TC74HC273AF

{
  "slug": "tc74hc273af",
  "version": "0.1.0",
  "type": "component",
  "description": "TOSHIBA Flip Flops, SOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "tc74hc273af",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tc74hc273af.kicad_sym",
    "tc74hc273af.kicad_mod",
    "tc74hc273af.glb",
    "tc74hc273af.step",
    "tc74hc273af.lbr",
    "docs/hero.png",
    "docs/tc74hc273af-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tc74hc273af-hero.glb",
    "tc74hc273af-hero.overlay.json",
    "tc74hc273af-etched.glb"
  ],
  "component": {
    "mpn": "TC74HC273AF",
    "manufacturer": "TOSHIBA",
    "package": "SOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Flip Flops",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600427082191560704",
    "parts": {
      "symbol": "tc74hc273af.kicad_sym",
      "footprint": "tc74hc273af.kicad_mod",
      "model_3d": "tc74hc273af-hero.glb",
      "model_3d_plain": "tc74hc273af-etched.glb",
      "model_3d_step": "tc74hc273af-etched.step",
      "model_3d_step_plain": "tc74hc273af.step",
      "lbr": "tc74hc273af.lbr"
    },
    "distributor_links": {
      "lcsc": "C7066963"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T11:26:24Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CLR",
        "type": "input",
        "description": "Active-low asynchronous clear input; when held L the Q outputs are forced low independent of other inputs."
      },
      {
        "number": "2",
        "name": "Q1",
        "type": "output",
        "description": "Flip-flop 1 output, drives 10 LSTTL loads (|IOH| = IOL = 4 mA min)."
      },
      {
        "number": "3",
        "name": "D1",
        "type": "input",
        "description": "Flip-flop 1 data input, transferred to Q1 on the rising clock edge."
      },
      {
        "number": "4",
        "name": "D2",
        "type": "input",
        "description": "Flip-flop 2 data input, transferred to Q2 on the rising clock edge."
      },
      {
        "number": "5",
        "name": "Q2",
        "type": "output",
        "description": "Flip-flop 2 output, drives 10 LSTTL loads (|IOH| = IOL = 4 mA min)."
      },
      {
        "number": "6",
        "name": "Q3",
        "type": "output",
        "description": "Flip-flop 3 output, drives 10 LSTTL loads (|IOH| = IOL = 4 mA min)."
      },
      {
        "number": "7",
        "name": "D3",
        "type": "input",
        "description": "Flip-flop 3 data input, transferred to Q3 on the rising clock edge."
      },
      {
        "number": "8",
        "name": "D4",
        "type": "input",
        "description": "Flip-flop 4 data input, transferred to Q4 on the rising clock edge."
      },
      {
        "number": "9",
        "name": "Q4",
        "type": "output",
        "description": "Flip-flop 4 output, drives 10 LSTTL loads (|IOH| = IOL = 4 mA min)."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin (0 V)."
      },
      {
        "number": "11",
        "name": "CK",
        "type": "input",
        "description": "Common clock input; data is transferred to the Q outputs on the positive-going edge."
      },
      {
        "number": "12",
        "name": "Q5",
        "type": "output",
        "description": "Flip-flop 5 output, drives 10 LSTTL loads (|IOH| = IOL = 4 mA min)."
      },
      {
        "number": "13",
        "name": "D5",
        "type": "input",
        "description": "Flip-flop 5 data input, transferred to Q5 on the rising clock edge."
      },
      {
        "number": "14",
        "name": "D6",
        "type": "input",
        "description": "Flip-flop 6 data input, transferred to Q6 on the rising clock edge."
      },
      {
        "number": "15",
        "name": "Q6",
        "type": "output",
        "description": "Flip-flop 6 output, drives 10 LSTTL loads (|IOH| = IOL = 4 mA min)."
      },
      {
        "number": "16",
        "name": "Q7",
        "type": "output",
        "description": "Flip-flop 7 output, drives 10 LSTTL loads (|IOH| = IOL = 4 mA min)."
      },
      {
        "number": "17",
        "name": "D7",
        "type": "input",
        "description": "Flip-flop 7 data input, transferred to Q7 on the rising clock edge."
      },
      {
        "number": "18",
        "name": "D8",
        "type": "input",
        "description": "Flip-flop 8 data input, transferred to Q8 on the rising clock edge."
      },
      {
        "number": "19",
        "name": "Q8",
        "type": "output",
        "description": "Flip-flop 8 output, drives 10 LSTTL loads (|IOH| = IOL = 4 mA min)."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, operating range 2 to 6 V (absolute maximum -0.5 to 7 V)."
      }
    ],
    "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": 8,
        "cost_usd": 0.2652,
        "at": "2026-10-20T11:26:02"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600427082191560704",
        "pages": 8,
        "sha256": "8f6aa2002ada1c33",
        "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": "tc74hc273af.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.26,
          12.8,
          2.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0e6c921e903805c697c6eca57ef4cb47385b4ad323ae859a626071962e7ba763",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tc74hc273af-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.26,
          12.8,
          2.65
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "278c970e3c69485794c908274c17d2afba4b0d9ed6d35c689a760b3ab4029f94",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}