PCA9555DWR

{
  "slug": "pca9555dwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments I/O Expanders, SOIC-24-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "pca9555dwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "pca9555dwr.kicad_sym",
    "pca9555dwr.kicad_mod",
    "pca9555dwr.glb",
    "pca9555dwr.step",
    "pca9555dwr.lbr",
    "docs/hero.png",
    "docs/pca9555dwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "pca9555dwr-hero.glb",
    "pca9555dwr-hero.overlay.json"
  ],
  "component": {
    "mpn": "PCA9555DWR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-24-300mil",
    "pin_count": 24,
    "category": "Interface",
    "subcategory": "I/O Expanders",
    "datasheet": "https://www.ti.com/cn/lit/gpn/pca9555",
    "parts": {
      "symbol": "pca9555dwr.kicad_sym",
      "footprint": "pca9555dwr.kicad_mod",
      "model_3d": "pca9555dwr-hero.glb",
      "model_3d_plain": "pca9555dwr.glb",
      "model_3d_step": "pca9555dwr-etched.step",
      "model_3d_step_plain": "pca9555dwr.step",
      "lbr": "pca9555dwr.lbr"
    },
    "distributor_links": {
      "lcsc": 2652274,
      "digikey": "296-20973-2-ND",
      "mouser": "595-PCA9555DWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T23:00:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-20973-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-PCA9555DWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "INT",
        "type": "output",
        "description": "Interrupt output; connect to VCC through pullup resistor."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Address input 1; connect to VCC or ground."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Address input 2; connect to VCC or ground."
      },
      {
        "number": "4",
        "name": "P00",
        "type": "bidirectional",
        "description": "Port P00 input/output with push-pull structure."
      },
      {
        "number": "5",
        "name": "P01",
        "type": "bidirectional",
        "description": "Port P01 input/output with push-pull structure."
      },
      {
        "number": "6",
        "name": "P02",
        "type": "bidirectional",
        "description": "Port P02 input/output with push-pull structure."
      },
      {
        "number": "7",
        "name": "P03",
        "type": "bidirectional",
        "description": "Port P03 input/output with push-pull structure."
      },
      {
        "number": "8",
        "name": "P04",
        "type": "bidirectional",
        "description": "Port P04 input/output with push-pull structure."
      },
      {
        "number": "9",
        "name": "P05",
        "type": "bidirectional",
        "description": "Port P05 input/output with push-pull structure."
      },
      {
        "number": "10",
        "name": "P06",
        "type": "bidirectional",
        "description": "Port P06 input/output with push-pull structure."
      },
      {
        "number": "11",
        "name": "P07",
        "type": "bidirectional",
        "description": "Port P07 input/output with push-pull structure."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; negative supply rail."
      },
      {
        "number": "13",
        "name": "P10",
        "type": "bidirectional",
        "description": "Port P10 input/output with push-pull structure."
      },
      {
        "number": "14",
        "name": "P11",
        "type": "bidirectional",
        "description": "Port P11 input/output with push-pull structure."
      },
      {
        "number": "15",
        "name": "P12",
        "type": "bidirectional",
        "description": "Port P12 input/output with push-pull structure."
      },
      {
        "number": "16",
        "name": "P13",
        "type": "bidirectional",
        "description": "Port P13 input/output with push-pull structure."
      },
      {
        "number": "17",
        "name": "P14",
        "type": "bidirectional",
        "description": "Port P14 input/output with push-pull structure."
      },
      {
        "number": "18",
        "name": "P15",
        "type": "bidirectional",
        "description": "Port P15 input/output with push-pull structure."
      },
      {
        "number": "19",
        "name": "P16",
        "type": "bidirectional",
        "description": "Port P16 input/output with push-pull structure."
      },
      {
        "number": "20",
        "name": "P17",
        "type": "bidirectional",
        "description": "Port P17 input/output with push-pull structure."
      },
      {
        "number": "21",
        "name": "A0",
        "type": "input",
        "description": "Address input 0; connect to VCC or ground."
      },
      {
        "number": "22",
        "name": "SCL",
        "type": "bidirectional",
        "description": "Serial clock bus; connect to VCC through pullup resistor."
      },
      {
        "number": "23",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data bus; connect to VCC through pullup resistor."
      },
      {
        "number": "24",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage; 2.3V to 5.5V operating range."
      }
    ],
    "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": 12,
        "cost_usd": 0.1386,
        "at": "2026-10-05T23:00:09"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/pca9555",
        "pages": 49,
        "sha256": "f82351ef5c7f9c9c",
        "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"
    }
  }
}