XL9555

{
  "schema_version": 1,
  "type": "component",
  "slug": "xl9555",
  "title": "XL9555",
  "brief": "XINLUDA I/O Expanders, TSSOP-24. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "xl9555"
  ],
  "component": {
    "mpn": "XL9555",
    "manufacturer": "XINLUDA",
    "package": "TSSOP-24",
    "pin_count": 24,
    "category": "Interface",
    "subcategory": "I/O Expanders",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ba4da8ed434527fc8fc1e1909c81d240.pdf",
    "parts": {
      "symbol": "xl9555.kicad_sym",
      "footprint": "xl9555.kicad_mod",
      "model_3d": "xl9555-etched.glb",
      "model_3d_plain": "xl9555.glb",
      "model_3d_step": "xl9555-etched.step",
      "model_3d_step_plain": "xl9555.step",
      "lbr": "xl9555.lbr"
    },
    "distributor_links": {
      "lcsc": "C609791"
    },
    "pins": [
      {
        "number": "1",
        "name": "INT",
        "type": "output",
        "description": "Active-LOW open-drain interrupt output. Asserted when any input state differs from the corresponding Input Port register value. Requires an external pull-up resistor to VCC."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "Hardware I2C address bit 1. Tie directly to VCC or GND to set the device slave address; must not float and must not change while powered."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "Hardware I2C address bit 2. Tie directly to VCC or GND to set the device slave address; must not float and must not change while powered."
      },
      {
        "number": "4",
        "name": "P00",
        "type": "bidirectional",
        "description": "Port 0 bit 0 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "5",
        "name": "P01",
        "type": "bidirectional",
        "description": "Port 0 bit 1 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "6",
        "name": "P02",
        "type": "bidirectional",
        "description": "Port 0 bit 2 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "7",
        "name": "P03",
        "type": "bidirectional",
        "description": "Port 0 bit 3 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "8",
        "name": "P04",
        "type": "bidirectional",
        "description": "Port 0 bit 4 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "9",
        "name": "P05",
        "type": "bidirectional",
        "description": "Port 0 bit 5 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "10",
        "name": "P06",
        "type": "bidirectional",
        "description": "Port 0 bit 6 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "11",
        "name": "P07",
        "type": "bidirectional",
        "description": "Port 0 bit 7 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Supply ground reference (0 V)."
      },
      {
        "number": "13",
        "name": "P10",
        "type": "bidirectional",
        "description": "Port 1 bit 0 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "14",
        "name": "P11",
        "type": "bidirectional",
        "description": "Port 1 bit 1 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "15",
        "name": "P12",
        "type": "bidirectional",
        "description": "Port 1 bit 2 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "16",
        "name": "P13",
        "type": "bidirectional",
        "description": "Port 1 bit 3 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "17",
        "name": "P14",
        "type": "bidirectional",
        "description": "Port 1 bit 4 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "18",
        "name": "P15",
        "type": "bidirectional",
        "description": "Port 1 bit 5 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "19",
        "name": "P16",
        "type": "bidirectional",
        "description": "Port 1 bit 6 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "20",
        "name": "P17",
        "type": "bidirectional",
        "description": "Port 1 bit 7 general-purpose I/O. Push-pull output; input at power-on reset. XL9555 has an internal ~100 kohm pull-up to VCC on this pin."
      },
      {
        "number": "21",
        "name": "A0",
        "type": "input",
        "description": "Hardware I2C address bit 0. Tie directly to VCC or GND to set the device slave address; must not float and must not change while powered."
      },
      {
        "number": "22",
        "name": "SCL",
        "type": "input",
        "description": "I2C-bus / SMBus serial clock input. Requires an external pull-up resistor to VCC. Standard-mode (100 kHz) and Fast-mode (400 kHz) capable."
      },
      {
        "number": "23",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C-bus / SMBus serial data line (open-drain). Requires an external pull-up resistor to VCC."
      },
      {
        "number": "24",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply voltage, 2.3 V to 5.5 V (absolute max 6 V). Bypass locally with a ceramic decoupling capacitor to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ba4da8ed434527fc8fc1e1909c81d240.pdf",
        "pages": 25,
        "sha256": "80ea36f92c4bf704",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.8625,
        -3.575
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-24_4.4x7.8mm_P0.65mm@sha256:951159bb3a87997b",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "xl9555.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "706322f42d9793ebf28d5b80100a68bfa8769998a00b78acadf7af937fc1454f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "xl9555-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "24cf6995cd63dcb7f544a750ace4261511944417c398829106bb8334bd433d36",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "XINLUDA",
      "Package": "TSSOP-24",
      "Category": "Interface",
      "Pins": "24"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "xl9555"
  ],
  "discovery_pitch": "XL9555 (XINLUDA) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "xl9555.kicad_sym",
    "xl9555.kicad_mod",
    "xl9555.glb",
    "xl9555.step",
    "xl9555-etched.step",
    "xl9555.lbr",
    "docs/hero.png",
    "docs/xl9555-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "XL9555",
      "kind": "packaging"
    },
    {
      "mpn": "XL9555D",
      "kind": "packaging"
    },
    {
      "mpn": "XL9555SS",
      "kind": "packaging"
    },
    {
      "mpn": "XL9555QF24",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T14:37:52.398Z"
}