CY74FCT821CTQCT

{
  "slug": "cy74fct821ctqct",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Flip Flops, QSOP-24-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "logic",
    "cy74fct821ctqct",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cy74fct821ctqct.kicad_sym",
    "cy74fct821ctqct.kicad_mod",
    "cy74fct821ctqct.glb",
    "cy74fct821ctqct.step",
    "cy74fct821ctqct.lbr",
    "docs/hero.png",
    "docs/cy74fct821ctqct-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cy74fct821ctqct-hero.glb",
    "cy74fct821ctqct-hero.overlay.json"
  ],
  "component": {
    "mpn": "CY74FCT821CTQCT",
    "manufacturer": "Texas Instruments",
    "package": "QSOP-24-150mil",
    "pin_count": 24,
    "category": "Logic",
    "subcategory": "Flip Flops",
    "datasheet": "https://www.ti.com/cn/lit/gpn/cy74fct821t",
    "parts": {
      "symbol": "cy74fct821ctqct.kicad_sym",
      "footprint": "cy74fct821ctqct.kicad_mod",
      "model_3d": "cy74fct821ctqct-hero.glb",
      "model_3d_plain": "cy74fct821ctqct.glb",
      "model_3d_step": "cy74fct821ctqct-etched.step",
      "model_3d_step_plain": "cy74fct821ctqct.step",
      "lbr": "cy74fct821ctqct.lbr"
    },
    "distributor_links": {
      "lcsc": "C2873071",
      "digikey": "296-14585-2-ND",
      "mouser": "595-CY74FCT821CTQCT"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T17:07:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-14585-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-CY74FCT821CTQCT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OE",
        "type": "input",
        "description": "Output enable: when OE is high the Y outputs are forced to the high-impedance state, and when OE is low the true register data is present at the Y outputs."
      },
      {
        "number": "2",
        "name": "D0",
        "type": "input",
        "description": "D flip-flop data input 0, captured on the low-to-high transition of CP; the datasheet gives VIH min 2 V and VIL max 0.8 V for inputs."
      },
      {
        "number": "3",
        "name": "D1",
        "type": "input",
        "description": "D flip-flop data input 1, captured on the low-to-high transition of CP; the datasheet gives VIH min 2 V and VIL max 0.8 V for inputs."
      },
      {
        "number": "4",
        "name": "D2",
        "type": "input",
        "description": "D flip-flop data input 2, captured on the low-to-high transition of CP; the datasheet gives VIH min 2 V and VIL max 0.8 V for inputs."
      },
      {
        "number": "5",
        "name": "D3",
        "type": "input",
        "description": "D flip-flop data input 3, captured on the low-to-high transition of CP; the datasheet gives VIH min 2 V and VIL max 0.8 V for inputs."
      },
      {
        "number": "6",
        "name": "D4",
        "type": "input",
        "description": "D flip-flop data input 4, captured on the low-to-high transition of CP; the datasheet gives VIH min 2 V and VIL max 0.8 V for inputs."
      },
      {
        "number": "7",
        "name": "D5",
        "type": "input",
        "description": "D flip-flop data input 5, captured on the low-to-high transition of CP; the datasheet gives VIH min 2 V and VIL max 0.8 V for inputs."
      },
      {
        "number": "8",
        "name": "D6",
        "type": "input",
        "description": "D flip-flop data input 6, captured on the low-to-high transition of CP; the datasheet gives VIH min 2 V and VIL max 0.8 V for inputs."
      },
      {
        "number": "9",
        "name": "D7",
        "type": "input",
        "description": "D flip-flop data input 7, captured on the low-to-high transition of CP; the datasheet gives VIH min 2 V and VIL max 0.8 V for inputs."
      },
      {
        "number": "10",
        "name": "D8",
        "type": "input",
        "description": "D flip-flop data input 8, captured on the low-to-high transition of CP; the datasheet gives VIH min 2 V and VIL max 0.8 V for inputs."
      },
      {
        "number": "11",
        "name": "D9",
        "type": "input",
        "description": "D flip-flop data input 9, captured on the low-to-high transition of CP; the datasheet gives VIH min 2 V and VIL max 0.8 V for inputs."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "13",
        "name": "CP",
        "type": "input",
        "description": "Clock pulse for the register: data is entered into the register on the low-to-high clock transition; CT minimum pulse duration is 6 ns."
      },
      {
        "number": "14",
        "name": "Y9",
        "type": "tri_state",
        "description": "Register 3-state output 9, high-impedance when OE is high."
      },
      {
        "number": "15",
        "name": "Y8",
        "type": "tri_state",
        "description": "Register 3-state output 8, high-impedance when OE is high."
      },
      {
        "number": "16",
        "name": "Y7",
        "type": "tri_state",
        "description": "Register 3-state output 7, high-impedance when OE is high."
      },
      {
        "number": "17",
        "name": "Y6",
        "type": "tri_state",
        "description": "Register 3-state output 6, high-impedance when OE is high."
      },
      {
        "number": "18",
        "name": "Y5",
        "type": "tri_state",
        "description": "Register 3-state output 5, high-impedance when OE is high."
      },
      {
        "number": "19",
        "name": "Y4",
        "type": "tri_state",
        "description": "Register 3-state output 4, high-impedance when OE is high."
      },
      {
        "number": "20",
        "name": "Y3",
        "type": "tri_state",
        "description": "Register 3-state output 3, high-impedance when OE is high."
      },
      {
        "number": "21",
        "name": "Y2",
        "type": "tri_state",
        "description": "Register 3-state output 2, high-impedance when OE is high."
      },
      {
        "number": "22",
        "name": "Y1",
        "type": "tri_state",
        "description": "Register 3-state output 1, high-impedance when OE is high."
      },
      {
        "number": "23",
        "name": "Y0",
        "type": "tri_state",
        "description": "Register 3-state output 0, high-impedance when OE is high; the datasheet specifies IOL up to 64 mA and IOH up to -32 mA for the outputs."
      },
      {
        "number": "24",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage, 4.75 V minimum to 5.25 V maximum (5 V nominal)."
      }
    ],
    "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: The datasheet's pin description table and switching-table I/O column label CP and Y as 'O' (output).; The pinout is taken from the shared 'P, Q, OR SO PACKAGE (TOP VIEW)' drawing on page 1. The text doe; The datasheet gives no per-pin electrical limits for D0-D9 beyond the device-wide VIH/VIL and the se"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0775,
        "at": "2026-10-08T17:07:12"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/cy74fct821t",
        "pages": 14,
        "sha256": "5826866e972c5a41",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "cy74fct821ctqct.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.65,
          1.72
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d2244e3f2eff53b6985f22b8c8a44bb319a1973a6a440b2597d6d67813b09338",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cy74fct821ctqct-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          8.65,
          1.72
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4672061ef5cde2d3b6f6b63e43c6c3d621e7805cc3ab61b434017eb3cf999fb0",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}