SP3243EUER-L

{
  "schema_version": 1,
  "type": "component",
  "slug": "sp3243euer-l",
  "title": "SP3243EUER-L",
  "brief": "MaxLinear Pre-ordered Chips, QFN-32-EP(5x5). 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 ics",
    "sp3243euer-l",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "SP3243EUER-L",
    "manufacturer": "MaxLinear",
    "package": "QFN-32-EP(5x5)",
    "pin_count": 33,
    "category": "Interface ICs",
    "subcategory": "Pre-ordered Chips",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8fd01a68943ea615ac5a0c37b32b3b48.pdf",
    "parts": {
      "symbol": "sp3243euer-l.kicad_sym",
      "footprint": "sp3243euer-l.kicad_mod",
      "model_3d": "sp3243euer-l-hero.glb",
      "model_3d_plain": "sp3243euer-l-etched.glb",
      "model_3d_step": "sp3243euer-l-etched.step",
      "model_3d_step_plain": "sp3243euer-l.step",
      "lbr": "sp3243euer-l.lbr"
    },
    "distributor_links": {
      "lcsc": "C2671824",
      "digikey": "SP3243EUER-L-ND",
      "mouser": "701-SP3243EUER-L"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T16:28:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "SP3243EUER-L-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "701-SP3243EUER-L",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "2",
        "name": "R1IN",
        "type": "input",
        "description": "RS-232 receiver input."
      },
      {
        "number": "3",
        "name": "R2IN",
        "type": "input",
        "description": "RS-232 receiver input."
      },
      {
        "number": "4",
        "name": "R3IN",
        "type": "input",
        "description": "RS-232 receiver input."
      },
      {
        "number": "5",
        "name": "R4IN",
        "type": "input",
        "description": "RS-232 receiver input."
      },
      {
        "number": "6",
        "name": "R5IN",
        "type": "input",
        "description": "RS-232 receiver input."
      },
      {
        "number": "7",
        "name": "T1OUT",
        "type": "output",
        "description": "RS-232 driver output."
      },
      {
        "number": "8",
        "name": "T2OUT",
        "type": "output",
        "description": "RS-232 driver output."
      },
      {
        "number": "9",
        "name": "T3OUT",
        "type": "output",
        "description": "RS-232 driver output."
      },
      {
        "number": "10",
        "name": "T3IN",
        "type": "input",
        "description": "TTL/CMOS driver input."
      },
      {
        "number": "11",
        "name": "T2IN",
        "type": "input",
        "description": "TTL/CMOS driver input."
      },
      {
        "number": "12",
        "name": "T1IN",
        "type": "input",
        "description": "TTL/CMOS driver input."
      },
      {
        "number": "13",
        "name": "R5OUT",
        "type": "output",
        "description": "TTL/CMOS receiver output."
      },
      {
        "number": "14",
        "name": "R4OUT",
        "type": "output",
        "description": "TTL/CMOS receiver output."
      },
      {
        "number": "15",
        "name": "R3OUT",
        "type": "output",
        "description": "TTL/CMOS receiver output."
      },
      {
        "number": "16",
        "name": "R2OUT",
        "type": "output",
        "description": "TTL/CMOS receiver output."
      },
      {
        "number": "17",
        "name": "R1OUT",
        "type": "output",
        "description": "TTL/CMOS receiver output."
      },
      {
        "number": "18",
        "name": "R2OUT",
        "type": "output",
        "description": "Non-inverting receiver-2 output, active in shutdown."
      },
      {
        "number": "19",
        "name": "STATUS",
        "type": "output",
        "description": "TTL/CMOS output indicating online and shutdown status."
      },
      {
        "number": "20",
        "name": "SHUTDOWN",
        "type": "input",
        "description": "Apply logic LOW to shut down the driver and charge pump, overriding all AUTO-ONLINE circuitry and ONLINE."
      },
      {
        "number": "21",
        "name": "ONLINE",
        "type": "input",
        "description": "Apply logic HIGH to override AUTO-ONLINE circuitry keeping drivers active (SHUTDOWN must also be logic HIGH)."
      },
      {
        "number": "22",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of the voltage doubler charge-pump capacitor."
      },
      {
        "number": "23",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "24",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "25",
        "name": "VCC",
        "type": "power_in",
        "description": "+3.0V to +5.5V supply voltage."
      },
      {
        "number": "26",
        "name": "V+",
        "type": "power_out",
        "description": "Regulated +5.5V output generated by the charge pump."
      },
      {
        "number": "27",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "28",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the voltage doubler charge-pump capacitor."
      },
      {
        "number": "29",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the inverting charge-pump capacitor."
      },
      {
        "number": "30",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "31",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of the inverting charge-pump capacitor."
      },
      {
        "number": "32",
        "name": "V-",
        "type": "power_out",
        "description": "Regulated -5.5V output generated by the charge pump."
