74HC595N

{
  "schema_version": 1,
  "type": "component",
  "slug": "74hc595n",
  "title": "74HC595N",
  "brief": "HGSEMI Shifting Register, DIP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "74hc595n"
  ],
  "component": {
    "mpn": "74HC595N",
    "manufacturer": "HGSEMI",
    "package": "DIP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Shifting Register",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a3fbc4f7888fd390190e6295c01a3aa8.pdf",
    "parts": {
      "symbol": "74hc595n.kicad_sym",
      "footprint": "74hc595n.kicad_mod",
      "model_3d": "74hc595n-etched.glb",
      "model_3d_plain": "74hc595n.glb",
      "model_3d_step": "74hc595n-etched.step",
      "model_3d_step_plain": "74hc595n.step",
      "lbr": "74hc595n.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "QB",
        "type": "tri_state",
        "description": "Parallel data output bit B (one of QA~QH 8-bit parallel outputs). Tri-state; driven when output-enable G is low, high-Z when G is high."
      },
      {
        "number": "2",
        "name": "QC",
        "type": "tri_state",
        "description": "Parallel data output bit C. Tri-state output controlled by G (pin 13)."
      },
      {
        "number": "3",
        "name": "QD",
        "type": "tri_state",
        "description": "Parallel data output bit D. Tri-state output controlled by G (pin 13)."
      },
      {
        "number": "4",
        "name": "QE",
        "type": "tri_state",
        "description": "Parallel data output bit E. Tri-state output controlled by G (pin 13)."
      },
      {
        "number": "5",
        "name": "QF",
        "type": "tri_state",
        "description": "Parallel data output bit F. Tri-state output controlled by G (pin 13)."
      },
      {
        "number": "6",
        "name": "QG",
        "type": "tri_state",
        "description": "Parallel data output bit G. Tri-state output controlled by G (pin 13)."
      },
      {
        "number": "7",
        "name": "QH",
        "type": "tri_state",
        "description": "Parallel data output bit H (last of the 8 latched parallel outputs). Tri-state output controlled by G (pin 13)."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / 0 V reference (电源地)."
      },
      {
        "number": "9",
        "name": "Q'H",
        "type": "output",
        "description": "Serial data output from the shift register. Used to cascade the serial data to the next 74HC595 (串行数据输出管脚). Not tri-stated; always driven."
      },
      {
        "number": "10",
        "name": "SCLR",
        "type": "input",
        "description": "Active-low shift-register clear (asynchronous reset). Drive low to clear the 8-bit shift register (移位寄存器清零端); must be high for normal shift operation."
      },
      {
        "number": "11",
        "name": "SCK",
        "type": "input",
        "description": "Shift-register clock input (数据输入时钟端). On the rising edge, data on SER is shifted into the internal 8-bit shift register."
      },
      {
        "number": "12",
        "name": "RCK",
        "type": "input",
        "description": "Storage-register (latch) clock (输出存储器锁存时钟端). Rising edge latches the current shift-register contents into the 8-bit output storage register that drives QA~QH."
      },
      {
        "number": "13",
        "name": "G",
        "type": "input",
        "description": "Active-low output enable for the QA~QH tri-state parallel outputs (输出使能端). Low = outputs driven; high = outputs high-impedance. Does not affect Q'H."
      },
      {
        "number": "14",
        "name": "SER",
        "type": "input",
        "description": "Serial data input (数据输入端). Sampled on the rising edge of SCK and shifted into the LSB of the internal shift register."
      },
      {
        "number": "15",
        "name": "QA",
        "type": "tri_state",
        "description": "Parallel data output bit A (first of the QA~QH 8-bit outputs). Tri-state output controlled by G (pin 13)."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, 3.2 V to 6 V (typical 5 V); absolute max 6.5 V. Icc ≤ 5 µA (typical, static) at VCC = 6 V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a3fbc4f7888fd390190e6295c01a3aa8.pdf",
        "pages": 13,
        "sha256": "2466d95b2f765594",
        "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"
    },
    "logic": {
      "family_id": "74HC595",
      "logic_family": "74HC",
      "function_code": "595",
      "function_class": "ShiftRegister",
      "function_name": "8-Bit SIPO Shift Register with Output Latch",
      "manufacturer": null,
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "74hc595n.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,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "74hc595n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ba8c3c03b3d3d673a6b5829ac662b77f1dfc2fb0723a217891b4b918b7849422",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "DIP-16",
      "Category": "Logic",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "74hc595n"
  ],
  "discovery_pitch": "74HC595N (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74hc595n.kicad_sym",
    "74hc595n.kicad_mod",
    "74hc595n.glb",
    "74hc595n.step",
    "74hc595n-etched.step",
    "74hc595n.lbr",
    "docs/hero.png",
    "docs/74hc595n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T15:03:02.263Z"
}