74C923WN

{
  "slug": "74c923wn",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Signal Switches, Multiplexers, Decoders, DIP-20. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74c923wn",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "74c923wn.kicad_sym",
    "74c923wn.kicad_mod",
    "74c923wn.glb",
    "74c923wn.step",
    "74c923wn.lbr",
    "docs/hero.png",
    "docs/74c923wn-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74c923wn-hero.glb",
    "74c923wn-hero.overlay.json",
    "74c923wn-etched.glb"
  ],
  "component": {
    "mpn": "74C923WN",
    "manufacturer": "HGSEMI",
    "package": "DIP-20",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758162996751278080",
    "parts": {
      "symbol": "74c923wn.kicad_sym",
      "footprint": "74c923wn.kicad_mod",
      "model_3d": "74c923wn-hero.glb",
      "model_3d_plain": "74c923wn-etched.glb",
      "model_3d_step": "74c923wn-etched.step",
      "model_3d_step_plain": "74c923wn.step",
      "lbr": "74c923wn.lbr"
    },
    "distributor_links": {
      "lcsc": "C398068"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T17:24:04Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "ROW Y1",
        "type": "input",
        "description": "Row 1 key matrix input with on-chip pull-up (Irp -2 to -5 µA min/max at VCC=5V), pulled low by a closed switch when its column is scanned."
      },
      {
        "number": "2",
        "name": "ROW Y2",
        "type": "input",
        "description": "Row 2 key matrix input with on-chip pull-up device."
      },
      {
        "number": "3",
        "name": "ROW Y3",
        "type": "input",
        "description": "Row 3 key matrix input with on-chip pull-up device."
      },
      {
        "number": "4",
        "name": "ROW Y4",
        "type": "input",
        "description": "Row 4 key matrix input with on-chip pull-up device."
      },
      {
        "number": "5",
        "name": "ROW Y5",
        "type": "input",
        "description": "Row 5 key matrix input with on-chip pull-up device (74C923 only)."
      },
      {
        "number": "6",
        "name": "OSCILLATOR",
        "type": "input",
        "description": "Schmitt trigger oscillator input setting the keyboard scan rate, driven by an external clock or an external capacitor."
      },
      {
        "number": "7",
        "name": "KEYBOUNCE MASK",
        "type": "input",
        "description": "Key bounce mask input where a single external capacitor sets the debounce period; omitting the capacitor defeats debounce."
      },
      {
        "number": "8",
        "name": "COLUMN X4",
        "type": "output",
        "description": "Column 4 open-drain scan output, driven low sequentially, with Ron of 500 to 1400 ohms at VCC=5V."
      },
      {
        "number": "9",
        "name": "COLUMN X3",
        "type": "output",
        "description": "Column 3 open-drain scan output, driven low sequentially."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground supply pin."
      },
      {
        "number": "11",
        "name": "COLUMN X2",
        "type": "output",
        "description": "Column 2 open-drain scan output, driven low sequentially."
      },
      {
        "number": "12",
        "name": "COLUMN X1",
        "type": "output",
        "description": "Column 1 open-drain scan output, driven low sequentially."
      },
      {
        "number": "13",
        "name": "DATA AVAILABLE",
        "type": "output",
        "description": "Goes high when a valid keyboard entry has been made and returns low when the key is released."
      },
      {
        "number": "14",
        "name": "OUTPUT ENABLE",
        "type": "input",
        "description": "Active-low output enable that enables the 3-STATE data outputs when taken low."
      },
      {
        "number": "15",
        "name": "DATA OUT E",
        "type": "tri_state",
        "description": "3-STATE data output E of the last-key register, LPTTL compatible (74C923 only)."
      },
      {
        "number": "16",
        "name": "DATA OUT D",
        "type": "tri_state",
        "description": "3-STATE data output D of the last-key register, LPTTL compatible."
      },
      {
        "number": "17",
        "name": "DATA OUT C",
        "type": "tri_state",
        "description": "3-STATE data output C of the last-key register, LPTTL compatible."
      },
      {
        "number": "18",
        "name": "DATA OUT B",
        "type": "tri_state",
        "description": "3-STATE data output B of the last-key register, LPTTL compatible."
      },
      {
        "number": "19",
        "name": "DATA OUT A",
        "type": "tri_state",
        "description": "3-STATE data output A of the last-key register, LPTTL compatible."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage, 3V to 15V operating range."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758162996751278080",
        "pages": 15,
        "sha256": "2f2ce833dc038823",
        "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"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ca359c9b9e0ce94efcb6c96866513f659eef6517d629ace3c4a0a779f6fd57bb",
        "checked": "2026-10-21",
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      },
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    ]
  }
}