DS125DF111SQE

{
  "schema_version": 1,
  "type": "component",
  "slug": "ds125df111sqe",
  "title": "DS125DF111SQE",
  "brief": "Texas Instruments Interface - Specialized, WQFN-24-EP(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",
    "communication interface chip-uart-485-232",
    "ds125df111sqe",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "DS125DF111SQE",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-24-EP(4x4)",
    "pin_count": 25,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Interface - Specialized",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ds125df111",
    "parts": {
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      "footprint": "ds125df111sqe.kicad_mod",
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      "model_3d_step": "ds125df111sqe-etched.step",
      "model_3d_step_plain": "ds125df111sqe.step",
      "lbr": "ds125df111sqe.lbr"
    },
    "distributor_links": {
      "lcsc": "C2652891",
      "digikey": "296-37464-2-ND",
      "mouser": "595-DS125DF111SQE"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T01:37:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-37464-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-DS125DF111SQE",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "LPF_REF_A",
        "type": "bidirectional",
        "description": "Loop filter connection for channel A; a 22 nF ±10% capacitor is placed in series between LPF_CP_A and LPF_REF_A."
      },
      {
        "number": "2",
        "name": "LPF_CP_A",
        "type": "bidirectional",
        "description": "Loop filter connection for channel A; a 22 nF ±10% capacitor is placed in series between LPF_CP_A and LPF_REF_A."
      },
      {
        "number": "3",
        "name": "ENSMB",
        "type": "input",
        "description": "4-level SMBus enable: HIGH selects register access (SMBus slave mode), FLOAT selects SMBus master read from external EEPROM, 20K to GND is reserved, and LOW selects external pin control mode."
      },
      {
        "number": "4",
        "name": "SDA/DEMA",
        "type": "bidirectional",
        "description": "SMBus data input/open-drain output that requires an external pull-up resistor and is 3.3 V LVCMOS tolerant; in pin control mode it sets the CH A output de-emphasis level."
      },
      {
        "number": "5",
        "name": "SCL/DEMB",
        "type": "bidirectional",
        "description": "SMBus clock input in slave mode (open-drain output in master mode) that is 3.3 V LVCMOS tolerant; in pin control mode it sets the CH B output de-emphasis level."
      },
      {
        "number": "6",
        "name": "TX_DIS/LPBK",
        "type": "input",
        "description": "4-level input that disables the OUTB transmitter when HIGH (OUTA enabled, OUTB disabled) and enables OUTA/OUTB when LOW; in pin control mode it selects the loopback routing."
      },
      {
        "number": "7",
        "name": "OUTA+",
        "type": "output",
        "description": "Non-inverting CML-compatible differential output for channel A that requires AC coupling."
      },
      {
        "number": "8",
        "name": "OUTA-",
        "type": "output",
        "description": "Inverting CML-compatible differential output for channel A that requires AC coupling."
      },
      {
        "number": "9",
        "name": "VODA/READEN#",
        "type": "input",
        "description": "LVCMOS input that initiates an SMBus master EEPROM read when pulled low and must be tied to logic 0 in SMBus slave mode; in pin control mode it sets the CH A output launch amplitude."
      },
      {
        "number": "10",
        "name": "ADDR1/VODB/DONE#",
        "type": "bidirectional",
        "description": "LVCMOS pin that sets the SMBus address bit 1 in slave mode, drives DONE# low when the SMBus master EEPROM read completes (VOH referenced to VIN), and sets the CH B output launch amplitude in pin control mode."
      },
      {
        "number": "11",
        "name": "INB+",
        "type": "input",
        "description": "Non-inverting CML differential input for channel B with an on-chip 100 Ω terminating resistor; inputs require AC coupling, with 100 nF capacitors recommended by TI."
      },
      {
        "number": "12",
        "name": "INB-",
        "type": "input",
        "description": "Inverting CML differential input for channel B with an on-chip 100 Ω terminating resistor; inputs require AC coupling, with 100 nF capacitors recommended by TI."
