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Ray Set visibility: public 3806361 9h ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "ds3231sn-t-r",
  "title": "DS3231SN#T&R",
  "brief": "Analog Devices Inc Maxim Integrated Real Time Clocks, SOIC-16-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "clock-timing",
    "ds3231sn#t&r",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "DS3231SN#T&R",
    "manufacturer": "Analog Devices Inc Maxim Integrated",
    "package": "SOIC-16-300mil",
    "pin_count": 16,
    "category": "Clock/Timing",
    "subcategory": "Real Time Clocks",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175691545595904",
    "parts": {
      "symbol": "ds3231sn-t-r.kicad_sym",
      "footprint": "ds3231sn-t-r.kicad_mod",
      "model_3d": "ds3231sn-t-r-hero.glb",
      "model_3d_plain": "ds3231sn-t-r-etched.glb",
      "model_3d_step": "ds3231sn-t-r-etched.step",
      "model_3d_step_plain": "ds3231sn-t-r.step",
      "lbr": "ds3231sn-t-r.lbr"
    },
    "distributor_links": {
      "lcsc": "C9866"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T13:54:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "32kHz",
        "type": "output",
        "description": "Open-drain 32kHz output that requires an external pullup resistor, operates on either supply when enabled, and may be left open if not used."
      },
      {
        "number": "2",
        "name": "VCC",
        "type": "power_in",
        "description": "DC power pin for the primary supply, to be decoupled with a 0.1µF to 1.0µF capacitor, and connected to ground if not used."
      },
      {
        "number": "3",
        "name": "INT/SQW",
        "type": "output",
        "description": "Open-drain active-low interrupt or square-wave output requiring a pullup to a supply of 5.5V or less, which may be up to 5.5V regardless of VCC, and may be left unconnected if not used."
      },
      {
        "number": "4",
        "name": "RST",
        "type": "bidirectional",
        "description": "Open-drain active-low reset input/output that is driven low when VCC falls below VPF and has an internal 50k nominal pullup to VCC, so no external pullup should be connected."
      },
      {
        "number": "5",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No connection pin that the datasheet states must be connected to ground."
      },
      {
        "number": "6",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No connection pin that the datasheet states must be connected to ground."
      },
      {
        "number": "7",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No connection pin that the datasheet states must be connected to ground."
      },
      {
        "number": "8",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No connection pin that the datasheet states must be connected to ground."
      },
      {
        "number": "9",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No connection pin that the datasheet states must be connected to ground."
      },
      {
        "number": "10",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No connection pin that the datasheet states must be connected to ground."
      },
      {
        "number": "11",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No connection pin that the datasheet states must be connected to ground."
      },
      {
        "number": "12",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No connection pin that the datasheet states must be connected to ground."
      },
      {
        "number": "13",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the device."
      },
      {
        "number": "14",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup power-supply input to be decoupled with a 0.1µF to 1.0µF low-leakage capacitor, and connected to ground if VBAT is not used."
      },
      {
        "number": "15",
        "name": "SDA",
        "type": "bidirectional",
        "description": "Open-drain I2C serial data input/output requiring an external pullup resistor, with the pullup voltage up to 5.5V regardless of the voltage on VCC."
      },
      {
        "number": "16",
        "name": "SCL",
        "type": "input",
        "description": "I2C serial clock input used to synchronize data movement, with up to 5.5V allowed regardless of the voltage on VCC."
      }
    ],
    "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 descriptions say 'N.C. No Connection. Must be connected to ground' (page 9) and page 18 says all; The MPN suffix '#T&R' (tape and reel) is not described in the datasheet text. The datasheet lists th; The datasheet describes these outputs as open-drain; KiCad has a separate open_collector class, but "
        ],
        "pages_sent": 9,
        "cost_usd": 0.0676,
        "at": "2026-10-18T13:54:33"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175691545595904",
        "pages": 20,
        "sha256": "ec27766ea72ac63e",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ds3231sn-t-r.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ds3231sn-t-r-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "ee7479176f3d7b52fa6fa706e74b8478fe3d0d946815a75b36bf64be28d7165a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices Inc Maxim Integrated",
      "Package": "SOIC-16-300mil",
      "Category": "Clock/Timing",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "ec27766ea72ac63e94aff3d81536fcfd37067072a9ea40037017562dc9b5abfb",
      "rows": [
        {
          "name": "Supply Voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.3,
          "typ": 3.3,
          "max": 5.5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
          "symbol": "VBAT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.3,
          "typ": 3,
          "max": 5.5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Logic 0 Input SDA, SCL",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Voltage Range on VCC, VBAT, 32kHz, SCL, SDA, RST, INT/SQW Relative to Ground",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "Relative to ground",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range (noncondensing)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
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        },
        {
          "name": "Junction Temperature",
          "symbol": "",
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          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power-Fail Voltage",
          "symbol": "VPF",
          "kind": "electrical",
          "unit": "V",
