CA-IS3740LN

{
  "slug": "ca-is3740ln",
  "version": "0.1.0",
  "type": "component",
  "description": "Chipanalog Digital Isolators, SOIC-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface ics",
    "ca-is3740ln",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ca-is3740ln.kicad_sym",
    "ca-is3740ln.kicad_mod",
    "ca-is3740ln.glb",
    "ca-is3740ln.step",
    "ca-is3740ln.lbr",
    "docs/hero.png",
    "docs/ca-is3740ln-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ca-is3740ln-hero.glb",
    "ca-is3740ln-hero.overlay.json",
    "ca-is3740ln-etched.glb"
  ],
  "component": {
    "mpn": "CA-IS3740LN",
    "manufacturer": "Chipanalog",
    "package": "SOIC-16",
    "pin_count": 16,
    "category": "Interface ICs",
    "subcategory": "Digital Isolators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a47611d83f8b8be5a0525e8630cfd482.pdf",
    "parts": {
      "symbol": "ca-is3740ln.kicad_sym",
      "footprint": "ca-is3740ln.kicad_mod",
      "model_3d": "ca-is3740ln-hero.glb",
      "model_3d_plain": "ca-is3740ln-etched.glb",
      "model_3d_step": "ca-is3740ln-etched.step",
      "model_3d_step_plain": "ca-is3740ln.step",
      "lbr": "ca-is3740ln.lbr"
    },
    "distributor_links": {
      "lcsc": "C428888"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T14:40:06Z",
      "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": "A-side supply voltage, recommended range 2.375 V to 5.5 V (3.3 V or 5.0 V typical) with absolute maximum 7.0 V."
      },
      {
        "number": "2",
        "name": "GNDA",
        "type": "power_in",
        "description": "A-side ground reference point for the A-side logic inputs and supply."
      },
      {
        "number": "3",
        "name": "VI1",
        "type": "input",
        "description": "A-side logic input for channel 1, TTL-compatible with VIH minimum 2.0 V and VIL maximum 0.8 V, Schmitt-trigger input."
      },
      {
        "number": "4",
        "name": "VI2",
        "type": "input",
        "description": "A-side logic input for channel 2, TTL-compatible with VIH minimum 2.0 V and VIL maximum 0.8 V, Schmitt-trigger input."
      },
      {
        "number": "5",
        "name": "VI3/VO3",
        "type": "input",
        "description": "On CA-IS3740 this pin is the A-side logic input for channel 3, TTL-compatible with VIH minimum 2.0 V and VIL maximum 0.8 V."
      },
      {
        "number": "6",
        "name": "VI4/VO4",
        "type": "input",
        "description": "On CA-IS3740 this pin is the A-side logic input for channel 4, TTL-compatible with VIH minimum 2.0 V and VIL maximum 0.8 V."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection on CA-IS3740; the pin may be left floating or connected to VDD or GND."
      },
      {
        "number": "8",
        "name": "GNDA",
        "type": "power_in",
        "description": "A-side ground reference point, second A-side ground pin."
      },
      {
        "number": "9",
        "name": "GNDB",
        "type": "power_in",
        "description": "B-side ground reference point for the B-side outputs and supply."
      },
      {
        "number": "10",
        "name": "ENB",
        "type": "input",
        "description": "B-side output enable, active high; internally pulled up to local VDD so it may be left floating, but a defined logic level is recommended in noisy environments, and a low level puts the B-side outputs in high impedance."
      },
      {
        "number": "11",
        "name": "VI4/VO4",
        "type": "output",
        "description": "On CA-IS3740 this pin is the B-side logic output for channel 4, with typical output impedance of 50 Ω."
      },
      {
        "number": "12",
        "name": "VI3/VO3",
        "type": "output",
        "description": "On CA-IS3740 this pin is the B-side logic output for channel 3, with typical output impedance of 50 Ω."
      },
      {
        "number": "13",
        "name": "VO2",
        "type": "output",
        "description": "B-side logic output for channel 2, with typical output impedance of 50 Ω."
      },
      {
        "number": "14",
        "name": "VO1",
        "type": "output",
        "description": "B-side logic output for channel 1, with typical output impedance of 50 Ω."
      },
      {
        "number": "15",
        "name": "GNDB",
        "type": "power_in",
        "description": "B-side ground reference point, second B-side ground pin."
      },
      {
        "number": "16",
        "name": "VDDB",
        "type": "power_in",
        "description": "B-side supply voltage, recommended range 2.375 V to 5.5 V (3.3 V or 5.0 V typical) with absolute maximum 7.0 V."
      }
    ],
    "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 datasheet pin table lists these as dual-function pins (VIx/VOx) whose direction depends on the d; Pin 7 is labelled NC1/ENA2 in the datasheet. For CA-IS3740 it is a no-connect, since ENA applies onl; The datasheet gives a single top-view pinout shared by the SOIC16-NB, SOIC16-WB and SSOP16-NB packag"
        ],
        "pages_sent": 25,
        "cost_usd": 0.1264,
        "at": "2026-10-21T14:33:48"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a47611d83f8b8be5a0525e8630cfd482.pdf",
        "pages": 25,
        "sha256": "fd7bb5373a55db4c",
        "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": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
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        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ca-is3740ln-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": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7ae2b860182a0bd19e3d447ed49b985d578116260814ee1b674bb175196f9904",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}