SP490EEN-L

{
  "schema_version": 1,
  "type": "component",
  "slug": "sp490een-l",
  "title": "SP490EEN-L",
  "brief": "MaxLinear RS-485 / RS-422 ICs, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "sp490een-l"
  ],
  "component": {
    "mpn": "SP490EEN-L",
    "manufacturer": "MaxLinear",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/60f21898c1ba4f918b58b60c8fc50cef.pdf",
    "parts": {
      "symbol": "sp490een-l.kicad_sym",
      "footprint": "sp490een-l.kicad_mod",
      "model_3d": "sp490een-l-etched.glb",
      "model_3d_plain": "sp490een-l.glb",
      "model_3d_step": "sp490een-l-etched.step",
      "model_3d_step_plain": "sp490een-l.step",
      "lbr": "sp490een-l.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input, +4.75 V to +5.25 V (nominal +5 V). Typical supply current ~900 uA. Bypass locally with a 0.1 uF ceramic to GND."
      },
      {
        "number": "2",
        "name": "R",
        "type": "output",
        "description": "Receiver data output. Logic-level output that follows the A-B differential input: HIGH when (A-B) > +200 mV, LOW when (A-B) < -200 mV. Drives up to +/-4 mA at CMOS logic levels; fail-safe HIGH when inputs are open."
      },
      {
        "number": "3",
        "name": "D",
        "type": "input",
        "description": "Driver data input. CMOS-compatible logic input (V_IH >= 2.0 V, V_IL <= 0.8 V) that drives the differential Y/Z output pair. Always enabled on the SP490E (no DE pin)."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground / 0 V reference for logic and differential I/O."
      },
      {
        "number": "5",
        "name": "Y",
        "type": "output",
        "description": "Non-inverting driver output (RS-485/RS-422 bus line). Differential (Y-Z) swing is >=1.5 V into 54 ohm (RS-485) and >=2 V into 50 ohm (RS-422). Short-circuit current limited to +/-250 mA over -7 V to +12 V common mode."
      },
      {
        "number": "6",
        "name": "Z",
        "type": "output",
        "description": "Inverting driver output (RS-485/RS-422 bus line). Complementary to Y, forming the differential driver pair."
      },
      {
        "number": "7",
        "name": "B",
        "type": "input",
        "description": "Inverting receiver input (RS-485/RS-422 bus line). Differential sensitivity +/-200 mV; input resistance typ 15 kOhm (12 kOhm min); tolerates -7 V to +12 V common mode."
      },
      {
        "number": "8",
        "name": "A",
        "type": "input",
        "description": "Non-inverting receiver input (RS-485/RS-422 bus line). Paired with B to form the differential receiver input; fail-safe HIGH R output when both inputs are left open."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/60f21898c1ba4f918b58b60c8fc50cef.pdf",
        "pages": 12,
        "sha256": "fd2d7cb7533d7f49",
        "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": "sp490een-l.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": "sp490een-l-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": "635c447839b37c7b7176fabc61029fda0f74a44f5862926f70bbfa58c6bd451d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "MaxLinear",
      "Package": "SOIC-8",
      "Category": "Interface",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sp490een-l"
  ],
  "discovery_pitch": "SP490EEN-L (MaxLinear) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sp490een-l.kicad_sym",
    "sp490een-l.kicad_mod",
    "sp490een-l.glb",
    "sp490een-l.step",
    "sp490een-l-etched.step",
    "sp490een-l.lbr",
    "docs/hero.png",
    "docs/sp490een-l-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SP490EEN-L",
      "kind": "packaging"
    },
    {
      "mpn": "SP490ECN",
      "kind": "unknown"
    },
    {
      "mpn": "SP490EEP",
      "kind": "unknown"
    },
    {
      "mpn": "SP490ECP",
      "kind": "unknown"
    },
    {
      "mpn": "SP491EEN",
      "kind": "unknown"
    },
    {
      "mpn": "SP491ECN",
      "kind": "unknown"
    },
    {
      "mpn": "SP491EEP",
      "kind": "unknown"
    },
    {
      "mpn": "SP491ECP",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T08:00:39.041Z"
}