PCA9545APWR

{
  "slug": "pca9545apwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Interface - Specialized, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "communication interface chip-uart-485-232",
    "pca9545apwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "pca9545apwr.kicad_sym",
    "pca9545apwr.kicad_mod",
    "pca9545apwr.glb",
    "pca9545apwr.step",
    "pca9545apwr.lbr",
    "docs/hero.png",
    "docs/pca9545apwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "pca9545apwr-hero.glb",
    "pca9545apwr-hero.overlay.json"
  ],
  "component": {
    "mpn": "PCA9545APWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "Interface - Specialized",
    "datasheet": "https://www.ti.com/lit/ds/symlink/pca9545a.pdf",
    "parts": {
      "symbol": "pca9545apwr.kicad_sym",
      "footprint": "pca9545apwr.kicad_mod",
      "model_3d": "pca9545apwr-hero.glb",
      "model_3d_plain": "pca9545apwr.glb",
      "model_3d_step": "pca9545apwr-etched.step",
      "model_3d_step_plain": "pca9545apwr.step",
      "lbr": "pca9545apwr.lbr"
    },
    "distributor_links": {
      "lcsc": 2149504,
      "digikey": "296-20963-2-ND",
      "mouser": "595-PCA9545APWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-03T08:00:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-20963-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-PCA9545APWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "Address input 0; connect directly to VCC or ground."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Address input 1; connect directly to VCC or ground."
      },
      {
        "number": "3",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input; connect to VDPUM through a pull-up resistor if not used."
      },
      {
        "number": "4",
        "name": "INT0",
        "type": "input",
        "description": "Active-low interrupt input 0; connect to VDPU0 through a pull-up resistor."
      },
      {
        "number": "5",
        "name": "SD0",
        "type": "bidirectional",
        "description": "Serial data 0 for channel 0; connect to VDPU0 through a pull-up resistor."
      },
      {
        "number": "6",
        "name": "SC0",
        "type": "bidirectional",
        "description": "Serial clock 0 for channel 0; connect to VDPU0 through a pull-up resistor."
      },
      {
        "number": "7",
        "name": "INT1",
        "type": "input",
        "description": "Active-low interrupt input 1; connect to VDPU1 through a pull-up resistor."
      },
      {
        "number": "8",
        "name": "SD1",
        "type": "bidirectional",
        "description": "Serial data 1 for channel 1; connect to VDPU1 through a pull-up resistor."
      },
      {
        "number": "9",
        "name": "SC1",
        "type": "bidirectional",
        "description": "Serial clock 1 for channel 1; connect to VDPU1 through a pull-up resistor."
      },
      {
        "number": "10",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "11",
        "name": "INT2",
        "type": "input",
        "description": "Active-low interrupt input 2; connect to VDPU2 through a pull-up resistor."
      },
      {
        "number": "12",
        "name": "SD2",
        "type": "bidirectional",
        "description": "Serial data 2 for channel 2; connect to VDPU2 through a pull-up resistor."
      },
      {
        "number": "13",
        "name": "SC2",
        "type": "bidirectional",
        "description": "Serial clock 2 for channel 2; connect to VDPU2 through a pull-up resistor."
      },
      {
        "number": "14",
        "name": "INT3",
        "type": "input",
        "description": "Active-low interrupt input 3; connect to VDPU3 through a pull-up resistor."
      },
      {
        "number": "15",
        "name": "SD3",
        "type": "bidirectional",
        "description": "Serial data 3 for channel 3; connect to VDPU3 through a pull-up resistor."
      },
      {
        "number": "16",
        "name": "SC3",
        "type": "bidirectional",
        "description": "Serial clock 3 for channel 3; connect to VDPU3 through a pull-up resistor."
      },
      {
        "number": "17",
        "name": "INT",
        "type": "output",
        "description": "Active-low interrupt output (AND of INT3-INT0); connect to VDPUM through a pull-up resistor."
      },
      {
        "number": "18",
        "name": "SCL",
        "type": "bidirectional",
        "description": "I2C serial clock line (master); connect to VDPUM through a pull-up resistor."
      },
      {
        "number": "19",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data line (master); connect to VDPUM through a pull-up resistor."
      },
      {
        "number": "20",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply power (2.3 V to 5.5 V)."
      }
    ],
    "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": 7,
        "cost_usd": 0.1137,
        "at": "2026-10-03T08:00:21"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/pca9545a.pdf",
        "pages": 36,
        "sha256": "a7c96385ccaa5910",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  }
}