CD4022B Octal Counter

{
  "schema_version": 1,
  "type": "component",
  "slug": "cd4022",
  "title": "CD4022B Octal Counter",
  "brief": "Divide-by-8 (octal) Johnson counter with 8 decoded outputs, 4000B CMOS.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "logic",
    "counter",
    "johnson",
    "divide-by-8",
    "4000-series",
    "ti",
    "soic-16"
  ],
  "component": {
    "mpn": "CD4022B",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Counter",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cd4022b.pdf",
    "parts": {
      "symbol": "cd4022.kicad_sym",
      "footprint": "cd4022.kicad_mod",
      "model_3d": "cd4022-etched.glb",
      "model_3d_plain": "cd4022.glb",
      "model_3d_step": "cd4022-etched.step",
      "model_3d_step_plain": "cd4022.step",
      "lbr": "cd4022.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "Q1",
        "type": "output",
        "description": "Decoded output '1'. High for one clock cycle when count = 1; otherwise low. CMOS push-pull, sourcing/sinking a few mA."
      },
      {
        "number": "2",
        "name": "Q0",
        "type": "output",
        "description": "Decoded output '0'. High for one clock cycle when the counter is at zero (also on reset)."
      },
      {
        "number": "3",
        "name": "Q2",
        "type": "output",
        "description": "Decoded output '2'. High for one clock cycle when count = 2."
      },
      {
        "number": "4",
        "name": "Q5",
        "type": "output",
        "description": "Decoded output '5'. High for one clock cycle when count = 5."
      },
      {
        "number": "5",
        "name": "Q6",
        "type": "output",
        "description": "Decoded output '6'. High for one clock cycle when count = 6."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection on the CD4022B (this pin is used on CD4017B for a decoded output)."
      },
      {
        "number": "7",
        "name": "Q3",
        "type": "output",
        "description": "Decoded output '3'. High for one clock cycle when count = 3."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative supply / ground reference (0 V)."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection on the CD4022B (this pin is a decoded output on CD4017B)."
      },
      {
        "number": "10",
        "name": "Q7",
        "type": "output",
        "description": "Decoded output '7'. High for one clock cycle when count = 7."
      },
      {
        "number": "11",
        "name": "Q4",
        "type": "output",
        "description": "Decoded output '4'. High for one clock cycle when count = 4."
      },
      {
        "number": "12",
        "name": "CARRY_OUT",
        "type": "output",
        "description": "Carry output. Completes one full cycle every 8 clock inputs; used to ripple-clock the next device in a cascade."
      },
      {
        "number": "13",
        "name": "CLOCK_INHIBIT",
        "type": "input",
        "description": "Active-high clock inhibit. When high, counter advancement via the CLOCK line is disabled. Setup time tS = 230/100/70 ns at 5/10/15 V."
      },
      {
        "number": "14",
        "name": "CLOCK",
        "type": "input",
        "description": "Schmitt-triggered clock input. Counter advances on the positive-going transition when CLOCK INHIBIT is low. fCL_max = 2.5/5/5.5 MHz at 5/10/15 V."
      },
      {
        "number": "15",
        "name": "RESET",
        "type": "input",
        "description": "Active-high asynchronous reset. Clears the counter to zero (Q0 high) while held high. Minimum pulse width 260/110/60 ns at 5/10/15 V."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply, 3-18 V (absolute max VDD-VSS = 20 V)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cd4022b.pdf",
        "pages": 22,
        "sha256": "33e12c4baa664425",
        "source_tier": "mfr"
      },
      "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": "CD4022",
      "logic_family": "CD4000",
      "function_code": "4022",
      "function_class": null,
      "function_name": null,
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "cd4022.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd4022-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": "c6c04bf3ccfcae704107f2b6f3c30c28b8a1724056fc6c38de72cc2569b5cee6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Divide-by-8 Johnson counter",
      "Logic family": "4000B (CMOS)",
      "Outputs": "8 decoded (1-of-8) + carry-out",
      "Supply voltage": "3 V to 18 V",
      "Operating temperature": "-55 C to 125 C"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "octal counter",
    "divide by 8",
    "Johnson counter",
    "sequencer",
    "1-of-8 output"
  ],
  "discovery_pitch": "A divide-by-8 Johnson counter that lights one of eight decoded outputs per clock, for sequencers and 1-of-8 selection.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd4022.kicad_sym",
    "cd4022.kicad_mod",
    "cd4022.glb",
    "cd4022.step",
    "cd4022.lbr",
    "docs/hero.png",
    "docs/cd4022-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd4022-etched.step"
  ],
  "variants": [
    {
      "mpn": "CD4022BE",
      "kind": "unknown"
    },
    {
      "mpn": "CD4022BF3A",
      "kind": "unknown"
    },
    {
      "mpn": "CD4022BNSR",
      "kind": "unknown"
    },
    {
      "mpn": "CD4022BPW",
      "kind": "unknown"
    },
    {
      "mpn": "CD4022BPWR",
      "kind": "unknown"
    }
  ]
}