MAX698 Datasheet (Maxim) - Low Cost Power-On Reset and Watchdog Controllers

MAX698, Low Cost Power-On Reset and Watchdog Controllers

The MAX698/MAX699 monitor the +5V supply in microprocessor (μP) and digital systems.

They supply a RESET pulse of at least 140ms duration on power-up, power-down, and during low-voltage brownout conditions.

Circuit reliability is increased at reduced cost by eliminating all external components and a

MAX698 Features

* of the MAX698, but also provides a watchdog input to monitor microprocessor activity. The RESET output goes low if the watchdog input (WDI) is not toggled within 1 second. The watchdog feature can be disabled by leaving WDI open. Both parts are supplied in 8-lead PDIP and 16-lead 0.3in wide small ou