Features and Benefits

  • Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power Supplies
  • Operating Current:
    • 6µA (MAX823L/M) (SC70)
    • 2µA (MAX825T/S/R/Z/Y) (SC70)
  • Fully Specified Over Temperature
  • 140ms min Power-On Reset
  • Guaranteed active-low RESET Valid to VCC = 1V
  • Power-Supply Transient Immunity
  • Watchdog Timer with 1.6s Timeout (MAX823/MAX824)
  • Manual Reset Input (MAX823/MAX825)
  • No External Components

Product Details

The MAX823/MAX824/MAX825 microprocessor (µP) supervisory circuits combine reset output, watchdog, and manual reset input functions in 5-pin SOT23 and SC70 packages. They significantly improve system reliability and accuracy compared to separate ICs or discrete components. The MAX823/MAX824/MAX825 are specifically designed to ignore fast transients on VCC.

Seven preprogrammed reset threshold voltages are available (see Reset Threshold Table in the full data sheet). All three devices have an active-low reset output, which is guaranteed to be in the correct state for VCC down to 1V. The MAX823 also offers a watchdog input and manual reset input. The MAX824 offers a watchdog input and a complementary active-high reset. The MAX825 offers a manual reset input and a complementary active-high reset. The Selector Guide explains the functions offered in this series of parts.


  • Automotive Electronics
  • Computers and Controllers
  • Critical µP Monitoring
  • Embedded Controllers
  • Intelligent Instruments
  • Portable Battery-Powered Equipment

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.

Tools & Simulations

IBIS Models

Product Recommendations

MAX823 Companion 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

Sample & Buy

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Buy Now Pricing

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List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



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