TC74HC373APF

{
  "schema_version": 1,
  "type": "component",
  "slug": "tc74hc373apf",
  "title": "TC74HC373APF",
  "brief": "TOSHIBA Latches, DIP-20. 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",
    "logic ics",
    "tc74hc373apf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TC74HC373APF",
    "manufacturer": "TOSHIBA",
    "package": "DIP-20",
    "pin_count": 20,
    "category": "Logic ICs",
    "subcategory": "Latches",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e9d28a65c9653f8e576a185195cbc26c.pdf",
    "parts": {
      "symbol": "tc74hc373apf.kicad_sym",
      "footprint": "tc74hc373apf.kicad_mod",
      "model_3d": "tc74hc373apf-hero.glb",
      "model_3d_plain": "tc74hc373apf-etched.glb",
      "model_3d_step": "tc74hc373apf-etched.step",
      "model_3d_step_plain": "tc74hc373apf.step",
      "lbr": "tc74hc373apf.lbr"
    },
    "distributor_links": {
      "lcsc": "C1547795",
      "digikey": "TC74HC373APF-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-29T00:18:53Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "TC74HC373APF-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OE",
        "type": "input",
        "description": "Active-low output enable input; when high, the eight outputs are in a high-impedance state."
      },
      {
        "number": "2",
        "name": "Q0",
        "type": "tri_state",
        "description": "3-state latch output 0, high impedance when OE is high."
      },
      {
        "number": "3",
        "name": "D0",
        "type": "input",
        "description": "Data input 0 to the D-type latch."
      },
      {
        "number": "4",
        "name": "D1",
        "type": "input",
        "description": "Data input 1 to the D-type latch."
      },
      {
        "number": "5",
        "name": "Q1",
        "type": "tri_state",
        "description": "3-state latch output 1, high impedance when OE is high."
      },
      {
        "number": "6",
        "name": "Q2",
        "type": "tri_state",
        "description": "3-state latch output 2, high impedance when OE is high."
      },
      {
        "number": "7",
        "name": "D2",
        "type": "input",
        "description": "Data input 2 to the D-type latch."
      },
      {
        "number": "8",
        "name": "D3",
        "type": "input",
        "description": "Data input 3 to the D-type latch."
      },
      {
        "number": "9",
        "name": "Q3",
        "type": "tri_state",
        "description": "3-state latch output 3, high impedance when OE is high."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin; unused inputs must be tied to VCC or GND."
      },
      {
        "number": "11",
        "name": "LE",
        "type": "input",
        "description": "Latch enable input; outputs follow D when high and are latched when LE goes low."
      },
      {
        "number": "12",
        "name": "Q4",
        "type": "tri_state",
        "description": "3-state latch output 4, high impedance when OE is high."
      },
      {
        "number": "13",
        "name": "D4",
        "type": "input",
        "description": "Data input 4 to the D-type latch."
      },
      {
        "number": "14",
        "name": "D5",
        "type": "input",
        "description": "Data input 5 to the D-type latch."
      },
      {
        "number": "15",
        "name": "Q5",
        "type": "tri_state",
        "description": "3-state latch output 5, high impedance when OE is high."
      },
      {
        "number": "16",
        "name": "Q6",
        "type": "tri_state",
        "description": "3-state latch output 6, high impedance when OE is high."
      },
      {
        "number": "17",
        "name": "D6",
        "type": "input",
        "description": "Data input 6 to the D-type latch."
      },
      {
        "number": "18",
        "name": "D7",
        "type": "input",
        "description": "Data input 7 to the D-type latch."
      },
      {
        "number": "19",
        "name": "Q7",
        "type": "tri_state",
        "description": "3-state latch output 7, high impedance when OE is high."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage pin, operating range 2 to 6 V (absolute maximum -0.5 to 7 V)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: MPN suffix 'APF' is ambiguous: the datasheet covers TC74HC373AP (DIP20-P-300-2.54A) and TC74HC373AF ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 8,
        "cost_usd": 0.2723,
        "at": "2026-10-29T00:18:41"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e9d28a65c9653f8e576a185195cbc26c.pdf",
        "pages": 8,
        "sha256": "6e03efa865693aad",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tc74hc373apf.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,
          26.162,
          6.98
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ca359c9b9e0ce94efcb6c96866513f659eef6517d629ace3c4a0a779f6fd57bb",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tc74hc373apf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "extents_mm": [
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
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        "sha256": "94c9f7cd91a387a5d0539f66c7b07fe7cbcbae497292d8269ca174d542a9bdcf",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TOSHIBA",
      "Package": "DIP-20",
      "Category": "Logic ICs",
      "Pins": "20"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "6e03efa865693aad62f0c0a70915c4c88e1ff2db55b60116fbed3da510137228",
      "rows": [
        {
          "name": "Supply voltage range",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC input voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "max = VCC + 0.5 V as printed",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC output voltage",
          "symbol": "VOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "max = VCC + 0.5 V as printed",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input diode current",
          "symbol": "IIK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output diode current",
          "symbol": "IOK",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "",
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        },
        {
          "name": "DC output current",
          "symbol": "IOUT",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -35,
