MAX823L, MAX823M, MAX823R, MAX823S, MAX823T, MAX823Y, MAX823Z

5-Pin Microprocessor Supervisory Circuits with Watchdog Timer and Manual Reset

Industry's-First SOT Reset ICs with Watchdog and Manual Reset


Please check latest availability status for a specific part variant.

Description

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.
MAX823, MAX823L, MAX823M, MAX823R, MAX823S, MAX823T, MAX823Y, MAX823Z, MAX824, MAX824L, MAX824M, MAX824R, MAX824S, MAX824T, MAX824Y, MAX824Z, MAX825, MAX825L, MAX825M, MAX825R, MAX825S, MAX825T, MAX825Y, MAX825Z: Typical Operating Circuit MAX823, MAX823L, MAX823M, MAX823R, MAX823S, MAX823T, MAX823Y, MAX823Z, MAX824, MAX824L, MAX824M, MAX824R, MAX824S, MAX824T, MAX824Y, MAX824Z, MAX825, MAX825L, MAX825M, MAX825R, MAX825S, MAX825T, MAX825Y, MAX825Z: Typical Operating Circuit Enlarge+

Key Features

  • 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

Applications/Uses

  • Automotive Electronics
  • Computers and Controllers
  • Critical µP Monitoring
  • Embedded Controllers
  • Intelligent Instruments
  • Portable Battery-Powered Equipment
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesICC
(µA)
Package/PinsBudgetary
Price
minmaxSee Notes
MAX823 
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Push-Pull
85ms to 300msInput (WDI)1s to 2sManual Reset24
SC70/5
SOT23/5
$2.10 @1k
MAX824 
Active High
Active Low
Push-Pull
Input (WDI)1s to 2s-24
SC70/5
SOT23/5
$2.16 @1k
MAX825 
Active High
Active Low
Push-Pull
No Watchdog-Manual Reset12
SC70/5
SOT23/5
$2.08 @1k
See All Supervisors (1 Monitored Voltage) (261)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Quality and Environmental Data

Product Reliability Reports: MAX823R.pdf  MAX823Z.pdf  MAX823S.pdf  MAX823T.pdf 
Request Reliability Report for: MAX823L  MAX823M  MAX823Y 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • MAX823T IBIS Model
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

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