TLC5943RHBR

{
  "slug": "tlc5943rhbr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments LED Drivers, VQFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "nixie tube driver-led driver",
    "tlc5943rhbr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tlc5943rhbr.kicad_sym",
    "tlc5943rhbr.kicad_mod",
    "tlc5943rhbr.glb",
    "tlc5943rhbr.step",
    "tlc5943rhbr.lbr",
    "docs/hero.png",
    "docs/tlc5943rhbr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "tlc5943rhbr-hero.glb",
    "tlc5943rhbr-hero.overlay.json"
  ],
  "component": {
    "mpn": "TLC5943RHBR",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Nixie Tube Driver/LED Driver",
    "subcategory": "LED Drivers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tlc5943",
    "parts": {
      "symbol": "tlc5943rhbr.kicad_sym",
      "footprint": "tlc5943rhbr.kicad_mod",
      "model_3d": "tlc5943rhbr-hero.glb",
      "model_3d_plain": "tlc5943rhbr.glb",
      "model_3d_step": "tlc5943rhbr-etched.step",
      "model_3d_step_plain": "tlc5943rhbr.step",
      "lbr": "tlc5943rhbr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2679144",
      "digikey": "296-23091-2-ND",
      "mouser": "595-TLC5943RHBR"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T02:18:00Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-23091-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-TLC5943RHBR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SCLK",
        "type": "input",
        "description": "Serial data shift clock for grayscale and brightness shift registers; Schmitt buffer input; data present on SIN are shifted into selected shift register with rising edge of SCLK."
      },
      {
        "number": "2",
        "name": "SIN",
        "type": "input",
        "description": "Serial data input for grayscale and brightness control data; Schmitt buffer input."
      },
      {
        "number": "3",
        "name": "BCSEL",
        "type": "input",
        "description": "Shift register and data latch select; Schmitt buffer input; low selects Grayscale register, high selects Brightness Control register; do not change while SCLK is high."
      },
      {
        "number": "4",
        "name": "OUT0",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "5",
        "name": "OUT1",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "6",
        "name": "OUT2",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "7",
        "name": "OUT3",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "8",
        "name": "OUT4",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "9",
        "name": "OUT5",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "10",
        "name": "OUT6",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "11",
        "name": "OUT7",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "14",
        "name": "OUT8",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "15",
        "name": "OUT9",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "16",
        "name": "OUT10",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "17",
        "name": "OUT11",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "18",
        "name": "OUT12",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "19",
        "name": "OUT13",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "20",
        "name": "OUT14",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "21",
        "name": "OUT15",
        "type": "output",
        "description": "Constant current sink output; 50 mA maximum capability with 16-bit grayscale PWM control and 7-bit global brightness control."
      },
      {
        "number": "22",
        "name": "XERR",
        "type": "output",
        "description": "Error output; open-drain output that goes low when LED Open Detection (LOD) or Thermal Error Flag (TEF) is detected."
      },
      {
        "number": "23",
        "name": "SOUT",
        "type": "output",
        "description": "Serial data output connected to Grayscale/Status Information shift register or Brightness Control shift register selected by BCSEL."
      },
      {
        "number": "24",
        "name": "GSCLK",
        "type": "input",
        "description": "Reference clock for Grayscale PWM control; Schmitt buffer input; 33 MHz maximum; each rising edge increments grayscale counter when BLANK is low."
      },
      {
        "number": "25",
        "name": "XTEST",
        "type": "input",
        "description": "Factory test pin; must be connected to VCC or GND."
      },
      {
        "number": "26",
        "name": "IREF",
        "type": "input",
        "description": "Reference current setting; connect external resistor between IREF and GND to set OUT0-OUT15 sink current value."
      },
      {
        "number": "27",
        "name": "VCC",
        "type": "power_in",
        "description": "Power-supply voltage; operating range 3.0 V to 5.5 V."
      },
      {
        "number": "28",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "29",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "30",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "31",
        "name": "BLANK",
        "type": "input",
        "description": "Blank control (all constant current outputs off); Schmitt buffer input; high forces all outputs OFF and resets grayscale counter to 0."
      },
      {
        "number": "32",
        "name": "XLAT",
        "type": "input",
        "description": "Latch control; low-to-high transition moves data from Grayscale and Brightness shift registers to respective first data latches."
      },
      {
        "number": "33",
        "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-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "exposed pad 33 added from the footprint"
        ],
        "pages_sent": 10,
        "cost_usd": 0.162,
        "at": "2026-10-07T02:17:45"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tlc5943",
        "pages": 43,
        "sha256": "7fde582ec49e3d08",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tlc5943rhbr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.875
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tlc5943rhbr-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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "68e69b13c2fb9981114120afc24a74f922731ec0d671a3c243bf3e3dc5bac69c",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}