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Ray Set visibility: public dbfded8 5h ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "ca-is3721hg",
  "title": "CA-IS3721HG",
  "brief": "Chipanalog Digital Isolators, SOIC-8-300mil. 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",
    "interface ics",
    "ca-is3721hg",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CA-IS3721HG",
    "manufacturer": "Chipanalog",
    "package": "SOIC-8-300mil",
    "pin_count": 8,
    "category": "Interface ICs",
    "subcategory": "Digital Isolators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/604064461aa0c12ec9a7680be1fb8a63.pdf",
    "parts": {
      "symbol": "ca-is3721hg.kicad_sym",
      "footprint": "ca-is3721hg.kicad_mod",
      "model_3d": "ca-is3721hg-hero.glb",
      "model_3d_plain": "ca-is3721hg-etched.glb",
      "model_3d_step": "ca-is3721hg-etched.step",
      "model_3d_step_plain": "ca-is3721hg.step",
      "lbr": "ca-is3721hg.lbr"
    },
    "distributor_links": {
      "lcsc": "C528650"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T21:28:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDDA",
        "type": "power_in",
        "description": "Side A power supply, operating range 2.375 V to 5.5 V relative to GNDA, with a 0.1 µF to 1 µF bypass capacitor."
      },
      {
        "number": "2",
        "name": "VI1",
        "type": "input",
        "description": "Side A digital input for channel 1, which is transmitted to VO1 on side B (CA-IS3721)."
      },
      {
        "number": "3",
        "name": "VO2",
        "type": "output",
        "description": "Side A digital output for channel 2, which follows VI2 from side B (CA-IS3721); output drive is 4 mA at 5 V and defaults high on the H version when input power or signal is lost."
      },
      {
        "number": "4",
        "name": "GNDA",
        "type": "power_in",
        "description": "Side A ground, the ground reference for VDDA and the side A signals."
      },
      {
        "number": "5",
        "name": "GNDB",
        "type": "power_in",
        "description": "Side B ground, the ground reference for VDDB and the side B signals."
      },
      {
        "number": "6",
        "name": "VI2",
        "type": "input",
        "description": "Side B digital input for channel 2, which is transmitted to VO2 on side A (CA-IS3721)."
      },
      {
        "number": "7",
        "name": "VO1",
        "type": "output",
        "description": "Side B digital output for channel 1, which follows VI1 from side A (CA-IS3721); output drive is 4 mA at 5 V and defaults high on the H version when input power or signal is lost."
      },
      {
        "number": "8",
        "name": "VDDB",
        "type": "power_in",
        "description": "Side B power supply, operating range 2.375 V to 5.5 V relative to GNDB, with a 0.1 µF to 1 µF bypass capacitor."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin table is shared by the CA-IS3720/21/22 and the SOIC8 and SOIC8-WB packages. Pins 2, 3, 6 and"
        ],
        "pages_sent": 22,
        "cost_usd": 0.1837,
        "at": "2026-10-22T21:28:22"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/604064461aa0c12ec9a7680be1fb8a63.pdf",
        "pages": 22,
        "sha256": "39fb33a8351462e1",
        "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": "ca-is3721hg.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ca-is3721hg-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "41a8b7042195cd0c3d6f2d1b884c78bbe619873a7b3e99fc313b75f691aa962e",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Chipanalog",
      "Package": "SOIC-8-300mil",
      "Category": "Interface ICs",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "39fb33a8351462e1b4fbeef246a320e03d586fae8398bc91617c95cba94ae7f1",
      "rows": [
        {
          "name": "Supply Voltage",
          "symbol": "VDDA, VDDB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Voltage at Ax, Bx, ENx",
          "symbol": "Vin",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.5,
          "typ": null,
          "max": null,
          "conditions": "max VDDA+0.5, must not exceed 6 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Current",
          "symbol": "IO",
          "kind": "absolute_maximum",
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          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
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          "typ": null,
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          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Storage Temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "ESD HBM",
          "symbol": "VESD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -4000,
          "typ": null,
          "max": 4000,
          "conditions": "HBM per ANSI/ESDA/JEDEC JS-001, all pins",
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        {
          "name": "ESD CDM",
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          "unit": "V",
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          "typ": null,
          "max": 1000,
          "conditions": "CDM per JESD22-C101, all pins",
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          "source": "datasheet"
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        {
          "name": "Supply Voltage",
          "symbol": "VDDA, VDDB",
          "kind": "recommended_operating",
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          "min": 2.375,
          "typ": 3.3,
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        {
          "name": "VDD Undervoltage Threshold Rising",
          "symbol": "VDD(UVLO+)",
          "kind": "recommended_operating",
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          "min": 1.95,
          "typ": 2.24,
          "max": 2.375,
          "conditions": "Supply voltage rising",
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          "source": "datasheet"
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        {
          "name": "VDD Undervoltage Threshold Falling",
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          "kind": "recommended_operating",
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          "min": 1.88,
          "typ": 2.1,
          "max": 2.325,
          "conditions": "Supply voltage falling",
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        {
          "name": "UVLO Hysteresis",
          "symbol": "VHYS(UVLO)",
          "kind": "recommended_operating",
          "unit": "mV",
          "min": 70,
          "typ": 140,
          "max": 250,
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          "source": "datasheet"
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        {
          "name": "High-level Output Current",
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          "kind": "recommended_operating",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": -4,
          "conditions": "VDDO = 5V",
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          "source": "datasheet"
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        {
