CD74HC4046AM

{
  "schema_version": 1,
  "type": "component",
  "slug": "cd74hc4046am",
  "title": "CD74HC4046AM",
  "brief": "Texas Instruments Clock Generators, PLLs, Frequency Synthesizers, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "clock-timing",
    "cd74hc4046am",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "CD74HC4046AM",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Clock/Timing",
    "subcategory": "Clock Generators, PLLs, Frequency Synthesizers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/cd74hc4046a",
    "parts": {
      "symbol": "cd74hc4046am.kicad_sym",
      "footprint": "cd74hc4046am.kicad_mod",
      "model_3d": "cd74hc4046am-etched.glb",
      "model_3d_plain": "cd74hc4046am.glb",
      "model_3d_step": "cd74hc4046am-etched.step",
      "model_3d_step_plain": "cd74hc4046am.step",
      "lbr": "cd74hc4046am.lbr"
    },
    "distributor_links": {
      "lcsc": "C1519916"
    },
    "pins": [
      {
        "number": "1",
        "name": "PCPOUT",
        "type": "output",
        "description": "Phase Comparator Pulse Output; indicates locked condition when HIGH."
      },
      {
        "number": "2",
        "name": "PC1OUT",
        "type": "output",
        "description": "Phase Comparator 1 Output from Exclusive-OR logic."
      },
      {
        "number": "3",
        "name": "COMPIN",
        "type": "input",
        "description": "Comparator Input common to all three phase comparators."
      },
      {
        "number": "4",
        "name": "VCOOUT",
        "type": "output",
        "description": "VCO Output with 50% duty factor."
      },
      {
        "number": "5",
        "name": "INH",
        "type": "input",
        "description": "Inhibit Input; LOW enables VCO and demodulator, HIGH disables for low standby power."
      },
      {
        "number": "6",
        "name": "C1A",
        "type": "passive",
        "description": "Capacitor C1 Connection A; connect external frequency-setting capacitor between C1A and C1B."
      },
      {
        "number": "7",
        "name": "C1B",
        "type": "passive",
        "description": "Capacitor C1 Connection B; connect external frequency-setting capacitor between C1A and C1B."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground (0V reference)."
      },
      {
        "number": "9",
        "name": "VCOIN",
        "type": "input",
        "description": "VCO Input control voltage; valid operating range 1.1V to VCC-0.9V."
      },
      {
        "number": "10",
        "name": "DEMOUT",
        "type": "output",
        "description": "Demodulator Output; high impedance if unused, load with resistor RS greater than 300kΩ if used."
      },
      {
        "number": "11",
        "name": "R1",
        "type": "passive",
        "description": "Resistor R1 Connection; external resistor 3kΩ to 300kΩ from R1 to GND sets VCO frequency range."
      },
      {
        "number": "12",
        "name": "R2",
        "type": "passive",
        "description": "Resistor R2 Connection; external resistor 3kΩ to 300kΩ from R2 to GND provides frequency offset."
      },
      {
        "number": "13",
        "name": "PC2OUT",
        "type": "tri_state",
        "description": "Phase Comparator 2 Output from edge-triggered phase and frequency detector; three-state output."
      },
      {
        "number": "14",
        "name": "SIGIN",
        "type": "input",
        "description": "Signal Input common to all three phase comparators; DC or AC coupled operation."
      },
      {
        "number": "15",
        "name": "PC3OUT",
        "type": "output",
        "description": "Phase Comparator 3 Output from positive edge-triggered RS flip-flop."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive Supply Voltage; HC types operate from 2V to 6V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 36,
        "cost_usd": 0.3374,
        "at": "2026-09-22T08:29:35"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/cd74hc4046a",
        "pages": 36,
        "sha256": "047ac408a2e3bcfc",
        "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": "cd74hc4046am.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd74hc4046am-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "afedb87d6d01a33e64b9d1d60154bc0fb5b0cabbccc6276ba70185dab799d5d7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-16",
      "Category": "Clock/Timing",
      "Pins": "16"
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "cd74hc4046am"
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  "discovery_pitch": "CD74HC4046AM (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "cd74hc4046am.kicad_sym",
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    "cd74hc4046am.glb",
    "cd74hc4046am.step",
    "cd74hc4046am.lbr",
    "docs/hero.png",
    "docs/cd74hc4046am-datasheet.pdf",
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  "visibility": {
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  },
  "updated_at": "2026-09-24T18:54:07.318Z"
}