74HC245N

{
  "slug": "74hc245n",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Buffers, Drivers, Receivers, Transceivers, DIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74hc245n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc245n.kicad_sym",
    "74hc245n.kicad_mod",
    "74hc245n.glb",
    "74hc245n.step",
    "74hc245n.lbr",
    "docs/hero.png",
    "docs/74hc245n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc245n-hero.glb",
    "74hc245n-hero.overlay.json",
    "74hc245n-etched.glb"
  ],
  "component": {
    "mpn": "74HC245N",
    "manufacturer": "HGSEMI",
    "package": "DIP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757159467425783808",
    "parts": {
      "symbol": "74hc245n.kicad_sym",
      "footprint": "74hc245n.kicad_mod",
      "model_3d": "74hc245n-hero.glb",
      "model_3d_plain": "74hc245n-etched.glb",
      "model_3d_step": "74hc245n-etched.step",
      "model_3d_step_plain": "74hc245n.step",
      "lbr": "74hc245n.lbr"
    },
    "distributor_links": {
      "lcsc": "C507182"
    },
    "distributor_check": {
      "checked_at": "2026-10-14T18:02:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "DIR",
        "type": "input",
        "description": "Transmission direction control input that selects the direction of data transfer between the A and B ports."
      },
      {
        "number": "2",
        "name": "A0",
        "type": "bidirectional",
        "description": "Data input/output port A0 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "3",
        "name": "A1",
        "type": "bidirectional",
        "description": "Data input/output port A1 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "4",
        "name": "A2",
        "type": "bidirectional",
        "description": "Data input/output port A2 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "5",
        "name": "A3",
        "type": "bidirectional",
        "description": "Data input/output port A3 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "6",
        "name": "A4",
        "type": "bidirectional",
        "description": "Data input/output port A4 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "7",
        "name": "A5",
        "type": "bidirectional",
        "description": "Data input/output port A5 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "8",
        "name": "A6",
        "type": "bidirectional",
        "description": "Data input/output port A6 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "9",
        "name": "A7",
        "type": "bidirectional",
        "description": "Data input/output port A7 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for the device."
      },
      {
        "number": "11",
        "name": "B7",
        "type": "bidirectional",
        "description": "Data input/output port B7 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "12",
        "name": "B6",
        "type": "bidirectional",
        "description": "Data input/output port B6 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "13",
        "name": "B5",
        "type": "bidirectional",
        "description": "Data input/output port B5 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "14",
        "name": "B4",
        "type": "bidirectional",
        "description": "Data input/output port B4 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "15",
        "name": "B3",
        "type": "bidirectional",
        "description": "Data input/output port B3 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "16",
        "name": "B2",
        "type": "bidirectional",
        "description": "Data input/output port B2 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "17",
        "name": "B1",
        "type": "bidirectional",
        "description": "Data input/output port B1 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "18",
        "name": "B0",
        "type": "bidirectional",
        "description": "Data input/output port B0 of the 8-bit bus transceiver, with three-state outputs."
      },
      {
        "number": "19",
        "name": "OE",
        "type": "input",
        "description": "Active-low output enable input; when driven high, the A and B ports are placed in the high-impedance (Z) state."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; recommended operating range 2.0 V to 6.0 V, with an absolute maximum of 7.0 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: The OE overline is garbled in the extracted text. Pin 19 is named OE and described as active-low bec; The truth table in the extracted text is partly garbled, so the A/B transfer direction for each DIR ; The datasheet gives one pin table shared by DIP-20, SOP-20 and TSSOP-20. The DIP-20 mapping above is",
          "1/20 pin names appear NOWHERE in the datasheet text: ['19:OE@p3']"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0475,
        "at": "2026-10-14T18:02:00"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757159467425783808",
        "pages": 14,
        "sha256": "430f66157c4aa735",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "74hc245n.step",
        "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,
          26.162,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ca359c9b9e0ce94efcb6c96866513f659eef6517d629ace3c4a0a779f6fd57bb",
        "checked": "2026-10-14",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc245n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "6f0780b016adf1d536c07ff7328c903ab7cad5c3924a3225ae7b1ec821ec6358",
        "checked": "2026-10-14",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}