Maxim Integrated MAX6314US28D3 Microprocessor Reset Circuit

The MAX6314US28D3 is a high-quality microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in µP and digital systems. It provides a significant level of system reliability and accuracy required in critical applications by ensuring that the µP resets to a known state during power-up, power-down, or brown-out conditions.

This compact, highly integrated device is optimized for battery-powered equipment due to its low power consumption. The MAX6314 series features a preset voltage threshold of 2.8V, making it suitable for 3V-powered systems. The reset output is active-low and is guaranteed to remain in the logic-low state for a minimum of 140ms after VCC has risen above the reset voltage threshold. This feature ensures that the system has sufficient time to stabilize before the processor starts operating.

Key features of the MAX6314US28D3 include:

• Precision factory-set V<sub>CC reset thresholds suitable for lower voltage applications.
• Low 1.2µA supply current makes it an excellent choice for portable, battery-operated devices.
• Guaranteed reset valid to V<sub>CC = 1V, which assures proper system reset on power-down or brown-out conditions.
• The active-low, push-pull RESET output provides a direct interface to µP reset control lines without requiring external components.
• Immunity to short V<sub>CC transients ensures reliable system operation.
• Available in a compact SOT-143 package, the device saves board space and is ideal for space-constrained applications.

The MAX6314US28D3 is a versatile component, suitable for use in a variety of applications such as computers, controllers, intelligent instruments, critical µP and µC power monitoring, and portable/battery-powered equipment. Its robust design and precision voltage monitoring capabilities make it a crucial component for enhancing system dependability and preventing data corruption during power instability.

With Maxim Integrated's reputation for quality and reliability, the MAX6314US28D3 is an excellent choice for designers looking to incorporate a reliable reset circuit into their digital systems, ensuring optimal performance and stability.