CY74FCT373TSOC

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  "type": "component",
  "slug": "cy74fct373tsoc",
  "title": "CY74FCT373TSOC",
  "brief": "Texas Instruments Latches, SOIC-20-300mil. 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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    "logic",
    "cy74fct373tsoc",
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  "component": {
    "mpn": "CY74FCT373TSOC",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-20-300mil",
    "pin_count": 20,
    "category": "Logic",
    "subcategory": "Latches",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cy74fct373t.pdf",
    "parts": {
      "symbol": "cy74fct373tsoc.kicad_sym",
      "footprint": "cy74fct373tsoc.kicad_mod",
      "model_3d": "cy74fct373tsoc-hero.glb",
      "model_3d_plain": "cy74fct373tsoc-etched.glb",
      "model_3d_step": "cy74fct373tsoc-etched.step",
      "model_3d_step_plain": "cy74fct373tsoc.step",
      "lbr": "cy74fct373tsoc.lbr"
    },
    "distributor_links": {
      "lcsc": "C1547873",
      "digikey": "2156-CY74FCT373TSOC-ND",
      "mouser": "595-CY74FCT373TSOC"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T22:44:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-CY74FCT373TSOC-ND",
        "status": "found"
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      "mouser": {
        "pn": "595-CY74FCT373TSOC",
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    },
    "pins": [
      {
        "number": "1",
        "name": "OE",
        "type": "input",
        "description": "Output enable input: when OE is low the bus outputs show the latched data, and when OE is high the outputs are in the high-impedance state."
      },
      {
        "number": "2",
        "name": "O0",
        "type": "tri_state",
        "description": "3-state output 0 of the latch, which is high-impedance when OE is high and drives the bus when OE is low, with a CY74FCT373T rating of 64-mA sink and 32-mA source current."
      },
      {
        "number": "3",
        "name": "D0",
        "type": "input",
        "description": "Data input 0 to the latch, which must meet the setup and hold times relative to the rising edge of LE (setup 2 ns, hold 1.5 ns)."
      },
      {
        "number": "4",
        "name": "D1",
        "type": "input",
        "description": "Data input 1 to the latch, which must meet the setup and hold times relative to the rising edge of LE (setup 2 ns, hold 1.5 ns)."
      },
      {
        "number": "5",
        "name": "O1",
        "type": "tri_state",
        "description": "3-state output 1 of the latch, which is high-impedance when OE is high and drives the bus when OE is low, with a CY74FCT373T rating of 64-mA sink and 32-mA source current."
      },
      {
        "number": "6",
        "name": "O2",
        "type": "tri_state",
        "description": "3-state output 2 of the latch, which is high-impedance when OE is high and drives the bus when OE is low, with a CY74FCT373T rating of 64-mA sink and 32-mA source current."
      },
      {
        "number": "7",
        "name": "D2",
        "type": "input",
        "description": "Data input 2 to the latch, which must meet the setup and hold times relative to the rising edge of LE (setup 2 ns, hold 1.5 ns)."
      },
      {
        "number": "8",
        "name": "D3",
        "type": "input",
        "description": "Data input 3 to the latch, which must meet the setup and hold times relative to the rising edge of LE (setup 2 ns, hold 1.5 ns)."
      },
      {
        "number": "9",
        "name": "O3",
        "type": "tri_state",
        "description": "3-state output 3 of the latch, which is high-impedance when OE is high and drives the bus when OE is low, with a CY74FCT373T rating of 64-mA sink and 32-mA source current."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "11",
        "name": "LE",
        "type": "input",
        "description": "Latch enable input: when LE is high the latches are transparent to the data, and data is latched when LE transitions from high to low."
      },
      {
        "number": "12",
        "name": "O4",
        "type": "tri_state",
        "description": "3-state output 4 of the latch, which is high-impedance when OE is high and drives the bus when OE is low, with a CY74FCT373T rating of 64-mA sink and 32-mA source current."
      },
      {
        "number": "13",
        "name": "D4",
        "type": "input",
        "description": "Data input 4 to the latch, which must meet the setup and hold times relative to the rising edge of LE (setup 2 ns, hold 1.5 ns)."
      },
      {
        "number": "14",
        "name": "D5",
        "type": "input",
        "description": "Data input 5 to the latch, which must meet the setup and hold times relative to the rising edge of LE (setup 2 ns, hold 1.5 ns)."
      },
      {
        "number": "15",
        "name": "O5",
        "type": "tri_state",
        "description": "3-state output 5 of the latch, which is high-impedance when OE is high and drives the bus when OE is low, with a CY74FCT373T rating of 64-mA sink and 32-mA source current."
      },
      {
        "number": "16",
        "name": "O6",
        "type": "tri_state",
        "description": "3-state output 6 of the latch, which is high-impedance when OE is high and drives the bus when OE is low, with a CY74FCT373T rating of 64-mA sink and 32-mA source current."
      },
      {
        "number": "17",
        "name": "D6",
        "type": "input",
        "description": "Data input 6 to the latch, which must meet the setup and hold times relative to the rising edge of LE (setup 2 ns, hold 1.5 ns)."
