CA-IS3721HG

{
  "slug": "ca-is3721hg",
  "version": "0.1.0",
  "type": "component",
  "description": "Chipanalog Digital Isolators, SOIC-8-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface ics",
    "ca-is3721hg",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ca-is3721hg.kicad_sym",
    "ca-is3721hg.kicad_mod",
    "ca-is3721hg.glb",
    "ca-is3721hg.step",
    "ca-is3721hg.lbr",
    "docs/hero.png",
    "docs/ca-is3721hg-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ca-is3721hg-hero.glb",
    "ca-is3721hg-hero.overlay.json",
    "ca-is3721hg-etched.glb"
  ],
  "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": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "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": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "41a8b7042195cd0c3d6f2d1b884c78bbe619873a7b3e99fc313b75f691aa962e",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}