SIT3232EEUE

{
  "schema_version": 1,
  "type": "component",
  "slug": "sit3232eeue",
  "title": "SIT3232EEUE",
  "brief": "SIT RS232 ICs, TSSOP-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "sit3232eeue"
  ],
  "component": {
    "mpn": "SIT3232EEUE",
    "manufacturer": "SIT",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "RS232 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c6672d498987cb14c9431fd31063bd26.pdf",
    "parts": {
      "symbol": "sit3232eeue.kicad_sym",
      "footprint": "sit3232eeue.kicad_mod",
      "model_3d": "sit3232eeue-etched.glb",
      "model_3d_plain": "sit3232eeue.glb",
      "model_3d_step": "sit3232eeue-etched.step",
      "model_3d_step_plain": "sit3232eeue.step",
      "lbr": "sit3232eeue.lbr"
    },
    "distributor_links": {
      "lcsc": "C403913"
    },
    "pins": [
      {
        "number": "1",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the first charge-pump flying capacitor (C1). Connect a 1µF capacitor between C1+ and C1- to enable the voltage-doubler stage that generates V+."
      },
      {
        "number": "2",
        "name": "V+",
        "type": "power_out",
        "description": "Doubled positive supply output from the internal charge pump (approximately +2×VCC). Bypass to GND with a 1µF capacitor. Absolute max VCC-0.3 to +7V."
      },
      {
        "number": "3",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of the first charge-pump flying capacitor (C1). Pairs with C1+ via a 1µF external capacitor."
      },
      {
        "number": "4",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the second charge-pump flying capacitor (C2). Connect a 1µF capacitor between C2+ and C2- to enable the inverter stage that generates V-."
      },
      {
        "number": "5",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of the second charge-pump flying capacitor (C2). Pairs with C2+ via a 1µF external capacitor."
      },
      {
        "number": "6",
        "name": "V-",
        "type": "power_out",
        "description": "Inverted (negative) supply output from the internal charge pump (approximately -2×VCC). Bypass to GND with a 1µF capacitor. Absolute max +0.3 to -7V."
      },
      {
        "number": "7",
        "name": "T2OUT",
        "type": "output",
        "description": "Second RS-232 transmitter output (driver 2). Drives the external RS-232 line at ±4 to ±5V into a 3kΩ load; ESD protected to ±15kV HBM / ±8kV IEC contact. Absolute max output swing ±13.2V."
      },
      {
        "number": "8",
        "name": "R2IN",
        "type": "input",
        "description": "Second RS-232 receiver input (receiver 2). Accepts ±25V RS-232-level signals; input impedance 3-7kΩ typ 5kΩ; thresholds VRIL 0.6V min / VRIH 2.4V max at VCC=3.3V. ESD protected to ±15kV HBM."
      },
      {
        "number": "9",
        "name": "R2OUT",
        "type": "output",
        "description": "Second receiver logic-level output (CMOS). Drives VCC-referenced logic: VOL ≤ 0.4V @ 1.6mA, VOH ≥ VCC-0.6V @ 0.5mA."
      },
      {
        "number": "10",
        "name": "T2IN",
        "type": "input",
        "description": "Second transmitter logic input (CMOS/TTL). VIL ≤ 0.8V, VIH ≥ 2V, 0.3V typ hysteresis, input current ≤ ±1µA. Absolute max -0.3 to +6V."
      },
      {
        "number": "11",
        "name": "T1IN",
        "type": "input",
        "description": "First transmitter logic input (CMOS/TTL). VIL ≤ 0.8V, VIH ≥ 2V, 0.3V typ hysteresis, input current ≤ ±1µA. Absolute max -0.3 to +6V."
      },
      {
        "number": "12",
        "name": "R1OUT",
        "type": "output",
        "description": "First receiver logic-level output (CMOS). Drives VCC-referenced logic: VOL ≤ 0.4V @ 1.6mA, VOH ≥ VCC-0.6V @ 0.5mA."
      },
      {
        "number": "13",
        "name": "R1IN",
        "type": "input",
        "description": "First RS-232 receiver input (receiver 1). Accepts ±25V RS-232-level signals; input impedance 3-7kΩ typ 5kΩ; thresholds VRIL 0.6V min / VRIH 2.4V max at VCC=3.3V. ESD protected to ±15kV HBM."
      },
      {
        "number": "14",
        "name": "T1OUT",
        "type": "output",
        "description": "First RS-232 transmitter output (driver 1). Drives the external RS-232 line at ±4 to ±5V into a 3kΩ load; short-circuit current 60mA max; ESD protected to ±15kV HBM / ±8kV IEC contact."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for all signals and the charge pump."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input, 3.0V to 5.5V (typ 3.3V). Bypass to GND with a 1µF capacitor. Absolute max -0.3 to +6V; typical supply current 2mA (no load)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/c6672d498987cb14c9431fd31063bd26.pdf",
        "pages": 12,
        "sha256": "2714c7267d52ec1d",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.8625,
        -2.275
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TSSOP-16_4.4x5mm_P0.65mm@sha256:fbac79fc5f310754",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "sit3232eeue.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6ad5e98224d02a427d9a6b929a28dbc158b9925fba5adec12db05079f1016948",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sit3232eeue-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c1245a4eb2f788c6f192b9de9dd2e7d24b779bd65c34cd2d3dc7ebf22efb52f1",
        "checked": "2026-10-26",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "SIT",
      "Package": "TSSOP-16",
      "Category": "Interface",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sit3232eeue"
  ],
  "discovery_pitch": "SIT3232EEUE (SIT) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "sit3232eeue.kicad_sym",
    "sit3232eeue.kicad_mod",
    "sit3232eeue.glb",
    "sit3232eeue.step",
    "sit3232eeue-etched.step",
    "sit3232eeue.lbr",
    "docs/hero.png",
    "docs/sit3232eeue-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SIT3232EEUE",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T06:03:46.542Z"
}