      },
      {
        "number": "18",
        "name": "D7",
        "type": "input",
        "description": "Data input 7 to the latch, which must meet the setup and hold times relative to the rising edge of LE (setup 2 ns, hold 1.5 ns)."
      },
      {
        "number": "19",
        "name": "O7",
        "type": "tri_state",
        "description": "3-state output 7 of the latch, which is high-impedance when OE is high and drives the bus when OE is low, with a CY74FCT373T rating of 64-mA sink and 32-mA source current."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, recommended range 4.75 V to 5.25 V (nominal 5 V) for the CY74FCT373T."
      }
    ],
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 13,
        "cost_usd": 0.024,
        "at": "2026-11-05T22:44:34"
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        "url": "https://www.ti.com/lit/ds/symlink/cy74fct373t.pdf",
        "pages": 13,
        "sha256": "826e982302a909bc",
        "source_tier": "mfr"
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        "described": 20,
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        "refuses_to_fabricate": true
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  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-20-300mil",
      "Category": "Logic",
      "Pins": "20"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
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          "min": 4.75,
          "typ": 5,
          "max": 5.25,
          "conditions": "",
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          "name": "Low-level output current",
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        {
          "name": "Operating free-air temperature",
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          "name": "DC input voltage range",
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        {
          "name": "DC output current (maximum sink current/pin)",
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        {
          "name": "Ambient temperature range with power applied",
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          "name": "Storage temperature range",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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        {
          "name": "Pulse duration, LE high",
          "symbol": "tw",
          "kind": "timing",
          "unit": "ns",
          "min": 6,
          "typ": null,
          "max": null,
          "conditions": "see Figure 1",
          "source_page": 6,
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        },
        {
          "name": "Setup time, data before LE↑",
          "symbol": "tsu",
          "kind": "timing",
          "unit": "ns",
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          "typ": null,
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          "conditions": "see Figure 1",
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          "name": "Hold time, data after LE↑",
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          "kind": "timing",
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          "conditions": "see Figure 1",
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          "name": "Propagation delay D to O (low-to-high)",
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          "name": "Propagation delay D to O (high-to-low)",
          "symbol": "tPHL",
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          "unit": "ns",
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          "conditions": "see Figure 1",
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          "name": "Propagation delay LE to O (low-to-high)",
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          "name": "Enable time OE to O (high)",
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          "name": "Disable time OE to O (high)",
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          "name": "Disable time OE to O (low)",
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          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": 3.3,
          "max": null,
          "conditions": "VCC = 4.75 V, IOH = -15 mA",
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        {
          "name": "High-level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "VCC = 4.75 V, IOH = -32 mA",
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        {
          "name": "Low-level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.3,
          "max": 0.55,
          "conditions": "VCC = 4.75 V, IOL = 64 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input clamp voltage",
          "symbol": "VIK",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": -0.7,
          "max": -1.2,
          "conditions": "VCC = 4.75 V, IIN = -18 mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input current",
          "symbol": "II",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "VCC = 5.25 V, VIN = VCC",
          "source_page": 4,
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        {
          "name": "High-level input current",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VCC = 5.25 V, VIN = 2.7 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level input current",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VCC = 5.25 V, VIN = 0.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level off-state output current",
          "symbol": "IOZH",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VCC = 5.25 V, VOUT = 2.7 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level off-state output current",
          "symbol": "IOZL",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": -10,
          "conditions": "VCC = 5.25 V, VOUT = 0.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Short-circuit output current",
          "symbol": "IOS",
          "kind": "electrical",
          "unit": "mA",
          "min": -60,
          "typ": -120,
          "max": -225,
          "conditions": "VCC = 5.25 V, VOUT = 0 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power-off leakage current",
          "symbol": "Ioff",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VCC = 0 V, VOUT = 4.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Quiescent supply current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.1,
          "max": 0.2,
          "conditions": "VCC = 5.25 V, VIN ≤ 0.2 V, VIN ≥ VCC – 0.2 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply current per TTL high input",
          "symbol": "ΔICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.5,
          "max": 2,
          "conditions": "VCC = 5.25 V, VIN = 3.4 V, f1 = 0, Outputs open",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Dynamic current per input transition",
          "symbol": "ICCD",
          "kind": "electrical",
          "unit": "mA/MHz",
          "min": null,
          "typ": 0.06,
          "max": 0.12,
          "conditions": "VCC = 5.25 V, Outputs open, one input switching at 50% duty cycle, OE = GND",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, one bit switching at 10 MHz",
          "symbol": "IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.7,
          "max": 1.4,
          "conditions": "VCC = 5.25 V, one bit switching at f1 = 10 MHz, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, one bit switching at 50% duty cycle",
          "symbol": "IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1,
          "max": 2.4,
          "conditions": "VCC = 5.25 V, Outputs open, one bit at 50% duty cycle, VIN = 3.4 V or GND, OE = GND, LE = VCC",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, eight bits switching at 2.5 MHz",
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          "max": 2.6,
          "conditions": "VCC = 5.25 V, eight bits switching at f1 = 2.5 MHz, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, eight bits switching at 2.5 MHz, TTL inputs",
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          "kind": "electrical",
          "unit": "mA",
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          "typ": 3.3,
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