          "min": 2.45,
          "typ": 2.575,
          "max": 2.7,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Active Supply Current",
          "symbol": "ICCA",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "VCC = 3.63V (Notes 3, 4)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Active Supply Current",
          "symbol": "ICCA",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 300,
          "conditions": "VCC = 5.5V (Notes 3, 4)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Standby Supply Current",
          "symbol": "ICCS",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 110,
          "conditions": "VCC = 3.63V; I2C bus inactive, 32kHz output on, SQW output off (Note 4)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Standby Supply Current",
          "symbol": "ICCS",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 170,
          "conditions": "VCC = 5.5V; I2C bus inactive, 32kHz output on, SQW output off (Note 4)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature Conversion Current",
          "symbol": "ICCSCONV",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 575,
          "conditions": "VCC = 3.63V; I2C bus inactive, 32kHz output on, SQW output off",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Temperature Conversion Current",
          "symbol": "ICCSCONV",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 650,
          "conditions": "VCC = 5.5V; I2C bus inactive, 32kHz output on, SQW output off",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Logic 0 Output, 32kHz, INT/SQW, SDA",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL = 3mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Logic 0 Output, RST",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOL = 1mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Leakage Current 32kHz, INT/SQW, SDA",
          "symbol": "ILO",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": 0,
          "max": 1,
          "conditions": "Output high impedance",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Leakage SCL",
          "symbol": "ILI",
          "kind": "electrical",
          "unit": "μA",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "RST Pin I/O Leakage",
          "symbol": "IOL",
          "kind": "electrical",
          "unit": "μA",
          "min": -200,
          "typ": null,
          "max": 10,
          "conditions": "RST high impedance (Note 5)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "VBAT Leakage Current (VCC Active)",
          "symbol": "IBATLKG",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 25,
          "max": 100,
          "conditions": "VCC active",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Frequency Stability vs. Temperature (Industrial), 0°C to +40°C",
          "symbol": "f/fOUT",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "VCC = 3.3V or VBAT = 3.3V, aging offset = 00h",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "Frequency Stability vs. Temperature (Industrial), >40°C to +85°C",
          "symbol": "f/fOUT",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -3.5,
          "typ": null,
          "max": 3.5,
          "conditions": "VCC = 3.3V or VBAT = 3.3V, aging offset = 00h",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Temperature Accuracy",
          "symbol": "Temp",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "VCC = 3.3V or VBAT = 3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Crystal Aging, first year",
          "symbol": "f/fO",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "After reflow, not production tested",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Crystal Aging, 0–10 years",
          "symbol": "f/fO",
          "kind": "tolerance",
          "unit": "ppm",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "After reflow, not production tested",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Active Battery Current",
          "symbol": "IBATA",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "VBAT = 3.63V; EOSC = 0, BBSQW = 0, SCL = 400kHz (Note 4)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Active Battery Current",
          "symbol": "IBATA",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "VBAT = 5.5V; EOSC = 0, BBSQW = 0, SCL = 400kHz (Note 4)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Timekeeping Battery Current",
          "symbol": "IBATT",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 0.84,
          "max": 3,
          "conditions": "VBAT = 3.63V; EOSC = 0, BBSQW = 0, EN32kHz = 1, SCL = SDA = 0V or VBAT (Note 4)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Timekeeping Battery Current",
          "symbol": "IBATT",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1,
          "max": 3.5,
          "conditions": "VBAT = 5.5V; EOSC = 0, BBSQW = 0, EN32kHz = 1, SCL = SDA = 0V or VBAT (Note 4)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Temperature Conversion Current",
          "symbol": "IBATTC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 575,
          "conditions": "VBAT = 3.63V; EOSC = 0, BBSQW = 0, SCL = SDA = 0V or VBAT",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Temperature Conversion Current",
          "symbol": "IBATTC",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 650,
          "conditions": "VBAT = 5.5V; EOSC = 0, BBSQW = 0, SCL = SDA = 0V or VBAT",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "SCL Clock Frequency",
          "symbol": "fSCL",
          "kind": "timing",
          "unit": "kHz",
          "min": null,
          "typ": null,
          "max": 400,
          "conditions": "Fast mode",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "SCL Clock Frequency",
          "symbol": "fSCL",
          "kind": "timing",
          "unit": "kHz",
          "min": 0,
          "typ": null,
          "max": 100,
          "conditions": "Standard mode",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Bus Free Time Between STOP and START Conditions",
          "symbol": "tBUF",
          "kind": "timing",
          "unit": "μs",
          "min": 1.3,
          "typ": null,
          "max": null,
          "conditions": "Fast mode",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Bus Free Time Between STOP and START Conditions",
          "symbol": "tBUF",
          "kind": "timing",
          "unit": "μs",
          "min": 4.7,
          "typ": null,
          "max": null,
          "conditions": "Standard mode",
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