FT231XQ-T

{
  "slug": "ft231xq-t",
  "version": "0.1.0",
  "type": "component",
  "description": "FTDI USB ICs, QFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface ics",
    "ft231xq-t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ft231xq-t.kicad_sym",
    "ft231xq-t.kicad_mod",
    "ft231xq-t.glb",
    "ft231xq-t.step",
    "ft231xq-t.lbr",
    "docs/hero.png",
    "docs/ft231xq-t-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ft231xq-t-hero.glb",
    "ft231xq-t-hero.overlay.json",
    "ft231xq-t-etched.glb"
  ],
  "component": {
    "mpn": "FT231XQ-T",
    "manufacturer": "FTDI",
    "package": "QFN-20-EP(4x4)",
    "pin_count": 21,
    "category": "Interface ICs",
    "subcategory": "USB ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/753967eec8834c096bd07c57d21e3542.pdf",
    "parts": {
      "symbol": "ft231xq-t.kicad_sym",
      "footprint": "ft231xq-t.kicad_mod",
      "model_3d": "ft231xq-t-hero.glb",
      "model_3d_plain": "ft231xq-t-etched.glb",
      "model_3d_step": "ft231xq-t-etched.step",
      "model_3d_step_plain": "ft231xq-t.step",
      "lbr": "ft231xq-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C1521552",
      "digikey": "768-1155-ND",
      "mouser": "895-FT231XQ-T"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T16:18:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "768-1155-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "895-FT231XQ-T",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RXD",
        "type": "input",
        "description": "Receiving asynchronous data input."
      },
      {
        "number": "2",
        "name": "RI#",
        "type": "input",
        "description": "Ring Indicator input for remote wake up."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "0V ground input."
      },
      {
        "number": "4",
        "name": "DSR#",
        "type": "input",
        "description": "Data Set Ready control input / handshake signal."
      },
      {
        "number": "5",
        "name": "DCD#",
        "type": "input",
        "description": "Data Carrier Detect control input."
      },
      {
        "number": "6",
        "name": "CTS#",
        "type": "input",
        "description": "Clear To Send control input / handshake signal."
      },
      {
        "number": "7",
        "name": "CBUS2",
        "type": "bidirectional",
        "description": "Configurable CBUS I/O pin whose function is set in the MTP memory; default configuration is TXLED#."
      },
      {
        "number": "8",
        "name": "USBDP",
        "type": "bidirectional",
        "description": "USB Data Signal Plus."
      },
      {
        "number": "9",
        "name": "USBDM",
        "type": "bidirectional",
        "description": "USB Data Signal Minus."
      },
      {
        "number": "10",
        "name": "3V3OUT",
        "type": "power_out",
        "description": "3V3 output at 50mA that may be used to power VCCIO; when VCC is 3V3 this pin is an input and should be connected to pin 12."
      },
      {
        "number": "11",
        "name": "RESET#",
        "type": "input",
        "description": "Reset input (active low)."
      },
      {
        "number": "12",
        "name": "VCC",
        "type": "power_in",
        "description": "5 V or 3V3 supply to the IC; if VCC is 3V3 then 3V3OUT must also be driven with 3V3."
      },
      {
        "number": "13",
        "name": "GND",
        "type": "power_in",
        "description": "0V ground input."
      },
      {
        "number": "14",
        "name": "CBUS1",
        "type": "bidirectional",
        "description": "Configurable CBUS I/O pin whose function is set in the MTP memory; default configuration is RXLED#."
      },
      {
        "number": "15",
        "name": "CBUS0",
        "type": "bidirectional",
        "description": "Configurable CBUS I/O pin whose function is set in the MTP memory; default configuration is TXDEN."
      },
      {
        "number": "16",
        "name": "CBUS3",
        "type": "bidirectional",
        "description": "Configurable CBUS I/O pin whose function is set in the MTP memory; default configuration is SLEEP#."
      },
      {
        "number": "17",
        "name": "TXD",
        "type": "output",
        "description": "Transmit asynchronous data output."
      },
      {
        "number": "18",
        "name": "DTR#",
        "type": "output",
        "description": "Data Terminal Ready control output / handshake signal."
      },
      {
        "number": "19",
        "name": "RTS#",
        "type": "output",
        "description": "Request to Send control output / handshake signal."
      },
      {
        "number": "20",
        "name": "VCCIO",
        "type": "power_in",
        "description": "1V8 to 3V3 supply for the IO cells."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad under the centre of the package, to be connected to GND."
      }
    ],
    "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: Pin 21 is the exposed centre pad on the QFN-20 base (shown on the symbol, internally connected to gr"
        ],
        "pages_sent": 28,
        "cost_usd": 0.0346,
        "at": "2026-10-28T16:17:58"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/753967eec8834c096bd07c57d21e3542.pdf",
        "pages": 44,
        "sha256": "8999a05c9ad906a0",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ft231xq-t.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "c9476a1612023de37f27b4972110ab6ac6dc0eaf5ac48957a2e1c497650082a5",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ft231xq-t-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "63d34fbcec417e1da45644ab04193ac8d77a0e69dfd6ad85e168fcd2e65b3e6b",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}