HG487EIN

{
  "slug": "hg487ein",
  "version": "0.1.0",
  "type": "component",
  "description": "HGSEMI RS-485 / RS-422 ICs, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "hg487ein",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "hg487ein.kicad_sym",
    "hg487ein.kicad_mod",
    "hg487ein.glb",
    "hg487ein.step",
    "hg487ein.lbr",
    "docs/hero.png",
    "docs/hg487ein-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "hg487ein-hero.glb",
    "hg487ein-hero.overlay.json",
    "hg487ein-etched.glb"
  ],
  "component": {
    "mpn": "HG487EIN",
    "manufacturer": "HGSEMI",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603086099308818432",
    "parts": {
      "symbol": "hg487ein.kicad_sym",
      "footprint": "hg487ein.kicad_mod",
      "model_3d": "hg487ein-hero.glb",
      "model_3d_plain": "hg487ein-etched.glb",
      "model_3d_step": "hg487ein-etched.step",
      "model_3d_step_plain": "hg487ein.step",
      "lbr": "hg487ein.lbr"
    },
    "distributor_links": {
      "lcsc": "C2926355"
    },
    "distributor_check": {
      "checked_at": "2026-10-16T04:32:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: with RE low, RO goes high when A - B is at least +200 mV and goes low when A - B is at most -200 mV."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver output enable: RO is active when RE is low and high-impedance when RE is high; RE high with DE low puts the device into low-power shutdown, and RE has a hot-plug input structure."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable: the driver outputs are active when DE is high and high-impedance when DE is low; DE high with RE low... see shutdown note, and DE has a hot-plug input structure."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input: with DE high, a low on DI drives A low and B high, and a high on DI drives A high and B low."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Non-inverting bus terminal A, acting as the receiver non-inverting input and driver non-inverting output as used in the A - B receiver function and the driver outputs."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting bus terminal B, acting as the receiver inverting input and driver inverting output."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, 4.5 V to 5.5 V; bypass with a 0.1 µF capacitor to ground."
      }
    ],
    "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 pin table on page 16 is flattened text with several column groups (14-pin full duplex, 8-pin ful; The datasheet's pin 6 label reads 'receiver non-inverting output and driver non-inverting output', w; The DE pin description was cut off in the source text. The sentence avoids the shutdown condition, w"
        ],
        "pages_sent": 24,
        "cost_usd": 0.0816,
        "at": "2026-10-16T04:31:58"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603086099308818432",
        "pages": 24,
        "sha256": "875b683720653634",
        "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": "hg487ein.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "hg487ein-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b251b9d3404a12f66260fa39eb230d147c4c9f54cd59261d6591ccdebbdc5c39",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}