CY74FCT244ATPC

{
  "schema_version": 1,
  "type": "component",
  "slug": "cy74fct244atpc",
  "title": "CY74FCT244ATPC",
  "brief": "Texas Instruments Buffers / Drivers, PDIP-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",
    "cy74fct244atpc",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CY74FCT244ATPC",
    "manufacturer": "Texas Instruments",
    "package": "PDIP-20",
    "pin_count": 20,
    "category": "Logic ICs",
    "subcategory": "Buffers / Drivers",
    "datasheet": "https://www.ti.com/lit/ds/symlink/cy74fct244atpc.pdf",
    "parts": {
      "symbol": "cy74fct244atpc.kicad_sym",
      "footprint": "cy74fct244atpc.kicad_mod",
      "model_3d": "cy74fct244atpc-hero.glb",
      "model_3d_plain": "cy74fct244atpc-etched.glb",
      "model_3d_step": "cy74fct244atpc-etched.step",
      "model_3d_step_plain": "cy74fct244atpc.step",
      "lbr": "cy74fct244atpc.lbr"
    },
    "distributor_links": {
      "lcsc": "C1499638",
      "digikey": "2156-CY74FCT244ATPC-ND",
      "mouser": "595-CY74FCT244ATPC"
    },
    "distributor_check": {
      "checked_at": "2026-10-26T19:05:14Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-CY74FCT244ATPC-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-CY74FCT244ATPC",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OEA",
        "type": "input",
        "description": "Output enable for the A bank, active low; when OEA is high the OA0-OA3 outputs are in the high-impedance state."
      },
      {
        "number": "2",
        "name": "DA0",
        "type": "input",
        "description": "Data input A0 that drives output OA0 (TTL-compatible; unused inputs must be held at VCC or GND)."
      },
      {
        "number": "3",
        "name": "OB0",
        "type": "tri_state",
        "description": "3-state output B0 that follows DB0, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
      },
      {
        "number": "4",
        "name": "DA1",
        "type": "input",
        "description": "Data input A1 that drives output OA1 (TTL-compatible; unused inputs must be held at VCC or GND)."
      },
      {
        "number": "5",
        "name": "OB1",
        "type": "tri_state",
        "description": "3-state output B1 that follows DB1, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
      },
      {
        "number": "6",
        "name": "DA2",
        "type": "input",
        "description": "Data input A2 that drives output OA2 (TTL-compatible; unused inputs must be held at VCC or GND)."
      },
      {
        "number": "7",
        "name": "OB2",
        "type": "tri_state",
        "description": "3-state output B2 that follows DB2, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
      },
      {
        "number": "8",
        "name": "DA3",
        "type": "input",
        "description": "Data input A3 that drives output OA3 (TTL-compatible; unused inputs must be held at VCC or GND)."
      },
      {
        "number": "9",
        "name": "OB3",
        "type": "tri_state",
        "description": "3-state output B3 that follows DB3, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "11",
        "name": "DB3",
        "type": "input",
        "description": "Data input B3 that drives output OB3 (TTL-compatible; unused inputs must be held at VCC or GND)."
      },
      {
        "number": "12",
        "name": "OA3",
        "type": "tri_state",
        "description": "3-state output A3 that follows DA3, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
      },
      {
        "number": "13",
        "name": "DB2",
        "type": "input",
        "description": "Data input B2 that drives output OB2 (TTL-compatible; unused inputs must be held at VCC or GND)."
      },
      {
        "number": "14",
        "name": "OA2",
        "type": "tri_state",
        "description": "3-state output A2 that follows DA2, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
      },
      {
        "number": "15",
        "name": "DB1",
        "type": "input",
        "description": "Data input B1 that drives output OB1 (TTL-compatible; unused inputs must be held at VCC or GND)."
      },
      {
        "number": "16",
        "name": "OA1",
        "type": "tri_state",
        "description": "3-state output A1 that follows DA1, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
      },
      {
        "number": "17",
        "name": "DB0",
        "type": "input",
        "description": "Data input B0 that drives output OB0 (TTL-compatible; unused inputs must be held at VCC or GND)."
      },
      {
        "number": "18",
        "name": "OA0",
        "type": "tri_state",
        "description": "3-state output A0 that follows DA0, with 64-mA sink and 32-mA source output drive for CY74FCT244T."
