74VHCT245AMTCX

{
  "slug": "74vhct245amtcx",
  "version": "0.1.0",
  "type": "component",
  "description": "onsemi Buffers / Drivers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic ics",
    "74vhct245amtcx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74vhct245amtcx.kicad_sym",
    "74vhct245amtcx.kicad_mod",
    "74vhct245amtcx.glb",
    "74vhct245amtcx.step",
    "74vhct245amtcx.lbr",
    "docs/hero.png",
    "docs/74vhct245amtcx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74vhct245amtcx-hero.glb",
    "74vhct245amtcx-hero.overlay.json",
    "74vhct245amtcx-etched.glb"
  ],
  "component": {
    "mpn": "74VHCT245AMTCX",
    "manufacturer": "onsemi",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Logic ICs",
    "subcategory": "Buffers / Drivers",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/74vhct245amtcx-d.pdf",
    "parts": {
      "symbol": "74vhct245amtcx.kicad_sym",
      "footprint": "74vhct245amtcx.kicad_mod",
      "model_3d": "74vhct245amtcx-hero.glb",
      "model_3d_plain": "74vhct245amtcx-etched.glb",
      "model_3d_step": "74vhct245amtcx-etched.step",
      "model_3d_step_plain": "74vhct245amtcx.step",
      "lbr": "74vhct245amtcx.lbr"
    },
    "distributor_links": {
      "lcsc": "C903431",
      "digikey": "74VHCT245AMTCXTR-ND",
      "mouser": "512-74VHCT245AMTCX"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T23:54:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "74VHCT245AMTCXTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "512-74VHCT245AMTCX",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "T/R",
        "type": "input",
        "description": "Transmit/Receive input that sets direction: LOW sends Bus B data to Bus A, HIGH sends Bus A data to Bus B when OE is LOW."
      },
      {
        "number": "2",
        "name": "A0",
        "type": "bidirectional",
        "description": "Side A data input or 3-STATE output, bit 0."
      },
      {
        "number": "3",
        "name": "A1",
        "type": "bidirectional",
        "description": "Side A data input or 3-STATE output, bit 1."
      },
      {
        "number": "4",
        "name": "A2",
        "type": "bidirectional",
        "description": "Side A data input or 3-STATE output, bit 2."
      },
      {
        "number": "5",
        "name": "A3",
        "type": "bidirectional",
        "description": "Side A data input or 3-STATE output, bit 3."
      },
      {
        "number": "6",
        "name": "A4",
        "type": "bidirectional",
        "description": "Side A data input or 3-STATE output, bit 4."
      },
      {
        "number": "7",
        "name": "A5",
        "type": "bidirectional",
        "description": "Side A data input or 3-STATE output, bit 5."
      },
      {
        "number": "8",
        "name": "A6",
        "type": "bidirectional",
        "description": "Side A data input or 3-STATE output, bit 6."
      },
      {
        "number": "9",
        "name": "A7",
        "type": "bidirectional",
        "description": "Side A data input or 3-STATE output, bit 7."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin."
      },
      {
        "number": "11",
        "name": "B7",
        "type": "bidirectional",
        "description": "Side B data input or 3-STATE output, bit 7."
      },
      {
        "number": "12",
        "name": "B6",
        "type": "bidirectional",
        "description": "Side B data input or 3-STATE output, bit 6."
      },
      {
        "number": "13",
        "name": "B5",
        "type": "bidirectional",
        "description": "Side B data input or 3-STATE output, bit 5."
      },
      {
        "number": "14",
        "name": "B4",
        "type": "bidirectional",
        "description": "Side B data input or 3-STATE output, bit 4."
      },
      {
        "number": "15",
        "name": "B3",
        "type": "bidirectional",
        "description": "Side B data input or 3-STATE output, bit 3."
      },
      {
        "number": "16",
        "name": "B2",
        "type": "bidirectional",
        "description": "Side B data input or 3-STATE output, bit 2."
      },
      {
        "number": "17",
        "name": "B1",
        "type": "bidirectional",
        "description": "Side B data input or 3-STATE output, bit 1."
      },
      {
        "number": "18",
        "name": "B0",
        "type": "bidirectional",
        "description": "Side B data input or 3-STATE output, bit 0."
      },
      {
        "number": "19",
        "name": "OE",
        "type": "input",
        "description": "Active-low Output Enable input; HIGH places the A and B outputs in the HIGH-Z state."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.5V to 5.5V recommended operating range."
      }
    ],
    "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": [
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.3032,
        "at": "2026-10-26T23:54:33"
      },
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/74vhct245amtcx-d.pdf",
        "pages": 11,
        "sha256": "a30ccf58c035e641",
        "source_tier": "mfr"
      },
      "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": "74vhct245amtcx.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": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74vhct245amtcx-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": "c318c73ae6587262619fa17f7c57d285c531f49b0fe3670048f268ebf465acbc",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}