CD74HC4051E

{
  "schema_version": 1,
  "type": "component",
  "slug": "cd74hc4051e",
  "title": "CD74HC4051E",
  "brief": "Texas Instruments Analog Switches, Multiplexers, PDIP-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",
    "interface",
    "cd74hc4051e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CD74HC4051E",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "Analog Switches, Multiplexers",
    "datasheet": "https://www.ti.com/cn/lit/ds/symlink/cd74hc4051.pdf",
    "parts": {
      "symbol": "cd74hc4051e.kicad_sym",
      "footprint": "cd74hc4051e.kicad_mod",
      "model_3d": "cd74hc4051e-hero.glb",
      "model_3d_plain": "cd74hc4051e-etched.glb",
      "model_3d_step": "cd74hc4051e-etched.step",
      "model_3d_step_plain": "cd74hc4051e.step",
      "lbr": "cd74hc4051e.lbr"
    },
    "distributor_links": {
      "lcsc": "C205976",
      "digikey": "296-12810-5-ND",
      "mouser": "595-CD74HC4051E"
    },
    "distributor_check": {
      "checked_at": "2026-10-14T12:53:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-12810-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-CD74HC4051E",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CH A4",
        "type": "bidirectional",
        "description": "Analog channel 4 input/output, connected to COM when E is low and S2=H, S1=L, S0=L."
      },
      {
        "number": "2",
        "name": "CH A6",
        "type": "bidirectional",
        "description": "Analog channel 6 input/output, connected to COM when E is low and S2=H, S1=H, S0=L."
      },
      {
        "number": "3",
        "name": "COM OUT/IN",
        "type": "bidirectional",
        "description": "Common analog output/input that connects to whichever channel is selected by S2, S1, S0 while E is low."
      },
      {
        "number": "4",
        "name": "CH A7",
        "type": "bidirectional",
        "description": "Analog channel 7 input/output, connected to COM when E is low and S2=H, S1=H, S0=H."
      },
      {
        "number": "5",
        "name": "CH A5",
        "type": "bidirectional",
        "description": "Analog channel 5 input/output, connected to COM when E is low and S2=H, S1=L, S0=H."
      },
      {
        "number": "6",
        "name": "E",
        "type": "input",
        "description": "Active-low enable input; when high it disables all switches into the off state."
      },
      {
        "number": "7",
        "name": "VEE",
        "type": "power_in",
        "description": "Negative power supply input; recommended range is 0 V to -6 V, and VCC - VEE must stay within 2 V to 10 V."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for all voltages on the device."
      },
      {
        "number": "9",
        "name": "S2",
        "type": "input",
        "description": "Channel select 2 binary address input (most significant bit) for choosing among channels 0 to 7."
      },
      {
        "number": "10",
        "name": "S1",
        "type": "input",
        "description": "Channel select 1 binary address input for choosing among channels 0 to 7."
      },
      {
        "number": "11",
        "name": "S0",
        "type": "input",
        "description": "Channel select 0 binary address input (least significant bit) for choosing among channels 0 to 7."
      },
      {
        "number": "12",
        "name": "CH A3",
        "type": "bidirectional",
        "description": "Analog channel 3 input/output, connected to COM when E is low and S2=L, S1=H, S0=H."
      },
      {
        "number": "13",
        "name": "CH A0",
        "type": "bidirectional",
        "description": "Analog channel 0 input/output, connected to COM when E is low and S2=L, S1=L, S0=L."
      },
      {
        "number": "14",
        "name": "CH A1",
        "type": "bidirectional",
        "description": "Analog channel 1 input/output, connected to COM when E is low and S2=L, S1=L, S0=H."
      },
      {
        "number": "15",
        "name": "CH A2",
        "type": "bidirectional",
        "description": "Analog channel 2 input/output, connected to COM when E is low and S2=L, S1=H, S0=L."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive power supply input; recommended VCC is 2 V to 6 V for HC types (4.5 V to 5.5 V for HCT types)."