          "name": "High-level Output Current",
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          "conditions": "VDDO = 3.3V",
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          "source": "datasheet"
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        {
          "name": "High-level Output Current",
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          "conditions": "VDDO = 2.5V",
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          "source": "datasheet"
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          "conditions": "VDDO = 5V",
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        {
          "name": "Low-level Output Current",
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          "conditions": "VDDO = 2.5V",
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          "source": "datasheet"
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        {
          "name": "High-level Input Voltage",
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          "kind": "recommended_operating",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "Low-level Input Voltage",
          "symbol": "VIL",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "",
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        },
        {
          "name": "Data Rate",
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          "min": 0,
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        {
          "name": "Ambient Temperature",
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          "typ": 27,
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          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "Junction-to-ambient thermal resistance",
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          "kind": "thermal",
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          "min": null,
          "typ": 92.3,
          "max": null,
          "conditions": "G (SOIC) 8 pins",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case(top) thermal resistance",
          "symbol": "RθJC(top)",
          "kind": "thermal",
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          "typ": 45.3,
          "max": null,
          "conditions": "G (SOIC) 8 pins",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Junction-to-board thermal resistance",
          "symbol": "RθJB",
          "kind": "thermal",
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          "min": null,
          "typ": 50.5,
          "max": null,
          "conditions": "G (SOIC) 8 pins",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Junction-to-top characterization parameter",
          "symbol": "ψJT",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 14,
          "max": null,
          "conditions": "G (SOIC) 8 pins",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Junction-to-board characterization parameter",
          "symbol": "ψJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 49.3,
          "max": null,
          "conditions": "G (SOIC) 8 pins",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Maximum Power Dissipation",
          "symbol": "PD",
          "kind": "electrical",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "CA-IS3721; VDDA = VDDB = 5.5 V, CL = 15 pF, TJ = 150°C, 75-MHz 50% duty cycle square wave",
          "source_page": 6,
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        },
        {
          "name": "Maximum Power Dissipation on Side-A",
          "symbol": "PDA",
          "kind": "electrical",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "CA-IS3721",
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          "source": "datasheet"
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        {
          "name": "Maximum Power Dissipation on Side-B",
          "symbol": "PDB",
          "kind": "electrical",
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          "typ": null,
          "max": 60,
          "conditions": "CA-IS3721",
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        },
        {
          "name": "Maximum withstanding isolation voltage",
          "symbol": "VISO",
          "kind": "electrical",
          "unit": "VRMS",
          "min": null,
          "typ": 5000,
          "max": null,
          "conditions": "UL 1577; VTEST = VISO, t = 60 s; G package",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Maximum repetitive peak isolation voltage",
          "symbol": "VIORM",
          "kind": "electrical",
          "unit": "VPK",
          "min": null,
          "typ": 1414,
          "max": null,
          "conditions": "AC voltage (bipolar); G package",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Maximum transient isolation voltage",
          "symbol": "VIOTM",
          "kind": "electrical",
          "unit": "VPK",
          "min": null,
          "typ": 7070,
          "max": null,
          "conditions": "VTEST = VIOTM, t = 60 s; G package",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "High-level Output Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 4.8,
          "max": null,
          "conditions": "VDD = 5 V ±10%; IOH = -4mA; min VDDO-0.4",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "High-level Output Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3.1,
          "max": null,
          "conditions": "VDD = 3.3 V ±10%; IOH = -4mA; min VDDO-0.4",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "High-level Output Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 2.3,
          "max": null,
          "conditions": "VDD = 2.5 V ±5%; IOH = -4mA; min VDDO-0.4",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Low-level Output Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": 0.4,
          "conditions": "IOL = 4mA",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Positive-going Input Threshold",
          "symbol": "VIT+(IN)",
          "kind": "electrical",
          "unit": "V",
          "min": 1.4,
          "typ": 1.67,
          "max": 1.9,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Negative-going Input Threshold",
          "symbol": "VIT-(IN)",
          "kind": "electrical",
          "unit": "V",
          "min": 1,
          "typ": 1.23,
          "max": 1.4,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Input Threshold Hysteresis",
          "symbol": "VI(HYS)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.3,
          "typ": 0.44,
          "max": 0.5,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "High-Level Input Leakage Current",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "VIH = VDDA at Ax or Bx or ENx",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Low-Level Input Leakage Current",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "µA",
          "min": -4,
          "typ": null,
          "max": null,
          "conditions": "VIL = 0 V at Ax or Bx",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Output Impedance",
          "symbol": "ZO",
          "kind": "electrical",
          "unit": "Ω",
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