WS3221ECA

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  "slug": "ws3221eca",
  "title": "WS3221ECA",
  "brief": "GEC RS232 ICs, SSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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    "mpn": "WS3221ECA",
    "manufacturer": "GEC",
    "package": "SSOP-16",
    "pin_count": 16,
    "category": "Communication Interface Chip/UART/485/232",
    "subcategory": "RS232 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/b4921467fe581a255f3900afe62f1dfd.pdf",
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    "distributor_links": {
      "lcsc": "C2691421"
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      "checked_at": "2026-10-26T21:50:05Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
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        "status": "no match"
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    "pins": [
      {
        "number": "1",
        "name": "XEN",
        "type": "input",
        "description": "Receiver enable, active low; a high level forces the receiver outputs into high impedance."
      },
      {
        "number": "2",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the boost charge-pump capacitor, with C1P to C1N recommended at 0.1uF."
      },
      {
        "number": "3",
        "name": "V+",
        "type": "power_out",
        "description": "Positive supply generated by the charge pump, stated as +5.4V."
      },
      {
        "number": "4",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of the boost charge-pump capacitor, with C1P to C1N recommended at 0.1uF."
      },
      {
        "number": "5",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the inverting charge-pump capacitor, with C2P to C2N recommended at 0.1uF."
      },
      {
        "number": "6",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of the inverting charge-pump capacitor, with C2P to C2N recommended at 0.1uF."
      },
      {
        "number": "7",
        "name": "V-",
        "type": "power_out",
        "description": "Negative supply generated by the charge pump, stated as -5.4V."
      },
      {
        "number": "8",
        "name": "R1IN",
        "type": "input",
        "description": "First RS-232 receiver input, rated at ±20V in the absolute maximum table."
      },
      {
        "number": "9",
        "name": "R1OUT",
        "type": "output",
        "description": "First TTL/CMOS receiver output, referenced to VCC and rated from -0.3V to VCC+0.3V."
      },
      {
        "number": "10",
        "name": "XIDLE",
        "type": "output",
        "description": "TTL/CMOS output that indicates the XPWRSAVE or shutdown state."
      },
      {
        "number": "11",
        "name": "T1IN",
        "type": "input",
        "description": "First TTL/CMOS driver input, rated from -0.3V to +7V."
      },
      {
        "number": "12",
        "name": "XPWRSAVE",
        "type": "input",
        "description": "A high level forces the driver to operate, and SHUTDOWN must be high for this function to apply."
      },
      {
        "number": "13",
        "name": "T1OUT",
        "type": "output",
        "description": "First RS-232 driver output, rated at ±15V in the absolute maximum table."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage of +3V to +3.6V, with 3.3V typical."
      },
      {
        "number": "16",
        "name": "XSD",
        "type": "input",
        "description": "Shutdown control, active low; a low level shuts down the driver and voltage converter."
      }
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  "metadata": {
    "specs": {
      "Manufacturer": "GEC",
      "Package": "SSOP-16",
      "Category": "Communication Interface Chip/UART/485/232",
      "Pins": "16"
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