GB490

{
  "schema_version": 1,
  "type": "component",
  "slug": "gb490",
  "title": "GB490",
  "brief": "GEC RS-485 / RS-422 ICs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "gb490",
    "factory-2.0.0",
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  "component": {
    "mpn": "GB490",
    "manufacturer": "GEC",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Interface",
    "subcategory": "RS-485 / RS-422 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590170570726797312",
    "parts": {
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      "footprint": "gb490.kicad_mod",
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      "model_3d_plain": "gb490-etched.glb",
      "model_3d_step": "gb490-etched.step",
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      "lbr": "gb490.lbr"
    },
    "distributor_links": {
      "lcsc": "C2691429"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T09:36:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Vcc",
        "type": "power_in",
        "description": "Positive supply, nominally 5 V (recommended 4.75 V to 5.25 V, absolute maximum 7 V), bypassed to GND with a 0.1 µF capacitor."
      },
      {
        "number": "2",
        "name": "RO",
        "type": "output",
        "description": "Receiver output: when the receiver is enabled, RO is high if V(A)-V(B) > -50 mV and low if V(A)-V(B) < -200 mV, and it is held high for open or shorted inputs (fail-safe)."
      },
      {
        "number": "3",
        "name": "DI",
        "type": "input",
        "description": "Driver input: DI low forces Y low and Z high, and DI high forces Y high and Z low."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device; all voltages are referenced to this pin."
      },
      {
        "number": "5",
        "name": "Y",
        "type": "output",
        "description": "Bus interface pin carrying the non-inverting driver output, which follows DI."
      },
      {
        "number": "6",
        "name": "Z",
        "type": "output",
        "description": "Bus interface pin carrying the inverting driver output, which is the complement of DI."
      },
      {
        "number": "7",
        "name": "B",
        "type": "input",
        "description": "Bus interface pin serving as the inverting receiver input, with a 1/8 unit-load input impedance (96 kΩ)."
      },
      {
        "number": "8",
        "name": "A",
        "type": "input",
        "description": "Bus interface pin serving as the non-inverting receiver input, with a 1/8 unit-load input impedance (96 kΩ)."
      }
    ],
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet lists the GB490 only in the 8-pin SOP package (page 1 and the packing table on page 8); Pin types for Y, Z, A and B were assigned from the driver/receiver function described in the pin tab"
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        "cost_usd": 0.0318,
        "at": "2026-10-18T09:34:58"
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        "sha256": "5c5e741f991a5715",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "described": 8,
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        "refuses_to_fabricate": true
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "GEC",
      "Package": "SOP-8",
      "Category": "Interface",
      "Pins": "8"
    },
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