TM1929

{
  "schema_version": 1,
  "type": "component",
  "slug": "tm1929",
  "title": "TM1929",
  "brief": "TM Shenzhen Titan Micro Elec LED Drivers, QSOP-24-150mil. 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",
    "led drivers",
    "tm1929",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TM1929",
    "manufacturer": "TM Shenzhen Titan Micro Elec",
    "package": "QSOP-24-150mil",
    "pin_count": 24,
    "category": "LED Drivers",
    "subcategory": "LED Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835937594040320",
    "parts": {
      "symbol": "tm1929.kicad_sym",
      "footprint": "tm1929.kicad_mod",
      "model_3d": "tm1929-hero.glb",
      "model_3d_plain": "tm1929-etched.glb",
      "model_3d_step": "tm1929-etched.step",
      "model_3d_step_plain": "tm1929.step",
      "lbr": "tm1929.lbr"
    },
    "distributor_links": {
      "lcsc": "C5174517"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T07:48:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Power supply negative terminal (ground)."
      },
      {
        "number": "2",
        "name": "SCL",
        "type": "input",
        "description": "I2C clock input, supports up to 400 kHz and needs a pull-up resistor to the supply."
      },
      {
        "number": "3",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C data pin; the datasheet lists it as an input, but the chip pulls it low to acknowledge writes, and it needs a pull-up resistor to the supply."
      },
      {
        "number": "4",
        "name": "OUT0",
        "type": "output",
        "description": "Constant-current output channel 0, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "5",
        "name": "OUT1",
        "type": "output",
        "description": "Constant-current output channel 1, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "6",
        "name": "OUT2",
        "type": "output",
        "description": "Constant-current output channel 2, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "7",
        "name": "OUT3",
        "type": "output",
        "description": "Constant-current output channel 3, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "8",
        "name": "OUT4",
        "type": "output",
        "description": "Constant-current output channel 4, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "9",
        "name": "OUT5",
        "type": "output",
        "description": "Constant-current output channel 5, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "10",
        "name": "OUT6",
        "type": "output",
        "description": "Constant-current output channel 6, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "11",
        "name": "OUT7",
        "type": "output",
        "description": "Constant-current output channel 7, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "12",
        "name": "OUT8",
        "type": "output",
        "description": "Constant-current output channel 8, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "13",
        "name": "OUT9",
        "type": "output",
        "description": "Constant-current output channel 9, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "14",
        "name": "OUT10",
        "type": "output",
        "description": "Constant-current output channel 10, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "15",
        "name": "OUT11",
        "type": "output",
        "description": "Constant-current output channel 11, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "16",
        "name": "OUT12",
        "type": "output",
        "description": "Constant-current output channel 12, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "17",
        "name": "OUT13",
        "type": "output",
        "description": "Constant-current output channel 13, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "18",
        "name": "OUT14",
        "type": "output",
        "description": "Constant-current output channel 14, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "19",
        "name": "OUT15",
        "type": "output",
        "description": "Constant-current output channel 15, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "20",
        "name": "OUT16",
        "type": "output",
        "description": "Constant-current output channel 16, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "21",
        "name": "OUT17",
        "type": "output",
        "description": "Constant-current output channel 17, 3 to 40 mA, with output voltage above 0.7V needed for constant current."
      },
      {
        "number": "22",
        "name": "REXT",
        "type": "input",
        "description": "Constant-current reference feedback pin; a resistor to ground sets the output current, with IOUT = (1.24V / Rext) x 12.5 (1240 Ω gives 12.5 mA)."
      },
      {
        "number": "23",
        "name": "ADDR",
        "type": "input",
        "description": "I2C chip address select: VDD = 4EH, GND = 46H, SCL = 4AH, SDA = 4CH (write only)."
      },
      {
        "number": "24",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply positive terminal, absolute maximum 0 to 5.5V."
