CA-IF4820HM

{
  "schema_version": 1,
  "type": "component",
  "slug": "ca-if4820hm",
  "title": "CA-IF4820HM",
  "brief": "Chipanalog RS-485 / RS-422 ICs, MSOP-8. 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",
    "ca-if4820hm",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "CA-IF4820HM",
    "manufacturer": "Chipanalog",
    "package": "MSOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590913701527056384",
    "parts": {
      "symbol": "ca-if4820hm.kicad_sym",
      "footprint": "ca-if4820hm.kicad_mod",
      "model_3d": "ca-if4820hm-etched.glb",
      "model_3d_plain": "ca-if4820hm.glb",
      "model_3d_step": "ca-if4820hm-etched.step",
      "model_3d_step_plain": "ca-if4820hm.step",
      "lbr": "ca-if4820hm.lbr"
    },
    "distributor_links": {
      "lcsc": "C7498462"
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output; high when (VA - VB) > -20mV, low when (VA - VB) < -200mV, or high-impedance when REB is high."
      },
      {
        "number": "2",
        "name": "REB",
        "type": "input",
        "description": "Receiver enable control, active low; receiver enabled when low, output high-impedance when high."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver enable control, active high; driver enabled when high, outputs high-impedance when low."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver data input; when DE is high, DI high drives A high and B low, DI low drives A low and B high."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; reference for all signal levels and bus common mode."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "RS-485/RS-422 differential bus non-inverting side; ±30V overvoltage protection, ±30kV HBM ESD protection."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "RS-485/RS-422 differential bus inverting side; ±30V overvoltage protection, ±30kV HBM ESD protection."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply input, 3.0V to 5.5V; bypass with ≥0.1μF capacitor placed close to pin."
      }
    ],
    "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": 24,
        "cost_usd": 0.1921,
        "at": "2026-09-18T05:56:27"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590913701527056384",
        "pages": 24,
        "sha256": "2bf29538f533f541",
        "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-if4820hm.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "847c4c5023fe1603fbd36900a5dcc4bd3901ba473f71d42c9a469f0236eaadf3",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ca-if4820hm-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.9,
          3,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c53a13fa54ab2432d9e750754cef4a15517b30746fb7943fbf47fd2d11778150",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Chipanalog",
      "Package": "MSOP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ca-if4820hm"
  ],
  "discovery_pitch": "CA-IF4820HM (Chipanalog) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ca-if4820hm.kicad_sym",
    "ca-if4820hm.kicad_mod",
    "ca-if4820hm.glb",
    "ca-if4820hm.step",
    "ca-if4820hm.lbr",
    "docs/hero.png",
    "docs/ca-if4820hm-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T18:23:40.835Z"
}