SIT232ESE

{
  "schema_version": 1,
  "type": "component",
  "slug": "sit232ese",
  "title": "SIT232ESE",
  "brief": "SIT RS232 ICs, SO-16. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface",
    "sit232ese"
  ],
  "component": {
    "mpn": "SIT232ESE",
    "manufacturer": "SIT",
    "package": "SO-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "RS232 ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/41e461530466d9360e96cee4eeb817b5.pdf",
    "parts": {
      "symbol": "sit232ese.kicad_sym",
      "footprint": "sit232ese.kicad_mod",
      "model_3d": "sit232ese-etched.glb",
      "model_3d_plain": "sit232ese.glb",
      "model_3d_step": "sit232ese-etched.step",
      "model_3d_step_plain": "sit232ese.step",
      "lbr": "sit232ese.lbr"
    },
    "distributor_links": {
      "lcsc": "C313016"
    },
    "pins": [
      {
        "number": "1",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the voltage-doubler charge-pump flying capacitor C1 (typ. 1uF to C1-)."
      },
      {
        "number": "2",
        "name": "V+",
        "type": "power_out",
        "description": "Voltage-doubler charge-pump output (approximately +10V no-load). Bypass to GND with a 1uF storage capacitor (C3)."
      },
      {
        "number": "3",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of the voltage-doubler charge-pump flying capacitor C1."
      },
      {
        "number": "4",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the inverting charge-pump flying capacitor C2 (typ. 1uF to C2-)."
      },
      {
        "number": "5",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of the inverting charge-pump flying capacitor C2."
      },
      {
        "number": "6",
        "name": "V-",
        "type": "power_out",
        "description": "Inverting charge-pump output (approximately -10V no-load). Bypass to GND with a 1uF storage capacitor (C4)."
      },
      {
        "number": "7",
        "name": "T2OUT",
        "type": "output",
        "description": "RS-232 level output of transmitter channel 2. Output swing typically ±5V (min) to ±7.3V (typ) into a 3kΩ load; short-circuit current limited to ±60mA max."
      },
      {
        "number": "8",
        "name": "R2IN",
        "type": "input",
        "description": "RS-232 level input of receiver channel 2. Accepts ±30V, input impedance 3-7 kΩ (typ 5 kΩ). Thresholds: VRIL 0.8V min, VRIH 2.4V max."
      },
      {
        "number": "9",
        "name": "R2OUT",
        "type": "output",
        "description": "CMOS/TTL logic output of receiver channel 2 (inverting). VOL ≤ 0.4V @ 3.2mA, VOH ≥ 3.5V @ -1mA."
      },
      {
        "number": "10",
        "name": "T2IN",
        "type": "input",
        "description": "TTL/CMOS logic input to transmitter channel 2. VIL max 0.8V, VIH min 2V, hysteresis 0.3V typ, input current ±10 uA max."
      },
      {
        "number": "11",
        "name": "T1IN",
        "type": "input",
        "description": "TTL/CMOS logic input to transmitter channel 1. VIL max 0.8V, VIH min 2V, hysteresis 0.3V typ, input current ±10 uA max."
      },
      {
        "number": "12",
        "name": "R1OUT",
        "type": "output",
        "description": "CMOS/TTL logic output of receiver channel 1 (inverting). VOL ≤ 0.4V @ 3.2mA, VOH ≥ 3.5V @ -1mA."
      },
      {
        "number": "13",
        "name": "R1IN",
        "type": "input",
        "description": "RS-232 level input of receiver channel 1. Accepts ±30V, input impedance 3-7 kΩ (typ 5 kΩ)."
      },
      {
        "number": "14",
        "name": "T1OUT",
        "type": "output",
        "description": "RS-232 level output of transmitter channel 1. Output swing typically ±5V (min) to ±7.3V (typ) into a 3kΩ load; short-circuit current limited to ±60mA max."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device. Common return for VCC, V+, V-, and all signal thresholds."
      },
      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input, 5V ±10% (absolute max 6V). Quiescent supply current 5 mA typ, 10 mA max (no load). Decouple to GND with a 1uF capacitor placed close to the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/41e461530466d9360e96cee4eeb817b5.pdf",
        "pages": 9,
        "sha256": "f6cc73b5e7143964",
        "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": [
        -2.475,
        -4.445
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-16_3.9x9.9mm_P1.27mm@sha256:f9b5075740f7816c",
      "mark": "drawn"
    },
    "models_3d": [
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        "file": "sit232ese.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          9.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "d5eeddb4c0b304dc61950919b126fc61d7586abd5f16ab71a2a79759ec6498bf",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "sit232ese-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
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        "sha256": "51580f227cb6f2c08d80d9e6841f7a298a72cb85674fe561264ff988bb6696de",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "SIT",
      "Package": "SO-16",
      "Category": "Interface",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "sit232ese"
  ],
  "discovery_pitch": "SIT232ESE (SIT) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "sit232ese.kicad_sym",
    "sit232ese.kicad_mod",
    "sit232ese.glb",
    "sit232ese.step",
    "sit232ese-etched.step",
    "sit232ese.lbr",
    "docs/hero.png",
    "docs/sit232ese-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "SIT232ESE",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T06:02:49.568Z"
}