CY74FCT245ATPC

{
  "slug": "cy74fct245atpc",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Buffers / Drivers, PDIP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic ics",
    "cy74fct245atpc",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cy74fct245atpc.kicad_sym",
    "cy74fct245atpc.kicad_mod",
    "cy74fct245atpc.glb",
    "cy74fct245atpc.step",
    "cy74fct245atpc.lbr",
    "docs/hero.png",
    "docs/cy74fct245atpc-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cy74fct245atpc-hero.glb",
    "cy74fct245atpc-hero.overlay.json",
    "cy74fct245atpc-etched.glb"
  ],
  "component": {
    "mpn": "CY74FCT245ATPC",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-20",
    "pin_count": 20,
    "category": "Logic ICs",
    "subcategory": "Buffers / Drivers",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cy74fct245atpc.pdf",
    "parts": {
      "symbol": "cy74fct245atpc.kicad_sym",
      "footprint": "cy74fct245atpc.kicad_mod",
      "model_3d": "cy74fct245atpc-hero.glb",
      "model_3d_plain": "cy74fct245atpc-etched.glb",
      "model_3d_step": "cy74fct245atpc-etched.step",
      "model_3d_step_plain": "cy74fct245atpc.step",
      "lbr": "cy74fct245atpc.lbr"
    },
    "distributor_links": {
      "lcsc": "C1548261"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T18:10:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 887 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "T/R",
        "type": "input",
        "description": "Transmit/receive input: high sends data from A ports to B ports, low sends B data to bus A."
      },
      {
        "number": "2",
        "name": "A0",
        "type": "bidirectional",
        "description": "A-port channel 0 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "3",
        "name": "A1",
        "type": "bidirectional",
        "description": "A-port channel 1 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "4",
        "name": "A2",
        "type": "bidirectional",
        "description": "A-port channel 2 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "5",
        "name": "A3",
        "type": "bidirectional",
        "description": "A-port channel 3 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "6",
        "name": "A4",
        "type": "bidirectional",
        "description": "A-port channel 4 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "7",
        "name": "A5",
        "type": "bidirectional",
        "description": "A-port channel 5 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "8",
        "name": "A6",
        "type": "bidirectional",
        "description": "A-port channel 6 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "9",
        "name": "A7",
        "type": "bidirectional",
        "description": "A-port channel 7 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "11",
        "name": "B7",
        "type": "bidirectional",
        "description": "B-port channel 7 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "12",
        "name": "B6",
        "type": "bidirectional",
        "description": "B-port channel 6 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "13",
        "name": "B5",
        "type": "bidirectional",
        "description": "B-port channel 5 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "14",
        "name": "B4",
        "type": "bidirectional",
        "description": "B-port channel 4 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "15",
        "name": "B3",
        "type": "bidirectional",
        "description": "B-port channel 3 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "16",
        "name": "B2",
        "type": "bidirectional",
        "description": "B-port channel 2 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "17",
        "name": "B1",
        "type": "bidirectional",
        "description": "B-port channel 1 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "18",
        "name": "B0",
        "type": "bidirectional",
        "description": "B-port channel 0 3-state I/O, high-impedance when OE is high."
      },
      {
        "number": "19",
        "name": "OE",
        "type": "input",
        "description": "Output enable input: when high, both A and B ports are placed in the high-impedance state."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.75 V to 5.25 V recommended for CY74FCT245AT."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin list in the page 1 text extraction is garbled. Pin numbers for B7..B1 (11-17) and the A/B or; The P-package pinout is printed as 'P, Q, or SO'. The packaging addendum lists CY74FCT245ATPC as PDI"
        ],
        "pages_sent": 20,
        "cost_usd": 0.1531,
        "at": "2026-10-23T18:10:35"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cy74fct245atpc.pdf",
        "pages": 20,
        "sha256": "6d8dd41290146e3c",
        "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": [
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        "file": "cy74fct245atpc.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": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cy74fct245atpc-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
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        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
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        "sha256": "40dc7ebe6d389ba3d3cb4e149c9247e5c7045b4c8d177ec134ca5b388a37059e",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}