          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "DC VCC/ground current",
          "symbol": "ICC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -75,
          "typ": null,
          "max": 75,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 500,
          "conditions": "DIP package; Note 2: 500 mW for Ta = -40 to 65°C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "max = VCC as printed",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "max = VCC as printed",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "Topr",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input rise and fall time",
          "symbol": "tr, tf",
          "kind": "recommended_operating",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": 1000,
          "conditions": "VCC = 2.0 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input rise and fall time",
          "symbol": "tr, tf",
          "kind": "recommended_operating",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": 500,
          "conditions": "VCC = 4.5 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input rise and fall time",
          "symbol": "tr, tf",
          "kind": "recommended_operating",
          "unit": "ns",
          "min": 0,
          "typ": null,
          "max": 400,
          "conditions": "VCC = 6.0 V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 2.0 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.15,
          "typ": null,
          "max": null,
          "conditions": "VCC = 4.5 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.2,
          "typ": null,
          "max": null,
          "conditions": "VCC = 6.0 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VCC = 2.0 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.35,
          "conditions": "VCC = 4.5 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.8,
          "conditions": "VCC = 6.0 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.9,
          "typ": 2,
          "max": null,
          "conditions": "IOH = -20 µA; VIN = VIH or VIL; VCC = 2.0 V; min at Ta = -40 to 85°C, typ at Ta = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.4,
          "typ": 4.5,
          "max": null,
          "conditions": "IOH = -20 µA; VIN = VIH or VIL; VCC = 4.5 V; min at Ta = -40 to 85°C, typ at Ta = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 5.9,
          "typ": 6,
          "max": null,
          "conditions": "IOH = -20 µA; VIN = VIH or VIL; VCC = 6.0 V; min at Ta = -40 to 85°C, typ at Ta = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 4.13,
          "typ": 4.31,
          "max": null,
          "conditions": "IOH = -6 mA; VIN = VIH or VIL; VCC = 4.5 V; min at Ta = -40 to 85°C, typ at Ta = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 5.63,
          "typ": 5.8,
          "max": null,
          "conditions": "IOH = -7.8 mA; VIN = VIH or VIL; VCC = 6.0 V; min at Ta = -40 to 85°C, typ at Ta = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0,
          "max": 0.1,
          "conditions": "IOL = 20 µA; VIN = VIH or VIL; VCC = 2.0 V; max at Ta = -40 to 85°C, typ at Ta = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.17,
          "max": 0.33,
          "conditions": "IOL = 6 mA; VIN = VIH or VIL; VCC = 4.5 V; max at Ta = -40 to 85°C, typ at Ta = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.18,
          "max": 0.33,
          "conditions": "IOL = 7.8 mA; VIN = VIH or VIL; VCC = 6.0 V; max at Ta = -40 to 85°C, typ at Ta = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "3-state output off-state current",
          "symbol": "IOZ",
          "kind": "electrical",
          "unit": "µA",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "VCC = 6.0 V; VIN = VIH or VIL; VOUT = VCC or GND; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "IIN",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VCC = 6.0 V; VIN = VCC or GND; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "VCC = 6.0 V; VIN = VCC or GND; Ta = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "VCC = 6.0 V; VIN = VCC or GND; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum pulse width (LE)",
          "symbol": "tW(H)",
          "kind": "timing",
          "unit": "ns",
          "min": 95,
          "typ": null,
          "max": null,
          "conditions": "input tr = tf = 6 ns; VCC = 2.0 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum pulse width (LE)",
          "symbol": "tW(H)",
          "kind": "timing",
          "unit": "ns",
          "min": 19,
          "typ": null,
          "max": null,
          "conditions": "input tr = tf = 6 ns; VCC = 4.5 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum pulse width (LE)",
          "symbol": "tW(H)",
          "kind": "timing",
          "unit": "ns",
          "min": 16,
          "typ": null,
          "max": null,
          "conditions": "input tr = tf = 6 ns; VCC = 6.0 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum set-up time (Dn)",
          "symbol": "ts",
          "kind": "timing",
          "unit": "ns",
          "min": 65,
          "typ": null,
          "max": null,
          "conditions": "input tr = tf = 6 ns; VCC = 2.0 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum set-up time (Dn)",
          "symbol": "ts",
          "kind": "timing",
          "unit": "ns",
          "min": 13,
          "typ": null,
          "max": null,
          "conditions": "input tr = tf = 6 ns; VCC = 4.5 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum set-up time (Dn)",
          "symbol": "ts",
          "kind": "timing",
          "unit": "ns",
          "min": 11,
          "typ": null,
          "max": null,
          "conditions": "input tr = tf = 6 ns; VCC = 6.0 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum hold time (Dn)",
          "symbol": "th",
          "kind": "timing",
          "unit": "ns",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "input tr = tf = 6 ns; VCC = 2.0 V; Ta = -40 to 85°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output transition time",
          "symbol": "tTLH, tTHL",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 20,
          "max": 75,
          "conditions": "CL = 50 pF; input tr = tf = 6 ns; VCC = 2.0 V; max at Ta = -40 to 85°C, typ at Ta = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
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