74HC245MT

{
  "slug": "74hc245mt",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Buffers, Drivers, Receivers, Transceivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74hc245mt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc245mt.kicad_sym",
    "74hc245mt.kicad_mod",
    "74hc245mt.glb",
    "74hc245mt.step",
    "74hc245mt.lbr",
    "docs/hero.png",
    "docs/74hc245mt-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc245mt-hero.glb",
    "74hc245mt-hero.overlay.json",
    "74hc245mt-etched.glb"
  ],
  "component": {
    "mpn": "74HC245MT",
    "manufacturer": "HGSEMI",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8762802103859458048",
    "parts": {
      "symbol": "74hc245mt.kicad_sym",
      "footprint": "74hc245mt.kicad_mod",
      "model_3d": "74hc245mt-hero.glb",
      "model_3d_plain": "74hc245mt-etched.glb",
      "model_3d_step": "74hc245mt-etched.step",
      "model_3d_step_plain": "74hc245mt.step",
      "lbr": "74hc245mt.lbr"
    },
    "distributor_links": {
      "lcsc": "C5310786"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T05:17:05Z",
      "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": "Transfer direction control input that selects the direction of data flow between the A and B buses according to the truth table, with the device enabled when OE is low."
      },
      {
        "number": "2",
        "name": "A0",
        "type": "bidirectional",
        "description": "Data input/output on the A bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "3",
        "name": "A1",
        "type": "bidirectional",
        "description": "Data input/output on the A bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "4",
        "name": "A2",
        "type": "bidirectional",
        "description": "Data input/output on the A bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "5",
        "name": "A3",
        "type": "bidirectional",
        "description": "Data input/output on the A bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "6",
        "name": "A4",
        "type": "bidirectional",
        "description": "Data input/output on the A bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "7",
        "name": "A5",
        "type": "bidirectional",
        "description": "Data input/output on the A bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "8",
        "name": "A6",
        "type": "bidirectional",
        "description": "Data input/output on the A bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "9",
        "name": "A7",
        "type": "bidirectional",
        "description": "Data input/output on the A bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V) for the device."
      },
      {
        "number": "11",
        "name": "B7",
        "type": "bidirectional",
        "description": "Data input/output on the B bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "12",
        "name": "B6",
        "type": "bidirectional",
        "description": "Data input/output on the B bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "13",
        "name": "B5",
        "type": "bidirectional",
        "description": "Data input/output on the B bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "14",
        "name": "B4",
        "type": "bidirectional",
        "description": "Data input/output on the B bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "15",
        "name": "B3",
        "type": "bidirectional",
        "description": "Data input/output on the B bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "16",
        "name": "B2",
        "type": "bidirectional",
        "description": "Data input/output on the B bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "17",
        "name": "B1",
        "type": "bidirectional",
        "description": "Data input/output on the B bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "18",
        "name": "B0",
        "type": "bidirectional",
        "description": "Data input/output on the B bus, a positive-phase three-state port whose output current is limited to ±35 mA (Io, absolute maximum)."
      },
      {
        "number": "19",
        "name": "OE",
        "type": "input",
        "description": "Active-low output enable input; when high, the A and B port outputs are placed in high-impedance state, isolating the buses."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, recommended 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 pin name is garbled in the extracted text (the overbar is lost); it is labelled OE here based on; The DIR truth table on page 2 is ambiguous in the extracted text (the An/Bn column headers are mixed; The datasheet gives the pin function table for DIP-20/SOP-20/TSSOP-20 as one shared pinout and only ",
          "1/20 pin names appear NOWHERE in the datasheet text: ['19:OE@p3']"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0478,
        "at": "2026-10-19T05:16:48"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8762802103859458048",
        "pages": 14,
        "sha256": "cb1176016eea4118",
        "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": "74hc245mt.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc245mt-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "29f4cc8a73265c7409f1d88d5ad32288af1d9bbfd1a62d9554fa8be85d821b10",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}