SN74HC139N

{
  "slug": "sn74hc139n",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic Signal Switches, Multiplexers, Decoders, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74hc139n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
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    "sn74hc139n.glb",
    "sn74hc139n.step",
    "sn74hc139n.lbr",
    "docs/hero.png",
    "docs/sn74hc139n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74hc139n-hero.glb",
    "sn74hc139n-hero.overlay.json",
    "sn74hc139n-etched.glb"
  ],
  "component": {
    "mpn": "SN74HC139N",
    "manufacturer": "lingxingic",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603323102453510144",
    "parts": {
      "symbol": "sn74hc139n.kicad_sym",
      "footprint": "sn74hc139n.kicad_mod",
      "model_3d": "sn74hc139n-hero.glb",
      "model_3d_plain": "sn74hc139n-etched.glb",
      "model_3d_step": "sn74hc139n-etched.step",
      "model_3d_step_plain": "sn74hc139n.step",
      "lbr": "sn74hc139n.lbr"
    },
    "distributor_links": {
      "lcsc": "C22436653",
      "digikey": "2156-SN74HC139N-ND",
      "mouser": "595-SN74HC139N"
    },
    "distributor_check": {
      "checked_at": "2026-10-15T00:00:14Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-SN74HC139N-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-SN74HC139N",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1E",
        "type": "input",
        "description": "Active-LOW enable input for decoder 1; when HIGH, all decoder 1 outputs are forced HIGH, and it can serve as the data input for a 1-to-4 demultiplexer."
      },
      {
        "number": "2",
        "name": "1A0",
        "type": "input",
        "description": "Address input 0 for decoder 1, one of two binary-weighted address inputs that select which output goes LOW."
      },
      {
        "number": "3",
        "name": "1A1",
        "type": "input",
        "description": "Address input 1 for decoder 1, one of two binary-weighted address inputs that select which output goes LOW."
      },
      {
        "number": "4",
        "name": "1Y̅0",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 0 of decoder 1."
      },
      {
        "number": "5",
        "name": "1Y̅1",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 1 of decoder 1."
      },
      {
        "number": "6",
        "name": "1Y̅2",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 2 of decoder 1."
      },
      {
        "number": "7",
        "name": "1Y̅3",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 3 of decoder 1."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for the device."
      },
      {
        "number": "9",
        "name": "2Y̅3",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 3 of decoder 2."
      },
      {
        "number": "10",
        "name": "2Y̅2",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 2 of decoder 2."
      },
      {
        "number": "11",
        "name": "2Y̅1",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 1 of decoder 2."
      },
      {
        "number": "12",
        "name": "2Y̅0",
        "type": "output",
        "description": "Active-LOW mutually exclusive output 0 of decoder 2."
      },
      {
        "number": "13",
        "name": "2A1",
        "type": "input",
        "description": "Address input 1 for decoder 2, one of two binary-weighted address inputs that select which output goes LOW."
      },
      {
        "number": "14",
        "name": "2A0",
        "type": "input",
        "description": "Address input 0 for decoder 2, one of two binary-weighted address inputs that select which output goes LOW."
      },
      {
        "number": "15",
        "name": "2E",
        "type": "input",
        "description": "Active-LOW enable input for decoder 2; when HIGH, all decoder 2 outputs are forced HIGH, and it can serve as the data input for a 1-to-4 demultiplexer."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; the datasheet recommends 2.0 V to 6.0 V (typ. 5.0 V) for SN74HC139 and 4.5 V to 5.5 V for SN74HCT139."
      }
    ],
    "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": [
          "extractor flagged: The datasheet's 'Pin Configurations' section (2.2) has no pin diagram in the extracted text. The pin; The ordering table on page 4 lists SN74HC139N (LX) and SN74HCT139N (LX) in the DIP16 package (25 pcs; The extracted text shows the active-LOW overbar as an em dash ('1E—', '1Y—0'). Pin names below use a"
        ],
        "pages_sent": 19,
        "cost_usd": 0.071,
        "at": "2026-10-14T23:59:56"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603323102453510144",
        "pages": 19,
        "sha256": "d0af9f9420765da4",
        "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": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "sn74hc139n-etched.step",
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        "sha256": "c276443ba4ba532001f28a39908b61e71d36aa19c3caf96095ad90eec8297243",
        "checked": "2026-10-15",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  }
}