74HC273M

{
  "slug": "74hc273m",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Flip Flops, SOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74hc273m",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc273m.kicad_sym",
    "74hc273m.kicad_mod",
    "74hc273m.glb",
    "74hc273m.step",
    "74hc273m.lbr",
    "docs/hero.png",
    "docs/74hc273m-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc273m-hero.glb",
    "74hc273m-hero.overlay.json",
    "74hc273m-etched.glb"
  ],
  "component": {
    "mpn": "74HC273M",
    "manufacturer": "HGSEMI",
    "package": "SOP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Flip Flops",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590393556314718208",
    "parts": {
      "symbol": "74hc273m.kicad_sym",
      "footprint": "74hc273m.kicad_mod",
      "model_3d": "74hc273m-hero.glb",
      "model_3d_plain": "74hc273m-etched.glb",
      "model_3d_step": "74hc273m-etched.step",
      "model_3d_step_plain": "74hc273m.step",
      "lbr": "74hc273m.lbr"
    },
    "distributor_links": {
      "lcsc": "C5160084"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T20:46:57Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "MR",
        "type": "input",
        "description": "Master reset input, active low; when low, all Qn outputs are forced low regardless of CP and Dn."
      },
      {
        "number": "2",
        "name": "Q0",
        "type": "output",
        "description": "Flip-flop 0 output, which takes the D0 value on the low-to-high CP transition and is held low while MR is low."
      },
      {
        "number": "3",
        "name": "D0",
        "type": "input",
        "description": "Data input for flip-flop 0, which must meet the Dn-to-CP setup and hold times around the rising CP edge."
      },
      {
        "number": "4",
        "name": "D1",
        "type": "input",
        "description": "Data input for flip-flop 1, which must meet the Dn-to-CP setup and hold times around the rising CP edge."
      },
      {
        "number": "5",
        "name": "Q1",
        "type": "output",
        "description": "Flip-flop 1 output, which takes the D1 value on the low-to-high CP transition and is held low while MR is low."
      },
      {
        "number": "6",
        "name": "Q2",
        "type": "output",
        "description": "Flip-flop 2 output, which takes the D2 value on the low-to-high CP transition and is held low while MR is low."
      },
      {
        "number": "7",
        "name": "D2",
        "type": "input",
        "description": "Data input for flip-flop 2, which must meet the Dn-to-CP setup and hold times around the rising CP edge."
      },
      {
        "number": "8",
        "name": "D3",
        "type": "input",
        "description": "Data input for flip-flop 3, which must meet the Dn-to-CP setup and hold times around the rising CP edge."
      },
      {
        "number": "9",
        "name": "Q3",
        "type": "output",
        "description": "Flip-flop 3 output, which takes the D3 value on the low-to-high CP transition and is held low while MR is low."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference, 0 V."
      },
      {
        "number": "11",
        "name": "CP",
        "type": "input",
        "description": "Clock input; all eight flip-flops capture their Dn data on the low-to-high transition."
      },
      {
        "number": "12",
        "name": "Q4",
        "type": "output",
        "description": "Flip-flop 4 output, which takes the D4 value on the low-to-high CP transition and is held low while MR is low."
      },
      {
        "number": "13",
        "name": "D4",
        "type": "input",
        "description": "Data input for flip-flop 4, which must meet the Dn-to-CP setup and hold times around the rising CP edge."
      },
      {
        "number": "14",
        "name": "D5",
        "type": "input",
        "description": "Data input for flip-flop 5, which must meet the Dn-to-CP setup and hold times around the rising CP edge."
      },
      {
        "number": "15",
        "name": "Q5",
        "type": "output",
        "description": "Flip-flop 5 output, which takes the D5 value on the low-to-high CP transition and is held low while MR is low."
      },
      {
        "number": "16",
        "name": "Q6",
        "type": "output",
        "description": "Flip-flop 6 output, which takes the D6 value on the low-to-high CP transition and is held low while MR is low."
      },
      {
        "number": "17",
        "name": "D6",
        "type": "input",
        "description": "Data input for flip-flop 6, which must meet the Dn-to-CP setup and hold times around the rising CP edge."
      },
      {
        "number": "18",
        "name": "D7",
        "type": "input",
        "description": "Data input for flip-flop 7, which must meet the Dn-to-CP setup and hold times around the rising CP edge."
      },
      {
        "number": "19",
        "name": "Q7",
        "type": "output",
        "description": "Flip-flop 7 output, which takes the D7 value on the low-to-high CP transition and is held low while MR is low."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply; recommended range 2.0 V to 6.0 V, absolute maximum 7 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 arrangement drawing (section 2.2) is an image and is not present in the extracted text. The ; The datasheet does not label the Qn pins as tri-state; they are typed as output. The MR pin name is "
        ],
        "pages_sent": 13,
        "cost_usd": 0.0416,
        "at": "2026-10-17T20:42:51"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590393556314718208",
        "pages": 13,
        "sha256": "7e8aa93a8f90838a",
        "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": "74hc273m.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": "c5f4d476923099575a9e5bb60e5d32eaace9363b9e21908c3c74ed3b46ec79f0",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc273m-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": "ef832e16ba2a450192cb2f44a6a5dbfe0b520f781ac52898ee78abf3fff1d3eb",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}