ST485ECDR-TD

{
  "slug": "st485ecdr-td",
  "version": "0.1.0",
  "type": "component",
  "description": "TDSEMIC RS-485 / RS-422 ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "st485ecdr-td",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "st485ecdr-td.kicad_sym",
    "st485ecdr-td.kicad_mod",
    "st485ecdr-td.glb",
    "st485ecdr-td.step",
    "st485ecdr-td.lbr",
    "docs/hero.png",
    "docs/st485ecdr-td-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "st485ecdr-td-hero.glb",
    "st485ecdr-td-hero.overlay.json"
  ],
  "component": {
    "mpn": "ST485ECDR-TD",
    "manufacturer": "TDSEMIC",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8614113004451880960",
    "parts": {
      "symbol": "st485ecdr-td.kicad_sym",
      "footprint": "st485ecdr-td.kicad_mod",
      "model_3d": "st485ecdr-td-hero.glb",
      "model_3d_plain": "st485ecdr-td.glb",
      "model_3d_step": "st485ecdr-td-etched.step",
      "model_3d_step_plain": "st485ecdr-td.step",
      "lbr": "st485ecdr-td.lbr"
    },
    "distributor_links": {
      "lcsc": "C41369859"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T22:02:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 546 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: RO is high when A is at least 200 mV above B and low when A is at least 200 mV below B, and it is high-impedance when RE is high."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver enable, active low; when RE is high the receiver output RO 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 device transmits (DE low with RE low puts it in receive mode)."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver data input: DI low drives A high and B low, and DI high drives 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 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: The pinout figure on page 2 is labelled 'DIP/SO' and I did not read the package outline or ordering ; The pin descriptions are translated from Chinese. The datasheet gives no supply voltage or other lim",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 11,
        "cost_usd": 0.2919,
        "at": "2026-10-09T21:58:19"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8614113004451880960",
        "pages": 11,
        "sha256": "e0f1e059df77b64f",
        "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": "st485ecdr-td.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": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "st485ecdr-td-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": "8c445bb0e8bc6b69ac7bba8f0cde26ce7bd0c38a1949abfc1e820468b0f391fc",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}