ISL1208IB8Z-TK

{
  "schema_version": 1,
  "type": "component",
  "slug": "isl1208ib8z-tk",
  "title": "ISL1208IB8Z-TK",
  "brief": "RENESAS Real-time Clocks (RTC), SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "rtc",
    "isl1208ib8z-tk"
  ],
  "component": {
    "mpn": "ISL1208IB8Z-TK",
    "manufacturer": "RENESAS",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "RTC",
    "subcategory": "Real-time Clocks (RTC)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/aedd5b97e2794a8789e6d97aad76031c.pdf",
    "parts": {
      "symbol": "isl1208ib8z-tk.kicad_sym",
      "footprint": "isl1208ib8z-tk.kicad_mod",
      "model_3d": "isl1208ib8z-tk-etched.glb",
      "model_3d_plain": "isl1208ib8z-tk.glb",
      "model_3d_step": "isl1208ib8z-tk-etched.step",
      "model_3d_step_plain": "isl1208ib8z-tk.step",
      "lbr": "isl1208ib8z-tk.lbr"
    },
    "distributor_links": {
      "digikey": "ISL1208IB8Z-TKTR-ND",
      "lcsc": "C18586"
    },
    "pins": [
      {
        "number": "1",
        "name": "X1",
        "type": "input",
        "description": "Input of the internal inverting amplifier for the 32.768kHz crystal oscillator. Connects to one pin of an external 32.768kHz quartz crystal, or can be driven directly from a 32.768kHz source."
      },
      {
        "number": "2",
        "name": "X2",
        "type": "output",
        "description": "Output of the internal inverting amplifier for the 32.768kHz crystal oscillator. Connects to the other pin of the external 32.768kHz quartz crystal. Leave floating when X1 is driven by an external clock source."
      },
      {
        "number": "3",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup supply input (1.8V to 5.5V). Supplies power to the device when VDD fails (below VTRIP ~2.2V typ). Tie to ground if unused. Typical battery supply current 400nA."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C Serial Data line. Bidirectional open-drain pin used to transfer serial data into and out of the device. May be wire-OR'ed with other open-drain/open-collector outputs. Requires an external pull-up resistor (≥1kΩ)."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I2C Serial Clock input used to clock all serial data into and out of the device. Supports up to 400kHz data transfer rate. Requires an external pull-up resistor."
      },
      {
        "number": "7",
        "name": "IRQ/FOUT",
        "type": "output",
        "description": "Multi-function open-drain output pin, configurable via the configuration register as either an active-low alarm interrupt (IRQ) or as a selectable frequency output (FOUT) with 15 selectable frequencies. VOL = 0.4V max at IOL = 3mA (VDD=5V)."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply input, 2.7V to 5.5V. Typical supply current 2μA (VDD=5V, I2C idle) or 40μA when I2C is active."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/aedd5b97e2794a8789e6d97aad76031c.pdf",
        "pages": 21,
        "sha256": "9e849503d6495df5",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "isl1208ib8z-tk.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "isl1208ib8z-tk-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "53113c8440d0e8a52ee7c191ba351654e4e081bdf8304048dedab0b7251f8cc3",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "RENESAS",
      "Package": "SOIC-8",
      "Category": "RTC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "isl1208ib8z-tk"
  ],
  "discovery_pitch": "ISL1208IB8Z-TK (RENESAS) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "isl1208ib8z-tk.kicad_sym",
    "isl1208ib8z-tk.kicad_mod",
    "isl1208ib8z-tk.glb",
    "isl1208ib8z-tk.step",
    "isl1208ib8z-tk-etched.step",
    "isl1208ib8z-tk.lbr",
    "docs/hero.png",
    "docs/isl1208ib8z-tk-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "ISL1208IB8Z-TK",
      "kind": "packaging"
    },
    {
      "mpn": "ISL1208IB8Z-TKIB8-TK",
      "kind": "packaging"
    },
    {
      "mpn": "ISL1208IB8Z-TKIU8",
      "kind": "packaging"
    },
    {
      "mpn": "ISL1208IB8Z-TKIU8-TK",
      "kind": "packaging"
    },
    {
      "mpn": "ISL1208IB8Z-TKIU8Z",
      "kind": "packaging"
    },
    {
      "mpn": "ISL1208IB8Z-TKIU8Z-TK",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-24T22:58:44.690Z"
}