ST485EXDR

{
  "slug": "st485exdr",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics RS-485 / RS-422 ICs, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "st485exdr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "st485exdr.kicad_sym",
    "st485exdr.kicad_mod",
    "st485exdr.glb",
    "st485exdr.step",
    "st485exdr.lbr",
    "docs/hero.png",
    "docs/st485exdr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "st485exdr-hero.glb",
    "st485exdr-hero.overlay.json"
  ],
  "component": {
    "mpn": "ST485EXDR",
    "manufacturer": "STMicroelectronics",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590910171906588672",
    "parts": {
      "symbol": "st485exdr.kicad_sym",
      "footprint": "st485exdr.kicad_mod",
      "model_3d": "st485exdr-hero.glb",
      "model_3d_plain": "st485exdr.glb",
      "model_3d_step": "st485exdr-etched.step",
      "model_3d_step_plain": "st485exdr.step",
      "lbr": "st485exdr.lbr"
    },
    "distributor_links": {
      "lcsc": "C283496",
      "digikey": "497-2089-2-ND",
      "mouser": "511-ST485EXDR"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T19:43:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-2089-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-ST485EXDR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: with RE low it goes high when A-B ≥ +0.2 V and low when A-B ≤ -0.2 V, and it is high impedance when RE is high and DE is low (Table 4)."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver output enable: the receiver is active when RE is low and RO is placed in high impedance when RE is high (Table 4); control input limits VIH 2.0 V min and VIL 0.8 V max (Table 7)."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable: the driver outputs A and B are active when DE is high and go high impedance when DE is low (Table 3); control input limits VIH 2.0 V min and VIL 0.8 V max (Table 7)."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver input: with DE high, DI high drives A high and B low and DI low drives A low and B high (Table 3); input limits VIH 2.0 V min and VIL 0.8 V max (Table 7)."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground; all voltages are referenced to this pin (Table 7 footnote 1)."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Non-inverting receiver input and non-inverting driver output; receiver common-mode range is -7 V to 12 V and voltage rating is ±14 V (Tables 5 and 7)."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting receiver input and inverting driver output; receiver common-mode range is -7 V to 12 V and voltage rating is ±14 V (Tables 5 and 7)."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: specified for 5 V ±5% operation, with an absolute maximum of 7 V (Tables 5 and 6)."
      }
    ],
    "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 datasheet gives the pin functions (Table 2) but no KiCad ERC type labels. Types were assigned fr; The pin table applies to the whole ST485E SO-8 family, and the ST485EXDR is the -55 to 125 °C tape-a; The output schema has no specs field, so the headline electrical parameters (for example 5 V ±5% sup",
          "1/8 pins cited to the wrong page (name found elsewhere): ['5:GND@p7']"
        ],
        "pages_sent": 18,
        "cost_usd": 0.0402,
        "at": "2026-10-10T19:43:28"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590910171906588672",
        "pages": 18,
        "sha256": "fc67af9e126732a1",
        "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": "st485exdr.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": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "st485exdr-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": "60f29f6f489b1235dca17e71e7b033bbc914bc71a299a90dcfb2b1b9d36f3a89",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}