ENGLISH • 简体中文 • 日本語 • 한국어  

    Login | Register 


   
 
Enter keywords or part number    


What's New Products Solutions Design AppNotes Support Sales About Us Members

Maxim > Products > [Supervisors, Voltage Monitors, Sequencers]  [Military/Aerospace] 
MAX696, MAX697
Microprocessor Supervisory Circuits

Industry-Standard, Full-Function uP Supervisor


  QuickView     Technical Documents     Ordering Info     More Information     User Comments (0)     All  
Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 640kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX696/MAX697 supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery-control functions in microprocessor (µP) systems. These include µP reset and backup-battery switchover, watchdog timer, CMOS RAM write protection, and power-failure warning. The MAX696/MAX697 significantly improve system reliability and accuracy compared to that obtained with separate ICs or discrete components.

The MAX696 and MAX697 are supplied in 16-pin packages and perform six functions:
1) A reset output during power-up, power-down, and brownout conditions. The threshold for this "lowline" reset is adjustable by an external voltage-divider.
2) A reset pulse if the optional watchdog timer has not been toggled within a specified time.
3) Individual outputs for low-line and watchdog fault conditions.
4) The reset time may be left at its default value of 50ms, or may be varied with an external capacitor or clock pulses.
5) A separate 1.3V threshold detector for power-fail warning, low-battery detection, or to monitor a power supply other than VCC.

The MAX696 also has battery-backup switching for CMOS RAM, CMOS microprocessor, or other low-power logic.

The MAX697 lacks battery-backup switching, but has write-protection pins (CE-bar IN and CE-bar OUT) for CMOS RAM or EPROM. In addition, it consumes less than 250 microamperes.

Key Features   Applications/Uses
  • Adjustable Low-Line Monitor and Power-Down Reset
  • Power-OK/Reset Time Delay
  • Watchdog Timer—100ms, 1.6s, or Adjustable
  • Minimum Component Count
  • 1µA Standby Current
  • Battery-Backup Power Switching (MAX696)
  • On-Board Gating of Chip-Enable Signals (MAX697)
  • Separate Monitor for Power-Fail or Low-Battery Warning
  • Underwriters Laboratories (UL®) Recognized

  
  		• Automotive Systems
  		• Computers
  		• Controllers
  		• Critical µP Power Monitoring
  		• Intelligent Instruments

    Key Specifications:  Battery Backup Circuits
    Part Number Reset Thresh.
    (V)    		 Reset Out Reset Out ICC
    (µA)    		 Features Industry Qualified Package/Pins Smallest Available Pckg.
    (mm2)    		 Oper. Temp.
    (°C)    		 Price
    Active Low Active High max max w/pins See Notes
    MAX696  1.2 to 1.8 Push-Pull Push-Pull 4000
    Adjustable Reset Input
    Battery On
    Low Line
    Power Fail Comparator
    Watchdog
    		 MIL-STD-883B
    CDIP(N)/16
    LCC/20
    PDIP(N)/16
    SOIC(W)/16
    		 83
    -55 to +125
    -40 to +85
    0 to +70
    		 $3.55 @1k
    See All Battery Backup Circuits (86)

    Key Specifications:  Supervisors (1 Monitored Voltage)
    Part Number Reset Thresh.
    (V)    		 Reset Out Reset Out tRESET Watchdog Feature Watchdog Timeout Supervisor Features Reset Thresh. Accur.
    (%)    		 ICC
    (µA)    		 Price
    Active Low Active High min @ +25°C max See Notes
    MAX697 
    1.2 to 1.8
    1.8 to 2.5
    2.5 to 3.3
    3.3 to 5.5
    		 Push-Pull Push-Pull
    1ms to 15ms
    15ms to 85ms
    85ms to 300ms
    300ms to 1s
    <1ms
    >1s
    Adjustable
    Input (WDI)
    Input/Output (WDI/WDO)
    1s to 2s
    <1s
    >2s
    Adjustable
    Adjustable Reset Input
    Power Fail Comparator/Low Battery Detect
    		 2.5 300 $3.58 @1k
    See All Supervisors (1 Monitored Voltage) (274)

    Diagram
    MAX696, MAX697: Block Diagram
    Block Diagram

    Design Guides
  		• Microprocessor Supervisory (PDF)

    Reliability Reports
  		• Reliability Report: MAX697.pdf
  		• Show FIT data for:
  		• Request Reliability Report for:
  		• Underwriters Laboratories (UL®) Recognized

