SP3221EEY-L

{
  "schema_version": 1,
  "type": "component",
  "slug": "sp3221eey-l",
  "title": "SP3221EEY-L",
  "brief": "MaxLinear RS232 ICs, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "interface",
    "sp3221eey-l",
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    "extractor-text"
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  "component": {
    "mpn": "SP3221EEY-L",
    "manufacturer": "MaxLinear",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "RS232 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600658606694424576",
    "parts": {
      "symbol": "sp3221eey-l.kicad_sym",
      "footprint": "sp3221eey-l.kicad_mod",
      "model_3d": "sp3221eey-l-hero.glb",
      "model_3d_plain": "sp3221eey-l-etched.glb",
      "model_3d_step": "sp3221eey-l-etched.step",
      "model_3d_step_plain": "sp3221eey-l.step",
      "lbr": "sp3221eey-l.lbr"
    },
    "distributor_links": {
      "lcsc": "C7083542"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T07:42:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Receiver enable: apply logic LOW for normal operation, and logic HIGH to disable the receiver output into high-impedance."
      },
      {
        "number": "2",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the voltage doubler charge-pump capacitor."
      },
      {
        "number": "3",
        "name": "V+",
        "type": "power_out",
        "description": "Regulated +5.5V output generated by the charge pump."
      },
      {
        "number": "4",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of the voltage doubler charge-pump capacitor."
      },
      {
        "number": "5",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the inverting charge-pump capacitor."
      },
      {
        "number": "6",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of the inverting charge-pump capacitor."
      },
      {
        "number": "7",
        "name": "V-",
        "type": "power_out",
        "description": "Regulated -5.5V output generated by the charge pump."
      },
      {
        "number": "8",
        "name": "R1IN",
        "type": "input",
        "description": "RS-232 receiver input, which the datasheet states is pulled down internally through 5kΩ so an unconnected input commits R1OUT to HIGH."
      },
      {
        "number": "9",
        "name": "R1OUT",
        "type": "output",
        "description": "TTL/CMOS inverting receiver output, which goes high-impedance when EN is logic HIGH."
      },
      {
        "number": "10",
        "name": "STATUS",
        "type": "output",
        "description": "TTL/CMOS output indicating receiver signal activity, which goes LOW when the RS-232 cable is disconnected."
      },
      {
        "number": "11",
        "name": "T1IN",
        "type": "input",
        "description": "TTL/CMOS driver input; unused driver inputs should be connected to GND or VCC."
      },
      {
        "number": "12",
        "name": "ONLINE",
        "type": "input",
        "description": "Apply logic HIGH to override AUTO ON-LINE circuitry and keep the driver active, with SHUTDOWN also held at logic HIGH."
      },
      {
        "number": "13",
        "name": "T1OUT",
        "type": "output",
        "description": "RS-232 driver output, protected against infinite short-circuits to ground."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input, +3.0V to +5.5V."
      },
      {
        "number": "16",
        "name": "SHUTDOWN",
        "type": "input",
        "description": "Apply logic LOW to shut down the drivers and charge pump, overriding all AUTO ON-LINE circuitry and the ONLINE pin."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet gives a single pin table (page 7) shared by the 16-pin TSSOP and 16-pin SSOP variants;; The top-view pin diagram on page 1 is garbled in the text extraction; pin assignments were taken fro"
        ],
        "pages_sent": 20,
        "cost_usd": 0.0901,
        "at": "2026-10-18T07:40:08"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600658606694424576",
        "pages": 20,
        "sha256": "182ec9acd2ab0c45",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "MaxLinear",
      "Package": "TSSOP-16",
      "Category": "Interface",
      "Pins": "16"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "182ec9acd2ab0c45080754ba07c047e8dbaaec443b6c068715ff0640c24a5963",
      "rows": [
        {
          "name": "Supply Current, AUTO ON-LINE",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 10,
          "conditions": "RxIN open, ONLINE = GND, SHUTDOWN = Vcc, TxIN = Vcc or GND, Vcc = +3.3V, TAMB = +25ºC",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Supply Current, Shutdown",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": 10,
          "conditions": "SHUTDOWN = GND, TxIN = Vcc or GND, Vcc = +3.3V, TAMB = +25ºC",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Supply Current, AUTO ON-LINE Disabled",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.3,
          "max": 1,
          "conditions": "ONLINE = SHUTDOWN = Vcc, No Load, Vcc = +3.3V, TAMB = +25ºC",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Logic Threshold HIGH",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "Vcc = 3.3V or 5.0V, TxIN, EN, SHUTDOWN, ONLINE",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Logic Threshold LOW",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "Vcc = 3.3V or 5.0V, TxIN, EN, SHUTDOWN, ONLINE",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input Leakage Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": 0.01,
          "max": 1,
          "conditions": "TAMB = +25ºC, Vin = 0V to Vcc (TxIN, EN, ONLINE, SHUTDOWN)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Leakage Current (RxOUT)",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -10,
          "typ": 0.05,
          "max": 10,
          "conditions": "Receiver disabled, Vout = 0V to Vcc",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage LOW (RxOUT)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOUT = 1.6mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage Swing",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": -5,
          "typ": 5.4,
          "max": 5,
          "conditions": "Driver output loaded with 3kΩ to GND, TAMB = +25ºC",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Short-Circuit Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": -60,
          "typ": null,
          "max": 60,
          "conditions": "Vout = 0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Leakage Current (Driver)",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -25,
