74HC238M

{
  "slug": "74hc238m",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Signal Switches, Multiplexers, Decoders, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "74hc238m",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "74hc238m.kicad_sym",
    "74hc238m.kicad_mod",
    "74hc238m.glb",
    "74hc238m.step",
    "74hc238m.lbr",
    "docs/hero.png",
    "docs/74hc238m-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74hc238m-hero.glb",
    "74hc238m-hero.overlay.json",
    "74hc238m-etched.glb"
  ],
  "component": {
    "mpn": "74HC238M",
    "manufacturer": "HGSEMI",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Signal Switches, Multiplexers, Decoders",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8787665020743876608",
    "parts": {
      "symbol": "74hc238m.kicad_sym",
      "footprint": "74hc238m.kicad_mod",
      "model_3d": "74hc238m-hero.glb",
      "model_3d_plain": "74hc238m-etched.glb",
      "model_3d_step": "74hc238m-etched.step",
      "model_3d_step_plain": "74hc238m.step",
      "lbr": "74hc238m.lbr"
    },
    "distributor_links": {
      "lcsc": "C7432189"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T10:34:07Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "Address input (binary weight 0) of the 3-to-8 decoder; inputs include clamp diodes and accept CMOS levels."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Address input (binary weight 1) of the 3-to-8 decoder; inputs include clamp diodes and accept CMOS levels."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Address input (binary weight 2) of the 3-to-8 decoder; inputs include clamp diodes and accept CMOS levels."
      },
      {
        "number": "4",
        "name": "E1",
        "type": "input",
        "description": "Enable input, active LOW; all outputs stay LOW unless E1 and E2 are LOW and E3 is HIGH."
      },
      {
        "number": "5",
        "name": "E2",
        "type": "input",
        "description": "Enable input, active LOW; all outputs stay LOW unless E1 and E2 are LOW and E3 is HIGH."
      },
      {
        "number": "6",
        "name": "E3",
        "type": "input",
        "description": "Enable input, active HIGH; all outputs stay LOW unless E1 and E2 are LOW and E3 is HIGH."
      },
      {
        "number": "7",
        "name": "Y7",
        "type": "output",
        "description": "Decoder output 7, active HIGH; one of the mutually exclusive outputs, absolute maximum output current ±25 mA."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0 V) reference for all voltages on the device."
      },
      {
        "number": "9",
        "name": "Y6",
        "type": "output",
        "description": "Decoder output 6, active HIGH; one of the mutually exclusive outputs, absolute maximum output current ±25 mA."
      },
      {
        "number": "10",
        "name": "Y5",
        "type": "output",
        "description": "Decoder output 5, active HIGH; one of the mutually exclusive outputs, absolute maximum output current ±25 mA."
      },
      {
        "number": "11",
        "name": "Y4",
        "type": "output",
        "description": "Decoder output 4, active HIGH; one of the mutually exclusive outputs, absolute maximum output current ±25 mA."
      },
      {
        "number": "12",
        "name": "Y3",
        "type": "output",
        "description": "Decoder output 3, active HIGH; one of the mutually exclusive outputs, absolute maximum output current ±25 mA."
      },
      {
        "number": "13",
        "name": "Y2",
        "type": "output",
        "description": "Decoder output 2, active HIGH; one of the mutually exclusive outputs, absolute maximum output current ±25 mA."
      },
      {
        "number": "14",
        "name": "Y1",
        "type": "output",
        "description": "Decoder output 1, active HIGH; one of the mutually exclusive outputs, absolute maximum output current ±25 mA."
      },
      {
        "number": "15",
        "name": "Y0",
        "type": "output",
        "description": "Decoder output 0, active HIGH; one of the mutually exclusive outputs, absolute maximum output current ±25 mA."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; recommended operating 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: The pin table is shared by the DIP-16, SOP-16 and TSSOP-16 variants. The datasheet's ordering table ; The overbar on E1 and E2 (active LOW) is lost in text extraction. Pin names are given as E1 and E2, "
        ],
        "pages_sent": 14,
        "cost_usd": 0.0541,
        "at": "2026-10-18T10:31:52"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8787665020743876608",
        "pages": 14,
        "sha256": "daf0c6455e77887d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "74hc238m.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-18",
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      },
      {
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        "sha256": "2a25ccd9944357b8d0d5bea62102a241eaa877a183017ce741fa275ac1311418",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  }
}