      }
    ],
    "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: Pin table (Table 4-1) is for the CDxHCx4051B family and the pin-function figure covers the J/N/D/NS/; Channel and COM pins are listed as I/O in the datasheet and mapped to KiCad 'bidirectional'; the dat; Enable pin is printed as '!E' in the text extraction and described as active-low (低电平有效) in Table 4-"
        ],
        "pages_sent": 22,
        "cost_usd": 0.1211,
        "at": "2026-10-14T12:52:42"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/ds/symlink/cd74hc4051.pdf",
        "pages": 50,
        "sha256": "cc5bd993625a4388",
        "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": [
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        "file": "cd74hc4051e.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,
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "17a30b1f0ab3fd5384a1231e3c63c394888d5b952c542a8c189e023ed3467464",
        "checked": "2026-10-14",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cd74hc4051e-etched.step",
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        "extents_mm": [
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
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        "checked": "2026-10-14",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "PDIP-16",
      "Category": "Interface",
      "Pins": "16"
    },
    "characteristics": {
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      "source": "datasheet",
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          "name": "Supply voltage VCC (HC type)",
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          "kind": "recommended_operating",
          "unit": "V",
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          "max": 6,
          "conditions": "TA = full package temperature range; referenced to GND",
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        {
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        {
          "name": "Supply voltage VEE (HC type)",
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          "conditions": "TA = full package temperature range; printed as 0 and -6 V",
          "source_page": 7,
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        },
        {
          "name": "DC input control voltage",
          "symbol": "VI",
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          "conditions": "max printed as VCC",
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        },
        {
          "name": "Ambient temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
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          "name": "Input rise and fall time",
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        {
          "name": "Supply voltage VCC – VEE",
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          "min": -0.5,
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        {
          "name": "Supply voltage VCC",
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        {
          "name": "Supply voltage VEE",
          "symbol": "VEE",
          "kind": "absolute_maximum",
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          "min": -7,
          "typ": null,
          "max": 0.5,
          "conditions": "printed as 0.5 and -7 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "DC input diode current IIK",
          "symbol": "IIK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "VI < -0.5 V or VI > VCC + 0.5 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "DC switch diode current IOK",
          "symbol": "IOK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "VI < VEE - 0.5 V or VI > VCC + 0.5 V",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "DC switch current",
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          "kind": "absolute_maximum",
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          "min": -25,
          "typ": null,
          "max": 25,
          "conditions": "VI < VEE - 0.5 V or VI > VCC + 0.5 V",
          "source_page": 6,
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        },
        {
          "name": "DC VCC or ground current",
          "symbol": "ICC",
          "kind": "absolute_maximum",
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          "min": -50,
          "typ": null,
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        {
          "name": "DC VEE current",
          "symbol": "IEE",
          "kind": "absolute_maximum",
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          "min": -20,
          "typ": null,
          "max": null,
          "conditions": "single printed value -20 mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Logic control input voltage (EN, Ax, SELx)",
          "symbol": "VSEL, VEN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 6,
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        },
        {
          "name": "Maximum junction temperature",
          "symbol": "TJMAX",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
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        },
        {
          "name": "Maximum lead temperature, soldering",
          "symbol": "TLMAX",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "soldering, 10 s",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 6,
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        },
        {
          "name": "High-level input voltage (min)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2 V; TA = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage (min)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.15,
          "typ": null,
          "max": null,
