Maxim Integrated MAX809LEUK-T Microprocessor Reset Circuit

The MAX809LEUK-T is a compact, highly efficient microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides a crucial function by ensuring that the µP and its peripherals are reset properly during power-up, power-down, or brown-out conditions. The device is specifically tailored to maintain system integrity and prevent code execution errors by asserting a reset signal whenever the VCC supply voltage drops below a preset threshold.

Key Features

• Precision Monitoring: With a factory-trimmed reset threshold voltage, the MAX809LEUK-T offers precise monitoring of the power supply to ensure reliable operation of the digital system it is tasked with protecting.
• Low Power Consumption: Designed for power-sensitive applications, this supervisory circuit consumes minimal power, which is a significant advantage for battery-operated devices.
• Manual Reset Input: An additional feature is the manual reset input, which allows for an external trigger to initiate a system reset, providing flexibility and control for system maintenance and troubleshooting.
• Reset Timeout: After the power supply returns to an acceptable level, the MAX809LEUK-T maintains the reset output in the active state for a period of time to ensure the system has stabilized, which is adjustable using external components.
• Compact SOT-23 Package: The device comes in a small SOT-23 package, making it ideal for space-constrained applications without compromising on performance.

Applications

The MAX809LEUK-T is suitable for a wide range of applications where reliable system reset functionality is critical. This includes:

• Computers and Controllers
• Embedded Systems
• Portable/Battery-Powered Equipment
• Intelligent Instruments
• Automotive Systems

With its precision voltage monitoring and low power consumption, the MAX809LEUK-T from Maxim Integrated is an essential component for safeguarding system integrity across various electronic devices and systems. Its compact footprint and robust feature set make it a versatile and reliable choice for designers looking to enhance the reliability and performance of their digital systems.