main
Ray Set visibility: public b9c44f9 10d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "max6639fate",
  "title": "MAX6639FATE+",
  "brief": "Maxim Integrated Pre-ordered Chips, TQFN-16(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "interface ics",
    "max6639fate+",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MAX6639FATE+",
    "manufacturer": "Maxim Integrated",
    "package": "TQFN-16(5x5)",
    "pin_count": 17,
    "category": "Interface ICs",
    "subcategory": "Pre-ordered Chips",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/MAX6639-MAX6639F.pdf",
    "parts": {
      "symbol": "max6639fate.kicad_sym",
      "footprint": "max6639fate.kicad_mod",
      "model_3d": "max6639fate-hero.glb",
      "model_3d_plain": "max6639fate-etched.glb",
      "model_3d_step": "max6639fate-etched.step",
      "model_3d_step_plain": "max6639fate.step",
      "lbr": "max6639fate.lbr"
    },
    "distributor_links": {
      "lcsc": "C1519415",
      "digikey": "505-MAX6639FATE+-ND",
      "mouser": "700-MAX6639FATE"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T22:42:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "505-MAX6639FATE+-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "700-MAX6639FATE",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PWM2",
        "type": "output",
        "description": "Open-drain output to the gate or base of the power transistor driving fan 2, which requires a pullup resistor that may go to up to 13.5V regardless of VCC."
      },
      {
        "number": "2",
        "name": "TACH2",
        "type": "input",
        "description": "Tachometer input from fan 2, which requires a pullup resistor that may go to up to 13.5V regardless of VCC."
      },
      {
        "number": "3",
        "name": "FANFAIL",
        "type": "output",
        "description": "Active-low, open-drain fan-failure output that is open circuit when VCC = 0."
      },
      {
        "number": "4",
        "name": "THERM",
        "type": "output",
        "description": "Active-low, open-drain thermal alarm output, typically used for clock throttling, that is open circuit when VCC = 0."
      },
      {
        "number": "5",
        "name": "OT",
        "type": "output",
        "description": "Active-low, open-drain overtemperature output, typically used for system shutdown or clock throttling, that can be pulled up to 5.5V regardless of VCC and is open circuit when VCC = 0."
      },
      {
        "number": "6",
        "name": "VCC",
        "type": "power_in",
        "description": "Power-supply input, 3.3V nominal within a 3.0V to 3.6V operating range, to be bypassed to GND with a 0.1µF capacitor."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; connect to a clean ground reference."
      },
      {
        "number": "8",
        "name": "DXP1",
        "type": "passive",
        "description": "Combined current source and A/D positive input for a remote diode, which must not be left unconnected (connect to DXN if no remote diode is used) and needs a 2200pF capacitor between DXP and DXN for noise filtering."
      },
      {
        "number": "9",
        "name": "DXN",
        "type": "passive",
        "description": "Remote-diode current sink input, to which the cathode of the remote-diode-connected transistor connects."
      },
      {
        "number": "10",
        "name": "DXP2",
        "type": "passive",
        "description": "Combined current source and A/D positive input for a remote diode, which must not be left unconnected (connect to DXN if no remote diode is used) and needs a 2200pF capacitor between DXP and DXN for noise filtering."
      },
      {
        "number": "11",
        "name": "ADD",
        "type": "input",
        "description": "Address input that sets the device slave address; connect to GND, to VCC, or leave unconnected to select one of three unique addresses (see Table 1)."
      },
      {
        "number": "12",
        "name": "ALERT",
        "type": "output",
        "description": "Active-low, open-drain SMBus alert output."
      },
      {
        "number": "13",
        "name": "SCL",
        "type": "input",
        "description": "SMBus serial-clock input that can be pulled up to 5.5V regardless of VCC."
      },
      {
        "number": "14",
        "name": "SDA",
        "type": "bidirectional",
        "description": "SMBus serial-data input/output, open drain, that can be pulled up to 5.5V regardless of VCC and is open circuit when VCC = 0."
      },
      {
        "number": "15",
        "name": "PWM1",
        "type": "output",
        "description": "Open-drain output to the gate or base of the power transistor driving fan 1, which requires a pullup resistor that may go to up to 13.5V regardless of VCC."
      },
      {
        "number": "16",
        "name": "TACH1",
        "type": "input",
        "description": "Tachometer input from fan 1, which requires a pullup resistor that may go to up to 13.5V regardless of VCC."
