TCAL6416RTWR

{
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  "type": "component",
  "slug": "tcal6416rtwr",
  "title": "TCAL6416RTWR",
  "brief": "Texas Instruments I/O Expanders, WQFN-24(4x4). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "comm-uart",
    "tcal6416rtwr"
  ],
  "component": {
    "mpn": "TCAL6416RTWR",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-24(4x4)",
    "pin_count": 25,
    "category": "Comm/UART",
    "subcategory": "I/O Expanders",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2307211800_Texas-Instruments-TCAL6416RTWR_C5956642.pdf",
    "parts": {
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "P00",
        "type": "bidirectional",
        "description": "P-port 0 input/output (push-pull design structure). At power-on, P00 is configured as an input."
      },
      {
        "number": "2",
        "name": "P01",
        "type": "bidirectional",
        "description": "P-port 1 input/output (push-pull). At power-on, P01 is configured as an input."
      },
      {
        "number": "3",
        "name": "P02",
        "type": "bidirectional",
        "description": "P-port 2 input/output (push-pull). At power-on, P02 is configured as an input."
      },
      {
        "number": "4",
        "name": "P03",
        "type": "bidirectional",
        "description": "P-port 3 input/output (push-pull). At power-on, P03 is configured as an input."
      },
      {
        "number": "5",
        "name": "P04",
        "type": "bidirectional",
        "description": "P-port 4 input/output (push-pull). At power-on, P04 is configured as an input."
      },
      {
        "number": "6",
        "name": "P05",
        "type": "bidirectional",
        "description": "P-port 5 input/output (push-pull). At power-on, P05 is configured as an input."
      },
      {
        "number": "7",
        "name": "P06",
        "type": "bidirectional",
        "description": "P-port 6 input/output (push-pull). At power-on, P06 is configured as an input."
      },
      {
        "number": "8",
        "name": "P07",
        "type": "bidirectional",
        "description": "P-port 7 input/output (push-pull). At power-on, P07 is configured as an input."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground."
      },
      {
        "number": "10",
        "name": "P10",
        "type": "bidirectional",
        "description": "P-port 10 input/output (push-pull). At power-on, P10 is configured as an input."
      },
      {
        "number": "11",
        "name": "P11",
        "type": "bidirectional",
        "description": "P-port 11 input/output (push-pull). At power-on, P11 is configured as an input."
      },
      {
        "number": "12",
        "name": "P12",
        "type": "bidirectional",
        "description": "P-port 12 input/output (push-pull). At power-on, P12 is configured as an input."
      },
      {
        "number": "13",
        "name": "P13",
        "type": "bidirectional",
        "description": "P-port 13 input/output (push-pull). At power-on, P13 is configured as an input."
      },
      {
        "number": "14",
        "name": "P14",
        "type": "bidirectional",
        "description": "P-port 14 input/output (push-pull). At power-on, P14 is configured as an input."
      },
      {
        "number": "15",
        "name": "P15",
        "type": "bidirectional",
        "description": "P-port 15 input/output (push-pull). At power-on, P15 is configured as an input."
      },
      {
        "number": "16",
        "name": "P16",
        "type": "bidirectional",
        "description": "P-port 16 input/output (push-pull). At power-on, P16 is configured as an input."
      },
      {
        "number": "17",
        "name": "P17",
        "type": "bidirectional",
        "description": "P-port 17 input/output (push-pull). At power-on, P17 is configured as an input."
      },
      {
        "number": "18",
        "name": "ADDR",
        "type": "input",
        "description": "I2C address-select input. Tie directly to VCCP or GND to select one of two possible I2C slave addresses; allows two TCAL6416 devices on the same bus."
      },
      {
        "number": "19",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input. Connect to VCCI through a pull-up resistor. Supports 100 kHz standard, 400 kHz fast, and 1 MHz fast-mode-plus."
      },
      {
        "number": "20",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data (open-drain, bidirectional). Connect to VCCI through a pull-up resistor."
      },
      {
        "number": "21",
        "name": "VCCP",
        "type": "power_in",
        "description": "Supply voltage for the P-port side (P00-P17). Operating range 1.08 V to 3.6 V; enables voltage-level translation independent of VCCI."
      },
      {
        "number": "22",
        "name": "INT",
        "type": "output",
        "description": "Active-low open-drain interrupt output. Connect to VCCI or VCCP through a pull-up resistor. Asserts when any input P-port changes state (subject to interrupt mask register)."
      },
      {
        "number": "23",
        "name": "VCCI",
        "type": "power_in",
        "description": "Supply voltage for the I2C-bus side. Connect directly to the supply voltage of the external I2C controller. Operating range 1.08 V to 3.6 V."
      },
      {
        "number": "24",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input. Connect to VCCI through a pull-up resistor if no active connection is used. Forces all registers to their default (power-on) state when driven low."
      },
      {
        "number": "25",
        "name": "EP",
        "type": "passive",
        "description": "Exposed thermal/center pad on the WQFN underside. Must be connected as a secondary ground or left electrically open (per Figure 5-2 note)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2307211800_Texas-Instruments-TCAL6416RTWR_C5956642.pdf",
        "pages": 53,
        "sha256": "741d66f5bb7613d2",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
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        "checked": "2026-10-07",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "WQFN-24(4x4)",
      "Category": "Comm/UART",
      "Pins": "25"
    }
  },
  "variants": [
    {
      "mpn": "TCAL6416RTWR",
      "kind": "packaging"
    },
    {
      "mpn": "TCAL6416RTWRRTWT",
      "kind": "packaging"
    },
    {
      "mpn": "TCAL6416RTWRPW",
      "kind": "packaging"
    },
    {
      "mpn": "TCAL6416RTWRPWR",
      "kind": "packaging"
    }
  ],
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  "discovery_pitch": "TCAL6416RTWR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "visibility": {
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  "updated_at": "2026-09-25T09:27:34.415Z"
}