DS1388Z-33+T&R

{
  "slug": "ds1388z-33-t-r",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Inc Maxim Integrated Real Time Clocks, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "ds1388z-33+t&r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ds1388z-33-t-r.kicad_sym",
    "ds1388z-33-t-r.kicad_mod",
    "ds1388z-33-t-r.glb",
    "ds1388z-33-t-r.step",
    "ds1388z-33-t-r.lbr",
    "docs/hero.png",
    "docs/ds1388z-33-t-r-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ds1388z-33-t-r-hero.glb",
    "ds1388z-33-t-r-hero.overlay.json",
    "ds1388z-33-t-r-etched.glb"
  ],
  "component": {
    "mpn": "DS1388Z-33+T&R",
    "manufacturer": "Analog Devices Inc Maxim Integrated",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Real Time Clocks",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590227755083603968",
    "parts": {
      "symbol": "ds1388z-33-t-r.kicad_sym",
      "footprint": "ds1388z-33-t-r.kicad_mod",
      "model_3d": "ds1388z-33-t-r-hero.glb",
      "model_3d_plain": "ds1388z-33-t-r-etched.glb",
      "model_3d_step": "ds1388z-33-t-r-etched.step",
      "model_3d_step_plain": "ds1388z-33-t-r.step",
      "lbr": "ds1388z-33-t-r.lbr"
    },
    "distributor_links": {
      "lcsc": "C118483"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T10:47:25Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "X1",
        "type": "passive",
        "description": "Connection for a standard 32.768kHz quartz crystal (specified load capacitance CL of 6.0pF); X1 is the oscillator input 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, left unconnected when an external oscillator drives pin X1."
      },
      {
        "number": "3",
        "name": "VBACKUP",
        "type": "power_in",
        "description": "Secondary power supply input that must be held between 1.3V and 5.5V for proper operation, and must be connected to ground if not used."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C serial data input/output, open drain, requiring an external pullup resistor; the datasheet specifies a logic 0 output limit of VOL = 0.15 x VCC at up to 3 mA."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input used to synchronize data movement on the serial interface."
      },
      {
        "number": "7",
        "name": "RST",
        "type": "bidirectional",
        "description": "Active-low open-drain reset output that is driven low when VCC falls below VPF and also accepts a debounced pushbutton reset input; it has an internal 50k nominal pullup to VCC and no external pullup should be connected."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "DC power pin for the primary power supply (supply range for DS1388Z-33 is 2.97V to 3.63V per the recommended operating conditions)."
      }
    ],
    "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: The T&R suffix denotes tape-and-reel packaging only. Ordering information (page 1) lists DS1388Z-33+; The SO top-view diagram text on page 1 is garbled in extraction, so the pin-to-position mapping was ; Pin types are inferred for KiCad ERC: X1 and X2 are marked passive because they are crystal connecti"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0419,
        "at": "2026-10-18T10:45:48"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590227755083603968",
        "pages": 19,
        "sha256": "2650ce0d603f3f1f",
        "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": "ds1388z-33-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": "ds1388z-33-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": "28e5c746bdd7a08433a41c5414435b19c1fe99d9c4ed3bc8b7a0a0853e3b11bb",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}