SP3243EUEA-L

{
  "schema_version": 1,
  "type": "component",
  "slug": "sp3243euea-l",
  "title": "SP3243EUEA-L",
  "brief": "MaxLinear RS232 ICs, SSOP-28-208mil. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "sp3243euea-l"
  ],
  "component": {
    "mpn": "SP3243EUEA-L",
    "manufacturer": "MaxLinear",
    "package": "SSOP-28-208mil",
    "pin_count": 28,
    "category": "Interface",
    "subcategory": "RS232 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6ed22e6bc134998662fd94c9f47451e7.pdf",
    "parts": {
      "symbol": "sp3243euea-l.kicad_sym",
      "footprint": "sp3243euea-l.kicad_mod",
      "model_3d": "sp3243euea-l-etched.glb",
      "model_3d_plain": "sp3243euea-l.glb",
      "model_3d_step": "sp3243euea-l-etched.step",
      "model_3d_step_plain": "sp3243euea-l.step",
      "lbr": "sp3243euea-l.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the inverting charge-pump flying capacitor (C2 = 0.1µF between C2+ and C2-)."
      },
      {
        "number": "2",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of the inverting charge-pump flying capacitor."
      },
      {
        "number": "3",
        "name": "V-",
        "type": "power_out",
        "description": "Regulated -5.5V output generated by the internal charge pump. Bypass with a 0.1µF capacitor to GND."
      },
      {
        "number": "4",
        "name": "R1IN",
        "type": "input",
        "description": "RS-232 receiver 1 input (±25V tolerant). Internally pulled to GND through ~5kΩ. Accepts RS-232 line levels and produces a TTL/CMOS level on R1OUT."
      },
      {
        "number": "5",
        "name": "R2IN",
        "type": "input",
        "description": "RS-232 receiver 2 input. Complementary always-active receiver - its /R2OUT stays alert during shutdown to monitor an external device (e.g. modem Ring Indicate)."
      },
      {
        "number": "6",
        "name": "R3IN",
        "type": "input",
        "description": "RS-232 receiver 3 input (±25V tolerant, ~5kΩ to GND)."
      },
      {
        "number": "7",
        "name": "R4IN",
        "type": "input",
        "description": "RS-232 receiver 4 input (±25V tolerant, ~5kΩ to GND)."
      },
      {
        "number": "8",
        "name": "R5IN",
        "type": "input",
        "description": "RS-232 receiver 5 input (±25V tolerant, ~5kΩ to GND)."
      },
      {
        "number": "9",
        "name": "T1OUT",
        "type": "output",
        "description": "RS-232 driver 1 output - ±5V-class RS-232 line driver output, slew-rate limited. High-impedance in shutdown."
      },
      {
        "number": "10",
        "name": "T2OUT",
        "type": "output",
        "description": "RS-232 driver 2 output."
      },
      {
        "number": "11",
        "name": "T3OUT",
        "type": "output",
        "description": "RS-232 driver 3 output."
      },
      {
        "number": "12",
        "name": "T3IN",
        "type": "input",
        "description": "TTL/CMOS driver 3 input."
      },
      {
        "number": "13",
        "name": "T2IN",
        "type": "input",
        "description": "TTL/CMOS driver 2 input."
      },
      {
        "number": "14",
        "name": "T1IN",
        "type": "input",
        "description": "TTL/CMOS driver 1 input."
      },
      {
        "number": "15",
        "name": "R5OUT",
        "type": "output",
        "description": "TTL/CMOS receiver 5 output. High-impedance in shutdown."
      },
      {
        "number": "16",
        "name": "R4OUT",
        "type": "output",
        "description": "TTL/CMOS receiver 4 output."
      },
      {
        "number": "17",
        "name": "R3OUT",
        "type": "output",
        "description": "TTL/CMOS receiver 3 output."
      },
      {
        "number": "18",
        "name": "R2OUT",
        "type": "output",
        "description": "TTL/CMOS receiver 2 output (main, tri-stated in shutdown)."
      },
      {
        "number": "19",
        "name": "R1OUT",
        "type": "output",
        "description": "TTL/CMOS receiver 1 output. High-impedance in shutdown."
      },
      {
        "number": "20",
        "name": "/R2OUT",
        "type": "output",
        "description": "Non-inverting complementary R2 output that remains active in shutdown - used to monitor an external device (e.g. modem Ring Indicate) while the transceiver is powered down."
      },
      {
        "number": "21",
        "name": "/STATUS",
        "type": "output",
        "description": "TTL/CMOS status output indicating online and shutdown state of the transceiver. Drives a microprocessor supervisory circuit."
      },
      {
        "number": "22",
        "name": "/SHUTDOWN",
        "type": "input",
        "description": "Active-low shutdown input. Logic LOW disables drivers and charge pump (Icc drops to <1µA); overrides AUTO ON-LINE and /ONLINE. Tie to VCC for normal operation."
      },
      {
        "number": "23",
        "name": "/ONLINE",
        "type": "input",
        "description": "Active-low ONLINE input. Logic HIGH overrides AUTO ON-LINE circuitry and keeps the drivers active (with /SHUTDOWN also HIGH). Logic LOW re-enables AUTO ON-LINE operation."
      },
      {
        "number": "24",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of the voltage-doubler charge-pump flying capacitor (C1 = 0.1µF between C1+ and C1-)."
      },
      {
        "number": "25",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference."
      },
      {
        "number": "26",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply, +3.0V to +5.5V. Bypass with 0.1µF to GND."
      },
      {
        "number": "27",
        "name": "V+",
        "type": "power_out",
        "description": "Regulated +5.5V output generated by the internal charge pump. Bypass with a 0.1µF capacitor to GND."
      },
      {
        "number": "28",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the voltage-doubler charge-pump flying capacitor."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/6ed22e6bc134998662fd94c9f47451e7.pdf",
        "pages": 30,
        "sha256": "ee87c4d95d30c448",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -3.5,
        -4.225
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SSOP-28_5.3x10.2mm_P0.65mm@sha256:bbb0d0449b996c0a",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "sp3243euea-l.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          10.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7aa76979ae41da44bded1ed74115012868f2f3f5a757faf32bb9df4f92c1e313",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sp3243euea-l-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          10.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d7e16fd99b7ab267fb44642010190479353234c922f63a372fded52e809ed955",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "MaxLinear",
      "Package": "SSOP-28-208mil",
      "Category": "Interface",
      "Pins": "28"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sp3243euea-l"
  ],
  "discovery_pitch": "SP3243EUEA-L (MaxLinear) 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",
    "sp3243euea-l.kicad_sym",
    "sp3243euea-l.kicad_mod",
    "sp3243euea-l.glb",
    "sp3243euea-l.step",
    "sp3243euea-l-etched.step",
    "sp3243euea-l.lbr",
    "docs/hero.png",
    "docs/sp3243euea-l-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SP3243EUEA-L/TR",
      "kind": "packaging"
    },
    {
      "mpn": "SP3243EEA-L",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EEA-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243ECA-L",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243ECA-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EBEA-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EHEA-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EUCA-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EBCA-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EHCA-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EUEY-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EEY-L",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EEY-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243ECY-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EBEY-L",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EBEY-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EBCY-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EUCY-L/TR",
      "kind": "unknown"
    },
    {
      "mpn": "SP3243EUER-L/TR",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T07:58:23.674Z"
}