FE1.1S-BQFN24BT

{
  "schema_version": 1,
  "type": "component",
  "slug": "fe1-1s-bqfn24bt",
  "title": "FE1.1S-BQFN24BT",
  "brief": "TERMINUS USB HUB Controllers, WQFN-24(4x4). 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",
    "interface",
    "fe1.1s-bqfn24bt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "FE1.1S-BQFN24BT",
    "manufacturer": "TERMINUS",
    "package": "WQFN-24(4x4)",
    "pin_count": 25,
    "category": "Interface",
    "subcategory": "USB HUB Controllers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757049312637530112",
    "parts": {
      "symbol": "fe1-1s-bqfn24bt.kicad_sym",
      "footprint": "fe1-1s-bqfn24bt.kicad_mod",
      "model_3d": "fe1-1s-bqfn24bt-hero.glb",
      "model_3d_plain": "fe1-1s-bqfn24bt-etched.glb",
      "model_3d_step": "fe1-1s-bqfn24bt-etched.step",
      "model_3d_step_plain": "fe1-1s-bqfn24bt.step",
      "lbr": "fe1-1s-bqfn24bt.lbr"
    },
    "distributor_links": {
      "lcsc": "C5370767"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T14:39:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OVCJ",
        "type": "input",
        "description": "Active-low Over Current Sense input from an external current monitor, used for Global Over-Current Protection (Schmitt-trigger, 5V-tolerant)."
      },
      {
        "number": "2",
        "name": "TESTJ/EESDA",
        "type": "bidirectional",
        "description": "Active-low open-drain 3.3V I/O with internal pull-up (4mA sink); tying it low at power-on-reset enters factory test mode, otherwise leave it unconnected or connect it to external EEPROM SDA."
      },
      {
        "number": "3",
        "name": "XOUT",
        "type": "output",
        "description": "12MHz crystal oscillator output; the crystal must be 12MHz ±50ppm, 16pF to 20pF load capacitance, and 50Ω maximum ESR."
      },
      {
        "number": "4",
        "name": "XIN",
        "type": "input",
        "description": "12MHz crystal oscillator input, or external 12MHz clock input, with the same crystal requirements as XOUT."
      },
      {
        "number": "5",
        "name": "DM4",
        "type": "bidirectional",
        "description": "USB D- signal of the 4th downstream facing port, supporting High-, Full- and Low-Speed operation."
      },
      {
        "number": "6",
        "name": "DP4",
        "type": "bidirectional",
        "description": "USB D+ signal of the 4th downstream facing port, supporting High-, Full- and Low-Speed operation."
      },
      {
        "number": "7",
        "name": "DM3",
        "type": "bidirectional",
        "description": "USB D- signal of the 3rd downstream facing port, supporting High-, Full- and Low-Speed operation."
      },
      {
        "number": "8",
        "name": "DP3",
        "type": "bidirectional",
        "description": "USB D+ signal of the 3rd downstream facing port, supporting High-, Full- and Low-Speed operation."
      },
      {
        "number": "9",
        "name": "DM2",
        "type": "bidirectional",
        "description": "USB D- signal of the 2nd downstream facing port, supporting High-, Full- and Low-Speed operation."
      },
      {
        "number": "10",
        "name": "DP2",
        "type": "bidirectional",
        "description": "USB D+ signal of the 2nd downstream facing port, supporting High-, Full- and Low-Speed operation."
      },
      {
        "number": "11",
        "name": "DM1",
        "type": "bidirectional",
        "description": "USB D- signal of the 1st downstream facing port, supporting High-, Full- and Low-Speed operation."
      },
      {
        "number": "12",
        "name": "DP1",
        "type": "bidirectional",
        "description": "USB D+ signal of the 1st downstream facing port, supporting High-, Full- and Low-Speed operation."
      },
      {
        "number": "13",
        "name": "REXT",
        "type": "passive",
        "description": "External bias resistor pin; a 2.7kΩ (±1%) resistor must be connected to VSS to provide the internal bias reference."
      },
      {
        "number": "14",
        "name": "DMU",
        "type": "bidirectional",
        "description": "USB D- signal of the upstream facing port, supporting High- and Full-Speed operation."
      },
      {
        "number": "15",
        "name": "DPU",
        "type": "bidirectional",
        "description": "USB D+ signal of the upstream facing port, supporting High- and Full-Speed operation."
      },
      {
        "number": "16",
        "name": "XRSTJ",
        "type": "input",
        "description": "Active-low external reset; normally pulled up to 3.3V, and a minimum 10µs low pulse resets the chip beyond power-up."
      },
      {
        "number": "17",
        "name": "VBUSM",
        "type": "input",
        "description": "Upstream VBUS monitor; high indicates the host is powered and the hub operates normally, low forces the hub into power-down state."
      },
      {
        "number": "18",
        "name": "BUSJ",
        "type": "input",
        "description": "Power source sense; high means the hub is self-powered and can support high-power downstream devices, low means bus-powered with 100mA presumed per downstream port."
      },
      {
        "number": "19",
        "name": "VDD5",
        "type": "power_in",
        "description": "5V power input for the integrated 5V-to-3.3V regulator, specified at 4.5V to 5.5V; leave as No-Connection if an external 3.3V source is used."
      },
      {
        "number": "20",
        "name": "VD33F",
        "type": "power_out",
        "description": "3.3V filter capacitor connection for the embedded 5V-to-3.3V regulator, or a 3.3V input from an external source (specified at 3.0V to 3.6V)."
      },
      {
        "number": "21",
        "name": "DRV/CHRGEN",
        "type": "bidirectional",
        "description": "During power-on-reset, high enables the battery charging (Charging Hub) function; otherwise it drives the LED control with 24mA drive strength."
