component
tmp422aidcnr
Public Unreviewedby Ray
Texas Instruments Temperature and Humidity Sensor, SOT-23-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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markdownTMP422AIDCNR
Texas Instruments · Temperature and Humidity Sensor · SOT-23-8
TMP422AIDCNR from Texas Instruments, in a SOT-23-8. 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 | DX1 | passive | Channel 1 remote temperature sensor connection (positive side of the remote diode-connected transistor for channel 1). Also participates in setting the TMP422 SMBus address at power-up (see Table 10 of the datasheet). |
| 2 | DX2 | passive | Channel 1 remote temperature sensor connection (negative side of the remote diode-connected transistor for channel 1). Also participates in setting the TMP422 SMBus address at power-up (see Table 10 of the datasheet). |
| 3 | DX3 | passive | Channel 2 remote temperature sensor connection (positive side of the remote diode-connected transistor for channel 2). Also participates in setting the TMP422 SMBus address at power-up (see Table 10 of the datasheet). |
| 4 | DX4 | passive | Channel 2 remote temperature sensor connection (negative side of the remote diode-connected transistor for channel 2). Also participates in setting the TMP422 SMBus address at power-up (see Table 10 of the datasheet). |
| 5 | GND | power_in | Device ground reference. |
| 6 | SDA | bidirectional | SMBus/I²C serial data line, open-drain. Requires an external pull-up resistor to V+. Supports SMBus data rates up to 3.4 MHz; VIH ≥ 2.1 V, VIL ≤ 0.8 V, VOL ≤ 0.4 V at 6 mA sink. |
| 7 | SCL | input | SMBus/I²C serial clock line, open-drain input. Requires an external pull-up resistor to V+. Supports clock frequencies up to 3.4 MHz. |
| 8 | V+ | power_in | Positive supply voltage input, 2.7 V to 5.5 V. Quiescent current ≈ 32 µA at 0.0625 conv/s; UVLO ≈ 2.4 V typ. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-8 |
| Category | Sensor |
| Pins | 8 |
Ordering variants
TMP422AIDCNRTMP422AIDCNRIDCNT
CAD (KiCad official)
- Symbol:
TMP422AIDCNR - Footprint:
Package_TO_SOT_SMD:SOT-23-8 - 3D model: SOT-23-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (None pp, sha256
b1463c54f57b513f, retrieved 2026-08-17, tier: lcsc) - 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).