Maxim Integrated MAX6809MEUR-T Microprocessor Reset Circuit

The MAX6809MEUR-T from Maxim Integrated is a compact, highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides a significant level of system reliability and accuracy required in critical applications, ensuring that the µP resets to a known state during power failures or whenever the supply voltage drops below a predetermined threshold.

This precision voltage-monitoring device is housed in a space-saving SOT-23 package, making it an excellent choice for space-constrained applications. It's tailored to maintain system integrity by monitoring the power supply voltage and asserting a reset if it detects an out-of-tolerance condition. The reset output remains asserted for a minimum timeout period after VCC has risen above the reset threshold level, providing a stable system reset.

Key Features of the MAX6809MEUR-T

• Precision Monitoring: The device features a factory-trimmed reset threshold suitable for monitoring 3V, 3.3V, and 5V power supplies.
• Low Power Consumption: With its low supply current of only 1.6µA, the MAX6809MEUR-T is ideal for battery-powered equipment.
• Reset Timeout: It offers a reset timeout period of 140ms (min), ensuring the system has ample time to stabilize after a power disturbance before resuming operation.
• Versatile Operating Conditions: The device can operate over a wide temperature range of -40°C to +125°C, accommodating diverse environmental conditions.
• Open-Drain Output: The reset output is an open-drain configuration, providing the flexibility to connect to different logic levels and to wire-OR multiple devices.

Applications for the MAX6809MEUR-T include portable/battery-powered devices, computers, controllers, intelligent instruments, critical µP and µC power monitoring. Its robust design ensures that your system's microprocessor is always operating under optimal power conditions, thus preserving data integrity and preventing system errors.

Overall, the MAX6809MEUR-T by Maxim Integrated is a trusted and efficient solution for system designers looking to enhance the reliability and performance of their microprocessor-based systems.