          "conditions": "VCC = 4.5 V; TA = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage (min)",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.2,
          "typ": null,
          "max": null,
          "conditions": "VCC = 6 V; TA = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage (max)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VCC = 2 V; TA = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage (max)",
          "symbol": "VIL",
          "kind": "electrical",
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          "conditions": "VCC = 4.5 V; TA = 25°C",
          "source_page": 8,
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        },
        {
          "name": "Low-level input voltage (max)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.8,
          "conditions": "VCC = 6 V; TA = 25°C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "On-state resistance",
          "symbol": "rON",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 70,
          "max": 160,
          "conditions": "IO = 1 mA; VIS = VCC or VEE; VI = VIL or VIH; VEE = 0 V, VCC = 4.5 V; TA = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "On-state resistance",
          "symbol": "rON",
          "kind": "electrical",
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          "typ": null,
          "max": 240,
          "conditions": "IO = 1 mA; VIS = VCC or VEE; VI = VIL or VIH; VEE = 0 V, VCC = 4.5 V; TA = -55°C to 125°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "On-state resistance",
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          "max": 140,
          "conditions": "IO = 1 mA; VIS = VCC or VEE; VI = VIL or VIH; VEE = 0 V, VCC = 6 V; TA = 25°C",
          "source_page": 9,
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        },
        {
          "name": "On-state resistance",
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          "typ": null,
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          "conditions": "IO = 1 mA; VIS = VCC or VEE; VI = VIL or VIH; VEE = 0 V, VCC = 6 V; TA = -55°C to 125°C",
          "source_page": 9,
          "source": "datasheet"
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        {
          "name": "On-state resistance",
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          "typ": 40,
          "max": 120,
          "conditions": "IO = 1 mA; VIS = VCC or VEE; VI = VIL or VIH; VEE = -4.5 V, VCC = 4.5 V; TA = 25°C",
          "source_page": 9,
          "source": "datasheet"
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        {
          "name": "On-state resistance",
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          "min": null,
          "typ": null,
          "max": 180,
          "conditions": "IO = 1 mA; VIS = VCC or VEE; VI = VIL or VIH; VEE = -4.5 V, VCC = 4.5 V; TA = -55°C to 125°C",
          "source_page": 9,
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        {
          "name": "On-state resistance",
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          "typ": 90,
          "max": 180,
          "conditions": "IO = 1 mA; VIS = VCC to VEE; VI = VIL or VIH; VEE = 0 V, VCC = 4.5 V; TA = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "On-state resistance",
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          "typ": null,
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          "conditions": "IO = 1 mA; VIS = VCC to VEE; VI = VIL or VIH; VEE = 0 V, VCC = 4.5 V; TA = -55°C to 125°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "On-state resistance",
          "symbol": "rON",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 80,
          "max": 160,
          "conditions": "IO = 1 mA; VIS = VCC to VEE; VI = VIL or VIH; VEE = 0 V, VCC = 6 V; TA = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "On-state resistance",
          "symbol": "rON",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 45,
          "max": 130,
          "conditions": "IO = 1 mA; VIS = VCC to VEE; VI = VIL or VIH; VEE = -4.5 V, VCC = 4.5 V; TA = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "On-state resistance",
          "symbol": "rON",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 195,
          "conditions": "IO = 1 mA; VIS = VCC to VEE; VI = VIL or VIH; VEE = -4.5 V, VCC = 4.5 V; TA = -55°C to 125°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Maximum on-resistance mismatch between any two channels",
          "symbol": "ΔrON",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VEE = 0 V, VCC = 4.5 V; TA = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Maximum on-resistance mismatch between any two channels",
          "symbol": "ΔrON",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 8.5,
          "conditions": "VEE = 0 V, VCC = 6 V; TA = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Maximum on-resistance mismatch between any two channels",
          "symbol": "ΔrON",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "VEE = -4.5 V, VCC = 4.5 V; TA = 25°C",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Switch on/off leakage current (8-channel)",
          "symbol": "IIZ",
          "kind": "electrical",
          "unit": "µA",
          "min": -0.2,
          "typ": null,
          "max": 0.2,
          "conditions": "Off: VIS = VCC, VOS = VEE or VIS = VEE, VOS = VCC; on: all VIS/VOS combinations; VI = VIL or VIH; VEE = 0 V, VCC = 6 V; TA = 25°C",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Switch on/off leakage current (8-channel)",
          "symbol": "IIZ",
          "kind": "electrical",
          "unit": "µA",
          "min": -2,
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