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Ray Set visibility: public 56c3539 7d ago
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  "slug": "max232cse",
  "title": "MAX232CSE",
  "brief": "UMW RS232 ICs, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "mpn": "MAX232CSE",
    "manufacturer": "UMW",
    "package": "SOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "RS232 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757270698542936064",
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      "model_3d_step_plain": "max232cse.step",
      "lbr": "max232cse.lbr"
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    "distributor_links": {
      "lcsc": "C5721294"
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    "distributor_check": {
      "checked_at": "2026-10-18T16:34:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the first charge-pump capacitor (C1), connected between C1+ and C1-."
      },
      {
        "number": "2",
        "name": "V+",
        "type": "power_out",
        "description": "Positive charge-pump output, generated at about +2 VCC for the RS-232 driver supply."
      },
      {
        "number": "3",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of the first charge-pump capacitor (C1), connected between C1+ and C1-."
      },
      {
        "number": "4",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the second charge-pump capacitor (C2), connected between C2+ and C2-."
      },
      {
        "number": "5",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of the second charge-pump capacitor (C2), connected between C2+ and C2-."
      },
      {
        "number": "6",
        "name": "V-",
        "type": "power_out",
        "description": "Negative charge-pump output, generated at about -2 VCC for the RS-232 driver supply."
      },
      {
        "number": "7",
        "name": "T2OUT",
        "type": "output",
        "description": "RS-232 driver 2 output, which drives the RS-232 line; the absolute maximum transmitter output voltage is listed as V- to V+ in the ratings table."
      },
      {
        "number": "8",
        "name": "R2IN",
        "type": "input",
        "description": "RS-232 receiver 2 input, accepting RS-232 levels with the receiver input voltage range of ±30 V in the ratings table."
      },
      {
        "number": "9",
        "name": "R2OUT",
        "type": "output",
        "description": "RS-232 receiver 2 output, providing TTL/CMOS logic levels to the controller."
      },
      {
        "number": "10",
        "name": "T2IN",
        "type": "input",
        "description": "TTL/CMOS input to RS-232 driver 2, which is referenced to VCC and sets the T2OUT state."
      },
      {
        "number": "11",
        "name": "T1IN",
        "type": "input",
        "description": "TTL/CMOS input to RS-232 driver 1, which is referenced to VCC and sets the T1OUT state."
      },
      {
        "number": "12",
        "name": "R1OUT",
        "type": "output",
        "description": "RS-232 receiver 1 output, providing TTL/CMOS logic levels to the controller."
      },
      {
        "number": "13",
        "name": "R1IN",
        "type": "input",
        "description": "RS-232 receiver 1 input, accepting RS-232 levels with the receiver input voltage range of ±30 V in the ratings table."
      },
      {
        "number": "14",
        "name": "T1OUT",
        "type": "output",
        "description": "RS-232 driver 1 output, which drives the RS-232 line; the absolute maximum transmitter output voltage is listed as V- to V+ in the ratings table."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
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      {
        "number": "16",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input, 4.5 V to 5.5 V (5 V nominal)."
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        "guard_notes": [
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    "specs": {
      "Manufacturer": "UMW",
      "Package": "SOP-16",
      "Category": "Interface",
      "Pins": "16"
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          "name": "Operating voltage range",
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          "min": null,
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          "conditions": "No load, TA= 25°C",
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          "name": "Input leakage current",
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        {
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        {
          "name": "Input threshold high (logic)",
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          "min": null,
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        {
          "name": "Output voltage high",
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          "min": 3.5,
          "typ": null,
          "max": null,
          "conditions": "R_OUT, IOUT=-1mA",
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        {
          "name": "Receiver input voltage range",
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          "min": -30,
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        {
          "name": "Receiver input threshold low",
          "symbol": "Vff",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": null,
          "conditions": "TA=+25°C, VCC=5V",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "Receiver input threshold high",
          "symbol": "Von",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": null,
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        {
          "name": "Receiver input hysteresis",
          "symbol": "Vh",
          "kind": "electrical",
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          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "TA=+25°C, VCC=5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Receiver input resistance",
          "symbol": "RI",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Transmitter output resistance",
          "symbol": "RO",
          "kind": "electrical",
          "unit": "Ω",
          "min": 300,
          "typ": null,
          "max": null,
          "conditions": "VCC=V+=V-=0V, VOUT=+2V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Transmitter output short-circuit current",
          "symbol": "ISC",
          "kind": "electrical",
          "unit": "mA",
          "min": -60,
          "typ": null,
          "max": 60,
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        {
          "name": "Transmitter output voltage swing",
          "symbol": "ΔVO",
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          "unit": "V",
          "min": -5,
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          "max": 5,
          "conditions": "All driver inputs loaded with 3kΩ to ground",
          "source_page": 4,
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        },
        {
          "name": "Maximum data rate",
          "symbol": "",
          "kind": "timing",
          "unit": "kbps",
          "min": 120,
          "typ": null,
          "max": null,
          "conditions": "RL=3kΩ to 7kΩ, CL=50pF to 1000pF, all parts, normal operation (Fig. 1)",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Transition-region slew rate",
          "symbol": "SR",
          "kind": "timing",
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          "min": 3,
          "typ": null,
          "max": 30,
          "conditions": "RL=3kΩ to 7kΩ, CL=50pF to 2500pF, measured from -3V to +3V or +3V to -3V (Fig.3)",
          "source_page": 5,
          "source": "datasheet"
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        {
          "name": "Supply voltage (absolute maximum)",
          "symbol": "VCC",
          "kind": "absolute_maximum",
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          "min": -0.3,
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          "max": 6,
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          "source_page": 3,
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        {
          "name": "V+ output (absolute maximum)",
          "symbol": "V+",
          "kind": "absolute_maximum",
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          "min": null,
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          "source_page": 3,
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          "name": "V- output (absolute maximum)",
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          "name": "Transmitter input voltage (absolute maximum)",
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          "name": "Receiver input voltage (absolute maximum)",
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          "max": 30,
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        {
          "name": "Receiver output voltage (absolute maximum)",
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          "name": "Power dissipation",
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          "conditions": "SO package, derate 9.52 mW/°C above 70°C",
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          "name": "Storage temperature",
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          "min": -60,
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        {
          "name": "Operating temperature (C grade)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": 0,
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          "conditions": "MAX2_ _AC_ _, MAX2_ _C/D",
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