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Ray Set visibility: public ec32ac3 3h ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "cy74fct646atsoct",
  "title": "CY74FCT646ATSOCT",
  "brief": "Texas Instruments Buffers, Drivers, Receivers, Transceivers, SOIC-24-300mil. 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",
    "cy74fct646atsoct",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CY74FCT646ATSOCT",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-24-300mil",
    "pin_count": 24,
    "category": "Logic",
    "subcategory": "Buffers, Drivers, Receivers, Transceivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/cy74fct646t",
    "parts": {
      "symbol": "cy74fct646atsoct.kicad_sym",
      "footprint": "cy74fct646atsoct.kicad_mod",
      "model_3d": "cy74fct646atsoct-hero.glb",
      "model_3d_plain": "cy74fct646atsoct-etched.glb",
      "model_3d_step": "cy74fct646atsoct-etched.step",
      "model_3d_step_plain": "cy74fct646atsoct.step",
      "lbr": "cy74fct646atsoct.lbr"
    },
    "distributor_links": {
      "lcsc": "C2878410",
      "digikey": "296-23217-2-ND",
      "mouser": "595-CY74FCT646ATSOCT"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T23:18:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-23217-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-CY74FCT646ATSOCT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CPAB",
        "type": "input",
        "description": "Clock-pulse input for the A-to-B register; data on the bus is stored on each low-to-high transition."
      },
      {
        "number": "2",
        "name": "SAB",
        "type": "input",
        "description": "Output data-source-select input that multiplexes stored and real-time data for the A-to-B path."
      },
      {
        "number": "3",
        "name": "DIR",
        "type": "input",
        "description": "Direction input that determines which bus receives data when G is low."
      },
      {
        "number": "4",
        "name": "A1",
        "type": "bidirectional",
        "description": "Data register A input and data register B output for bus A, bit 1."
      },
      {
        "number": "5",
        "name": "A2",
        "type": "bidirectional",
        "description": "Data register A input and data register B output for bus A, bit 2."
      },
      {
        "number": "6",
        "name": "A3",
        "type": "bidirectional",
        "description": "Data register A input and data register B output for bus A, bit 3."
      },
      {
        "number": "7",
        "name": "A4",
        "type": "bidirectional",
        "description": "Data register A input and data register B output for bus A, bit 4."
      },
      {
        "number": "8",
        "name": "A5",
        "type": "bidirectional",
        "description": "Data register A input and data register B output for bus A, bit 5."
      },
      {
        "number": "9",
        "name": "A6",
        "type": "bidirectional",
        "description": "Data register A input and data register B output for bus A, bit 6."
      },
      {
        "number": "10",
        "name": "A7",
        "type": "bidirectional",
        "description": "Data register A input and data register B output for bus A, bit 7."
      },
      {
        "number": "11",
        "name": "A8",
        "type": "bidirectional",
        "description": "Data register A input and data register B output for bus A, bit 8."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "13",
        "name": "B8",
        "type": "bidirectional",
        "description": "Data register B input and data register A output for bus B, bit 8."
      },
      {
        "number": "14",
        "name": "B7",
        "type": "bidirectional",
        "description": "Data register B input and data register A output for bus B, bit 7."
      },
      {
        "number": "15",
        "name": "B6",
        "type": "bidirectional",
        "description": "Data register B input and data register A output for bus B, bit 6."
      },
      {
        "number": "16",
        "name": "B5",
        "type": "bidirectional",
        "description": "Data register B input and data register A output for bus B, bit 5."
      },
      {
        "number": "17",
        "name": "B4",
        "type": "bidirectional",
        "description": "Data register B input and data register A output for bus B, bit 4."
      },
      {
        "number": "18",
        "name": "B3",
        "type": "bidirectional",
        "description": "Data register B input and data register A output for bus B, bit 3."
      },
      {
        "number": "19",
        "name": "B2",
        "type": "bidirectional",
        "description": "Data register B input and data register A output for bus B, bit 2."
      },
      {
        "number": "20",
        "name": "B1",
        "type": "bidirectional",
        "description": "Data register B input and data register A output for bus B, bit 1."
      },
      {
        "number": "21",
        "name": "G",
        "type": "input",
        "description": "Output-enable input; when high the device is in isolation mode and the data outputs are disabled."
      },
      {
        "number": "22",
        "name": "SBA",
        "type": "input",
        "description": "Output data-source-select input that multiplexes stored and real-time data for the B-to-A path."
