74AHC139PW

{
  "slug": "74ahc139pw",
  "version": "0.1.0",
  "type": "component",
  "description": "Nexperia Signal Switches, Multiplexers, Decoders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74ahc139pw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74ahc139pw.kicad_sym",
    "74ahc139pw.kicad_mod",
    "74ahc139pw.glb",
    "74ahc139pw.step",
    "74ahc139pw.lbr",
    "docs/hero.png",
    "docs/74ahc139pw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74ahc139pw-hero.glb",
    "74ahc139pw-hero.overlay.json",
    "74ahc139pw-etched.glb"
  ],
  "component": {
    "mpn": "74AHC139PW",
    "manufacturer": "Nexperia",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908670482042880",
    "parts": {
      "symbol": "74ahc139pw.kicad_sym",
      "footprint": "74ahc139pw.kicad_mod",
      "model_3d": "74ahc139pw-hero.glb",
      "model_3d_plain": "74ahc139pw-etched.glb",
      "model_3d_step": "74ahc139pw-etched.step",
      "model_3d_step_plain": "74ahc139pw.step",
      "lbr": "74ahc139pw.lbr"
    },
    "distributor_links": {
      "lcsc": "C554247",
      "mouser": "771-74AHC139PW"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T02:00:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": "771-74AHC139PW",
        "status": "found",
        "lifecycle": "End of Life"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1E",
        "type": "input",
        "description": "Active-LOW enable input for decoder 1; when it is HIGH, all decoder 1 outputs (1Y0 to 1Y3) are forced HIGH."
      },
      {
        "number": "2",
        "name": "1A0",
        "type": "input",
        "description": "Binary-weighted address input for decoder 1, used with 1A1 to select one of outputs 1Y0 to 1Y3."
      },
      {
        "number": "3",
        "name": "1A1",
        "type": "input",
        "description": "Binary-weighted address input for decoder 1, used with 1A0 to select one of outputs 1Y0 to 1Y3."
      },
      {
        "number": "4",
        "name": "1Y0",
        "type": "output",
        "description": "Mutually exclusive decoder 1 output, driven LOW when selected with 1E LOW and the matching address code."
      },
      {
        "number": "5",
        "name": "1Y1",
        "type": "output",
        "description": "Mutually exclusive decoder 1 output, driven LOW when selected with 1E LOW and the matching address code."
      },
      {
        "number": "6",
        "name": "1Y2",
        "type": "output",
        "description": "Mutually exclusive decoder 1 output, driven LOW when selected with 1E LOW and the matching address code."
      },
      {
        "number": "7",
        "name": "1Y3",
        "type": "output",
        "description": "Mutually exclusive decoder 1 output, driven LOW when selected with 1E LOW and the matching address code."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin (0 V) for the device."
      },
      {
        "number": "9",
        "name": "2Y3",
        "type": "output",
        "description": "Mutually exclusive decoder 2 output, driven LOW when selected with 2E LOW and the matching address code."
      },
      {
        "number": "10",
        "name": "2Y2",
        "type": "output",
        "description": "Mutually exclusive decoder 2 output, driven LOW when selected with 2E LOW and the matching address code."
      },
      {
        "number": "11",
        "name": "2Y1",
        "type": "output",
        "description": "Mutually exclusive decoder 2 output, driven LOW when selected with 2E LOW and the matching address code."
      },
      {
        "number": "12",
        "name": "2Y0",
        "type": "output",
        "description": "Mutually exclusive decoder 2 output, driven LOW when selected with 2E LOW and the matching address code."
      },
      {
        "number": "13",
        "name": "2A1",
        "type": "input",
        "description": "Binary-weighted address input for decoder 2, used with 2A0 to select one of outputs 2Y0 to 2Y3."
      },
      {
        "number": "14",
        "name": "2A0",
        "type": "input",
        "description": "Binary-weighted address input for decoder 2, used with 2A1 to select one of outputs 2Y0 to 2Y3."
      },
      {
        "number": "15",
        "name": "2E",
        "type": "input",
        "description": "Active-LOW enable input for decoder 2; when it is HIGH, all decoder 2 outputs (2Y0 to 2Y3) are forced HIGH."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage pin for the device, referenced to GND."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 14,
        "cost_usd": 0.0633,
        "at": "2026-10-19T01:59:54"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588908670482042880",
        "pages": 14,
        "sha256": "fc7e24dfc738e83f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "74ahc139pw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5.0,
          1.1
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74ahc139pw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": -0.0,
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        "sha256": "484c006de84de7ccae5817894f64e7fe3870a88411bc158c8dbf612b3dd0cde4",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}