74HC595DM

{
  "slug": "74hc595dm",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Shift Registers, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74hc595dm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "74hc595dm.kicad_sym",
    "74hc595dm.kicad_mod",
    "74hc595dm.glb",
    "74hc595dm.step",
    "74hc595dm.lbr",
    "docs/hero.png",
    "docs/74hc595dm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc595dm-hero.glb",
    "74hc595dm-hero.overlay.json",
    "74hc595dm-etched.glb"
  ],
  "component": {
    "mpn": "74HC595DM",
    "manufacturer": "HGSEMI",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Shift Registers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603010118036299776",
    "parts": {
      "symbol": "74hc595dm.kicad_sym",
      "footprint": "74hc595dm.kicad_mod",
      "model_3d": "74hc595dm-hero.glb",
      "model_3d_plain": "74hc595dm-etched.glb",
      "model_3d_step": "74hc595dm-etched.step",
      "model_3d_step_plain": "74hc595dm.step",
      "lbr": "74hc595dm.lbr"
    },
    "distributor_links": {
      "lcsc": "C5310886"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T21:57:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Q1",
        "type": "tri_state",
        "description": "Parallel data output Q1 from the storage register; goes to high-impedance OFF-state when OE is HIGH."
      },
      {
        "number": "2",
        "name": "Q2",
        "type": "tri_state",
        "description": "Parallel data output Q2 from the storage register; goes to high-impedance OFF-state when OE is HIGH."
      },
      {
        "number": "3",
        "name": "Q3",
        "type": "tri_state",
        "description": "Parallel data output Q3 from the storage register; goes to high-impedance OFF-state when OE is HIGH."
      },
      {
        "number": "4",
        "name": "Q4",
        "type": "tri_state",
        "description": "Parallel data output Q4 from the storage register; goes to high-impedance OFF-state when OE is HIGH."
      },
      {
        "number": "5",
        "name": "Q5",
        "type": "tri_state",
        "description": "Parallel data output Q5 from the storage register; goes to high-impedance OFF-state when OE is HIGH."
      },
      {
        "number": "6",
        "name": "Q6",
        "type": "tri_state",
        "description": "Parallel data output Q6 from the storage register; goes to high-impedance OFF-state when OE is HIGH."
      },
      {
        "number": "7",
        "name": "Q7",
        "type": "tri_state",
        "description": "Parallel data output Q7 from the storage register; goes to high-impedance OFF-state when OE is HIGH."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V) for all voltages referenced in the datasheet."
      },
      {
        "number": "9",
        "name": "Q7S",
        "type": "output",
        "description": "Serial data output carrying shift register stage 7 for cascading to the DS input of another device; absolute max output current is ±25 mA."
      },
      {
        "number": "10",
        "name": "MR",
        "type": "input",
        "description": "Asynchronous master reset, active LOW; a LOW resets only the shift register and does not affect the storage register."
      },
      {
        "number": "11",
        "name": "SHCP",
        "type": "input",
        "description": "Shift register clock; data on DS is shifted in on each LOW-to-HIGH transition of SHCP."
      },
      {
        "number": "12",
        "name": "STCP",
        "type": "input",
        "description": "Storage register clock; a LOW-to-HIGH transition transfers the shift register contents to the storage register and parallel outputs."
      },
      {
        "number": "13",
        "name": "OE",
        "type": "input",
        "description": "Output enable, active LOW; a HIGH forces the Qn outputs to high-impedance OFF-state without changing the register contents."
      },
      {
        "number": "14",
        "name": "DS",
        "type": "input",
        "description": "Serial data input to the shift register stage 0, sampled on the LOW-to-HIGH transition of SHCP."
      },
      {
        "number": "15",
        "name": "Q0",
        "type": "tri_state",
        "description": "Parallel data output Q0 from the storage register; goes to high-impedance OFF-state when OE is HIGH."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, recommended range 2.0 V to 6.0 V (absolute maximum 7.0 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: Ordering table (page 1) lists the SOP-16 part as 74HC595DM/TR; the MPN 74HC595DM without the /TR suf; The active-LOW overbars on MR and OE are not reliably rendered in the extracted text; names are give; Pin types for Q0-Q7 are set to tri_state because the datasheet states the outputs have 3-state behav"
        ],
        "pages_sent": 18,
        "cost_usd": 0.0594,
        "at": "2026-10-17T21:55:09"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603010118036299776",
        "pages": 18,
        "sha256": "efeb57a06d16885c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "74hc595dm.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc595dm-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
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          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "55215f334496d92abe4947ee2e1a19e45af91fecb7e1a377878b618364945e4b",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}