SP485EN

{
  "schema_version": 1,
  "type": "component",
  "slug": "sp485en",
  "title": "SP485EN",
  "brief": "UMW 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",
    "sp485en"
  ],
  "component": {
    "mpn": "SP485EN",
    "manufacturer": "UMW",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b6debab9973cdebd442125a7e81b9b95.pdf",
    "parts": {
      "symbol": "sp485en.kicad_sym",
      "footprint": "sp485en.kicad_mod",
      "model_3d": "sp485en-etched.glb",
      "model_3d_plain": "sp485en.glb",
      "model_3d_step": "sp485en-etched.step",
      "model_3d_step_plain": "sp485en.step",
      "lbr": "sp485en.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "RO",
        "type": "output",
        "description": "Receiver Output. Logic-level output of the differential receiver. When RE is low and (A-B) > +0.2V, RO=1; when (A-B) < -0.2V, RO=0. VOH >= 3.5V at IO=-4mA; VOL <= 0.4V at IO=4mA. Enters high-impedance state when RE is high."
      },
      {
        "number": "2",
        "name": "RE",
        "type": "input",
        "description": "Receiver Output Enable (active-low). When RE=0, the receiver output RO is enabled; when RE=1, RO is placed in a high-impedance (tri-state) condition. VIH >= 2V, VIL <= 0.8V, input current +/-2 uA max."
      },
      {
        "number": "3",
        "name": "DE",
        "type": "input",
        "description": "Driver Output Enable (active-high). When DE=1, the differential driver outputs A and B are enabled; when DE=0, both A and B are placed in a high-impedance state. VIH >= 2V, VIL <= 0.8V."
      },
      {
        "number": "4",
        "name": "DI",
        "type": "input",
        "description": "Driver Input. Logic-level input that drives the differential bus outputs. When DE=1 and DI=1, A=1 and B=0; when DE=1 and DI=0, A=0 and B=1. VIH >= 2V, VIL <= 0.8V, input current +/-2 uA max."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference (0V) for both the logic and the differential bus interface."
      },
      {
        "number": "6",
        "name": "A",
        "type": "bidirectional",
        "description": "Non-inverting driver output / non-inverting receiver input (RS-485/RS-422 bus line A). Withstands -7V to +13V common-mode. Receiver threshold VTH = -0.2V to +0.2V (differential A-B). Input resistance >= 12 kOhm. Driver differential output >= 1.5V into a 27 Ohm load."
      },
      {
        "number": "7",
        "name": "B",
        "type": "bidirectional",
        "description": "Inverting driver output / inverting receiver input (RS-485/RS-422 bus line B). Withstands -7V to +13V common-mode. Complementary to line A. Input resistance >= 12 kOhm."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input. Single 5V supply (4.75V to 5.25V, +/-5%). Absolute maximum 7V. Quiescent supply current typically 900 uA (max)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/b6debab9973cdebd442125a7e81b9b95.pdf",
        "pages": 9,
        "sha256": "ff31376d6581230b",
        "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": [
      {
        "file": "sp485en.step",
        "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": "sp485en-etched.step",
        "role": "eda",
        "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": "83fc0a6c7829bfcebf5ceb41b43eb10df436853b7d6d89f29a0b1ed5a19e83f6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "UMW",
      "Package": "SOP-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sp485en"
  ],
  "discovery_pitch": "SP485EN (UMW) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sp485en.kicad_sym",
    "sp485en.kicad_mod",
    "sp485en.glb",
    "sp485en.step",
    "sp485en-etched.step",
    "sp485en.lbr",
    "docs/hero.png",
    "docs/sp485en-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SP485EN",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T08:00:13.404Z"
}