CA-IS3831LW

{
  "slug": "ca-is3831lw",
  "version": "0.1.0",
  "type": "component",
  "description": "Chipanalog Digital Isolators, SOIC-16-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "isolators",
    "ca-is3831lw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ca-is3831lw.kicad_sym",
    "ca-is3831lw.kicad_mod",
    "ca-is3831lw.glb",
    "ca-is3831lw.step",
    "ca-is3831lw.lbr",
    "docs/hero.png",
    "docs/ca-is3831lw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ca-is3831lw-hero.glb",
    "ca-is3831lw-hero.overlay.json",
    "ca-is3831lw-etched.glb"
  ],
  "component": {
    "mpn": "CA-IS3831LW",
    "manufacturer": "Chipanalog",
    "package": "SOIC-16-300mil",
    "pin_count": 16,
    "category": "Isolators",
    "subcategory": "Digital Isolators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b3967de9347490f612232084b72b6ced.pdf",
    "parts": {
      "symbol": "ca-is3831lw.kicad_sym",
      "footprint": "ca-is3831lw.kicad_mod",
      "model_3d": "ca-is3831lw-hero.glb",
      "model_3d_plain": "ca-is3831lw-etched.glb",
      "model_3d_step": "ca-is3831lw-etched.step",
      "model_3d_step_plain": "ca-is3831lw.step",
      "lbr": "ca-is3831lw.lbr"
    },
    "distributor_links": {
      "lcsc": "C7422567"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T22:09:02Z",
      "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 supply voltage, 2.375 V to 5.5 V recommended (7.0 V absolute maximum), bypassed with a 0.1 µF to 1 µF capacitor."
      },
      {
        "number": "2",
        "name": "GNDA",
        "type": "power_in",
        "description": "Side A ground reference."
      },
      {
        "number": "3",
        "name": "VI1",
        "type": "input",
        "description": "Side A logic input for channel 1, Schmitt-trigger input with a 2 V high / 0.8 V low threshold."
      },
      {
        "number": "4",
        "name": "VI2",
        "type": "input",
        "description": "Side A logic input for channel 2, Schmitt-trigger input with a 2 V high / 0.8 V low threshold."
      },
      {
        "number": "5",
        "name": "VO3",
        "type": "output",
        "description": "Side A logic output of the reverse channel 3 on CA-IS3831, enabled by ENA."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; may be left floating or connected to VDD or GND."
      },
      {
        "number": "7",
        "name": "ENA",
        "type": "input",
        "description": "Side A output enable for VO3, active high or floating, internally pulled up to local VDD; low puts VO3 in high impedance."
      },
      {
        "number": "8",
        "name": "GNDA",
        "type": "power_in",
        "description": "Side A ground reference."
      },
      {
        "number": "9",
        "name": "GNDB",
        "type": "power_in",
        "description": "Side B ground reference."
      },
      {
        "number": "10",
        "name": "ENB",
        "type": "input",
        "description": "Side B output enable for VO1 and VO2, active high or floating, internally pulled up to local VDD; low puts VO1 and VO2 in high impedance."
      },
      {
        "number": "11",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; may be left floating or connected to VDD or GND."
      },
      {
        "number": "12",
        "name": "VI3",
        "type": "input",
        "description": "Side B logic input of the reverse channel 3 on CA-IS3831, Schmitt-trigger input with a 2 V high / 0.8 V low threshold."
      },
      {
        "number": "13",
        "name": "VO2",
        "type": "output",
        "description": "Side B logic output for channel 2, rail-to-rail with about 50 Ω output impedance, drives up to 4 mA at 5 V."
      },
      {
        "number": "14",
        "name": "VO1",
        "type": "output",
        "description": "Side B logic output for channel 1, rail-to-rail with about 50 Ω output impedance, drives up to 4 mA at 5 V."
      },
      {
        "number": "15",
        "name": "GNDB",
        "type": "power_in",
        "description": "Side B ground reference."
      },
      {
        "number": "16",
        "name": "VDDB",
        "type": "power_in",
        "description": "Side B supply voltage, 2.375 V to 5.5 V recommended (7.0 V absolute maximum), bypassed with a 0.1 µF to 1 µF 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 datasheet names the package SOIC16-WB (W), 10.30 mm x 7.50 mm. It never states '300mil'. I took ; Pins 5, 7 and 12 are shared between CA-IS3830 and CA-IS3831 in the table. I assigned the CA-IS3831 f"
        ],
        "pages_sent": 24,
        "cost_usd": 0.2101,
        "at": "2026-10-22T22:08:42"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/b3967de9347490f612232084b72b6ced.pdf",
        "pages": 24,
        "sha256": "2fb032ffaaf8a680",
        "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": "ca-is3831lw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ca-is3831lw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          9.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "a41aa5ee95d3261c73f9a3ee8251c404715e3c4968b3294123469f2518b66292",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}