | output | Digital thermal flag output, active low, open-drain. Requires an external pullup resistor to V+. Asserts when either local or remote temperature crosses the programmed THERM limit; intended for direct fan/shutdown control. |
| 5 | GND | power_in | Device ground reference (0 V) for supply and analog remote-sensing paths. |
| 6 | ALERT/THERM2 | output | Digital alert output, active low, open-drain; requires an external pullup resistor to V+. Reconfigurable via Configuration Register 1 as a second thermal-flag (THERM2) output. |
| 7 | SDA | bidirectional | Bidirectional SMBus serial data line, open-drain. Requires an external pullup resistor to V+. Compatible with SMBus/I²C bus speeds up to 3.4 MHz. |
| 8 | SCL | input | SMBus serial clock input, open-drain. Requires an external pullup resistor to V+. Slave clock input for SMBus/I²C transactions. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8-0.65mm |
| Category | Sensor |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
TMP431CDGKRTMP431CDGKTTMP431CDGKRDDGKRTMP431CDGKRDDGKTTMP431CDGKRDGS
CAD (KiCad official)
- Symbol:
TMP431CDGKR - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (51 pp, sha256
6d652e679b7db74d, retrieved 2026-08-17, 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:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).