MAX487-TD

{
  "schema_version": 1,
  "type": "component",
  "slug": "max487-td",
  "title": "MAX487-TD",
  "brief": "TDSEMIC RS-485 / RS-422 ICs, DIP-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",
    "max487-td",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MAX487-TD",
    "manufacturer": "TDSEMIC",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5f4b63c09297796344cde52fbac5187b.pdf",
    "parts": {
      "symbol": "max487-td.kicad_sym",
      "footprint": "max487-td.kicad_mod",
      "model_3d": "max487-td-hero.glb",
      "model_3d_plain": "max487-td-etched.glb",
      "model_3d_step": "max487-td-etched.step",
      "model_3d_step_plain": "max487-td.step",
      "lbr": "max487-td.lbr"
    },
    "distributor_links": {
      "lcsc": "C47088812"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T00:37:54Z",
      "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: RO is high when A is more than 200mV above B, and low when A is more than 200mV below B."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver enable, active low; when RE is high the receiver output is high impedance."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver enable, active high; when DE is low the driver outputs are high impedance, and when DE is high the chip is in transmit mode (receive mode when DE and RE are both low)."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver data input: when DI is low A is high and B is low, and when DI is high the outputs are the opposite."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground, negative supply terminal."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Non-inverting receiver input and non-inverting driver output."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting receiver input and inverting driver output."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive power supply terminal."
      }
    ],
    "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": "vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Datasheet pin table and package drawing (labelled DIP/SO) do not explicitly state that MAX487-TD is ; Pin descriptions were translated from Chinese text. The datasheet gives no voltage values for VCC.",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.2956,
        "at": "2026-10-19T00:33:48"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/5f4b63c09297796344cde52fbac5187b.pdf",
        "pages": 11,
        "sha256": "21d1f2cac87a9686",
        "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": "max487-td.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,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "max487-td-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": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "983648a8553369db8631676890ea574cbad47dfab1614eb7580102c54cd3056f",
        "checked": "2026-10-19",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TDSEMIC",
      "Package": "DIP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "max487-td"
  ],
  "discovery_pitch": "MAX487-TD (TDSEMIC) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "max487-td.kicad_sym",
    "max487-td.kicad_mod",
    "max487-td.glb",
    "max487-td.step",
    "max487-td.lbr",
    "docs/hero.png",
    "docs/max487-td-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "max487-td-hero.glb",
    "max487-td-hero.overlay.json",
    "max487-td-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}