component
TMP421AIDCNT
Public Made by Adomby adom
Texas Instruments Temperature Sensors, SOT-23-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+44@@ -0,0 +1,44 @@+# TMP421AIDCNT++**Texas Instruments** · Temperature Sensors · SOT-23-8++TMP421AIDCNT from Texas Instruments, in a SOT-23-8. 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 | DXP | passive | Positive connection to remote temperature sensor, accepts diode-connected transistor input for remote temperature measurement range -40°C to +150°C. |+| 2 | DXN | passive | Negative connection to remote temperature sensor, requires less than 5Ω effective series resistance and 100pF differential input capacitance. |+| 3 | A1 | input | Address pin with input logic levels VIH = 0.7(V+) to (V+)+0.5V and VIL = -0.5V to 0.3(V+). |+| 4 | A0 | input | Address pin with input logic levels VIH = 0.7(V+) to (V+)+0.5V and VIL = -0.5V to 0.3(V+). |+| 5 | GND | power_in | Ground connection, reference potential for device. |+| 6 | SDA | bidirectional | Serial data line for SMBus two-wire interface, open-drain output requiring pull-up resistor to V+, input threshold VIH = 2.1V and VIL = 0.8V. |+| 7 | SCL | bidirectional | Serial clock line for SMBus two-wire interface, open-drain output requiring pull-up resistor to V+, input threshold VIH = 2.1V and VIL = 0.8V. |+| 8 | V+ | power_in | Positive supply voltage 2.7V to 5.5V for TMP421 (2.55V to 5.5V for TMP421C), with quiescent current 32-38µA at 0.0625 conversions per second. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23-8 |+| Category | Sensors |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `TMP421AIDCNT`+- Footprint: `Package_TO_SOT_SMD:SOT-23-8`+- 3D model: SOT-23-8 (KiCad packages3D, STEP)+- 3D model files: `tmp421aidcnt-etched.step` / `tmp421aidcnt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tmp421aidcnt.step` / `tmp421aidcnt.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/tmp421) (36 pp, sha256 `a8969604cee2986f`, retrieved 2026-10-05, 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/tmp421aidcnt-datasheet.pdf)
page.jsonadded+160@@ -0,0 +1,160 @@+{+ "slug": "tmp421aidcnt",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Temperature Sensors, SOT-23-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "sensors",+ "tmp421aidcnt",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "tmp421aidcnt.kicad_sym",+ "tmp421aidcnt.kicad_mod",+ "tmp421aidcnt.glb",+ "tmp421aidcnt.step",+ "tmp421aidcnt.lbr",+ "docs/hero.png",+ "docs/tmp421aidcnt-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "tmp421aidcnt-hero.glb",+ "tmp421aidcnt-hero.overlay.json"+ ],+ "component": {+ "mpn": "TMP421AIDCNT",+ "manufacturer": "Texas Instruments",+ "package": "SOT-23-8",+ "pin_count": 8,+ "category": "Sensors",+ "subcategory": "Temperature Sensors",+ "datasheet": "https://www.ti.com/cn/lit/gpn/tmp421",+ "parts": {+ "symbol": "tmp421aidcnt.kicad_sym",+ "footprint": "tmp421aidcnt.kicad_mod",+ "model_3d": "tmp421aidcnt-hero.glb",+ "model_3d_plain": "tmp421aidcnt.glb",+ "model_3d_step": "tmp421aidcnt-etched.step",+ "model_3d_step_plain": "tmp421aidcnt.step",+ "lbr": "tmp421aidcnt.lbr"+ },+ "distributor_links": {+ "lcsc": 201742,+ "digikey": "296-21990-2-ND",+ "mouser": "595-TMP421AIDCNT"+ },+ "distributor_check": {+ "checked_at": "2026-10-05T19:31:04Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-21990-2-ND",+ "status": "found"+ },+ "mouser": {+ "pn": "595-TMP421AIDCNT",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "DXP",+ "type": "passive",+ "description": "Positive connection to remote temperature sensor, accepts diode-connected transistor input for remote temperature measurement range -40°C to +150°C."+ },+ {+ "number": "2",+ "name": "DXN",+ "type": "passive",+ "description": "Negative connection to remote temperature sensor, requires less than 5Ω effective series resistance and 100pF differential input capacitance."+ },+ {+ "number": "3",+ "name": "A1",+ "type": "input",+ "description": "Address pin with input logic levels VIH = 0.7(V+) to (V+)+0.5V and VIL = -0.5V to 0.3(V+)."+ },+ {+ "number": "4",+ "name": "A0",+ "type": "input",+ "description": "Address pin with input logic levels VIH = 0.7(V+) to (V+)+0.5V and VIL = -0.5V to 0.3(V+)."+ },+ {+ "number": "5",+ "name": "GND",+ "type": "power_in",+ "description": "Ground connection, reference potential for device."+ },+ {+ "number": "6",+ "name": "SDA",+ "type": "bidirectional",+ "description": "Serial data line for SMBus two-wire interface, open-drain output requiring pull-up resistor to V+, input threshold VIH = 2.1V and VIL = 0.8V."+ },+ {+ "number": "7",+ "name": "SCL",+ "type": "bidirectional",+ "description": "Serial clock line for SMBus two-wire interface, open-drain output requiring pull-up resistor to V+, input threshold VIH = 2.1V and VIL = 0.8V."+ },+ {+ "number": "8",+ "name": "V+",+ "type": "power_in",+ "description": "Positive supply voltage 2.7V to 5.5V for TMP421 (2.55V to 5.5V for TMP421C), with quiescent current 32-38µA at 0.0625 conversions per second."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: MPN TMP421AIDCNT not found in Package Option Addendum (PAGE 27-28). Active production variants liste"+ ],+ "pages_sent": 12,+ "cost_usd": 0.105,+ "at": "2026-10-05T19:30:51"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/tmp421",+ "pages": 36,+ "sha256": "a8969604cee2986f",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 8,+ "described": 8,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}