          "typ": null,
          "max": 25,
          "conditions": "Vcc = 0V or 3.0V to 5.5V, Vout = +/-12V, Driver disabled",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage Range",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Threshold LOW",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.6,
          "max": 1.2,
          "conditions": "Vcc = 3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Threshold LOW",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.8,
          "max": 1.5,
          "conditions": "Vcc = 5.0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Threshold HIGH",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.5,
          "max": 2.4,
          "conditions": "Vcc = 3.3V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Threshold HIGH",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.8,
          "max": 2.4,
          "conditions": "Vcc = 5.0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 3,
          "typ": 5,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "STATUS Output Voltage LOW",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOUT = 1.6mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "Ω",
          "min": 300,
          "typ": null,
          "max": null,
          "conditions": "Vcc = V+ = V- = 0V, Vout = +/-2V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Transition-Region Slew Rate",
          "symbol": "",
          "kind": "electrical",
          "unit": "V/µs",
          "min": 6,
          "typ": null,
          "max": 30,
          "conditions": "Vcc = 3.3V, RL = 3kΩ, CL = 150pF to 1000pF, TAMB = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Driver Skew",
          "symbol": "│tPHL - tPLH│",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 350,
          "max": 800,
          "conditions": "RL = 3kΩ, CL = 1000pF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver Skew",
          "symbol": "│tPHL - tPLH│",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 800,
          "conditions": "CL = 150pF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Data Rate",
          "symbol": "",
          "kind": "electrical",
          "unit": "kbps",
          "min": 250,
          "typ": null,
          "max": null,
          "conditions": "RL = 3kΩ, CL = 1000pF",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Charge pump capacitor C1 - C4 (minimum)",
          "symbol": "C1-C4",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.22,
          "typ": null,
          "max": null,
          "conditions": "VCC 3.0V to 5.5V",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "Charge pump capacitor C1 - C4 (minimum)",
          "symbol": "C1-C4",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.1,
          "typ": null,
          "max": null,
          "conditions": "VCC 3.0V to 3.6V",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "Charge pump capacitor C1 (minimum)",
          "symbol": "C1",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.047,
          "typ": null,
          "max": null,
          "conditions": "VCC 4.5V to 5.5V",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "Charge pump capacitor C2 - C4 (minimum)",
          "symbol": "C2-C4",
          "kind": "recommended_operating",
          "unit": "µF",
          "min": 0.33,
          "typ": null,
          "max": null,
          "conditions": "VCC 4.5V to 5.5V",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 5.5,
          "conditions": "TAMB = TMIN to TMAX",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature",
          "symbol": "TAMB",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "SP3221EEY-L/TR temperature range per ordering information",
          "source_page": 19,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage (absolute maximum)",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "V+ (Note 1)",
          "symbol": "V+",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "V- (Note 1)",
          "symbol": "V-",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -7,
          "typ": null,
          "max": 0.3,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "V+ + |V-| (Note 1)",
          "symbol": "V+ + |V-|",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 13,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "DC VCC or GND current",
          "symbol": "ICC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (TxIN, ONLINE, SHUTDOWN, EN)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Printed as VCC + 0.3V (expression, max not numeric)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (RxIN)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (TxOUT)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 13.2,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (RxOUT, STATUS)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Printed as VCC + 0.3V (expression, max not numeric)",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD Human Body Model (Driver Output)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "MIL-STD-883 Method 3015.7 (1.5kΩ, 100pF)",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "ESD Human Body Model (Receiver Input)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "MIL-STD-883 Method 3015.7 (1.5kΩ, 100pF)",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "ESD IEC61000-4-2 Air Discharge (Driver Output)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "IEC61000-4-2 (330Ω, 150pF)",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "ESD IEC61000-4-2 Contact Discharge (Driver Output)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -8,
          "typ": null,
          "max": 8,
          "conditions": "IEC61000-4-2 direct contact (330Ω, 150pF)",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "ESD IEC61000-4-2 Air Discharge (Receiver Input)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "IEC61000-4-2 (330Ω, 150pF)",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "ESD IEC61000-4-2 Contact Discharge (Receiver Input)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": -8,
          "typ": null,
          "max": 8,
          "conditions": "IEC61000-4-2 direct contact (330Ω, 150pF)",
          "source_page": 16,
          "source": "datasheet"
        },
        {
          "name": "Receiver Output Enable Time",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "Normal Operation",
          "source_page": 4,
          "source": "datasheet"
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