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Maxim > Products > [Temperature Sensors] 
MAX6685, MAX6686
Dual-Output Remote-Junction Temperature Switches


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 160kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
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   Applications/Uses
  		• 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

    		  
    		• CPU Temperature Protection
    		• Fan Control
    		• FPGA Temperature Protection
    		• Multichip Modules

    Key Specifications:  Temperature Switches
    Part Number Switch Type Functions Interface Accuracy
    (±°C)    		 Temp. Thresh.
    (°C)    		 Features Package/Pins Price
    See Notes
    MAX6685  Remote Dual Output Temperature Switch Logic 1
    T(High): +120°C or +125°C
    T(Low): +40°C to +115°C in 5°C increments
    Factory Set T(High) Outputs
    Pin Programmable T(Low) Outputs
    Push Pull Active High Output
    µMAX/8
    		 -
    MAX6686 
    Factory Set T(High) Outputs
    Open Drain Active Low Output
    Pin Programmable T(Low) Outputs
    µMAX/8
    		 $1.20 @1k
    See All Temperature Switches (25)

    Diagram
    MAX6685, MAX6686: Typical Operating Circuit
    Typical Operating Circuit

    Design Guides
  		• Thermal Management (PDF)

    Reliability Reports
  		• Show FIT data for:
  		• Request Reliability Report for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-27 of 27

    MAX6685 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6685AU40H    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6685AU40H-T    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6685AU40L    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6685AU75H    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6685AU75H-T    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6685AU75L    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6685AU75L+    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6686 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX6686UA75H    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6686UA75L    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6686AU40L    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6686AU40L+  
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6686AU40L+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6686AU40L-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6686UA75H+    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6686UA75L+  
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6686AU40H    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6686AU40H-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6686AU40H+    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6686AU40H+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX6686AU75H    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6686AU75H-T    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6686AU75L    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX6686AU75L-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX6686AU75H+    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6686AU75H+T    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6686AU75L+    
    		Active µMAX;8 pin;16.2 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX6686AU75L+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

    More Information
  		• Temperature Family by Product Type

    Related Products
    MAX6511, MAX6512, MAX6513 Low-Cost, Remote SOT Temperature Switches

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     Description 
     Key Features 
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    Document Ref.: 19-2459; Rev 2; 2003-04-26
    This page last modified: 2007-07-10


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