      }
    ],
    "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 table gives only the range OUT0~OUT17 on pins 4–21. The pin-by-pin assignment was infe; The datasheet provides one pin-number figure and table with no explicit label tying them to QSOP24. ; The pin table lists SDA as type 'I' (input), but the I2C section says the device drives SDA low duri",
          "2/24 pins cited to the wrong page (name found elsewhere): ['22:REXT@p5', '23:ADDR@p5']"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0634,
        "at": "2026-10-18T07:48:11"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835937594040320",
        "pages": 11,
        "sha256": "608b27bcdda4653d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tm1929.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          8.65,
          1.72
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d2244e3f2eff53b6985f22b8c8a44bb319a1973a6a440b2597d6d67813b09338",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tm1929-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          8.65,
          1.72
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c528c717f327d4170ae4d08597ddf66888683bd51c4ab1cbd9fa044ae230e552",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TM Shenzhen Titan Micro Elec",
      "Package": "QSOP-24-150mil",
      "Category": "LED Drivers",
      "Pins": "24"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "608b27bcdda4653d0522253c39e9c82884f7f8a06d4ce389f73784bfde384d98",
      "rows": [
        {
          "name": "Electrical: 输出端电流 (Output current)",
          "symbol": "Iout",
          "kind": "electrical",
          "unit": "mA",
          "min": 3,
          "typ": null,
          "max": 40,
          "conditions": "用直流特性量测电路 (DC test circuit), 5V table",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "输出端漏电流 (Output leakage current)",
          "symbol": "Ioh",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "Voh=Vdd, 5V table",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电流偏移量（芯片内）(Channel-to-channel current offset)",
          "symbol": "dIout1",
          "kind": "tolerance",
          "unit": "%",
          "min": -3,
          "typ": 1.5,
          "max": 3,
          "conditions": "Iol=12.5mA, Vds=1.0V, Rext=1240Ω; printed typ ±1.5, max ±3",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电流偏移量（芯片间）(Chip-to-chip current offset)",
          "symbol": "dIout3",
          "kind": "tolerance",
          "unit": "%",
          "min": -6,
          "typ": 3,
          "max": 6,
          "conditions": "Iol=25mA, Vds=1.0V, Rext=620Ω; printed typ ±3, max ±6",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "输出电流 1 (Output current 1)",
          "symbol": "Iout1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 12.5,
          "max": null,
          "conditions": "Vds=1.0V, Rext=1240Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "输出电流 2 (Output current 2)",
          "symbol": "Iout2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 25,
          "max": null,
          "conditions": "Vds=1.0V, Rext=620Ω",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电流偏移量vs.输出电压 (Current offset vs. output voltage)",
          "symbol": "%/dVds",
          "kind": "electrical",
          "unit": "%/V",
          "min": -0.1,
          "typ": 0.1,
          "max": 0.1,
          "conditions": "输出电压=1.0～3.0V; printed typ ±0.1",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电流偏移量vs.电源电压 (Current offset vs. supply voltage)",
          "symbol": "%/dVdd",
          "kind": "electrical",
          "unit": "%/V",
          "min": -1,
          "typ": 1,
          "max": 1,
          "conditions": "电源电压=4.5～5.5V; printed typ ±1",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "软关断电流 (Soft shutdown current)",
          "symbol": "IDD(ssd)",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电压源输出电流 IDD(off)1 (Supply current, all outputs off)",
          "symbol": "IDD (off)1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.5,
          "max": 5,
          "conditions": "Rext=未接 (not connected), OUT0～OUT17=Off",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电压源输出电流 IDD(off)2 (Supply current, all outputs off)",
          "symbol": "IDD (off)2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4.5,
          "max": 7,
          "conditions": "Rext=1240Ω, OUT0～OUT17=Off",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电压源输出电流 IDD(off)3 (Supply current, all outputs off)",
          "symbol": "IDD (off)3",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 6,
          "max": 9,
          "conditions": "Rext=827Ω, OUT0～OUT17=Off",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电压源输出电流 IDD(on)1 (Supply current, all outputs on)",
          "symbol": "IDD (on)1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5.2,
          "max": 8.5,
          "conditions": "Rext=1240Ω, OUT0～OUT17=On",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电压源输出电流 IDD(on)2 (Supply current, all outputs on)",
          "symbol": "IDD (on)2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 6.5,
          "max": 9.5,
          "conditions": "Rext=827Ω, OUT0～OUT17=On",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电源电压 (Supply voltage)",
          "symbol": "Vdd",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": 5,
          "max": 5.5,
          "conditions": "-40℃~+85℃, GND=0, 5V table",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "电流偏移量（芯片间）(Chip-to-chip current offset)",
          "symbol": "dIout3",
          "kind": "tolerance",
          "unit": "%",
          "min": -6,
          "typ": 3,
          "max": 6,
          "conditions": "Iol=20mA, Vds=1.0V, Rext=770Ω; printed typ ±3, max ±6",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "输出电流 2 (Output current 2)",
          "symbol": "Iout2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "Vds=1.0V, Rext=770Ω",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "电流偏移量vs.输出电压 (Current offset vs. output voltage)",
          "symbol": "%/dVds",
          "kind": "electrical",
          "unit": "%/V",
          "min": -0.1,
          "typ": 0.1,
          "max": 0.1,
          "conditions": "输出电压=1.0～3.0V; printed typ ±0.1",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "电流偏移量vs.电源电压 (Current offset vs. supply voltage)",
