MAX3221EUE+T

{
  "slug": "max3221eue-t",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Inc Maxim Integrated RS232 ICs, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface",
    "max3221eue+t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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  "files": [
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    "README.md",
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    "max3221eue-t.kicad_mod",
    "max3221eue-t.glb",
    "max3221eue-t.step",
    "max3221eue-t.lbr",
    "docs/hero.png",
    "docs/max3221eue-t-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "max3221eue-t-hero.glb",
    "max3221eue-t-hero.overlay.json",
    "max3221eue-t-etched.glb"
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  "component": {
    "mpn": "MAX3221EUE+T",
    "manufacturer": "Analog Devices Inc Maxim Integrated",
    "package": "TSSOP-16",
    "pin_count": 16,
    "category": "Interface",
    "subcategory": "RS232 ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588902855071698944",
    "parts": {
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      "footprint": "max3221eue-t.kicad_mod",
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      "model_3d_step_plain": "max3221eue-t.step",
      "lbr": "max3221eue-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C2671554",
      "digikey": "MAX3221EUE+TTR-ND",
      "mouser": "700-MAX3221EUET"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T07:05:04Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "MAX3221EUE+TTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "700-MAX3221EUET",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "EN",
        "type": "input",
        "description": "Receiver enable control: drive low for normal operation and drive high to force the receiver outputs into a high-impedance state."
      },
      {
        "number": "2",
        "name": "C1+",
        "type": "passive",
        "description": "Positive terminal of the voltage doubler charge-pump capacitor (C1, 0.1µF for 3.3V operation)."
      },
      {
        "number": "3",
        "name": "V+",
        "type": "power_out",
        "description": "+5.5V supply generated by the charge pump, which requires a reservoir capacitor (C3) and is regulated over the +3.0V to +5.5V VCC range."
      },
      {
        "number": "4",
        "name": "C1-",
        "type": "passive",
        "description": "Negative terminal of the voltage doubler charge-pump capacitor (C1)."
      },
      {
        "number": "5",
        "name": "C2+",
        "type": "passive",
        "description": "Positive terminal of the inverting charge-pump capacitor (C2)."
      },
      {
        "number": "6",
        "name": "C2-",
        "type": "passive",
        "description": "Negative terminal of the inverting charge-pump capacitor (C2)."
      },
      {
        "number": "7",
        "name": "V-",
        "type": "power_out",
        "description": "-5.5V supply generated by the inverting charge pump, which requires a reservoir capacitor (C4)."
      },
      {
        "number": "8",
        "name": "R1IN",
        "type": "input",
        "description": "RS-232 receiver input with an input voltage range of -25V to +25V and a typical input resistance of 5kΩ."
      },
      {
        "number": "9",
        "name": "R1OUT",
        "type": "output",
        "description": "TTL/CMOS receiver output; the receiver is an inverting three-state output that goes high-impedance when EN is driven high."
      },
      {
        "number": "10",
        "name": "INVALID",
        "type": "output",
        "description": "Output of the valid signal detector that is high when a valid RS-232 level is present on the receiver inputs and low when the device is in AutoShutdown."
      },
      {
        "number": "11",
        "name": "T1IN",
        "type": "input",
        "description": "TTL/CMOS transmitter input with logic threshold low of 0.8V maximum and threshold high of 2.0V (VCC = 3.3V) or 2.4V (VCC = 5.0V)."
      },
      {
        "number": "12",
        "name": "FORCEON",
        "type": "input",
        "description": "Drive high to override the automatic circuitry and keep the transmitters on; FORCEOFF must be high for this to apply."
      },
      {
        "number": "13",
        "name": "T1OUT",
        "type": "output",
        "description": "RS-232 transmitter output with a voltage swing of at least ±5.0V into a 3kΩ load, forced to high-impedance when the transmitters are disabled."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "15",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage of +3.0V to +5.5V."
      },
      {
        "number": "16",
        "name": "FORCEOFF",
        "type": "input",
        "description": "Drive low to shut down the transmitters and on-board power supply; this overrides all automatic circuitry and FORCEON."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet lists the ordering part as MAX3221EUE with a dagger marking it as a future product (co; The 16-pin SSOP and TSSOP share one pinout in the datasheet (Pin Configurations and Pin Description ",
          "2/16 pins cited to the wrong page (name found elsewhere): ['8:R1IN@p5', '9:R1OUT@p5']"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0881,
        "at": "2026-10-19T07:04:47"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588902855071698944",
        "pages": 16,
        "sha256": "4b10ea08c7155060",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "origin": "footprint origin = pad-pattern centre",
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        "checked": "2026-10-19",
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}