GM490E

{
  "schema_version": 1,
  "type": "component",
  "slug": "gm490e",
  "title": "GM490E",
  "brief": "GATEMODE 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": [
    "component",
    "comm-uart",
    "gm490e"
  ],
  "component": {
    "mpn": "GM490E",
    "manufacturer": "GATEMODE",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Comm/UART",
    "subcategory": "RS-485/RS-422 ICs",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2212030400_GATEMODE-GM490E_C5201635.pdf",
    "parts": {
      "symbol": "gm490e.kicad_sym",
      "footprint": "gm490e.kicad_mod",
      "model_3d": "gm490e-etched.glb",
      "model_3d_plain": "gm490e.glb",
      "model_3d_step": "gm490e-etched.step",
      "model_3d_step_plain": "gm490e.step",
      "lbr": "gm490e.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply. 4.75V ≤ VCC ≤ 5.25V (5V ±5%). Absolute max 6.5V. Bypass with a 0.1µF capacitor to GND."
      },
      {
        "number": "2",
        "name": "RO",
        "type": "output",
        "description": "Receiver Output. If A−B > 200mV, RO is high; if A−B < −200mV, RO is low. VOH ≥ 3.5V at −4mA, VOL ≤ 0.4V at 4mA. Fail-safe high with open inputs."
      },
      {
        "number": "3",
        "name": "DI",
        "type": "input",
        "description": "Driver Input. A low on DI forces output Y low and output Z high; a high on DI forces Y high and Z low. VIH ≥ 2.0V, VIL ≤ 0.8V."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. All voltages are referenced to this pin."
      },
      {
        "number": "5",
        "name": "Y",
        "type": "output",
        "description": "Non-inverting Driver Output (RS-485/RS-422 bus line). Differential driver output pair with Z; VOD ≥ 1.5V into 27Ω (RS-485) or ≥ 2V into 50Ω (RS-422). ±15kV HBM ESD protection, short-circuit current limited (35-250mA) with thermal shutdown."
      },
      {
        "number": "6",
        "name": "Z",
        "type": "output",
        "description": "Inverting Driver Output (RS-485/RS-422 bus line). Complementary to Y. ±15kV HBM ESD protection, short-circuit current limited (35-250mA) with thermal shutdown."
      },
      {
        "number": "7",
        "name": "B",
        "type": "input",
        "description": "Inverting Receiver Input (RS-485/RS-422 bus line). Differential input with A; ΔVTH ±200mV, 70mV typ hysteresis, 96kΩ min input resistance (1/8 unit load, allows up to 256 nodes). Input range −7V ≤ VCM ≤ 12V. ±15kV HBM ESD protection."
      },
      {
        "number": "8",
        "name": "A",
        "type": "input",
        "description": "Non-inverting Receiver Input (RS-485/RS-422 bus line). Differential input with B; ΔVTH ±200mV, 70mV typ hysteresis, 96kΩ min input resistance (1/8 unit load). Input range −7V ≤ VCM ≤ 12V. ±15kV HBM ESD protection."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2212030400_GATEMODE-GM490E_C5201635.pdf",
        "pages": 15,
        "sha256": "60d66baeea28e06f",
        "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": "GATEMODE",
      "Package": "SOP-8",
      "Category": "Comm/UART",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "gm490e"
  ],
  "discovery_pitch": "GM490E (GATEMODE) 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",
    "gm490e.kicad_sym",
    "gm490e.kicad_mod",
    "gm490e.glb",
    "gm490e.step",
    "gm490e.lbr",
    "docs/hero.png",
    "docs/gm490e-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "gm490e-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T21:05:17.792Z"
}