MAX6686:Dual-Output Remote-Junction Temperature Switches

MAX6685/MAX6686 are dual-output temperature switches that use an external diode-connected transistor as a sensing element. These devices have two logic outputs (THIGH and TLOW). THIGH asserts a logic signal when the remote temperature crosses the factory-programmed, +120°C, or +125°C upper trip threshold. TLOW is asserted when the remote temperature exceeds the lower threshold, which is controlled by pins S1 and S2. The lower thresholds are available in two ranges in 5°C increments. The two ranges are +40°C to +80°C and +75°C to +115°C. Hysteresis for both outputs to be deasserted is typically 5°C. THIGH is an open-drain, active-low output for both the MAX6685 and the MAX6686. TLOW is a CMOS push-pull, active-high output for the MAX6685 and is an open-drain, active-low output for the MAX6686. They are available in a space-saving 8-pin µMAX package.

Key Features
  • Pin-Programmed Lower Temperature Threshold from +40°C to +80°C or +75°C to +115°C (5°C Increments)
  • Preset Upper Threshold: +120°C or +125°C
  • Open-Drain, Active-Low Output for Upper Temperature Alarm
  • CMOS Push-Pull, Active-High or Open-Drain, Active-Low Output for Lower Temperature Alarm
  • 1.5°C Accuracy
  • 3.0V to 5.5V, 200µA Supply
  • 8-Pin µMAX Package
MAX6685, MAX6686: Typical Operating Circuit
MAX6685, MAX6686: Typical Operating Circuit
Applications/Uses
  • CPU Temperature Protection
  • Fan Control
  • FPGA Temperature Protection
  • Multichip Modules
DataSheet
titleDownload file
MAX6685-MAX6686 Data SheetMAX6685-MAX6686.pdf
Parametrics
Part NumberSwitch TypeFunctionsInterfaceAccuracy
(±°C)
Temp. Thresh.
(°C)
Package/PinsBudgetary
Price
See Notes
MAX6685RemoteDual Output Temperature SwitchLogic1T(High): +120°C or +125°C
T(Low): +40°C to +115°C in 5°C increments
µMAX/8$1.37 @1k
MAX6686µMAX/8
Quality and Environmental Data
Related Products
  • MAX6512:No Longer Available
  • MAX6511:No Longer Available
  • MAX6513:Low-Cost, Remote SOT Temperature Switch
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6686AU40HNo Longer AvailableMAX6686AU40H+µMAX,;8 pin;15.6 mm²-40°C to +125°CNo
MAX6686AU40H+ActiveµMAX,;8 pin;15.6 mm²-40°C to +125°CLead Free
MAX6686AU40H+TActiveuMAX;8 pin-40°C to +125°CSee data sheet
MAX6686AU40H-TNo Longer AvailableMAX6686AU40H+TuMAX;8 pin-40°C to +125°CSee data sheet
MAX6686AU40LNo Longer AvailableMAX6686AU40L+µMAX,;8 pin;15.6 mm²-40°C to +125°CNo
MAX6686AU40L+ActiveµMAX,;8 pin;15.6 mm²-40°C to +125°CLead Free
MAX6686AU40L+TActiveµMAX,;8 pin;15.6 mm²-40°C to +125°CLead Free
MAX6686AU40L-TNo Longer AvailableMAX6686AU40L+TuMAX;-40°C to +125°CSee data sheet
MAX6686AU75HNo Longer AvailableMAX6686AU75H+µMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX6686AU75H+ActiveµMAX,;8 pin;15.6 mm²Special - See Data SheetLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6686AU75H+TActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX6686AU75H-TNo Longer AvailableMAX6686AU75H+TµMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX6686AU75LNo Longer AvailableMAX6686AU75L+µMAX,;8 pin;15.6 mm²-40°C to +85°CNo
MAX6686AU75L+ActiveµMAX,;8 pin;15.6 mm²Special - See Data SheetLead Free
MAX6686AU75L+TActiveµMAX,;8 pin;15.6 mm²-40°C to +85°CLead Free
MAX6686AU75L-TNo Longer AvailableMAX6686AU75L+TuMAX;8 pin-40°C to +85°CSee data sheet
MAX6686UA75HNo Longer Available-40°C to +125°CSee data sheet
MAX6686UA75H+No Longer AvailableuMAX;-40°C to +125°CSee data sheet
MAX6686UA75LNo Longer Available-40°C to +125°CSee data sheet
MAX6686UA75L+No Longer AvailableMAX6686AU75L+µMAX,;8 pin;15.6 mm²-40°C to +125°CLead Free
MAX6685-MAX6686.pdf MAX6685
MAX6685-MAX6686.pdf MAX6685
MAX6685-MAX6686.pdf MAX6685
MAX6686.pdf MAX6686