Part # MAX6369-MAX6374 datasheet

Part Manufacturer: Maxim

Maxim

Part Description: MAX6369 74 DS


Part Details:

19-1676; Rev 3; 11/05 Pin-Selectable Watchdog Timers MAX6369­MAX6374 General Description Features The MAX6369­MAX6374 are pin-selectable watchdog Precision Watchdog Timer for Critical timers that supervise microprocessor (µP) activity and µP Applications signal when a system is operating improperly. Duringnormal operation, the microprocessor should repeated- Pin-Selectable Watchdog Timeout Periods ly toggle the watchdog input (WDI) before the selected Pin-Selectable Watchdog Startup Delay Periods watchdog timeout period elapses to demonstrate thatthe system is processing code properly. If the µP does Ability to Change Watchdog Timing Characteristics not provide a valid watchdog input transition before the Without Power Cycling timeout period expires, the supervisor asserts a watch- Open-Drain or Push-Pull Pulsed Active-Low dog (WDO) output to signal that the system is not exe-cuting the desired instructions within the expected time Watchdog Output frame. The watchdog output pulse can be used to reset Watchdog Timer Disable Feature the µP or interrupt the system to warn of processing +2.5V to +5.5V Operating Voltage errors. The MAX6369­MAX6374 are flexible watchdog timer 8µA Low Supply Current supervisors that can increase system reliability through No External Components Required notification of code execution errors. The family offersseveral pin-selectable watchdog timing options to Miniature 8-Pin SOT23 Package match a wide range of system timing applications: · Watchdog startup delay: provides an initial delay Ordering Information before the watchdog timer is started. · Watchdog timeout period: normal operating watch- TEMP PIN- TOP dog timeout period after the initial startup delay. PART RANGE PACKAGE MARKS · Watchdog output/timing options: open drain (100ms) MAX6369KA-T -40°C to +85°C 8 SOT23-8 AADC or push-pull (1ms). MAX6370KA-T -40°C to +85°C 8 SOT23-8 AADD


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MAX6369-MAX6374.pdf Datasheet