      },
      {
        "number": "33",
        "name": "PAD",
        "type": "passive",
        "description": "Exposed thermal PAD on QFN package, recommended to connect to GND."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-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 lists two pins named R2OUT on the QFN. Pin 16 is the normal TTL/CMOS receiver output. ; The exposed pad has no pin number in the table (printed as '-'). I assigned '33' and typed it passiv; The pin table column is headed 'SP3243EUCR QFN', while the MPN ordered is SP3243EUER-L. Ordering inf",
          "1/33 pins cited to the wrong page (name found elsewhere): ['33:PAD@p12']"
        ],
        "pages_sent": 22,
        "cost_usd": 0.1727,
        "at": "2026-10-30T16:28:37"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/8fd01a68943ea615ac5a0c37b32b3b48.pdf",
        "pages": 30,
        "sha256": "ea4b22b2d3fb360a",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "sp3243euer-l.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.875
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sp3243euer-l-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.875
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "83dc188f5ed7fb13e03c1e875af32b69767438513570e559a332aa161bfd0827",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "MaxLinear",
      "Package": "QFN-32-EP(5x5)",
      "Category": "Interface ICs",
      "Pins": "33"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "ea4b22b2d3fb360ac5215a11704ceff1ce36c673a04ec6edb5762393182a8bab",
      "rows": [
        {
          "name": "Supply voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "V+ voltage",
          "symbol": "V+",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "absolute difference V+ and V- cannot exceed 13V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "V+ + |V-|",
          "symbol": "V+ + |V-|",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 13,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "ICC (DC VCC or GND current)",
          "symbol": "ICC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -100,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input voltage TxIN, ONLINE, SHUTDOWN",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input voltage RxIN",
          "symbol": "RxIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -25,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Output voltage TxOUT",
          "symbol": "TxOUT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -13.2,
          "typ": null,
          "max": 13.2,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation 32-pin QFN",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 2352,
          "conditions": "derate 29.4mW/°C above +70°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "SP3243EUER-L/TR, extended range",
          "source_page": 29,
          "source": "datasheet"
        },
        {
          "name": "Supply current, AUTO-ONLINE",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.5,
          "max": 2,
          "conditions": "All RxIN open, ONLINE = GND, SHUTDOWN = VCC, VCC = 3.3V, TAMB = 25oC, TxIN = GND or VCC",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Supply current, shutdown",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.5,
          "max": 2,
          "conditions": "SHUTDOWN = GND, VCC = 3.3V, TAMB = 25oC, TxIN = VCC or GND",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Supply current, AUTO-ONLINE disabled",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.6,
          "max": 1,
          "conditions": "ONLINE = SHUTDOWN = Vcc, no load, VCC = 3.3V, TAMB = +25oC, TxIN = GND or VCC",
          "source_page": 8,
          "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, ONLINE, SHUTDOWN",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input logic threshold High",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": null,
          "conditions": "VCC = 3.3V or 5.0V, TxIN, ONLINE, SHUTDOWN",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Input leakage current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -1,
          "typ": 0.01,
          "max": 1,
          "conditions": "TxIN, ONLINE, SHUTDOWN, TAMB = +25°C, VIN = 0V to VCC",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Receiver output leakage current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -10,
          "typ": 0.05,
          "max": 10,
          "conditions": "Receivers disabled, VOUT = 0V to VCC",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Output voltage Low",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "IOUT = 1.6mA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Driver output voltage swing",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 5,
          "typ": 5.4,
          "max": null,
          "conditions": "All driver outputs loaded with 3kΩ to GND, TAMB = +25oC",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Driver output resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "Ω",
          "min": 300,
          "typ": null,
          "max": null,
          "conditions": "VCC = V+ = V- = 0V, VOUT = ±2V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Driver output short-circuit current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 35,
          "max": 60,
          "conditions": "VOUT = 0V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Driver output leakage current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": -25,
          "typ": null,
          "max": 25,
          "conditions": "VCC = 0V or 3.0V to 5.5V, VOUT = ±12V, drivers disabled",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Receiver input voltage range",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": -15,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Receiver input threshold Low (VCC = 3.3V)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.6,
          "typ": 1.2,
          "max": null,
          "conditions": "VCC = 3.3V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Receiver input threshold Low (VCC = 5.0V)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": 1.5,
          "max": null,
          "conditions": "VCC = 5.0V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Receiver input threshold High (VCC = 3.3V)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.5,
          "max": 2.4,
          "conditions": "VCC = 3.3V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Receiver input threshold High (VCC = 5.0V)",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.8,
          "max": 2.4,
          "conditions": "VCC = 5.0V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Receiver input hysteresis",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.3,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Receiver input resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 3,
          "typ": 5,
          "max": 7,
          "conditions": "",
          "source_page": 8,
          "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": 9,
          "source": "datasheet"
        },
        {
          "name": "Receiver threshold to drivers enabled",
          "symbol": "tONLINE",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": null,
          "max": 350,
          "conditions": "Figure 20",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Receiver threshold to STATUS High",
          "symbol": "tSTSH",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 0.2,
          "max": null,
          "conditions": "Figure 20",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Receiver threshold to STATUS Low",
          "symbol": "tSTSL",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "Figure 20",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Maximum data rate (U)",
          "symbol": "",
          "kind": "timing",
          "unit": "kbps",
          "min": 1000,
          "typ": null,
          "max": null,
          "conditions": "RL = 3kΩ, CL = 250pF, one driver active",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Receiver propagation delay tPHL",
          "symbol": "tPHL",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 0.15,
          "max": null,
          "conditions": "Receiver input to receiver output, CL = 150pF",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Receiver propagation delay tPLH",
          "symbol": "tPLH",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 0.15,
          "max": null,
          "conditions": "Receiver input to receiver output, CL = 150pF",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Receiver output enable time",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "Normal operation",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Receiver output disable time",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "Normal operation",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Driver skew (EH, EU)",
          "symbol": "| tPHL - tPLH |",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": 100,
          "conditions": "EH, EU",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Receiver skew",
          "symbol": "| tPHL - tPLH |",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "",
          "source_page": 9,
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    "email": "[email protected]"
  },
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}