          "symbol": "%/dVDD",
          "kind": "electrical",
          "unit": "%/V",
          "min": -1,
          "typ": 1,
          "max": 1,
          "conditions": "电源电压=3.0～3.6V; printed typ ±1",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "软关断电流 (Soft shutdown current)",
          "symbol": "IDD(SSD)",
          "kind": "electrical",
          "unit": "uA",
          "min": null,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "电压源输出电流 IDD(off)1 (Supply current, all outputs off)",
          "symbol": "IDD (off)1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.8,
          "max": 5,
          "conditions": "Rext=未接 (not connected), OUT0～OUT17=Off",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "电压源输出电流 IDD(off)2 (Supply current, all outputs off)",
          "symbol": "IDD (off)2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4.1,
          "max": 7,
          "conditions": "Rext=2540Ω, OUT0～OUT17=Off",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "电压源输出电流 IDD(off)3 (Supply current, all outputs off)",
          "symbol": "IDD (off)3",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5.2,
          "max": 8.5,
          "conditions": "Rext=1270Ω, OUT0～OUT17=Off",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "电压源输出电流 IDD(on)1 (Supply current, all outputs on)",
          "symbol": "IDD (on)1",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4.5,
          "max": 7,
          "conditions": "Rext=2540Ω, OUT0～OUT17=On",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "电压源输出电流 IDD(on)2 (Supply current, all outputs on)",
          "symbol": "IDD (on)2",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5.4,
          "max": 8.5,
          "conditions": "Rext=1270Ω, OUT0～OUT17=On",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "电源电压 (Supply voltage)",
          "symbol": "Vdd",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": 3.3,
          "max": 4.5,
          "conditions": "-40℃~+85℃, GND=0, 3.3V table",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "SCL周期 (SCL clock frequency)",
          "symbol": "fSCL",
          "kind": "timing",
          "unit": "kHZ",
          "min": 0,
          "typ": null,
          "max": 400,
          "conditions": "VDD=3.0V～5.5V, 25℃",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "总线空闲时间 (Bus free time)",
          "symbol": "tBUF",
          "kind": "timing",
          "unit": "us",
          "min": 1.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "开始条件保持时间 (Start condition hold time)",
          "symbol": "tHD;STA",
          "kind": "timing",
          "unit": "us",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "低电平SCL幅宽 (Low period of SCL)",
          "symbol": "tLOW",
          "kind": "timing",
          "unit": "us",
          "min": 1.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "高电平SCL幅宽 (High period of SCL)",
          "symbol": "tHIGH",
          "kind": "timing",
          "unit": "us",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "开始条件建立时间 (Start condition setup time)",
          "symbol": "tSU;STA",
          "kind": "timing",
          "unit": "us",
          "min": 0.6,
          "typ": null,
          "max": null,
          "conditions": "有效重复开始条件 (valid repeated start condition)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "SDA 保持时间 (SDA hold time)",
          "symbol": "tSDH",
          "kind": "timing",
          "unit": "us",
          "min": null,
          "typ": null,
          "max": 0.9,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "SDA 建立时间 (SDA setup time)",
          "symbol": "tSDS",
          "kind": "timing",
          "unit": "ns",
          "min": 100,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "输入信号上升时间 (Input signal rise time)",
          "symbol": "tr",
          "kind": "timing",
          "unit": "us",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "min printed as 20+0.1Cb; Cb = total capacitance in pF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "输入信号下降时间 (Input signal fall time)",
          "symbol": "tf",
          "kind": "timing",
          "unit": "us",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "min printed as 20+0.1Cb; Cb = total capacitance in pF",
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          "name": "停止条件建立时间 (Stop condition setup time)",
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          "name": "时钟输出有效时间 (Clock output valid time)",
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          "name": "输入过滤时间 (SDA and SCL pins) (Input filter time)",
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          "name": "逻辑电源电压 (Logic supply voltage)",
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          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5.5,
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          "name": "低电平输入电压 (Low-level input voltage)",
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          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
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          "name": "输入端电压 (Input voltage)",
          "symbol": "Vin",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.4,
          "typ": null,
          "max": null,
          "conditions": "25℃, VDD=5V; max printed as VDD+0.4",
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          "kind": "absolute_maximum",
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          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "25℃, VDD=5V",
          "source_page": 2,
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          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 1000,
          "conditions": "25℃, VDD=5V; printed as +1000 mA",
          "source_page": 2,
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          "name": "工作温度 (Operating temperature)",
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          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "25℃, VDD=5V",
          "source_page": 2,
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        {
          "name": "储存温度 (Storage temperature)",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "25℃, VDD=5V",
          "source_page": 2,
          "source": "datasheet"
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