tca6416artwr

{
  "slug": "tca6416artwr",
  "version": "0.2.0",
  "type": "component",
  "description": "Texas Instruments I/O Expanders, WQFN-24-EP(4x4). Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "comm-uart",
    "tca6416artwr"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tca6416artwr.kicad_sym",
    "tca6416artwr.kicad_mod",
    "tca6416artwr.glb",
    "tca6416artwr.step",
    "tca6416artwr-etched.step",
    "tca6416artwr.lbr",
    "docs/hero.png",
    "docs/tca6416artwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "component": {
    "mpn": "TCA6416ARTWR",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-24-EP(4x4)",
    "pin_count": 25,
    "category": "I/O Expanders",
    "parts": {
      "symbol": "tca6416artwr.kicad_sym",
      "footprint": "tca6416artwr.kicad_mod",
      "model_3d": "tca6416artwr-etched.glb",
      "model_3d_plain": "tca6416artwr.glb",
      "model_3d_step": "tca6416artwr-etched.step",
      "model_3d_step_plain": "tca6416artwr.step",
      "lbr": "tca6416artwr.lbr"
    },
    "pins": [
      {
        "number": "22",
        "name": "INT",
        "type": "output",
        "description": "Active-low interrupt output. Open-drain; connect to VCCI or VCCP through a pull-up resistor. Asserted when a P-port input changes state."
      },
      {
        "number": "23",
        "name": "VCCI",
        "type": "power_in",
        "description": "Supply voltage for the I2C-bus side (1.65 V to 5.5 V). Connect directly to the supply voltage of the external I2C controller."
      },
      {
        "number": "24",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input. Connect to VCCI or VCCP through a pull-up resistor if no active connection is used. Resets registers to default power-on values."
      },
      {
        "number": "1",
        "name": "P00",
        "type": "bidirectional",
        "description": "P-port 0 bit 0. Push-pull I/O structure. Configured as an input at power-on. Referenced to VCCP (1.65 V to 5.5 V)."
      },
      {
        "number": "2",
        "name": "P01",
        "type": "bidirectional",
        "description": "P-port 0 bit 1. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "3",
        "name": "P02",
        "type": "bidirectional",
        "description": "P-port 0 bit 2. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "4",
        "name": "P03",
        "type": "bidirectional",
        "description": "P-port 0 bit 3. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "5",
        "name": "P04",
        "type": "bidirectional",
        "description": "P-port 0 bit 4. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "6",
        "name": "P05",
        "type": "bidirectional",
        "description": "P-port 0 bit 5. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "7",
        "name": "P06",
        "type": "bidirectional",
        "description": "P-port 0 bit 6. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "8",
        "name": "P07",
        "type": "bidirectional",
        "description": "P-port 0 bit 7. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device (both VCCI and VCCP domains)."
      },
      {
        "number": "10",
        "name": "P10",
        "type": "bidirectional",
        "description": "P-port 1 bit 0. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "11",
        "name": "P11",
        "type": "bidirectional",
        "description": "P-port 1 bit 1. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "12",
        "name": "P12",
        "type": "bidirectional",
        "description": "P-port 1 bit 2. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "13",
        "name": "P13",
        "type": "bidirectional",
        "description": "P-port 1 bit 3. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "14",
        "name": "P14",
        "type": "bidirectional",
        "description": "P-port 1 bit 4. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "15",
        "name": "P15",
        "type": "bidirectional",
        "description": "P-port 1 bit 5. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "16",
        "name": "P16",
        "type": "bidirectional",
        "description": "P-port 1 bit 6. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "17",
        "name": "P17",
        "type": "bidirectional",
        "description": "P-port 1 bit 7. Push-pull I/O structure. Configured as an input at power-on."
      },
      {
        "number": "18",
        "name": "ADDR",
        "type": "input",
        "description": "I2C slave-address select input. Connect directly to VCCP or GND to select one of two addresses, allowing two TCA6416A devices on the same bus."
      },
      {
        "number": "19",
        "name": "SCL",
        "type": "input",
        "description": "I2C/SMBus serial clock input. Connect to VCCI through a pull-up resistor. Supports 100 kHz standard mode and 400 kHz fast mode."
      },
      {
        "number": "20",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C/SMBus serial data line. Open-drain; connect to VCCI through a pull-up resistor."
      },
      {
        "number": "21",
        "name": "VCCP",
        "type": "power_in",
        "description": "Supply voltage for the P-port I/O side of the TCA6416A (1.65 V to 5.5 V). Independent from VCCI to allow voltage-level translation."
      },
      {
        "number": "25",
        "name": "Thermal Pad",
        "type": "passive",
        "description": "Exposed thermal/die pad on the underside of the WQFN package. Connect to GND for best thermal performance."
      }
    ],
    "provenance": {
      "rebuilt": "component block rebuilt 2026-10-05 from this page's own README pinout table and .kicad_sym (pins cross-checked), no re-extraction"
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "distributor_links": {
      "digikey": "296-24826-2-ND",
      "mouser": "595-TCA6416ARTWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T19:19:36Z",
      "source": "Component Ocean /api/assign-pns + lcsc_map",
      "digikey": {
        "pn": "296-24826-2-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-TCA6416ARTWR",
        "status": "found"
      }
    },
    "models_3d": [
      {
        "file": "tca6416artwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f7d256794c4147daf24dcae0554fae18510315e565ad1e239b475be7fef80d8b",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tca6416artwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "312027e8dd73e1c8d857e341d22d2ef3f7ce8f3767bc84980b88ef1ad111a052",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}