Features and Benefits

  • Precision Voltage Monitoring, ±1.5% Reset Accuracy
  • 200ms Power-OK/Reset Time Delay
  • Active-low RESET Output (MAX808)
  • RESET and active-low RESET Outputs (MAX801)
  • Watchdog Timer (MAX801)
  • On-Board Gating of Chip-Enable Signals (MAX808):
    • Memory Write-Cycle Completion
    • 3ns CE Gate Propagation Delay
  • 1µA Standby Current
  • Power Switching:
    • 250mA in VCC Mode
    • 20mA in Battery-Backup Mode
  • MaxCap™/SuperCap™ Compatible
  • Active-low RESET Guaranteed Valid to VCC = 1V
  • Low-Line Threshold 52mV Above Reset Threshold

Product Details

The MAX801/MAX808 microprocessor (µP) supervisory circuits monitor and control the activities of +5V µPs by providing backup-battery switchover, low-line indication, and µP reset. Additional features include a watchdog for the MAX801 and CMOS RAM write protection for the MAX808.

The MAX801/MAX808 offer a choice of reset-threshold voltage (denoted by suffix letter): 4.675V (L), 4.575V (N), and 4.425V (M). These devices are available in 8-pin DIP and SO packages.


  • Computers: Desktop, Workstation, Server
  • Controllers
  • Critical µP Monitoring
  • Embedded Systems
  • Intelligent Instruments
  • Portable Battery-Powered Equipment

Product Categories

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Product Recommendations

MAX808 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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