U74HCT245G

{
  "slug": "u74hct245g",
  "version": "0.1.0",
  "type": "component",
  "description": "UTC Unisonic Tech Logic Gates, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "u74hct245g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "u74hct245g.kicad_sym",
    "u74hct245g.kicad_mod",
    "u74hct245g.glb",
    "u74hct245g.step",
    "u74hct245g.lbr",
    "docs/hero.png",
    "docs/u74hct245g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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    "u74hct245g-hero.overlay.json",
    "u74hct245g-etched.glb"
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  "component": {
    "mpn": "U74HCT245G",
    "manufacturer": "UTC Unisonic Tech",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Logic Gates",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602995877329838080",
    "parts": {
      "symbol": "u74hct245g.kicad_sym",
      "footprint": "u74hct245g.kicad_mod",
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      "model_3d_plain": "u74hct245g-etched.glb",
      "model_3d_step": "u74hct245g-etched.step",
      "model_3d_step_plain": "u74hct245g.step",
      "lbr": "u74hct245g.lbr"
    },
    "distributor_links": {
      "lcsc": "C7494911"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T15:07:11Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DIR",
        "type": "input",
        "description": "Direction control: high transmits data from the A bus to the B bus, low transmits from B bus to A bus."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "bidirectional",
        "description": "A-bus data I/O 1, TTL-compatible input with 3-state output."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "bidirectional",
        "description": "A-bus data I/O 2, TTL-compatible input with 3-state output."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "bidirectional",
        "description": "A-bus data I/O 3, TTL-compatible input with 3-state output."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "bidirectional",
        "description": "A-bus data I/O 4, TTL-compatible input with 3-state output."
      },
      {
        "number": "6",
        "name": "A5",
        "type": "bidirectional",
        "description": "A-bus data I/O 5, TTL-compatible input with 3-state output."
      },
      {
        "number": "7",
        "name": "A6",
        "type": "bidirectional",
        "description": "A-bus data I/O 6, TTL-compatible input with 3-state output."
      },
      {
        "number": "8",
        "name": "A7",
        "type": "bidirectional",
        "description": "A-bus data I/O 7, TTL-compatible input with 3-state output."
      },
      {
        "number": "9",
        "name": "A8",
        "type": "bidirectional",
        "description": "A-bus data I/O 8, TTL-compatible input with 3-state output."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference."
      },
      {
        "number": "11",
        "name": "B8",
        "type": "bidirectional",
        "description": "B-bus data I/O 8, TTL-compatible input with 3-state output."
      },
      {
        "number": "12",
        "name": "B7",
        "type": "bidirectional",
        "description": "B-bus data I/O 7, TTL-compatible input with 3-state output."
      },
      {
        "number": "13",
        "name": "B6",
        "type": "bidirectional",
        "description": "B-bus data I/O 6, TTL-compatible input with 3-state output."
      },
      {
        "number": "14",
        "name": "B5",
        "type": "bidirectional",
        "description": "B-bus data I/O 5, TTL-compatible input with 3-state output."
      },
      {
        "number": "15",
        "name": "B4",
        "type": "bidirectional",
        "description": "B-bus data I/O 4, TTL-compatible input with 3-state output."
      },
      {
        "number": "16",
        "name": "B3",
        "type": "bidirectional",
        "description": "B-bus data I/O 3, TTL-compatible input with 3-state output."
      },
      {
        "number": "17",
        "name": "B2",
        "type": "bidirectional",
        "description": "B-bus data I/O 2, TTL-compatible input with 3-state output."
      },
      {
        "number": "18",
        "name": "B1",
        "type": "bidirectional",
        "description": "B-bus data I/O 1, TTL-compatible input with 3-state output."
      },
      {
        "number": "19",
        "name": "OE",
        "type": "input",
        "description": "Active-low output enable: high isolates the device from the buses."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, recommended 4.5V to 5.5V (absolute maximum 7.0V)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet has a single pin configuration drawing shared by DIP-20, SOP-20, SSOP-20 and TSSOP-20.",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 5,
        "cost_usd": 0.2335,
        "at": "2026-10-17T15:05:51"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602995877329838080",
        "pages": 5,
        "sha256": "def9debb908d308d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
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}