ADM2491EBRWZ-REEL7

{
  "schema_version": 1,
  "type": "component",
  "slug": "adm2491ebrwz-reel7",
  "title": "ADM2491EBRWZ-REEL7",
  "brief": "Analog Devices Isolated RS-485/422 Transceivers, 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",
    "signal isolation devices",
    "adm2491ebrwz-reel7",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ADM2491EBRWZ-REEL7",
    "manufacturer": "Analog Devices",
    "package": "SOIC-16-300mil",
    "pin_count": 16,
    "category": "Signal Isolation Devices",
    "subcategory": "Isolated RS-485/422 Transceivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588894329104707584",
    "parts": {
      "symbol": "adm2491ebrwz-reel7.kicad_sym",
      "footprint": "adm2491ebrwz-reel7.kicad_mod",
      "model_3d": "adm2491ebrwz-reel7-etched.glb",
      "model_3d_plain": "adm2491ebrwz-reel7.glb",
      "model_3d_step": "adm2491ebrwz-reel7-etched.step",
      "model_3d_step_plain": "adm2491ebrwz-reel7.step",
      "lbr": "adm2491ebrwz-reel7.lbr"
    },
    "distributor_links": {
      "lcsc": "C579187"
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD1",
        "type": "power_in",
        "description": "Power supply (logic side), 3.0 to 5.5 V; requires 0.01-0.1 µF bypass capacitor to GND1."
      },
      {
        "number": "2",
        "name": "GND1",
        "type": "power_in",
        "description": "Ground reference (logic side)."
      },
      {
        "number": "3",
        "name": "RxD",
        "type": "tri_state",
        "description": "Receiver output with tri-state operation (disabled by RE high); logic low outputs 0.2-0.4 V, logic high outputs VDD1-0.3 to VDD1-0.2 V."
      },
      {
        "number": "4",
        "name": "RE",
        "type": "input",
        "description": "Receiver enable (active low); receiver enabled when ≤0.25×VDD1, disabled when ≥0.7×VDD1."
      },
      {
        "number": "5",
        "name": "DE",
        "type": "input",
        "description": "Driver enable (active high); driver enabled when ≥0.7×VDD1, disabled when ≤0.25×VDD1."
      },
      {
        "number": "6",
        "name": "TxD",
        "type": "input",
        "description": "Transmit data logic input; thresholds 0.25×VDD1 (low) and 0.7×VDD1 (high), input current ±10 µA."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect pin, must remain floating."
      },
      {
        "number": "8",
        "name": "GND1",
        "type": "power_in",
        "description": "Ground reference (logic side)."
      },
      {
        "number": "9",
        "name": "GND2",
        "type": "power_in",
        "description": "Ground reference (bus side)."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect pin, must remain floating."
      },
      {
        "number": "11",
        "name": "Y",
        "type": "output",
        "description": "Driver noninverting output (RS-485/RS-422), differential output ±2.0 to ±5.0 V into 54-100 Ω loads, max short-circuit current 250 mA."
      },
      {
        "number": "12",
        "name": "Z",
        "type": "output",
        "description": "Driver inverting output (RS-485/RS-422), complementary to Y, differential output ±2.0 to ±5.0 V into 54-100 Ω loads, max short-circuit current 250 mA."
      },
      {
        "number": "13",
        "name": "B",
        "type": "input",
        "description": "Receiver inverting input (RS-485/RS-422 bus); differential threshold voltage ±0.2 V, 12 kΩ input impedance."
      },
      {
        "number": "14",
        "name": "A",
        "type": "input",
        "description": "Receiver noninverting input (RS-485/RS-422 bus); differential threshold voltage ±0.2 V, 12 kΩ input impedance."
      },
      {
        "number": "15",
        "name": "GND2",
        "type": "power_in",
        "description": "Ground reference (bus side)."
      },
      {
        "number": "16",
        "name": "VDD2",
        "type": "power_in",
        "description": "Isolated power supply (bus side), 4.5 to 5.5 V; requires 0.01-0.1 µF bypass capacitor to GND2."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 16,
        "cost_usd": 0.2813,
        "at": "2026-09-21T19:55:35"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588894329104707584",
        "pages": 16,
        "sha256": "d2765fb01d46c583",
        "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": "adm2491ebrwz-reel7.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "adm2491ebrwz-reel7-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": "3c8df1730094b1a493fec9ad43fbbaeb41e0f1aa741ad0ab2f1622c9583be067",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "SOIC-16-300mil",
      "Category": "Signal Isolation Devices",
      "Pins": "16"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "adm2491ebrwz-reel7"
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  "discovery_pitch": "ADM2491EBRWZ-REEL7 (Analog Devices) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "adm2491ebrwz-reel7.kicad_sym",
    "adm2491ebrwz-reel7.kicad_mod",
    "adm2491ebrwz-reel7.glb",
    "adm2491ebrwz-reel7.step",
    "adm2491ebrwz-reel7.lbr",
    "docs/hero.png",
    "docs/adm2491ebrwz-reel7-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T15:54:06.856Z"
}