SP3220EEA-L

{
  "schema_version": 1,
  "type": "component",
  "slug": "sp3220eea-l",
  "title": "SP3220EEA-L",
  "brief": "MaxLinear RS232 ICs, SSOP-16-208mil. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "interface",
    "sp3220eea-l"
  ],
  "component": {
    "mpn": "SP3220EEA-L",
    "manufacturer": "MaxLinear",
    "package": "SSOP-16-208mil",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "RS232 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/cb2cefd84f5c400f93c32172142d8125.pdf",
    "parts": {
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      "footprint": "sp3220eea-l.kicad_mod",
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      "model_3d_plain": "sp3220eea-l.glb",
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      "lbr": "sp3220eea-l.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Receiver Enable Control (active-low, /EN). Drive LOW for normal operation; drive HIGH to tri-state the receiver output R1OUT (high-Z). TTL/CMOS logic level referenced to VCC."
      },
      {
        "number": "2",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the voltage-doubler charge-pump capacitor. Connect a 0.1µF ceramic capacitor between C1+ (pin 2) and C1- (pin 4)."
      },
      {
        "number": "3",
        "name": "V+",
        "type": "power_out",
        "description": "Positive charge-pump output, nominally +5.5V generated by the internal doubler. Bypass with a 0.1µF capacitor to GND (or to VCC)."
      },
      {
        "number": "4",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of the voltage-doubler charge-pump capacitor. Connect a 0.1µF ceramic capacitor between C1+ (pin 2) and C1- (pin 4)."
      },
      {
        "number": "5",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the inverting charge-pump capacitor. Connect a 0.1µF ceramic capacitor between C2+ (pin 5) and C2- (pin 6)."
      },
      {
        "number": "6",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of the inverting charge-pump capacitor. Connect a 0.1µF ceramic capacitor between C2+ (pin 5) and C2- (pin 6)."
      },
      {
        "number": "7",
        "name": "V-",
        "type": "power_out",
        "description": "Negative charge-pump output, nominally -5.5V generated by the inverter. Bypass with a 0.1µF capacitor to GND."
      },
      {
        "number": "8",
        "name": "R1IN",
        "type": "input",
        "description": "RS-232 receiver input. Accepts ±15V RS-232 signaling with typical input threshold LOW 0.6/0.8V and HIGH 1.5/1.8V (at VCC=3.3V/5.0V), ~0.3V hysteresis, and 3-7kΩ input resistance to ground."
      },
      {
        "number": "9",
        "name": "R1OUT",
        "type": "output",
        "description": "TTL/CMOS receiver output. Drives VOL ≤ 0.4V at IOL=1.6mA and VOH ≥ VCC-0.6V at IOH=-1.0mA. Tri-stated when /EN is HIGH; remains active in shutdown so external UARTs can be monitored."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "No Connect. Leave floating or tie according to layout preference."
      },
      {
        "number": "11",
        "name": "T1IN",
        "type": "input",
        "description": "TTL/CMOS driver input. Logic thresholds: VIL ≤ 0.8V, VIH ≥ 2.0V (VCC=3.3V) / 2.4V (VCC=5.0V). Typical input hysteresis 250mV. Datasheet recommends tying an unused input to VCC or GND."
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "No Connect. Leave floating."
      },
      {
        "number": "13",
        "name": "T1OUT",
        "type": "output",
        "description": "RS-232 driver output. Delivers ±5.0V (typ ±5.4V) into a 3kΩ / 1000pF load with internally slew-rate-limited transitions (≤30V/µs). Output resistance 300Ω; short-circuit protected to ground."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for logic, receivers and charge pump."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "+3.0V to +5.5V supply voltage input. Bypass to GND with a 0.1µF ceramic capacitor. Typical supply current 0.3mA (no load); ≤1µA in shutdown."
      },
      {
        "number": "16",
        "name": "SHDN",
        "type": "input",
        "description": "Shutdown Control input (active-low, /SHDN). Drive HIGH for normal operation; drive LOW to shut down the driver (high-Z output) and disable the on-chip charge pump (V+ pulled to VCC, V- pulled to GND). Receiver output R1OUT remains active in shutdown."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/cb2cefd84f5c400f93c32172142d8125.pdf",
        "pages": 18,
        "sha256": "4ab6bc07e882ad10",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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    "pin1": {
      "pad": "1",
      "at": [
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      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SSOP-16_5.3x6.2mm_P0.65mm@sha256:9c0306057d45749f",
      "mark": "drawn"
    },
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        "seat": "z = 0",
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
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        "sha256": "d0e11e46aeca5dbaa5c4bb538f3f4899761267cabdeba6486325ae9e979c03ef",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "sp3220eea-l-etched.step",
        "role": "eda",
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        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "MaxLinear",
      "Package": "SSOP-16-208mil",
      "Category": "Interface",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sp3220eea-l"
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  "discovery_pitch": "SP3220EEA-L (MaxLinear) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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  "visibility": {
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  },
  "variants": [
    {
      "mpn": "SP3220EEA-L",
      "kind": "packaging"
    },
    {
      "mpn": "SP3220EEY",
      "kind": "unknown"
    },
    {
      "mpn": "SP3220ECY",
      "kind": "unknown"
    },
    {
      "mpn": "SP3220EET",
      "kind": "unknown"
    },
    {
      "mpn": "SP3220ECT",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T07:55:55.014Z"
}