CD4017B

{
  "schema_version": 1,
  "type": "component",
  "slug": "cd4017b",
  "title": "CD4017B",
  "brief": "TI CMOS decade counter/divider, DIP-16. Ten decoded outputs, carry out, clock inhibit, reset. 3-18 V. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "logic",
    "counter",
    "decade-counter",
    "johnson",
    "dip-16",
    "texas-instruments"
  ],
  "component": {
    "mpn": "CD4017B",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-16",
    "pin_count": 16,
    "category": "Logic IC",
    "subcategory": "Decade counter (1-of-10 decoded)",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cd4017b.pdf",
    "parts": {
      "symbol": "cd4017b.kicad_sym",
      "footprint": "cd4017b.kicad_mod",
      "model_3d": "cd4017b-etched.glb",
      "model_3d_plain": "cd4017b.glb",
      "lbr": "cd4017b.lbr",
      "model_3d_step": "cd4017b-etched.step",
      "model_3d_step_plain": "cd4017b.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "Q5",
        "type": "output",
        "description": "Decoded output 5. Goes high during the 6th clock state (count 5). CMOS push-pull output; typical IOH/IOL ~1 mA at VDD=5 V."
      },
      {
        "number": "2",
        "name": "Q1",
        "type": "output",
        "description": "Decoded output 1. Goes high during count 1."
      },
      {
        "number": "3",
        "name": "Q0",
        "type": "output",
        "description": "Decoded output 0. Goes high during count 0 (also the state after RESET)."
      },
      {
        "number": "4",
        "name": "Q2",
        "type": "output",
        "description": "Decoded output 2. Goes high during count 2."
      },
      {
        "number": "5",
        "name": "Q6",
        "type": "output",
        "description": "Decoded output 6. Goes high during count 6."
      },
      {
        "number": "6",
        "name": "Q7",
        "type": "output",
        "description": "Decoded output 7. Goes high during count 7."
      },
      {
        "number": "7",
        "name": "Q3",
        "type": "output",
        "description": "Decoded output 3. Goes high during count 3."
      },
      {
        "number": "8",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative supply / ground reference (0 V)."
      },
      {
        "number": "9",
        "name": "Q8",
        "type": "output",
        "description": "Decoded output 8. Goes high during count 8."
      },
      {
        "number": "10",
        "name": "Q4",
        "type": "output",
        "description": "Decoded output 4. Goes high during count 4."
      },
      {
        "number": "11",
        "name": "Q9",
        "type": "output",
        "description": "Decoded output 9. Goes high during count 9."
      },
      {
        "number": "12",
        "name": "CARRY_OUT",
        "type": "output",
        "description": "Carry output. Completes one full cycle every 10 clock inputs (high for counts 0-4, low for counts 5-9); useful for cascading counters."
      },
      {
        "number": "13",
        "name": "CLOCK_INHIBIT",
        "type": "input",
        "description": "Active-high clock inhibit. Counter advances on the positive clock transition only when this signal is low; hold high to freeze the count."
      },
      {
        "number": "14",
        "name": "CLOCK",
        "type": "input",
        "description": "Clock input with Schmitt-trigger action; permits unlimited input pulse rise/fall times. Counter advances on the positive-going clock edge. Max fCL 5 MHz @ VDD=10 V."
      },
      {
        "number": "15",
        "name": "RESET",
        "type": "input",
        "description": "Active-high asynchronous reset. Clears the counter to state 0 (Q0 high, Q1-Q9 low) while held high."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply. Operating range 3 V to 18 V (absolute max -0.5 V to +20 V referenced to VSS)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cd4017b.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": "CD4017",
      "logic_family": "CD4000",
      "function_code": "4017",
      "function_class": "Counter",
      "function_name": "Decade Counter / Divider with 10 Decoded Outputs",
      "manufacturer": "Texas Instruments",
      "is_specialty": false
    },
    "models_3d": [
      {
        "file": "cd4017b.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd4017b-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          19.177,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "51ee61cfe57d0253000d70e711a8c65cb74219e95474e2bfa2bf8ba34b6e0a56",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Decade counter / divider (Johnson)",
      "Outputs": "10 decoded (Q0-Q9, 1 high at a time)",
      "Carry out": "1 pulse per 10 counts (cascade)",
      "Control": "clock, clock-inhibit, async reset",
      "Clocking": "advances on rising edge",
      "Supply voltage": "3-18 V",
      "Logic family": "4000B CMOS",
      "Package": "PDIP-16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cd4017b",
    "cd4017",
    "decade counter",
    "johnson counter",
    "led chaser",
    "1 of 10 counter"
  ],
  "discovery_pitch": "CD4017B CMOS decade counter/divider with ten decoded outputs (DIP-16) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cd4017b.kicad_sym",
    "cd4017b.kicad_mod",
    "cd4017b.glb",
    "cd4017b.lbr",
    "docs/hero.png",
    "docs/cd4017b-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cd4017b-etched.step"
  ],
  "variants": [
    {
      "mpn": "CD4017BE (PDIP-16)",
      "kind": "packaging"
    },
    {
      "mpn": "CD4017BM96 (SOIC-16, tape & reel)",
      "kind": "packaging"
    }
  ]
}