74VHC161FT

{
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  "type": "component",
  "slug": "74vhc161ft",
  "title": "74VHC161FT",
  "brief": "TOSHIBA Counters, Dividers, TSSOP16B. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "74VHC161FT",
    "manufacturer": "TOSHIBA",
    "package": "TSSOP16B",
    "pin_count": 16,
    "category": "Logic",
    "subcategory": "Counters, Dividers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602986410269945856",
    "parts": {
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      "model_3d_step": "74vhc161ft-etched.step",
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      "lbr": "74vhc161ft.lbr"
    },
    "distributor_links": {
      "lcsc": "C7421276"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T16:25:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CLR",
        "type": "input",
        "description": "Active-low clear input that clears the counter asynchronously on the 74VHC161FT; accepts 0 to 5.5 V regardless of supply."
      },
      {
        "number": "2",
        "name": "CK",
        "type": "input",
        "description": "Clock input, active on the rising edge, with presetting synchronous to the rising edge of CK."
      },
      {
        "number": "3",
        "name": "A",
        "type": "input",
        "description": "Preset data input A (logic level loaded into QA when LOAD is low), 0 to 5.5 V input range."
      },
      {
        "number": "4",
        "name": "B",
        "type": "input",
        "description": "Preset data input B (logic level loaded into QB when LOAD is low), 0 to 5.5 V input range."
      },
      {
        "number": "5",
        "name": "C",
        "type": "input",
        "description": "Preset data input C (logic level loaded into QC when LOAD is low), 0 to 5.5 V input range."
      },
      {
        "number": "6",
        "name": "D",
        "type": "input",
        "description": "Preset data input D (logic level loaded into QD when LOAD is low), 0 to 5.5 V input range."
      },
      {
        "number": "7",
        "name": "ENP",
        "type": "input",
        "description": "Count enable input P, used with ENT to enable easy cascading of counters."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin (0 V)."
      },
      {
        "number": "9",
        "name": "LOAD",
        "type": "input",
        "description": "Active-low synchronous load input that presets the counter from A-D on the rising edge of CK."
      },
      {
        "number": "10",
        "name": "ENT",
        "type": "input",
        "description": "Count enable input T, which also gates the carry output (Carry = ENT·QA·QB·QC·QD) for cascading."
      },
      {
        "number": "11",
        "name": "QD",
        "type": "output",
        "description": "Counter output QD, the most significant bit of the 4-bit binary counter."
      },
      {
        "number": "12",
        "name": "QC",
        "type": "output",
        "description": "Counter output QC of the 4-bit binary counter."
      },
      {
        "number": "13",
        "name": "QB",
        "type": "output",
        "description": "Counter output QB of the 4-bit binary counter."
      },
      {
        "number": "14",
        "name": "QA",
        "type": "output",
        "description": "Counter output QA, the least significant bit of the 4-bit binary counter."
      },
      {
        "number": "15",
        "name": "Carry Output",
        "type": "output",
        "description": "Carry output (Carry = ENT·QA·QB·QC·QD) provided for cascading counters without external gates."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage pin, operating range 2.0 V to 5.5 V (absolute maximum -0.5 to 7.0 V)."
      }
    ],
    "provenance": {
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin 11 is printed as 'QD' in the pin diagram; the function descriptions for A-D, ENP, ENT and output",
          "vision extraction: provenance cannot be text-verified; needs consensus"
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        "cost_usd": 0.3454,
        "at": "2026-10-17T16:22:15"
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      "pins": {
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        "described": 16,
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  "metadata": {
    "specs": {
      "Manufacturer": "TOSHIBA",
      "Package": "TSSOP16B",
      "Category": "Logic",
      "Pins": "16"
    },
    "characteristics": {
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          "name": "VCC/ground current",
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        {
          "name": "Power dissipation",
          "symbol": "PD",
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          "unit": "mW",
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          "conditions": "Ta = -40 to 85 °C",
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        {
          "name": "Storage temperature",
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          "unit": "°C",
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        {
          "name": "Operating temperature",
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          "name": "High-level output voltage",
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          "name": "High-level output voltage",
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          "name": "High-level output voltage",
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          "name": "High-level output voltage",
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          "conditions": "Ta = 25 °C; VCC = 4.5 V; IOH = -8 mA",
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          "name": "Low-level output voltage",
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          "name": "Low-level output voltage",
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          "conditions": "Ta = 25 °C; VCC = 3.0 V; IOL = 4 mA",
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          "name": "Input leakage current",
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          "kind": "electrical",
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          "min": -0.1,
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          "max": 0.1,
          "conditions": "Ta = 25 °C; VIN = 5.5 V or GND; VCC = 0 to 5.5 V",
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          "name": "Quiescent supply current",
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          "max": 4,
          "conditions": "Ta = 25 °C; VIN = VCC or GND; VCC = 5.5 V",
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          "name": "Minimum pulse width (CK)",
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          "min": 5,
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          "conditions": "Ta = 25 °C; VCC = 3.3 ± 0.3 V; Figure 1; tr = tf = 3 ns",
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          "name": "Minimum pulse width (CLR)",
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          "conditions": "Ta = 25 °C; VCC = 5.0 ± 0.5 V; Figure 5; tr = tf = 3 ns",
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          "name": "Minimum removal time (CLR)",
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          "name": "Input capacitance",
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  ],
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  ],
  "discovery_pitch": "74VHC161FT (TOSHIBA) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  },
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    "74vhc161ft.step",
    "74vhc161ft.lbr",
    "docs/hero.png",
    "docs/74vhc161ft-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "74vhc161ft-hero.glb",
    "74vhc161ft-hero.overlay.json",
    "74vhc161ft-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}