TMP421AIDCNT

{
  "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"
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  "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"
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  }
}