MAX3222EEUP+T

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  "slug": "max3222eeup-t",
  "title": "MAX3222EEUP+T",
  "brief": "Analog Devices Inc Maxim Integrated RS232 ICs, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "interface",
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    "mpn": "MAX3222EEUP+T",
    "manufacturer": "Analog Devices Inc Maxim Integrated",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Interface",
    "subcategory": "RS232 ICs",
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    "distributor_links": {
      "lcsc": "C124672",
      "digikey": "MAX3222EEUP+TR-ND",
      "mouser": "700-MAX3222EEUPT"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T02:34:30Z",
      "source": "Component Ocean /api/assign-pns",
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        "pn": "MAX3222EEUP+TR-ND",
        "status": "found"
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      "mouser": {
        "pn": "700-MAX3222EEUPT",
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      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Receiver Enable, active low; driving EN high places the receiver outputs in a high-impedance state (input logic low max 0.8V)."
      },
      {
        "number": "2",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the voltage-doubler charge-pump capacitor."
      },
      {
        "number": "3",
        "name": "V+",
        "type": "power_out",
        "description": "+5.5V generated by the charge pump, with a reservoir capacitor connected."
      },
      {
        "number": "4",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of the voltage-doubler charge-pump capacitor."
      },
      {
        "number": "5",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the inverting charge-pump capacitor."
      },
      {
        "number": "6",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of the inverting charge-pump capacitor."
      },
      {
        "number": "7",
        "name": "V-",
        "type": "power_out",
        "description": "-5.5V generated by the charge pump, with a reservoir capacitor connected."
      },
      {
        "number": "8",
        "name": "T2OUT",
        "type": "output",
        "description": "RS-232 transmitter 2 output, high-impedance in shutdown and tolerant of being driven up to ±12V in shutdown."
      },
      {
        "number": "9",
        "name": "R2IN",
        "type": "input",
        "description": "RS-232 receiver 2 input, ESD protected to ±15kV, absolute maximum ±25V."
      },
      {
        "number": "10",
        "name": "R2OUT",
        "type": "tri_state",
        "description": "TTL/CMOS receiver 2 output, three-state via EN and active in shutdown."
      },
      {
        "number": "11",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "12",
        "name": "T2IN",
        "type": "input",
        "description": "TTL/CMOS transmitter 2 input with no pullup resistor; connect unused input to GND or VCC."
      },
      {
        "number": "13",
        "name": "T1IN",
        "type": "input",
        "description": "TTL/CMOS transmitter 1 input with no pullup resistor; connect unused input to GND or VCC."
      },
      {
        "number": "14",
        "name": "N.C.",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "15",
        "name": "R1OUT",
        "type": "tri_state",
        "description": "TTL/CMOS receiver 1 output, three-state via EN and active in shutdown."
      },
      {
        "number": "16",
        "name": "R1IN",
        "type": "input",
        "description": "RS-232 receiver 1 input, ESD protected to ±15kV, absolute maximum ±25V."
      },
      {
        "number": "17",
        "name": "T1OUT",
        "type": "output",
        "description": "RS-232 transmitter 1 output, high-impedance in shutdown and tolerant of being driven up to ±12V in shutdown."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "19",
        "name": "VCC",
        "type": "power_in",
        "description": "+3.0V to +5.5V supply voltage."
      },
      {
        "number": "20",
        "name": "SHDN",
        "type": "input",
        "description": "Shutdown control, active low; SHDN = GND disables transmitters and charge pump for 1µA supply current while receivers stay active."
      }
    ],
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        "total": 20,
        "described": 20,
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          "name": "Input resistance (R_IN)",
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          "name": "ESD Human Body Model",
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          "name": "ESD IEC 1000-4-2 Air-Gap Discharge",
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          "name": "ESD IEC 1000-4-2 Contact Discharge (R_IN, T_OUT)",
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          "name": "Maximum data rate",
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