      },
      {
        "number": "22",
        "name": "LED1/EESCL",
        "type": "bidirectional",
        "description": "Port 1 and Port 3 connected indicator LED control (joint indicator for all ports when LED2 is high at power-on-reset), also the external EEPROM clock (SCL), 8mA drive."
      },
      {
        "number": "23",
        "name": "LED2/JLEDEN",
        "type": "bidirectional",
        "description": "Port 2 and Port 4 connected indicator LED control; tying it to 3.3V during power-on-reset enables the joint port indicator, 8mA drive."
      },
      {
        "number": "24",
        "name": "PWRJ",
        "type": "output",
        "description": "Active-low open-drain power enable for downstream power switching in ganged mode, used to limit in-rush current or respond to over-current (4mA sink)."
      },
      {
        "number": "25",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground; pin 25 is the underside exposed pad of the WQFN package and must be connected to ground."
      }
    ],
    "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 numbers were taken from the Pin Description Table WQFN column (page 8-10) because the page 6 pin; Pin 20 VD33F is described as both a 3.3V regulator output filter capacitor and a 3.3V external input; Pin 25 is the exposed underbelly pad and is typed as VSS/power_in per the datasheet; the datasheet d",
          "2/25 pins cited to the wrong page (name found elsewhere): ['3:XOUT@p8', '4:XIN@p8']"
        ],
        "pages_sent": 22,
        "cost_usd": 0.0771,
        "at": "2026-10-17T14:38:21"
      },
      "datasheet": {
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        "pages": 22,
        "sha256": "5677873747ef908e",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          4,
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "fe1-1s-bqfn24bt-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1070ae15e2d5acaea5ba9540f78526d85156506dbcc09bf24f01e67a9fab8dff",
        "checked": "2026-10-17",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TERMINUS",
      "Package": "WQFN-24(4x4)",
      "Category": "Interface",
      "Pins": "25"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "5677873747ef908e0ed07a3334254eeaaec7ac1974b4c6e777be11ec72e21b9c",
      "rows": [
        {
          "name": "Storage Temperature",
          "symbol": "TS",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Voltage",
          "symbol": "VDD5",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Voltage",
          "symbol": "VD33",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 4,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "ESD Human Body Mode",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -2000,
          "typ": null,
          "max": 2000,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "ESD Machine Mode",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -200,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "ESD Charged Device Mode",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -500,
          "typ": null,
          "max": 500,
          "conditions": "",
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        },
        {
          "name": "Latch Up",
          "symbol": "",
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          "unit": "mA",
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          "conditions": "",
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        },
        {
          "name": "Operating Temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "Recommended operating range; min/max column placement inferred from two printed values",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Operating Voltage",
          "symbol": "VDD5",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Operating Voltage",
          "symbol": "VD33",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": 3.3,
          "max": 3.6,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "LOW level voltage of digital input",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "HIGH level voltage of digital input",
          "symbol": "VIH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Threshold voltage of digital input",
          "symbol": "VTH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.45,
          "typ": 1.58,
          "max": 1.74,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Low-to-High level of Schmitt-trigger input",
          "symbol": "VT+",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.44,
          "typ": 1.5,
          "max": 1.56,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "High-to-Low level of Schmitt-trigger input",
          "symbol": "VT-",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.89,
          "typ": 0.94,
          "max": 0.99,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "LOW level voltage of digital output",
          "symbol": "VOL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "Single printed value; column placed as maximum by reading of the row",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "HIGH level voltage of digital output",
          "symbol": "VOH",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": null,
          "conditions": "Single printed value; column placed as minimum by reading of the row",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "XIN input capacitance",
          "symbol": "Cin",
          "kind": "recommended_operating",
          "unit": "ρF",
          "min": null,
          "typ": 32,
          "max": null,
          "conditions": "Single printed value; printed unit is 'ρF' as in source",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Internal Pull-Up Resistor Range",
          "symbol": "RPU",
          "kind": "recommended_operating",
          "unit": "KΩ",
          "min": 39,
          "typ": 65,
          "max": 116,
          "conditions": "",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": 25,
          "max": 85,
          "conditions": "Extended range; product BQFN24BT final tested at room temperature, 85°C and -40°C",
          "source_page": 17,
          "source": "datasheet"
        },
        {
          "name": "Minimum reset pulse on XRSTJ",
          "symbol": "",
          "kind": "timing",
          "unit": "µs",
          "min": 10,
          "typ": null,
          "max": null,
          "conditions": "XRSTJ driven low for chip reset after power-up",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "REXT external bias resistor tolerance",
          "symbol": "REXT",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "External 2.7KΩ resistor from REXT to VSS",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Crystal frequency accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -50,
          "typ": null,
          "max": 50,
          "conditions": "12MHz crystal requirement (external crystal)",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Crystal load capacitance",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "pF",
          "min": 16,
          "typ": null,
          "max": 20,
          "conditions": "12MHz crystal requirement (external crystal)",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "Crystal equivalent series resistance",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "12MHz crystal requirement (external crystal), maximum",
          "source_page": 10,
          "source": "datasheet"
        },
        {
          "name": "REXT external bias resistor",
          "symbol": "REXT",
          "kind": "electrical",
          "unit": "KΩ",
          "min": null,
          "typ": 2.7,
          "max": null,
          "conditions": "Nominal value; external resistor to VSS",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Integrated upstream pull-up resistor",
          "symbol": "",
          "kind": "electrical",
          "unit": "KΩ",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "Integrated upstream pull-up, nominal per Features",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Integrated downstream pull-down resistor",
          "symbol": "",
          "kind": "electrical",
          "unit": "KΩ",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "Integrated downstream pull-down, nominal per Features",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
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  "discovery_triggers": [
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  "discovery_pitch": "FE1.1S-BQFN24BT (TERMINUS) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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