TCA6408AQPWRQ1

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  "slug": "tca6408aqpwrq1",
  "title": "TCA6408AQPWRQ1",
  "brief": "Texas Instruments I/O Expanders, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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  "component": {
    "mpn": "TCA6408AQPWRQ1",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "I/O Expanders",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tca6408a-q1",
    "parts": {
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    },
    "distributor_links": {
      "lcsc": "C201668",
      "digikey": "296-44902-2-ND",
      "mouser": "595-TCA6408AQPWRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-01T06:54:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-44902-2-ND",
        "status": "found",
        "lifecycle": "Active"
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      "mouser": {
        "pn": "595-TCA6408AQPWRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCCI",
        "type": "power_in",
        "description": "Supply voltage for I2C bus; operating voltage range 1.65V to 3.6V; provides voltage level translation."
      },
      {
        "number": "2",
        "name": "ADDR",
        "type": "input",
        "description": "Address input; connect directly to VCCP or ground for device selection."
      },
      {
        "number": "3",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input; VIH = 0.7×VCCI to 3.6V, VIL = -0.5 to 0.3×VCCI; connect to VCCI through pull-up resistor if not actively controlled."
      },
      {
        "number": "4",
        "name": "P0",
        "type": "bidirectional",
        "description": "P-port 0 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP."
      },
      {
        "number": "5",
        "name": "P1",
        "type": "bidirectional",
        "description": "P-port 1 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP."
      },
      {
        "number": "6",
        "name": "P2",
        "type": "bidirectional",
        "description": "P-port 2 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP."
      },
      {
        "number": "7",
        "name": "P3",
        "type": "bidirectional",
        "description": "P-port 3 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP."
      },
      {
        "number": "8",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; return path for supply currents."
      },
      {
        "number": "9",
        "name": "P4",
        "type": "bidirectional",
        "description": "P-port 4 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP."
      },
      {
        "number": "10",
        "name": "P5",
        "type": "bidirectional",
        "description": "P-port 5 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP."
      },
      {
        "number": "11",
        "name": "P6",
        "type": "bidirectional",
        "description": "P-port 6 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP."
      },
      {
        "number": "12",
        "name": "P7",
        "type": "bidirectional",
        "description": "P-port 7 push-pull input-output; configurable as input or output, defaults to input at power-on; output voltage VO = 0 to VCCP."
      },
      {
        "number": "13",
        "name": "INT",
        "type": "output",
        "description": "Open-drain active-low interrupt output; maximum continuous output current IOL = 25mA for VO = 0 to VCCI; connect to VCCI through pull-up resistor."
      },
      {
        "number": "14",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock bus input for I2C/SMBus interface; VIH = 0.7×VCCI to VCCI, VIL = -0.5 to 0.3×VCCI; connect to VCCI through pull-up resistor."
      },
      {
        "number": "15",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data bus input-output for I2C/SMBus interface; VIH = 0.7×VCCI to VCCI, VIL = -0.5 to 0.3×VCCI; maximum output current IOL = 25mA; connect to VCCI through pull-up resistor."
      },
      {
        "number": "16",
        "name": "VCCP",
        "type": "power_in",
        "description": "Supply voltage for P-ports; operating voltage range 1.65V to 3.6V; maximum continuous current ICC = 160mA."
      }
    ],
    "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": 0.0841,
        "at": "2026-10-01T06:54:00"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tca6408a-q1",
        "pages": 41,
        "sha256": "edb72d360821dab7",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSSOP-16",
      "Category": "Interface",
      "Pins": "16"
    }
  },
  "variants": [],
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  "discovery_pitch": "TCA6408AQPWRQ1 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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