DS90UB927QSQE

{
  "slug": "ds90ub927qsqe",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Serializers / Deserializers, WQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "communication interface chip-uart-485-232",
    "ds90ub927qsqe",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "README.md",
    "ds90ub927qsqe.kicad_sym",
    "ds90ub927qsqe.kicad_mod",
    "ds90ub927qsqe.glb",
    "ds90ub927qsqe.step",
    "ds90ub927qsqe.lbr",
    "docs/hero.png",
    "docs/ds90ub927qsqe-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ds90ub927qsqe-hero.glb",
    "ds90ub927qsqe-hero.overlay.json"
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  "component": {
    "mpn": "DS90UB927QSQE",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-40-EP(6x6)",
    "pin_count": 41,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Serializers / Deserializers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ds90ub927q-q1",
    "parts": {
      "symbol": "ds90ub927qsqe.kicad_sym",
      "footprint": "ds90ub927qsqe.kicad_mod",
      "model_3d": "ds90ub927qsqe-hero.glb",
      "model_3d_plain": "ds90ub927qsqe.glb",
      "model_3d_step": "ds90ub927qsqe-etched.step",
      "model_3d_step_plain": "ds90ub927qsqe.step",
      "lbr": "ds90ub927qsqe.lbr"
    },
    "distributor_links": {
      "lcsc": "C2672701"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T23:00:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "I2S_WC",
        "type": "input",
        "description": "I2S word clock and bit clock input with internal pulldown, LVCMOS levels referenced to VDDIO; shared with GPIO_REG7."
      },
      {
        "number": "2",
        "name": "I2S_CLK",
        "type": "input",
        "description": "I2S bit clock input with internal pulldown, LVCMOS levels referenced to VDDIO; shared with GPIO_REG8."
      },
      {
        "number": "3",
        "name": "I2S_DA",
        "type": "input",
        "description": "I2S digital audio data input with internal pulldown, LVCMOS levels referenced to VDDIO; shared with GPIO_REG6."
      },
      {
        "number": "4",
        "name": "I2S_DB",
        "type": "input",
        "description": "I2S digital audio data input with internal pulldown, LVCMOS levels referenced to VDDIO; shared with GPIO_REG5."
      },
      {
        "number": "5",
        "name": "I2S_DC",
        "type": "input",
        "description": "I2S digital audio data input with internal pulldown, LVCMOS levels referenced to VDDIO; shared with GPIO2."
      },
      {
        "number": "6",
        "name": "I2S_DD",
        "type": "input",
        "description": "I2S digital audio data input with internal pulldown, LVCMOS levels referenced to VDDIO; shared with GPIO3."
      },
      {
        "number": "7",
        "name": "VDDIO",
        "type": "power_in",
        "description": "LVCMOS I/O power, 1.8 V ±5% or 3.0 V to 3.6 V; each VDDIO pin requires a 4.7-µF capacitor to GND."
      },
      {
        "number": "8",
        "name": "CAPL12",
        "type": "passive",
        "description": "Decoupling capacitor connection for the on-chip 1.2 V regulator; requires 4.7-µF decoupling capacitor(s) to GND."
      },
      {
        "number": "9",
        "name": "SCL",
        "type": "bidirectional",
        "description": "I2C clock input/output, open drain; must have an external pullup to VDD33 (recommended 4.7 kΩ) and must not float."
      },
      {
        "number": "10",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C data input/output, open drain; must have an external pullup to VDD33 (recommended 4.7 kΩ) and must not float."
      },
      {
        "number": "11",
        "name": "IDx",
        "type": "passive",
        "description": "I2C address select analog input; connect to an external pullup to VDD33 and a pulldown to GND as a voltage divider, and do not float."
      },
      {
        "number": "12",
        "name": "CAPP12",
        "type": "passive",
        "description": "Decoupling capacitor connection for the on-chip 1.2 V regulator; requires 4.7-µF decoupling capacitor(s) to GND."
      },
      {
        "number": "13",
        "name": "RES0",
        "type": "power_in",
        "description": "Reserved pin; connect to GND."
      },
      {
        "number": "14",
        "name": "CAPHS12",
        "type": "passive",
        "description": "Decoupling capacitor connection for the on-chip 1.2 V regulator; requires a 4.7-µF decoupling capacitor to GND."
      },
      {
        "number": "15",
        "name": "RES1",
        "type": "power_in",
        "description": "Reserved pin; connect to GND."
      },
      {
        "number": "16",
        "name": "DOUT-",
        "type": "output",
        "description": "Inverting FPD-Link III serial output; must be AC-coupled with a 0.1-µF capacitor."
      },
      {
        "number": "17",
        "name": "DOUT+",
        "type": "output",
        "description": "True FPD-Link III serial output; must be AC-coupled with a 0.1-µF capacitor."
      },
      {
        "number": "18",
        "name": "PDB",
        "type": "input",
        "description": "Power-down input with internal pulldown; must be driven or pulled up to VDD33 - high enables the device, low powers it down with driver outputs HIGH and PLL shut down."
      },
      {
        "number": "19",
        "name": "VDD33_A",
        "type": "power_in",
        "description": "Power to the on-chip regulator, 3.0 V to 3.6 V; must be bypassed with a 4.7-µF capacitor to GND and driven to the same potential as VDD33_B."
      },
      {
        "number": "20",
        "name": "CMF",
        "type": "passive",
        "description": "Common mode filter; connect a 0.1-µF capacitor to GND (required)."
