CD4520BM

{
  "slug": "cd4520bm",
  "version": "0.1.0",
  "type": "component",
  "description": "lingxingic Counters, Dividers, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "cd4520bm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd4520bm.kicad_sym",
    "cd4520bm.kicad_mod",
    "cd4520bm.glb",
    "cd4520bm.step",
    "cd4520bm.lbr",
    "docs/hero.png",
    "docs/cd4520bm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd4520bm-hero.glb",
    "cd4520bm-hero.overlay.json",
    "cd4520bm-etched.glb"
  ],
  "component": {
    "mpn": "CD4520BM",
    "manufacturer": "lingxingic",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Counters, Dividers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603372378194137088",
    "parts": {
      "symbol": "cd4520bm.kicad_sym",
      "footprint": "cd4520bm.kicad_mod",
      "model_3d": "cd4520bm-hero.glb",
      "model_3d_plain": "cd4520bm-etched.glb",
      "model_3d_step": "cd4520bm-etched.step",
      "model_3d_step_plain": "cd4520bm.step",
      "lbr": "cd4520bm.lbr"
    },
    "distributor_links": {
      "lcsc": "C24833637",
      "digikey": "296-32927-5-ND",
      "mouser": "595-CD4520BM"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T03:35:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-32927-5-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-CD4520BM",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CP0_1",
        "type": "input",
        "description": "Clock input for counter 1 that advances the counter on a LOW-to-HIGH transition when nCP1 is LOW and nMR is LOW, per the function table."
      },
      {
        "number": "2",
        "name": "CP1_1",
        "type": "input",
        "description": "Clock input for counter 1 that advances the counter on a HIGH-to-LOW transition when nCP0 is HIGH and nMR is LOW, per the function table."
      },
      {
        "number": "3",
        "name": "Q0_1",
        "type": "output",
        "description": "Counter 1 binary output bit 0, forced LOW while master reset MR_1 is HIGH."
      },
      {
        "number": "4",
        "name": "Q1_1",
        "type": "output",
        "description": "Counter 1 binary output bit 1, forced LOW while master reset MR_1 is HIGH."
      },
      {
        "number": "5",
        "name": "Q2_1",
        "type": "output",
        "description": "Counter 1 binary output bit 2, forced LOW while master reset MR_1 is HIGH."
      },
      {
        "number": "6",
        "name": "Q3_1",
        "type": "output",
        "description": "Counter 1 binary output bit 3, forced LOW while master reset MR_1 is HIGH."
      },
      {
        "number": "7",
        "name": "MR_1",
        "type": "input",
        "description": "Master reset input for counter 1; when HIGH, outputs Q0 to Q3 are forced LOW regardless of the clock inputs."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground supply voltage, the 0 V reference for all voltages in the datasheet."
      },
      {
        "number": "9",
        "name": "CP0_2",
        "type": "input",
        "description": "Clock input for counter 2 that advances the counter on a LOW-to-HIGH transition when nCP1 is LOW and nMR is LOW, per the function table."
      },
      {
        "number": "10",
        "name": "CP1_2",
        "type": "input",
        "description": "Clock input for counter 2 that advances the counter on a HIGH-to-LOW transition when nCP0 is HIGH and nMR is LOW, per the function table."
      },
      {
        "number": "11",
        "name": "Q0_2",
        "type": "output",
        "description": "Counter 2 binary output bit 0, forced LOW while master reset MR_2 is HIGH."
      },
      {
        "number": "12",
        "name": "Q1_2",
        "type": "output",
        "description": "Counter 2 binary output bit 1, forced LOW while master reset MR_2 is HIGH."
      },
      {
        "number": "13",
        "name": "Q2_2",
        "type": "output",
        "description": "Counter 2 binary output bit 2, forced LOW while master reset MR_2 is HIGH."
      },
      {
        "number": "14",
        "name": "Q3_2",
        "type": "output",
        "description": "Counter 2 binary output bit 3, forced LOW while master reset MR_2 is HIGH."
      },
      {
        "number": "15",
        "name": "MR_2",
        "type": "input",
        "description": "Master reset input for counter 2; when HIGH, outputs Q0 to Q3 are forced LOW regardless of the clock inputs."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage, recommended range 3 V to 15 V referenced to VSS, with an absolute maximum of +18 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 ordering table on page 3 is garbled. The SOP16 package was matched to CD4520BM from the suffix p; The pin configuration diagram on page 4 is scrambled. The pin numbers and names come from the pin de; The datasheet gives no per-pin electrical limits beyond the supply voltage. Output drive and input t"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0525,
        "at": "2026-10-19T03:35:28"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603372378194137088",
        "pages": 15,
        "sha256": "60178b4d605ca8d9",
        "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": "cd4520bm.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": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd4520bm-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": "c16a226bd170945eb01dcc0592a1057068982b3684d946cb46072ab59c8f776b",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}