WS3085EESA-GEC

{
  "schema_version": 1,
  "type": "component",
  "slug": "ws3085eesa-gec",
  "title": "WS3085EESA-GEC",
  "brief": "GEC RS-485 / RS-422 ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "interface",
    "ws3085eesa-gec"
  ],
  "component": {
    "mpn": "WS3085EESA-GEC",
    "manufacturer": "GEC",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/7a311a8fe1cfd5aa7ed0186146e68f2b.pdf",
    "parts": {
      "symbol": "ws3085eesa-gec.kicad_sym",
      "footprint": "ws3085eesa-gec.kicad_mod",
      "model_3d": "ws3085eesa-gec-etched.glb",
      "model_3d_plain": "ws3085eesa-gec.glb",
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      "model_3d_step_plain": "ws3085eesa-gec.step",
      "lbr": "ws3085eesa-gec.lbr"
    },
    "distributor_links": {
      "lcsc": "C2691412"
    },
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver output. When the receiver is enabled and V(A)-V(B) > -50mV, RO is driven high; when V(A)-V(B) < -200mV, RO is driven low. Fail-safe high when the bus is open/shorted. VOH ≥ 4V @ IO = -4mA; VOL ≤ 0.4V @ IO = 4mA."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Active-low receiver output enable. RE = 0 enables RO; RE = 1 places RO in high-impedance. When RE = 1 and DE = 0 the chip enters low-power shutdown (typ. 1.8µA)."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver output enable. DE = 1 enables the driver; DE = 0 places the driver outputs (A, B) in high-impedance. When RE = 1 and DE = 0 the entire chip enters shutdown."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver data input. When DI is low the non-inverting bus output (A) is forced low and inverting (B) high; when DI is high A is high and B is low. VIH ≥ 2.0V, VIL ≤ 0.8V, 100mV typical hysteresis."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for all signals and supply."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "RS-485/RS-422 bus interface, non-inverting driver output and non-inverting receiver input. ±15kV HBM / ±12kV IEC 61000-4-2 contact-discharge ESD protection. Rated for -7V to +12V common-mode range."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "RS-485/RS-422 bus interface, inverting driver output and inverting receiver input. ±15kV HBM / ±12kV IEC 61000-4-2 contact-discharge ESD protection. Rated for -7V to +12V common-mode range."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, 4.75V to 5.25V (5V nominal). Bypass to GND with a 0.1µF ceramic capacitor. Typical ICC = 450µA (max 600µA), shutdown ISHDN typ. 1.8µA."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/7a311a8fe1cfd5aa7ed0186146e68f2b.pdf",
        "pages": 10,
        "sha256": "322eb465dd4a8217",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ws3085eesa-gec-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b0d462f7d325b8ae94a37a2d773135165ee096735190959be1d20c7a5acc6404",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "GEC",
      "Package": "SOP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ws3085eesa-gec"
  ],
  "discovery_pitch": "WS3085EESA-GEC (GEC) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ws3085eesa-gec.kicad_sym",
    "ws3085eesa-gec.kicad_mod",
    "ws3085eesa-gec.glb",
    "ws3085eesa-gec.step",
    "ws3085eesa-gec.lbr",
    "docs/hero.png",
    "docs/ws3085eesa-gec-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ws3085eesa-gec-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "WS3085EESA-GEC",
      "kind": "packaging"
    },
    {
      "mpn": "WS3085EESA-GB",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T14:09:39.317Z"
}