    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: 1-35 of 35

    MAX696 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX696EJE    
    		Active CDIP(N);16 pin;173 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J16-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX696MJE    
    		Active CDIP(N);16 pin;173 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J16-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX696MJE/883B    
    		Active CDIP(N);16 pin;173 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J16-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX696C/D    
    		Active DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX696MLP/883B    
    		Active LCC;20 pin;83 mm²
    Outline Drawing: 21-0658 (PDF)
    Land Pattern: 90-0177 (PDF)
    Use pkgcode/variation: L20-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX696CPE  
    		Active PDIP(N);16 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P16-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX696CPE+  
    		Active PDIP(N);16 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P16+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX696EPE  
    		Active PDIP(N);16 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P16-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX696EPE+  
    		Active PDIP(N);16 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P16+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX696EWE+T    
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX696EWE+  
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX696CWE  
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX696CWE-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX696CWE+  
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX696CWE+T    
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX696EWE  
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX696EWE-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX697 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX697EJE    
    		Active CDIP(N);16 pin;173 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J16-3*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX697MJE    
    		Active CDIP(N);16 pin;173 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J16-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX697MJE/883B    
    		Active CDIP(N);16 pin;173 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J16-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX697MJE/HR    
    		Active CDIP(N);16 pin;173 mm²
    Outline Drawing: 21-0045 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: J16-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX697C/D    
    		Active DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX697MLP/883B    
    		Active LCC;20 pin;83 mm²
    Outline Drawing: 21-0658 (PDF)
    Land Pattern: 90-0177 (PDF)
    Use pkgcode/variation: L20-3*
    		-55°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX697CPE  
    		Active PDIP(N);16 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P16-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX697CPE+  
    		Active PDIP(N);16 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P16+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX697EPE  
    		Active PDIP(N);16 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P16-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX697EPE+  
    		Active PDIP(N);16 pin;158 mm²
    Outline Drawing: 21-0043 (PDF)
    Land Pattern: Not Applicable
    Use pkgcode/variation: P16+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX697EWE+  
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX697EWE+T    
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX697CWE    
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16-1*
    		0°C to +70°C RoHS/Lead-Free: No
    Materials Analysis
    MAX697CWE-T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX697CWE+  
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16+1*
    		0°C to +70°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX697CWE+T    
    		Active

    Land Pattern: Not Available

    		0°C to +70°C See data sheet
    MAX697EWE  
    		Active SOIC(W);16 pin;112 mm²
    Outline Drawing: 21-0042 (PDF)
    Land Pattern: 90-0107 (PDF)
    Use pkgcode/variation: W16-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX697EWE-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

    Notes and Comments
  		• Adjustable low-line monitor and power-down reset

    Related Products
    MAX807L, MAX807M, MAX807N Full-Featured µP Supervisory Circuit with ±1.5% Reset Accuracy
    MAX817, MAX817L, MAX817M, MAX818, MAX818L, MAX818M, MAX819, MAX819L, MAX819M +5V Microprocessor Supervisory Circuits
    MAX6361, MAX6361H, MAX6361L, MAX6361P, MAX6362, MAX6362H, MAX6362L, MAX6362P, MAX6363, MAX6363H, MAX6363L, MAX6363P, MAX6364, MAX6364H, MAX6364L, MAX6364P SOT23, Low-Power Microprocessor Supervisory Circuits with Battery Backup

    More Like This: View Product Families for Similar Products

    Didn't Find What You Need?
  • Next Day Product Selection Assistance from Applications Engineers
  • Parametric Search
  • Applications Help

    •  QuickView   Technical Documents   Ordering Info   More Information  
     Description 
     Key Features 
     Applications/Uses 
     Key Specifications 
     Diagram 

    		 Data Sheet 
     Application Notes 
     Design Guides 
     Engineering Journals 
     Reliability Reports 
     Software/Models 
     Evaluation Kits 

    		 Price and Availability 
     Samples 
     Buy Online 
     Package Information 
     Lead-Free Information 

    		 Related Products 
     Notes and Comments 
     Evaluation Kits 

    Document Ref.: 19-0829; Rev 3; 2006-06-12
    This page last modified: 2009-11-09


            •         •         •     Privacy Policy     •     Legal Notices

        Copyright © 2009 by Maxim Integrated Products