SN74AHC139DR

{
  "slug": "sn74ahc139dr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Signal Switches, Multiplexers, Decoders, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "sn74ahc139dr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sn74ahc139dr.kicad_sym",
    "sn74ahc139dr.kicad_mod",
    "sn74ahc139dr.glb",
    "sn74ahc139dr.step",
    "sn74ahc139dr.lbr",
    "docs/hero.png",
    "docs/sn74ahc139dr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "sn74ahc139dr-hero.glb",
    "sn74ahc139dr-hero.overlay.json",
    "sn74ahc139dr-etched.glb"
  ],
  "component": {
    "mpn": "SN74AHC139DR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://www.ti.com/lit/ds/symlink/sn74ahc139.pdf",
    "parts": {
      "symbol": "sn74ahc139dr.kicad_sym",
      "footprint": "sn74ahc139dr.kicad_mod",
      "model_3d": "sn74ahc139dr-hero.glb",
      "model_3d_plain": "sn74ahc139dr-etched.glb",
      "model_3d_step": "sn74ahc139dr-etched.step",
      "model_3d_step_plain": "sn74ahc139dr.step",
      "lbr": "sn74ahc139dr.lbr"
    },
    "distributor_links": {
      "lcsc": "C6941",
      "digikey": "296-38218-2-ND",
      "mouser": "595-SN74AHC139DR"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T22:06:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-38218-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-SN74AHC139DR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "1G",
        "type": "input",
        "description": "Channel 1 output enable, active low."
      },
      {
        "number": "2",
        "name": "1A0",
        "type": "input",
        "description": "Channel 1 address select 0."
      },
      {
        "number": "3",
        "name": "1A1",
        "type": "input",
        "description": "Channel 1 address select 1."
      },
      {
        "number": "4",
        "name": "1Y0",
        "type": "output",
        "description": "Channel 1 output 0."
      },
      {
        "number": "5",
        "name": "1Y1",
        "type": "output",
        "description": "Channel 1 output 1."
      },
      {
        "number": "6",
        "name": "1Y2",
        "type": "output",
        "description": "Channel 1 output 2."
      },
      {
        "number": "7",
        "name": "1Y3",
        "type": "output",
        "description": "Channel 1 output 3."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "9",
        "name": "2Y3",
        "type": "output",
        "description": "Channel 2 output 3."
      },
      {
        "number": "10",
        "name": "2Y2",
        "type": "output",
        "description": "Channel 2 output 2."
      },
      {
        "number": "11",
        "name": "2Y1",
        "type": "output",
        "description": "Channel 2 output 1."
      },
      {
        "number": "12",
        "name": "2Y0",
        "type": "output",
        "description": "Channel 2 output 0."
      },
      {
        "number": "13",
        "name": "2A1",
        "type": "input",
        "description": "Channel 2 address select 1."
      },
      {
        "number": "14",
        "name": "2A0",
        "type": "input",
        "description": "Channel 2 address select 0."
      },
      {
        "number": "15",
        "name": "2G",
        "type": "input",
        "description": "Channel 2 output enable, active low."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, operating range 2 V to 5.5 V."
      }
    ],
    "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: Pin 15 (2G) is listed with type '0 I' in the Table 3-1 pin functions, which is inconsistent. It is r; Only the pin table on page 3 was used for the D (SOIC-16) pinout. No electrical specification fields"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0458,
        "at": "2026-10-27T22:05:43"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/sn74ahc139.pdf",
        "pages": 37,
        "sha256": "44a38419673a4abe",
        "source_tier": "mfr"
      },
      "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": "sn74ahc139dr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sn74ahc139dr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
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          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "249ceddd80f8dde78cab83a23d34dc523b9535ee5c0817674c90b235923f6507",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}