TLC7135CDW

{
  "slug": "tlc7135cdw",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Analog To Digital Converters (ADC), SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "data acquisition",
    "tlc7135cdw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "README.md",
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    "tlc7135cdw.glb",
    "tlc7135cdw.step",
    "tlc7135cdw.lbr",
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    "docs/tlc7135cdw-datasheet.pdf",
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  "component": {
    "mpn": "TLC7135CDW",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-28-300mil",
    "pin_count": 28,
    "category": "Data Acquisition",
    "subcategory": "Analog To Digital Converters (ADC)",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tlc7135",
    "parts": {
      "symbol": "tlc7135cdw.kicad_sym",
      "footprint": "tlc7135cdw.kicad_mod",
      "model_3d": "tlc7135cdw-hero.glb",
      "model_3d_plain": "tlc7135cdw.glb",
      "model_3d_step": "tlc7135cdw-etched.step",
      "model_3d_step_plain": "tlc7135cdw.step",
      "lbr": "tlc7135cdw.lbr"
    },
    "distributor_links": {
      "lcsc": "C1549780",
      "digikey": "2156-TLC7135CDW-ND",
      "mouser": "595-TLC7135CDW"
    },
    "distributor_check": {
      "checked_at": "2026-10-06T03:54:40Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-TLC7135CDW-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-TLC7135CDW",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC−",
        "type": "power_in",
        "description": "Negative power supply rail, −3 to −8 V recommended operating range."
      },
      {
        "number": "2",
        "name": "REF",
        "type": "input",
        "description": "Reference voltage input, nominally 1 V, positive relative to ANLG COMMON."
      },
      {
        "number": "3",
        "name": "ANLG COMMON",
        "type": "power_in",
        "description": "Analog circuit common reference, establishes baseline for analog measurements."
      },
      {
        "number": "4",
        "name": "INT OUT",
        "type": "output",
        "description": "Integrator output voltage, ranges ±3.5 to ±4 V during conversion cycle."
      },
      {
        "number": "5",
        "name": "AUTO ZERO",
        "type": "input",
        "description": "Auto-zero mode control signal for input buffer offset compensation."
      },
      {
        "number": "6",
        "name": "BUFF OUT",
        "type": "output",
        "description": "Buffer amplifier output connected to integrator input."
      },
      {
        "number": "7",
        "name": "Cref−",
        "type": "passive",
        "description": "Negative terminal of reference capacitor, typically 1 µF polypropylene."
      },
      {
        "number": "8",
        "name": "Cref+",
        "type": "passive",
        "description": "Positive terminal of reference capacitor, typically 1 µF polypropylene."
      },
      {
        "number": "9",
        "name": "IN−",
        "type": "input",
        "description": "Differential analog input negative terminal, voltage range VCC− +1 V to VCC+ −0.5 V."
      },
      {
        "number": "10",
        "name": "IN+",
        "type": "input",
        "description": "Differential analog input positive terminal, voltage range VCC− +1 V to VCC+ −0.5 V."
      },
      {
        "number": "11",
        "name": "VCC+",
        "type": "power_in",
        "description": "Positive power supply rail, +4 to +6 V recommended operating range."
      },
      {
        "number": "12",
        "name": "D5",
        "type": "output",
        "description": "Most significant digit drive output for tens-of-thousands digit, active high for 200 clock pulses per digit."
      },
      {
        "number": "13",
        "name": "B1",
        "type": "output",
        "description": "Binary-coded-decimal output bit 1 (LSB), multiplexed with other BCD bits under STROBE control."
      },
      {
        "number": "14",
        "name": "B2",
        "type": "output",
        "description": "Binary-coded-decimal output bit 2, multiplexed with other BCD bits under STROBE control."
      },
      {
        "number": "15",
        "name": "B4",
        "type": "output",
        "description": "Binary-coded-decimal output bit 4, multiplexed with other BCD bits under STROBE control."
      },
      {
        "number": "16",
        "name": "B8",
        "type": "output",
        "description": "Binary-coded-decimal output bit 8 (MSB), multiplexed with other BCD bits under STROBE control."
      },
      {
        "number": "17",
        "name": "D4",
        "type": "output",
        "description": "Digit drive output for thousands digit, active high for 200 clock pulses per digit."
      },
      {
        "number": "18",
        "name": "D3",
        "type": "output",
        "description": "Digit drive output for hundreds digit, active high for 200 clock pulses per digit."
      },
      {
        "number": "19",
        "name": "D2",
        "type": "output",
        "description": "Digit drive output for tens digit, active high for 200 clock pulses per digit."
      },
      {
        "number": "20",
        "name": "D1",
        "type": "output",
        "description": "Least significant digit drive output for units digit, active high for 200 clock pulses per digit."
      },
      {
        "number": "21",
        "name": "BUSY",
        "type": "output",
        "description": "Busy output signal, high during signal integrate and deintegrate phases, TTL-compatible."
      },
      {
        "number": "22",
        "name": "CLK",
        "type": "input",
        "description": "Clock input, TTL-compatible, frequency range 0 Hz to 2 MHz, VIH = 2.8 V, VIL = 0.8 V."
      },
      {
        "number": "23",
        "name": "POLARITY",
        "type": "output",
        "description": "Polarity output, high for positive input signal, low for negative, updates at deintegrate phase."
      },
      {
        "number": "24",
        "name": "DGTL GND",
        "type": "power_in",
        "description": "Digital circuit ground return, separate from analog ground to minimize noise coupling."
      },
      {
        "number": "25",
        "name": "RUN/HOLD",
        "type": "input",
        "description": "Run/Hold control input, TTL-compatible, low level initiates hold mode, positive pulse restarts measurement."
      },
      {
        "number": "26",
        "name": "STROBE",
        "type": "input",
        "description": "Strobe input, negative-going pulses transfer BCD conversion data to external latches or microprocessors."
      },
      {
        "number": "27",
        "name": "OVER RANGE",
        "type": "output",
        "description": "Over-range output signal, goes high when magnitude of differential input exceeds ±2 × Vref."
      },
      {
        "number": "28",
        "name": "UNDER RANGE",
        "type": "output",
        "description": "Under-range output signal, goes high when conversion result ≤ 1800 counts (9% of 20,000 count full-scale)."
      }
    ],
    "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": [],
        "pages_sent": 17,
        "cost_usd": 0.1935,
        "at": "2026-10-06T03:54:22"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tlc7135",
        "pages": 17,
        "sha256": "89de1bb2c0ac6ea0",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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}