CD4028BM

{
  "slug": "cd4028bm",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI Counters, Dividers, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "cd4028bm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd4028bm.kicad_sym",
    "cd4028bm.kicad_mod",
    "cd4028bm.glb",
    "cd4028bm.step",
    "cd4028bm.lbr",
    "docs/hero.png",
    "docs/cd4028bm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd4028bm-hero.glb",
    "cd4028bm-hero.overlay.json",
    "cd4028bm-etched.glb"
  ],
  "component": {
    "mpn": "CD4028BM",
    "manufacturer": "HGSEMI",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Counters, Dividers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757117201533022208",
    "parts": {
      "symbol": "cd4028bm.kicad_sym",
      "footprint": "cd4028bm.kicad_mod",
      "model_3d": "cd4028bm-hero.glb",
      "model_3d_plain": "cd4028bm-etched.glb",
      "model_3d_step": "cd4028bm-etched.step",
      "model_3d_step_plain": "cd4028bm.step",
      "lbr": "cd4028bm.lbr"
    },
    "distributor_links": {
      "lcsc": "C507166",
      "digikey": "2156-CD4028BM-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T19:24:55Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-CD4028BM-ND",
        "status": "found"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "4",
        "type": "output",
        "description": "Decoded output 4, high when BCD input equals 4."
      },
      {
        "number": "2",
        "name": "2",
        "type": "output",
        "description": "Decoded output 2, high when BCD input equals 2."
      },
      {
        "number": "3",
        "name": "0",
        "type": "output",
        "description": "Decoded output 0, high when BCD input equals 0."
      },
      {
        "number": "4",
        "name": "7",
        "type": "output",
        "description": "Decoded output 7, high when input equals 7 and forced low when D is high."
      },
      {
        "number": "5",
        "name": "9",
        "type": "output",
        "description": "Decoded output 9, high when BCD input equals 9."
      },
      {
        "number": "6",
        "name": "5",
        "type": "output",
        "description": "Decoded output 5, high when BCD input equals 5."
      },
      {
        "number": "7",
        "name": "6",
        "type": "output",
        "description": "Decoded output 6, high when BCD input equals 6."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply pin, VSS = 0V."
      },
      {
        "number": "9",
        "name": "8",
        "type": "output",
        "description": "Decoded output 8, high when BCD input equals 8."
      },
      {
        "number": "10",
        "name": "A",
        "type": "input",
        "description": "BCD address input A (least significant bit), diode-clamped to VDD and VSS, input range 0 to VDD."
      },
      {
        "number": "11",
        "name": "D",
        "type": "input",
        "description": "BCD address input D (most significant bit); a high level inhibits octal decoding and forces outputs 0-7 low."
      },
      {
        "number": "12",
        "name": "C",
        "type": "input",
        "description": "BCD address input C, diode-clamped to VDD and VSS, input range 0 to VDD."
      },
      {
        "number": "13",
        "name": "B",
        "type": "input",
        "description": "BCD address input B, diode-clamped to VDD and VSS, input range 0 to VDD."
      },
      {
        "number": "14",
        "name": "1",
        "type": "output",
        "description": "Decoded output 1, high when BCD input equals 1."
      },
      {
        "number": "15",
        "name": "3",
        "type": "output",
        "description": "Decoded output 3, high when BCD input equals 3."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply pin, recommended 3V to 15V, absolute maximum 18V."
      }
    ],
    "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: Ordering table lists CD4028BM/TR as SOP-16 (same SOIC-16 footprint); the connection diagram is share",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 8,
        "cost_usd": 0.236,
        "at": "2026-10-18T19:22:48"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757117201533022208",
        "pages": 8,
        "sha256": "c5c69c649724f0cb",
        "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": "cd4028bm.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd4028bm-etched.step",
        "role": "eda",
        "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": "f756828583c1b6a69411ee9af9a6b5634afeb0f567d3678cfcfcb4d49cf9edca",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}