      },
      {
        "number": "17",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 exposed pad has no numeric pin number in the datasheet. It is listed as EP and typed power_in be; The pin-description table lists the TQFN numbers 8 and 10 together with the names DXP1 and DXP2 in t; The SCL open-circuit condition in the extracted text is truncated (it ends at 'when VCC ='), so the ",
          "exposed pad 17 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0602,
        "at": "2026-10-30T22:42:06"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/MAX6639-MAX6639F.pdf",
        "pages": 22,
        "sha256": "bf52604981deae9c",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "max6639fate.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          0.92
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f5ba59630758c2469e3be92be71139c28e26fe8e03043ebd16a162c72c4ab685",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "max6639fate-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "4f3cb4e594efc22786968a00c042c3370a99c6cfaaf46410764c385e74dc8b09",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Maxim Integrated",
      "Package": "TQFN-16(5x5)",
      "Category": "Interface ICs",
      "Pins": "17"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "bf52604981deae9c7f1504d13d2da524c9c7e50ed769a651d311e7a6ac04b307",
      "rows": [
        {
          "name": "Operating Supply Voltage Range",
          "symbol": "VCC",
          "kind": "recommended_operating",
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          "typ": null,
          "max": 3.6,
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        },
        {
          "name": "Operating Temperature Range",
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          "unit": "°C",
          "min": -40,
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        {
          "name": "Standby Current",
          "symbol": "",
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          "unit": "µA",
          "min": null,
          "typ": 3,
          "max": 10,
          "conditions": "SMB static, sleep mode",
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        {
          "name": "Operating Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.5,
          "max": 1,
          "conditions": "Interface inactive, ADC active",
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        {
          "name": "External Temperature Error",
          "symbol": "",
          "kind": "tolerance",
          "unit": "°C",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "VCC = +3.3V, +60°C ≤ TA ≤ +100°C and +60°C ≤ TR ≤ +100°C",
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        {
          "name": "External Temperature Error",
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        {
          "name": "External Temperature Error",
          "symbol": "",
          "kind": "tolerance",
          "unit": "°C",
          "min": -3.8,
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          "max": 3.8,
          "conditions": "VCC = +3.3V, 0°C ≤ TR ≤ +145°C",
          "source_page": 2,
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        {
          "name": "Internal Temperature Error (MAX6639FAEE option, n = 1.021)",
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        {
          "name": "Internal Temperature Error (MAX6639FAEE option, n = 1.021)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "°C",
          "min": -10.4,
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          "max": -0.1,
          "conditions": "VCC = +3.3V, 0°C ≤ TA ≤ +125°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Supply Sensitivity of Temperature Measurement",
          "symbol": "",
          "kind": "tolerance",
          "unit": "°C/V",
          "min": -0.2,
          "typ": null,
          "max": 0.2,
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        {
          "name": "Conversion-Rate Timing Error",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "",
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        },
        {
          "name": "PWM Frequency Error",
          "symbol": "",
          "kind": "tolerance",
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        {
          "name": "Tachometer Accuracy",
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          "conditions": "TA = +60°C to +100°C",
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        {
          "name": "Remote-Diode Sourcing Current (High level)",
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        {
          "name": "Output Low Voltage (ALERT, FANFAIL, THERM, OT, SDA)",
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          "conditions": "ISINK = 6mA",
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        {
          "name": "Output Low Voltage (PWM1, PWM2)",
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          "conditions": "PWM1, PWM2, ISINK = 4mA",
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        {
          "name": "Output High Leakage Current (OT, ALERT, FANFAIL, THERM, SDA, PWM1, PWM2)",
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          "name": "Logic-Low Input Voltage (SDA, SCL, THERM, TACH1, TACH2)",
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          "name": "Logic-High Input Voltage (SDA, SCL, THERM, TACH1, TACH2)",
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          "kind": "electrical",
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          "typ": null,
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          "conditions": "VCC = 3.3V",
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          "name": "Input Leakage Current (SDA, SCL, THERM, TACH1, TACH2)",
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          "conditions": "VIN = VCC or GND",
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        {
          "name": "Serial Clock Frequency",
          "symbol": "fSCL",
          "kind": "timing",
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        {
          "name": "Clock Low Period",
          "symbol": "tLOW",
          "kind": "timing",
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          "min": 4,
          "typ": null,
          "max": null,
          "conditions": "10% to 10%",
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        {
          "name": "Clock High Period",
          "symbol": "tHIGH",
          "kind": "timing",
          "unit": "µs",
          "min": 4.7,
          "typ": null,
          "max": null,
          "conditions": "90% to 90%",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Bus Free Time Between STOP and START Conditions",
          "symbol": "tBUF",
          "kind": "timing",
          "unit": "µs",
          "min": 4.7,
          "typ": null,
          "max": null,
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          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "SMBus START Condition Setup Time",
          "symbol": "tSU:STA",
          "kind": "timing",
          "unit": "µs",
          "min": 4.7,
          "typ": null,
          "max": null,
          "conditions": "90% of SMBCLK to 90% of SMBDATA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "START Condition Hold Time",
          "symbol": "tHD:STO",
          "kind": "timing",
          "unit": "µs",
          "min": 4,
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          "max": null,
          "conditions": "10% of SDA to 10% of SCL",
          "source_page": 3,
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        {
          "name": "STOP Condition Setup Time",
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          "kind": "timing",
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        {
          "name": "Data Setup Time",
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        {
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          "conditions": "10% of SCL to 10% of SDA (Note 4)",
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        {
          "name": "SMBus Fall Time",
          "symbol": "tF",
          "kind": "timing",
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          "min": null,
          "typ": null,
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          "conditions": "",
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        {
          "name": "SMBus Rise Time",
          "symbol": "tR",
          "kind": "timing",
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          "min": null,
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          "max": 1000,
          "conditions": "",
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        },
        {
          "name": "SMBus Timeout",
          "symbol": "tTIMEOUT",
          "kind": "timing",
          "unit": "ms",
          "min": 58,
          "typ": 74,
          "max": 90,
          "conditions": "",
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        },
        {
          "name": "VCC to GND",
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          "unit": "V",
          "min": -0.3,
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          "conditions": "",
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        {
          "name": "PWM1, PWM2, TACH1, and TACH2 to GND",
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        {
          "name": "DXN to GND",
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        {
          "name": "SCL, SDA, THERM, OT, FANFAIL, ADD, and ALERT to GND",
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