UM3085EESA

{
  "schema_version": 1,
  "type": "component",
  "slug": "um3085eesa",
  "title": "UM3085EESA",
  "brief": "Union Semiconductor RS-485 / RS-422 ICs, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "um3085eesa"
  ],
  "component": {
    "mpn": "UM3085EESA",
    "manufacturer": "Union Semiconductor",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a812f63bf9128da3977e6be140453792.pdf",
    "parts": {
      "symbol": "um3085eesa.kicad_sym",
      "footprint": "um3085eesa.kicad_mod",
      "model_3d": "um3085eesa-etched.glb",
      "model_3d_plain": "um3085eesa.glb",
      "model_3d_step": "um3085eesa-etched.step",
      "model_3d_step_plain": "um3085eesa.step",
      "lbr": "um3085eesa.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver Output. If A-B > -50 mV, RO is high; if A-B < -200 mV, RO is low. High-Z in shutdown mode."
      },
      {
        "number": "2",
        "name": "~{RE}",
        "type": "input",
        "description": "Receiver Output Enable (active low). Drive RE low to enable the receiver (RO active); RO is high impedance when RE is high. Drive RE high and DE low to enter low-power shutdown mode."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver Enable (active high). Drive DE high to enable the driver outputs (A, B); outputs are high impedance when DE is low. Drive RE high and DE low to enter low-power shutdown mode."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver Input. A low on DI forces output A low and output B high; a high on DI forces output A high and output B low. Has 100 mV input hysteresis on UM3085E."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0 V)."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Non-inverting Receiver Input and Non-inverting Driver Output (RS-485 differential line A). Input range -7 V to +12 V common-mode; ±15 kV HBM / IEC61000-4-2 air-gap ESD protected."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting Receiver Input and Inverting Driver Output (RS-485 differential line B). Input range -7 V to +12 V common-mode; ±15 kV HBM / IEC61000-4-2 air-gap ESD protected."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Power Supply for RS-485 transceiver. Nominal +5 V ±5% (absolute max +7 V). Typical supply current 300 µA unloaded, 2 nA in shutdown."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a812f63bf9128da3977e6be140453792.pdf",
        "pages": 14,
        "sha256": "5d1b6bed27594621",
        "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"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Union Semiconductor",
      "Package": "SOP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "um3085eesa"
  ],
  "discovery_pitch": "UM3085EESA (Union Semiconductor) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "um3085eesa.kicad_sym",
    "um3085eesa.kicad_mod",
    "um3085eesa.glb",
    "um3085eesa.step",
    "um3085eesa-etched.step",
    "um3085eesa.lbr",
    "docs/hero.png",
    "docs/um3085eesa-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "UM3085EESA",
      "kind": "packaging"
    },
    {
      "mpn": "UM3088EESA",
      "kind": "unknown"
    },
    {
      "mpn": "UM3085EEPA",
      "kind": "unknown"
    },
    {
      "mpn": "UM3088EEPA",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T13:46:06.847Z"
}