      },
      {
        "number": "19",
        "name": "OEB",
        "type": "input",
        "description": "Output enable for the B bank, active low; when OEB is high the OB0-OB3 outputs are in the high-impedance state."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.75 V to 5.25 V recommended for CY74FCT244T (absolute maximum -0.5 V 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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pinout drawing on page 1 is labeled for the 'P, Q, or SO' package group. The ordering table list",
          "1/20 pins cited to the wrong page (name found elsewhere): ['20:VCC@p4']"
        ],
        "pages_sent": 22,
        "cost_usd": 0.171,
        "at": "2026-10-26T19:04:57"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/cy74fct244atpc.pdf",
        "pages": 22,
        "sha256": "b3e7a137db22363a",
        "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": "cy74fct244atpc.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
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ca359c9b9e0ce94efcb6c96866513f659eef6517d629ace3c4a0a779f6fd57bb",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cy74fct244atpc-etched.step",
        "role": "eda",
        "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
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1ea713d497a1a8bdc7ba72e75dd10852549e3dc8e6ef06904451ec49534e3b6b",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "PDIP-20",
      "Category": "Logic ICs",
      "Pins": "20"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "b3e7a137db22363a53852e247c0d43a0156ee2d37b612e46c725eb1990d365c9",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.75,
          "typ": 5,
          "max": 5.25,
          "conditions": "CY74FCT244T",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "High-level output current",
          "symbol": "IOH",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": -32,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Low-level output current",
          "symbol": "IOL",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 64,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating free-air temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage range",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "to ground potential",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC input voltage range",
          "symbol": "VI",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC output voltage range",
          "symbol": "VO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC output current",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "maximum sink current/pin",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature range with power applied",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 135,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Package thermal impedance, P package",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 69,
          "max": null,
          "conditions": "P package, JESD 51-7",
          "source_page": 3,
          "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": 5,
          "source": "datasheet"
        },
        {
          "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",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "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",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "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": 5,
          "source": "datasheet"
        },
        {
          "name": "Input hysteresis",
          "symbol": "Vhys",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": null,
          "conditions": "All inputs",
          "source_page": 5,
          "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": 5,
          "source": "datasheet"
        },
        {
          "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": 5,
          "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": 5,
          "source": "datasheet"
        },
        {
          "name": "Off-state output current (high)",
          "symbol": "IOZH",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VCC = 5.25 V, VOUT = 2.7 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Off-state output current (low)",
          "symbol": "IOZL",
          "kind": "electrical",
          "unit": "µA",
          "min": -10,
          "typ": null,
          "max": null,
          "conditions": "VCC = 5.25 V, VOUT = 0.5 V",
          "source_page": 5,
          "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": 5,
          "source": "datasheet"
        },
        {
          "name": "Partial-power-down output current",
          "symbol": "Ioff",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VCC = 0 V, VOUT = 4.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "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": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply current increase per TTL input",
          "symbol": "∆ICC",
          "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": 5,
          "source": "datasheet"
        },
        {
          "name": "Dynamic supply current",
          "symbol": "ICCD",
          "kind": "electrical",
          "unit": "mA/MHz",
          "min": null,
          "typ": 0.06,
          "max": 0.12,
          "conditions": "VCC = 5.25 V, One input switching at 50% duty cycle, Outputs open, OEA = OEB = GND, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, one bit switching, CMOS levels",
          "symbol": "IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.7,
          "max": 1.4,
          "conditions": "VCC = 5.25 V, one bit at f1 = 10 MHz, 50% duty cycle, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V, Outputs open, OEA = OEB = GND",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, one bit switching, TTL levels",
          "symbol": "IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1,
          "max": 2.4,
          "conditions": "VCC = 5.25 V, one bit at f1 = 10 MHz, 50% duty cycle, VIN = 3.4 V or GND, Outputs open, OEA = OEB = GND",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, eight bits switching, CMOS levels",
          "symbol": "IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.3,
          "max": 2.6,
          "conditions": "VCC = 5.25 V, eight bits at f1 = 2.5 MHz, 50% duty cycle, VIN = 0.2 V or VIN ≥ VCC – 0.2 V, Outputs open, OEA = OEB = GND",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, eight bits switching, TTL levels",
          "symbol": "IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.3,
          "max": 10.6,
          "conditions": "VCC = 5.25 V, eight bits at f1 = 2.5 MHz, 50% duty cycle, VIN = 3.4 V or GND, Outputs open, OEA = OEB = GND",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay, D to O (low-to-high)",
          "symbol": "tPLH",
          "kind": "timing",
          "unit": "ns",
          "min": 1.5,
          "typ": null,
          "max": 4.6,
          "conditions": "CY74FCT244AT, D to O",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Propagation delay, D to O (high-to-low)",
          "symbol": "tPHL",
          "kind": "timing",
          "unit": "ns",
          "min": 1.5,
          "typ": null,
          "max": 4.6,
          "conditions": "CY74FCT244AT, D to O",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output enable time to high level",
          "symbol": "tPZH",
          "kind": "timing",
          "unit": "ns",
          "min": 1.5,
          "typ": null,
          "max": 6.2,
          "conditions": "CY74FCT244AT, OE to O",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output enable time to low level",
          "symbol": "tPZL",
          "kind": "timing",
          "unit": "ns",
          "min": 1.5,
          "typ": null,
          "max": 6.2,
          "conditions": "CY74FCT244AT, OE to O",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output disable time from high level",
          "symbol": "tPHZ",
          "kind": "timing",
          "unit": "ns",
          "min": 1.5,
          "typ": null,
          "max": 5.6,
          "conditions": "CY74FCT244AT, OE to O",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output disable time from low level",
          "symbol": "tPLZ",
          "kind": "timing",
          "unit": "ns",
          "min": 1.5,
          "typ": null,
          "max": 5.6,
          "conditions": "CY74FCT244AT, OE to O",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input capacitance",
          "symbol": "Ci",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output capacitance",
          "symbol": "Co",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 9,
          "max": 12,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cy74fct244atpc"
  ],
  "discovery_pitch": "CY74FCT244ATPC (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cy74fct244atpc.kicad_sym",
    "cy74fct244atpc.kicad_mod",
    "cy74fct244atpc.glb",
    "cy74fct244atpc.step",
    "cy74fct244atpc.lbr",
    "docs/hero.png",
    "docs/cy74fct244atpc-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cy74fct244atpc-hero.glb",
    "cy74fct244atpc-hero.overlay.json",
    "cy74fct244atpc-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}