General 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.

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 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

    Computers and Controllers

    Embedded Controllers

    Intelligent Instruments

    Automotive Systems

    Critical µP Monitoring

    Portable/Battery-Powered Equipment