DS1307Z+T&R

{
  "slug": "ds1307z-t-r",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Inc Maxim Integrated Real Time Clocks, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "ds1307z+t&r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ds1307z-t-r.kicad_sym",
    "ds1307z-t-r.kicad_mod",
    "ds1307z-t-r.glb",
    "ds1307z-t-r.step",
    "ds1307z-t-r.lbr",
    "docs/hero.png",
    "docs/ds1307z-t-r-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ds1307z-t-r-hero.glb",
    "ds1307z-t-r-hero.overlay.json",
    "ds1307z-t-r-etched.glb"
  ],
  "component": {
    "mpn": "DS1307Z+T&R",
    "manufacturer": "Analog Devices Inc Maxim Integrated",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Real Time Clocks",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175699468095488",
    "parts": {
      "symbol": "ds1307z-t-r.kicad_sym",
      "footprint": "ds1307z-t-r.kicad_mod",
      "model_3d": "ds1307z-t-r-hero.glb",
      "model_3d_plain": "ds1307z-t-r-etched.glb",
      "model_3d_step": "ds1307z-t-r-etched.step",
      "model_3d_step_plain": "ds1307z-t-r.step",
      "lbr": "ds1307z-t-r.lbr"
    },
    "distributor_links": {
      "lcsc": "C9868",
      "digikey": "DS1307Z+T&RTR-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T21:52:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "DS1307Z+T&RTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "X1",
        "type": "input",
        "description": "Input to the internal 32.768kHz oscillator, designed for a crystal with 12.5pF specified load capacitance, and can optionally be driven by an external 32.768kHz oscillator."
      },
      {
        "number": "2",
        "name": "X2",
        "type": "passive",
        "description": "Output of the internal oscillator for the 32.768kHz crystal, which is left floating when an external oscillator is connected to X1."
      },
      {
        "number": "3",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup supply input for a 3V lithium cell or other energy source, which must be held between 2.0V and 3.5V for proper operation; VBAT must be grounded if no backup supply is used."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference; all device voltages are referenced to ground."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data input/output, open-drain, requiring an external pullup whose voltage can be up to 5.5V regardless of VCC."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input used to synchronize data movement on the serial interface, with a pullup voltage up to 5.5V regardless of VCC."
      },
      {
        "number": "7",
        "name": "SQW/OUT",
        "type": "output",
        "description": "Open-drain square-wave/output driver that outputs 1Hz, 4.096kHz, 8.192kHz or 32.768kHz when enabled, requires an external pullup up to 5.5V regardless of VCC, and may be left floating if unused."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Primary power supply, 4.5V to 5.5V; the device is fully accessible within normal limits, and reads and writes are inhibited when a backup supply is connected and VCC falls below VTP."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin table gives VCC range 4.5V to 5.5V, and the VCC description reflects the datasheet text as print; Datasheet pin table is for the 8-pin SO (150 mils) package, which matches the DS1307Z+T&R ordering e"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0721,
        "at": "2026-10-18T21:50:20"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175699468095488",
        "pages": 14,
        "sha256": "c81233053aa1da15",
        "source_tier": "lcsc"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "ds1307z-t-r.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ds1307z-t-r-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "71a9d1c64ce6b7c929fac5f50d6f9b98fab1722e5bd659bff64db7077fde7934",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}