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MAX6730

Maxim
Part Number MAX6730
Manufacturer Maxim
Description Single-/Dual-/Triple-Voltage uP Supervisory Circuits
Published May 2, 2005
Detailed Description 19-2629; Rev 2; 1/03 Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output General Desc...
Datasheet PDF File MAX6730 PDF File

MAX6730
MAX6730

Overview
19-2629; Rev 2; 1/03 Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output General Description The MAX6730–MAX6735 single-/dual-/triple-voltage microprocessor (µP) supervisors feature a watchdog timer and manual reset capability.
The MAX6730– MAX6735 offer factory-set reset thresholds for monitoring voltages from +0.
9V to +5V and an adjustable reset input for monitoring voltages down to +0.
63V.
The combination of these features significantly improves system reliability and accuracy when compared to separate ICs or discrete components.
The active-low reset output asserts and remains asserted for the reset timeout period after all the monitored voltages exceed their respective thresholds.
Multiple factoryset reset threshold combinations reduce the number of external components required.
The MAX6730/MAX6731 monitor a single fixed voltage, the MAX6732/MAX6733 monitor two fixed voltages, and the MAX6734/MAX6735 monitor two fixed voltages and one adjustable voltage.
All devices are offered with six minimum reset timeout periods ranging from 1.
1ms to 1120ms.
The MAX6730–MAX6735 feature a watchdog timer with an independent watchdog output.
The watchdog timer prevents system lockup during code execution errors.
A watchdog startup delay of 54s after reset asserts allows system initialization during power-up.
The watchdog operates in normal mode with a 1.
68s delay after initialization.
The MAX6730/MAX6732/MAX6734 provide an active-low, open-drain watchdog output.
The MAX6731/MAX6733/MAX6735 provide an active-low, push-pull watchdog output.
Other features include a manual reset input (MAX6730/ MAX6731/MAX6734/MAX6735) and push-pull reset output (MAX6731/MAX6733/MAX6735) or open-drain reset output (MAX6730/MAX6732/MAX6734).
The MAX6730– MAX6733 are offered in a tiny SOT23-6 package.
The MAX6734/MAX6735 are offered in a space-saving SOT23-8 package.
All devices are fully specified over the extended temperature range (-40°C to +85°C).
Features o V...


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