General Description
The MAX6369–MAX6374 are pin-selectable watchdog
timers that supervise microprocessor(µP)activity and
signal when a system is operating improperly.During
normal operation,the microprocessor should repeatedly
toggle the watchdog input (WDI) before the selected
watchdog timeout period elapses to demonstrate that
the system is processing code properly.If the µP does
not provide a valid watchdog input transition before the
timeout period expires, the supervisor asserts a watch-
dog (WDO) output to signal that the system is not exe-
cuting the desired instructions within the expected time
frame.The watchdog output pulse can be used to reset
the µP or interrupt the system to warn of processing
errors.
The MAX6369–MAX6374 are flexible watchdog timer
supervisors that can increase system reliability through
notification of code execution errors.The family offers
several pin-selectable watchdog timing options to
match a wide range of system timing applications:
Watchdog startup delay: provides an initial delay
before the watchdog timer is started.
Watchdog timeout period: normal operating watchdog
timeout period after the initial startup delay.
Watchdog output/timing options: open drain (100ms)
or push-pull (1ms).
The MAX6369–MAX6374 operate over a +2.5V to +5.5V
supply range and are available in miniature 8-pin
SOT23 packages.
Features
Precision Watchdog Timer for Critical
µP Applications
Pin-Selectable Watchdog Timeout Periods
Pin-Selectable Watchdog Startup Delay Periods
Ability to Change Watchdog Timing Characteristics
Without Power Cycling
Open-Drain or Push-Pull Pulsed Active-Low
Watchdog Output
Watchdog Timer Disable Feature
+2.5V to +5.5V Operating Voltage
8µA Low Supply Current
No External Components Required
Miniature 8-Pin SOT23 Package
Applications
Embedded Control Systems
Industrial Controllers
Critical µP and Microcontroller (µC) Monitoring
Automotive
Telecommunications
Networking
Pin Configuration
P/N Temp（0℃） Package
MAX6369KA-T -40℃ to +125℃ SOT23
MAX6369KA/V-T -40℃ to +125℃ SOT23
MAX6369KA/V+T -40℃ to +125℃ SOT23
MAX6370KA-T -40℃ to +125℃ SOT23
MAX6371KA-T -40℃ to +125℃ SOT23
MAX6372KA-T -40℃ to +125℃ SOT23
MAX6373KA-T -40℃ to +125℃ SOT23
MAX6374KA-T -40℃ to +125℃ SOT23
FROM: Company Name: Aunytor Electronic (HK) Co.,Ltd
Contact Person: Charlotte
Skype: Aunytor
whatsapp：+86 13537622113
Email: carrot@aunytorchips.com