DS110DF111SQE

{
  "slug": "ds110df111sqe",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Interface - Specialized, WQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "communication interface chip-uart-485-232",
    "ds110df111sqe",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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  "component": {
    "mpn": "DS110DF111SQE",
    "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/lit/ds/symlink/ds110df111sqe.pdf",
    "parts": {
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      "lbr": "ds110df111sqe.lbr"
    },
    "distributor_links": {
      "lcsc": "C2652889"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T23:47:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "LPF_REF_A",
        "type": "passive",
        "description": "Loop filter connection; place a 22 nF capacitor in series between LPF_CP_A and LPF_REF_A."
      },
      {
        "number": "2",
        "name": "LPF_CP_A",
        "type": "passive",
        "description": "Loop filter connection; place a 22 nF capacitor 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 mode (EEPROM read), 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 and is 3.3 V LVCMOS tolerant; in pin control mode (ENSMB = LOW) it sets the CHA output de-emphasis level."
      },
      {
        "number": "5",
        "name": "SCL/DEMB",
        "type": "bidirectional",
        "description": "SMBus clock input in slave mode (open-drain output in master mode), 3.3 V LVCMOS tolerant; in pin control mode (ENSMB = LOW) it sets the CHB output de-emphasis level."
      },
      {
        "number": "6",
        "name": "TX_DIS/LBK",
        "type": "input",
        "description": "4-level input: in SMBus control mode, HIGH disables the OUTB transmitter and LOW enables OUTA/OUTB; in pin control mode it is LBK, which selects the INA/INB-to-OUTA/OUTB routing."
      },
      {
        "number": "7",
        "name": "OUTA+",
        "type": "output",
        "description": "Non-inverting CML-compatible differential output for channel A; outputs require AC coupling."
      },
      {
        "number": "8",
        "name": "OUTA-",
        "type": "output",
        "description": "Inverting CML-compatible differential output for channel A; outputs require AC coupling."
      },
      {
        "number": "9",
        "name": "VODA/READEN#",
        "type": "input",
        "description": "In SMBus master mode READEN# pulled low starts the EEPROM configuration read (must be tied LOW in slave mode); in pin control mode it is a 4-level input that sets the CHA output launch amplitude."
      },
      {
        "number": "10",
        "name": "ADDR1/VODB/DONE#",
        "type": "bidirectional",
        "description": "Strap input read at power-up to set SMBus address bit 1; in SMBus master mode DONE# is driven low when the EEPROM read completes, and in pin control mode it is a 4-level input that sets the CHB output launch amplitude."
      },
      {
        "number": "11",
        "name": "INB+",
        "type": "input",
        "description": "Non-inverting CML-compatible differential input for channel B with an on-chip 100 Ohm termination; inputs require AC coupling (100 nF recommended)."
      },
      {
        "number": "12",
        "name": "INB-",
        "type": "input",
        "description": "Inverting CML-compatible differential input for channel B with an on-chip 100 Ohm termination; inputs require AC coupling (100 nF recommended)."
      },
      {
        "number": "13",
        "name": "LOS/INT#",
        "type": "output",
        "description": "Open-drain output driven LOW when a valid signal is present on CH A and released on loss of signal; can be redefined as INT# driven LOW when the EOM check falls below the HEO/VEO threshold, and requires an external 3.3 V pull-up."
      },
      {
        "number": "14",
        "name": "REFCLK_IN",
        "type": "input",
        "description": "LVCMOS reference clock input for 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 mode, or 2.5 V ±5% in 2.5 V mode."
      },
      {
        "number": "16",
        "name": "ADDR0/LOCK",
        "type": "bidirectional",
        "description": "Strap input read at power-up to set SMBus address bit 0; also the LOCK output, driven HIGH when CDR lock is attained on the corresponding channel."
      },
      {
        "number": "17",
        "name": "LPF_CP_B",
        "type": "passive",
        "description": "Loop filter connection; place a 22 nF capacitor in series between LPF_CP_B and LPF_REF_B."
      },
      {
        "number": "18",
        "name": "LPF_REF_B",
        "type": "passive",
        "description": "Loop filter connection; place a 22 nF capacitor 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; outputs require AC coupling."
      },
      {
        "number": "20",
        "name": "OUTB+",
        "type": "output",
        "description": "Non-inverting CML-compatible differential output for channel B; outputs require AC coupling."
      },
      {
        "number": "21",
        "name": "VDD",
        "type": "power_in",
        "description": "2.5 V ±5% supply; in 3.3 V mode this pin is the internal regulator output at 2.5 V ±5%."
      },
      {
        "number": "22",
        "name": "VDD",
        "type": "power_in",
        "description": "2.5 V ±5% supply; in 3.3 V mode this pin is the internal regulator output at 2.5 V ±5%."
      },
      {
        "number": "23",
        "name": "INA-",
        "type": "input",
        "description": "Inverting CML-compatible differential input for channel A with an on-chip 100 Ohm termination; inputs require AC coupling (100 nF recommended)."
      },
      {
        "number": "24",
        "name": "INA+",
        "type": "input",
        "description": "Non-inverting CML-compatible differential input for channel A with an on-chip 100 Ohm termination; inputs require AC coupling (100 nF recommended)."
      },
      {
        "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 datasheet lists the differential pairs as ranges (e.g., OUTA± 7, 8; OUTB± 20, 19; INA± 24, 23; I; The table row lists LPF_REF_A with numbers '2, 1'. The assignment (LPF_CP_A = 2, LPF_REF_A = 1) foll; These pins are shared between SMBus, strap, pin-control and indicator functions. The type shown is f",
          "exposed pad 25 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 14,
        "cost_usd": 0.1005,
        "at": "2026-10-30T23:47:17"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ds110df111sqe.pdf",
        "pages": 55,
        "sha256": "aca1fe01fdbc6bf7",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
        "checked": "2026-10-30",
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        "sha256": "eb352b6134c342a16e6fc76e4c31c6f0005cf4395c53199b41ef3d2267ef37ee",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "RTW0024A",
      "source_page": 52,
      "D": {
        "nom_mm": 4.0,
        "range_mm": [
          3.9,
          4.1
        ]
      },
      "E1": {
        "nom_mm": 4.0,
        "range_mm": [
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      },
      "e": {
        "nom_mm": 0.5,
        "range_mm": [
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        ]
      },
      "A": {
        "nom_mm": 0.8,
        "range_mm": [
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      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
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        "reasons": [
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}