74HC164AP

{
  "slug": "74hc164ap",
  "version": "0.1.0",
  "type": "component",
  "description": "Sungine Shift Registers, SOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74hc164ap",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc164ap.kicad_sym",
    "74hc164ap.kicad_mod",
    "74hc164ap.glb",
    "74hc164ap.step",
    "74hc164ap.lbr",
    "docs/hero.png",
    "docs/74hc164ap-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc164ap-hero.glb",
    "74hc164ap-hero.overlay.json",
    "74hc164ap-etched.glb"
  ],
  "component": {
    "mpn": "74HC164AP",
    "manufacturer": "Sungine",
    "package": "SOP-14",
    "pin_count": 14,
    "category": "Logic",
    "subcategory": "Shift Registers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3fff4b16835eec7317f0dbd4391d761e.pdf",
    "parts": {
      "symbol": "74hc164ap.kicad_sym",
      "footprint": "74hc164ap.kicad_mod",
      "model_3d": "74hc164ap-hero.glb",
      "model_3d_plain": "74hc164ap-etched.glb",
      "model_3d_step": "74hc164ap-etched.step",
      "model_3d_step_plain": "74hc164ap.step",
      "lbr": "74hc164ap.lbr"
    },
    "distributor_links": {
      "lcsc": "C5274769"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T12:02:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A",
        "type": "input",
        "description": "Serial data input A, ANDed with B; if either A or B is low, new data entry is inhibited and the first flip-flop is set low on the next clock."
      },
      {
        "number": "2",
        "name": "B",
        "type": "input",
        "description": "Serial data input B, ANDed with A; when one of A or B is high the other input enables data entry on the rising clock edge."
      },
      {
        "number": "3",
        "name": "QA",
        "type": "output",
        "description": "Shift register output A (first stage)."
      },
      {
        "number": "4",
        "name": "QB",
        "type": "output",
        "description": "Shift register output B."
      },
      {
        "number": "5",
        "name": "QC",
        "type": "output",
        "description": "Shift register output C."
      },
      {
        "number": "6",
        "name": "QD",
        "type": "output",
        "description": "Shift register output D."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference; supply current through VCC or GND is limited to ±50 mA."
      },
      {
        "number": "8",
        "name": "CLOCK",
        "type": "input",
        "description": "Clock input, data shifts one position on the low-to-high transition; input rise/fall time max 1000 ns at 2.0 V, 500 ns at 4.5 V, 400 ns at 6.0 V."
      },
      {
        "number": "9",
        "name": "CLEAR",
        "type": "input",
        "description": "Active-low asynchronous clear input, a low level forces all outputs QA to QH low regardless of other inputs."
      },
      {
        "number": "10",
        "name": "QE",
        "type": "output",
        "description": "Shift register output E."
      },
      {
        "number": "11",
        "name": "QF",
        "type": "output",
        "description": "Shift register output F."
      },
      {
        "number": "12",
        "name": "QG",
        "type": "output",
        "description": "Shift register output G."
      },
      {
        "number": "13",
        "name": "QH",
        "type": "output",
        "description": "Shift register output H (last stage); output current limited to ±25 mA."
      },
      {
        "number": "14",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage, recommended operating range 2 V to 6 V, absolute maximum -0.5 V to +7.0 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": [
          "extractor flagged: The ordering table lists 74HC164AP twice, once as SOP (50 pcs/tube) and once as TSSOP14L (60 pcs/tub; Pin descriptions for A, B and CLEAR come from the Chinese overview text and truth table. The datashe",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 6,
        "cost_usd": 0.2238,
        "at": "2026-10-23T12:01:33"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3fff4b16835eec7317f0dbd4391d761e.pdf",
        "pages": 6,
        "sha256": "509ce0913a7e6555",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "74hc164ap.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.7,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc164ap-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.7,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d12abfcd7b8ce622d9fd5d101aecbdd192106cec913c155956204e4d84d6a812",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}