      },
      {
        "number": "21",
        "name": "REPEAT",
        "type": "input",
        "description": "Repeater mode select with internal pulldown; low disables repeater mode (default), high enables it, and a 10-kΩ pullup is required if set HIGH."
      },
      {
        "number": "22",
        "name": "BKWD",
        "type": "input",
        "description": "Backward compatible mode select with internal pulldown; low selects DS90UH926/8Q-Q1 (default), high selects DS90UR906/8Q-Q1 or DS90UR916Q, and a 10-kΩ pullup is required if set HIGH."
      },
      {
        "number": "23",
        "name": "MAPSEL",
        "type": "input",
        "description": "FPD-Link input map select with internal pulldown; low places LSBs on RxIN3± (default), high places MSBs on RxIN3±, and a 10-kΩ pullup is required if set HIGH."
      },
      {
        "number": "24",
        "name": "VDDIO",
        "type": "power_in",
        "description": "LVCMOS I/O power, 1.8 V ±5% or 3.0 V to 3.6 V; each VDDIO pin requires a 4.7-µF capacitor to GND."
      },
      {
        "number": "25",
        "name": "LFMODE",
        "type": "input",
        "description": "Low-frequency mode select with internal pulldown; low selects 15 MHz to 85 MHz RxCLKIN (default), high selects 5 MHz to below 15 MHz, and a 10-kΩ pullup is required if set HIGH."
      },
      {
        "number": "26",
        "name": "VDD33_B",
        "type": "power_in",
        "description": "Power to the on-chip regulator, 3.0 V to 3.6 V; must be bypassed with a 4.7-µF capacitor to GND and driven to the same potential as VDD33_A."
      },
      {
        "number": "27",
        "name": "INTB",
        "type": "output",
        "description": "Open-drain interrupt output; high for normal operation, low for an interrupt request, with a recommended 4.7-kΩ pullup to VDDIO that must not float."
      },
      {
        "number": "28",
        "name": "CAPLVD12",
        "type": "passive",
        "description": "Decoupling capacitor connection for the on-chip 1.2 V regulator; requires a 4.7-µF decoupling capacitor to GND."
      },
      {
        "number": "29",
        "name": "RxIN0-",
        "type": "input",
        "description": "Inverting FPD-Link input data pair; requires external 100-Ω differential termination for standard LVDS levels."
      },
      {
        "number": "30",
        "name": "RxIN0+",
        "type": "input",
        "description": "True FPD-Link input data pair; requires external 100-Ω differential termination for standard LVDS levels."
      },
      {
        "number": "31",
        "name": "RxIN1-",
        "type": "input",
        "description": "Inverting FPD-Link input data pair; requires external 100-Ω differential termination for standard LVDS levels."
      },
      {
        "number": "32",
        "name": "RxIN1+",
        "type": "input",
        "description": "True FPD-Link input data pair; requires external 100-Ω differential termination for standard LVDS levels."
      },
      {
        "number": "33",
        "name": "RxIN2-",
        "type": "input",
        "description": "Inverting FPD-Link input data pair; requires external 100-Ω differential termination for standard LVDS levels."
      },
      {
        "number": "34",
        "name": "RxIN2+",
        "type": "input",
        "description": "True FPD-Link input data pair; requires external 100-Ω differential termination for standard LVDS levels."
      },
      {
        "number": "35",
        "name": "RxCLKIN-",
        "type": "input",
        "description": "Inverting FPD-Link LVDS clock input; requires external 100-Ω differential termination for standard LVDS levels."
      },
      {
        "number": "36",
        "name": "RxCLKIN+",
        "type": "input",
        "description": "True FPD-Link LVDS clock input; requires external 100-Ω differential termination for standard LVDS levels."
      },
      {
        "number": "37",
        "name": "RxIN3-",
        "type": "input",
        "description": "Inverting FPD-Link input data pair; requires external 100-Ω differential termination for standard LVDS levels."
      },
      {
        "number": "38",
        "name": "RxIN3+",
        "type": "input",
        "description": "True FPD-Link input data pair; requires external 100-Ω differential termination for standard LVDS levels."
      },
      {
        "number": "39",
        "name": "GPIO0",
        "type": "bidirectional",
        "description": "General-purpose LVCMOS I/O with internal pulldown, referenced to VDDIO."
      },
      {
        "number": "40",
        "name": "GPIO1",
        "type": "bidirectional",
        "description": "General-purpose LVCMOS I/O with internal pulldown, referenced to VDDIO."
      },
      {
        "number": "41",
        "name": "EP",
        "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's pin table lists DOUT-/DOUT+ as I/O LVDS; they are typed as output here because this ; RES0 and RES1 are reserved pins specified only as 'Connect to GND'; typed power_in per the GND conve; Pins are multiplexed (I2S inputs shared with GPIO_REG/GPIO I/O). Typed as input for I2S and bidirect",
          "exposed pad 41 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 12,
        "cost_usd": 0.1094,
        "at": "2026-10-08T22:59:36"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ds90ub927q-q1",
        "pages": 59,
        "sha256": "3a7797546947a1ee",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 41,
        "described": 41,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e5b4286c2329085d9ef7f90d5eb5bf41a435241ecc1baaf1383823b6d6a946ae",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ds90ub927qsqe-etched.step",
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        "sha256": "c39b91819b4aa5f548d0714024cfc354a0dba99dd15e9096593804284d7d28e0",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
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  }
}