      },
      {
        "number": "13",
        "name": "LOS/INT#",
        "type": "output",
        "description": "Open-drain output that is driven LOW when a valid signal is present on INA and released on loss of signal, requiring an external pull-up (typically 2.5 V or 3.3 V); it can be redefined as INT#."
      },
      {
        "number": "14",
        "name": "REFCLK_IN",
        "type": "input",
        "description": "LVCMOS reference clock input that requires a 25 MHz ±100 ppm clock from an external oscillator."
      },
      {
        "number": "15",
        "name": "VIN",
        "type": "power_in",
        "description": "Regulator input with integrated supply mode control: 3.3 V ±10% in 3.3-V supply mode, or 2.5 V ±5% in 2.5-V mode where it connects directly to the VDD pins."
      },
      {
        "number": "16",
        "name": "ADDR0/LOCK",
        "type": "bidirectional",
        "description": "Strap input read at power-up that sets the SMBus address and changes the LOCK output definition; LOCK is an LVCMOS output with VOH referenced to VIN."
      },
      {
        "number": "17",
        "name": "LPF_CP_B",
        "type": "bidirectional",
        "description": "Loop filter connection for channel B; a 22 nF ±10% capacitor is placed in series between LPF_CP_B and LPF_REF_B."
      },
      {
        "number": "18",
        "name": "LPF_REF_B",
        "type": "bidirectional",
        "description": "Loop filter connection for channel B; a 22 nF ±10% capacitor is placed in series between LPF_CP_B and LPF_REF_B."
      },
      {
        "number": "19",
        "name": "OUTB-",
        "type": "output",
        "description": "Inverting CML-compatible differential output for channel B that requires AC coupling."
      },
      {
        "number": "20",
        "name": "OUTB+",
        "type": "output",
        "description": "Non-inverting CML-compatible differential output for channel B that requires AC coupling."
      },
      {
        "number": "21",
        "name": "VDD",
        "type": "power_in",
        "description": "2.5 V ±5% supply pin; in 3.3-V supply mode it is fed by the internal output regulator and needs only decoupling, while in 2.5-V supply mode it is a 2.5 V ±5% input."
      },
      {
        "number": "22",
        "name": "VDD",
        "type": "power_in",
        "description": "2.5 V ±5% supply pin; in 3.3-V supply mode it is fed by the internal output regulator and needs only decoupling, while in 2.5-V supply mode it is a 2.5 V ±5% input."
      },
      {
        "number": "23",
        "name": "INA-",
        "type": "input",
        "description": "Inverting CML differential input for channel A with an on-chip 100 Ω terminating resistor; inputs require AC coupling, with 100 nF capacitors recommended by TI."
      },
      {
        "number": "24",
        "name": "INA+",
        "type": "input",
        "description": "Non-inverting CML differential input for channel A with an on-chip 100 Ω terminating resistor; inputs require AC coupling, with 100 nF capacitors recommended by TI."
      },
      {
        "number": "25",
        "name": "DAP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 exposed pad is listed in the datasheet as DAP (GND reference) but has no printed numeric pin num; The datasheet lists the differential pairs as OUTA±/OUTB±/INA±/INB± with pin numbers (e.g., OUTA± 7,; ADDR0/LOCK is listed as an input strap (pin table) and as an LVCMOS output (LOCK function); typed as",
          "exposed pad 25 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 15,
        "cost_usd": 0.1201,
        "at": "2026-10-08T01:36:55"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ds125df111",
        "pages": 56,
        "sha256": "8e3182cf3cd5933c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f7d256794c4147daf24dcae0554fae18510315e565ad1e239b475be7fef80d8b",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "ds125df111sqe-etched.step",
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        "sha256": "c088fa46af1046913c4777bcc3f640ce14d920eaa543a9ad436ea224dda75ccd",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "WQFN-24-EP(4x4)",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "25"
    }
  },
  "variants": [],
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  "discovery_triggers": [
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  "discovery_pitch": "DS125DF111SQE (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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