HT4338ARZ

{
  "slug": "ht4338arz",
  "version": "0.1.0",
  "type": "component",
  "description": "HTCSEMI Real Time Clocks, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "clock-timing",
    "ht4338arz",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ht4338arz.kicad_sym",
    "ht4338arz.kicad_mod",
    "ht4338arz.glb",
    "ht4338arz.step",
    "ht4338arz.lbr",
    "docs/hero.png",
    "docs/ht4338arz-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ht4338arz-hero.glb",
    "ht4338arz-hero.overlay.json",
    "ht4338arz-etched.glb"
  ],
  "component": {
    "mpn": "HT4338ARZ",
    "manufacturer": "HTCSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Clock/Timing",
    "subcategory": "Real Time Clocks",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603181903189061632",
    "parts": {
      "symbol": "ht4338arz.kicad_sym",
      "footprint": "ht4338arz.kicad_mod",
      "model_3d": "ht4338arz-hero.glb",
      "model_3d_plain": "ht4338arz-etched.glb",
      "model_3d_step": "ht4338arz-etched.step",
      "model_3d_step_plain": "ht4338arz.step",
      "lbr": "ht4338arz.lbr"
    },
    "distributor_links": {
      "lcsc": "C5857715"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T08:32:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "error"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "X1",
        "type": "input",
        "description": "Connection for a standard 32.768kHz quartz crystal with a specified load capacitance of 12.5pF, and it is the input to the internal oscillator that can optionally be driven by an external 32.768kHz oscillator."
      },
      {
        "number": "2",
        "name": "X2",
        "type": "output",
        "description": "Output of the internal oscillator for the 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 standard 3V lithium cell or other energy source, which must be held between the datasheet's minimum and maximum limits (2.0 V to 3.5 V) for proper operation, and must be grounded if no backup supply is used."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Serial data input/output for the I2C-type two-wire interface; the pin is open drain and requires an external pullup resistor."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "Serial clock input for the two-wire interface that synchronizes data movement on SDA."
      },
      {
        "number": "7",
        "name": "SQW/OUT",
        "type": "output",
        "description": "Programmable square-wave/output driver, open drain, requiring an external pullup resistor, that outputs 1Hz, 4kHz, 8kHz or 32kHz when enabled and operates with either VCC or VBAT applied."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Primary power supply, which must be within the normal limits of 4.5 V to 5.5 V for full read/write access, and below which access is inhibited when a backup supply is connected."
      }
    ],
    "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 SOP8 pin figure text is garbled in extraction. Pin numbers were assigned from the figure's label; The SQW/OUT description says 4kHz, while the Control Register table lists 4,096 kHz and 8,192 kHz. T; The datasheet describes X1 as an oscillator input and X2 as an oscillator output rather than giving "
        ],
        "pages_sent": 12,
        "cost_usd": 0.0444,
        "at": "2026-10-19T08:32:08"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603181903189061632",
        "pages": 12,
        "sha256": "fed9f0f595cd65d0",
        "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": "ht4338arz.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": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ht4338arz-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": "e23fd86303e51df8c69b28995b2b4d9e8c990c965c9b9755f8e5e78bb4a6fe3d",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}