BL1587

{
  "slug": "bl1587",
  "version": "0.1.0",
  "type": "component",
  "description": "BL(Shanghai Belling) RS-485/RS-422 ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface ics",
    "bl1587",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bl1587.kicad_sym",
    "bl1587.kicad_mod",
    "bl1587.glb",
    "bl1587.step",
    "bl1587.lbr",
    "docs/hero.png",
    "docs/bl1587-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bl1587-hero.glb",
    "bl1587-hero.overlay.json",
    "bl1587-etched.glb"
  ],
  "component": {
    "mpn": "BL1587",
    "manufacturer": "BL(Shanghai Belling)",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface ICs",
    "subcategory": "RS-485/RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/141becd068a37ae9668087cb51a7f10f.pdf",
    "parts": {
      "symbol": "bl1587.kicad_sym",
      "footprint": "bl1587.kicad_mod",
      "model_3d": "bl1587-hero.glb",
      "model_3d_plain": "bl1587-etched.glb",
      "model_3d_step": "bl1587-etched.step",
      "model_3d_step_plain": "bl1587.step",
      "lbr": "bl1587.lbr"
    },
    "distributor_links": {
      "lcsc": "C2841015"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T19:21:47Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output; active when /RE is low, high-impedance when /RE is high."
      },
      {
        "number": "2",
        "name": "/RE",
        "type": "input",
        "description": "Receiver output enable; RO is active when /RE is low and high-impedance when /RE is high (input range -0.3 V to VCC+0.3 V)."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable; driver outputs are active when DE is high and high-impedance when DE is low (input range -0.3 V to VCC+0.3 V)."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input; high on DI gives A high/B low, low gives A low/B high (input range -0.3 V to VCC+0.3 V)."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Receiver non-inverting input and driver non-inverting output; rated ±13 V."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Receiver inverting input and driver inverting output; rated ±13 V."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply, +5 V operation (4.5 V to 5.5 V), absolute maximum +7 V."
      }
    ],
    "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": [],
        "pages_sent": 8,
        "cost_usd": 0.0439,
        "at": "2026-10-22T19:21:38"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/141becd068a37ae9668087cb51a7f10f.pdf",
        "pages": 8,
        "sha256": "309a5483ffd8b3e3",
        "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": "bl1587.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bl1587-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "488c0ed0c9565c06681ce21f832386c387785f3e5962f014b6f5414967c66869",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}