      },
      {
        "number": "23",
        "name": "CPBA",
        "type": "input",
        "description": "Clock-pulse input for the B-to-A register; data on the bus is stored on each low-to-high transition."
      },
      {
        "number": "24",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; 4.75 V to 5.25 V is recommended for the CY74FCT646T."
      }
    ],
    "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: Pinout taken from the Q/SO pin diagram on page 1 and cross-checked against the function table (page ",
          "1/24 pins cited to the wrong page (name found elsewhere): ['24:VCC@p5']"
        ],
        "pages_sent": 15,
        "cost_usd": 0.0281,
        "at": "2026-11-05T23:18:30"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/cy74fct646t",
        "pages": 15,
        "sha256": "13b3f72899297c10",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "cy74fct646atsoct.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          15.4,
          2.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4b0d20f82f5b0124fecfe11c941274a3c865a30f7baee8b8fadd7df55972d4cd",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cy74fct646atsoct-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          10.3,
          15.4,
          2.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e1f17921806763bf876f39afd2b04ae7077070805706bbc1a71431a288f1951e",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-24-300mil",
      "Category": "Logic",
      "Pins": "24"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "13b3f72899297c10e688ce8f5c0cece2d917b696110a40332942c8089ea2c4e6",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.75,
          "typ": 5,
          "max": 5.25,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-level input voltage",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level input voltage",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-level output current",
          "symbol": "IOH",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": -32,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-level output current",
          "symbol": "IOL",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 64,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating free-air temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage range to ground potential",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "DC input voltage range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "DC output voltage range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "DC output current (maximum sink current/pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "maximum sink current/pin",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature range with power applied",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 135,
          "conditions": "with power applied",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "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": 6,
          "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": 6,
          "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": 6,
          "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": 6,
          "source": "datasheet"
        },
        {
          "name": "Input hysteresis",
          "symbol": "Vhys",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": null,
          "conditions": "All inputs",
          "source_page": 6,
          "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": 6,
          "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": 6,
          "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": 6,
          "source": "datasheet"
        },
        {
          "name": "Off-state output current, high-level voltage applied",
          "symbol": "IOZH",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VCC = 5.25 V, VOUT = 2.7 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Off-state output current, low-level voltage applied",
          "symbol": "IOZL",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": -10,
          "conditions": "VCC = 5.25 V, VOUT = 0.5 V",
          "source_page": 6,
          "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": 6,
          "source": "datasheet"
        },
        {
          "name": "Power-off output current",
          "symbol": "Ioff",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VCC = 0 V, VOUT = 4.5 V",
          "source_page": 6,
          "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 or VIN ≥ VCC – 0.2 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Supply current per TTL high 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": 6,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, one bit switching at f1 = 5 MHz",
          "symbol": "IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.7,
          "max": 1.4,
          "conditions": "VCC = 5.25 V, outputs open, G = DIR = GND, SAB = SBA = GND, one bit switching at f1 = 5 MHz, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, one bit at 50% duty cycle, f0 = 10 MHz",
          "symbol": "IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.2,
          "max": 3.4,
          "conditions": "VCC = 5.25 V, f0 = 10 MHz, outputs open, one bit at 50% duty cycle, VIN = 3.4 V or GND",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, eight bits switching at f1 = 5 MHz",
          "symbol": "IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.8,
          "max": 5.6,
          "conditions": "VCC = 5.25 V, outputs open, G = DIR = GND, SAB = SBA = GND, eight bits switching at f1 = 5 MHz, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V; example of ICC formula",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Total supply current, eight bits at 50% duty cycle",
          "symbol": "IC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5.1,
          "max": 14.6,
          "conditions": "VCC = 5.25 V, outputs open, G = DIR = GND, SAB = SBA = GND, eight bits at 50% duty cycle, VIN = 3.4 V or GND; example of ICC formula",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input capacitance",
          "symbol": "Ci",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 6,
          "max": 10,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output capacitance",
          "symbol": "Co",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 8,
          "max": 12,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Pulse duration",
          "symbol": "tw",
          "kind": "timing",
          "unit": "ns",
          "min": 5,
          "typ": null,
          "max": null,
          "conditions": "see Figure 2",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Setup time, data before CPAB↑ or CPBA↑",
          "symbol": "tsu",
          "kind": "timing",
          "unit": "ns",
          "min": 2,
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