Maxim Integrated MAX6314US28D3+T Microprocessor Reset Circuit

The MAX6314US28D3+T is a compact, highly-reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in µP and digital systems. It provides a significant level of protection for your electronic devices by ensuring a proper system reset during power-up, power-down, or brown-out conditions.

This supervisory circuit comes in a small 4-pin SOT-143 package, making it ideal for space-constrained applications. The MAX6314US28D3+T is designed to maintain system integrity by automatically resetting the µP during periods of erratic or unsafe power supply voltages. It offers a factory-trimmed reset threshold voltage of 2.8V, which is suitable for 3V-powered circuits.

One of the key features of the MAX6314US28D3+T is its integrated manual reset input, which allows for a straightforward external triggering of a system reset. This manual reset can be actuated by a pushbutton or other user interface components, providing an additional layer of control for system operators.

The device boasts a low supply current, typically 1µA, making it an energy-efficient choice for battery-powered applications. Additionally, it has a guaranteed reset valid to V_CC = 1V, which ensures that the system reset signal remains valid even during low voltage conditions, thus preventing system malfunctions.

Another important aspect of the MAX6314US28D3+T is its active-low, open-drain reset output, which remains asserted for a minimum of 140ms after V_CC has risen above the reset threshold level. This delay provides ample time for the system to stabilize before the µP begins operation, thereby enhancing system reliability.

Overall, the Maxim Integrated MAX6314US28D3+T is an essential component for managing power supply variations and ensuring the proper functioning of µP systems. Its small size, low power consumption, and robust reset features make it a smart choice for designers looking to enhance the operational stability of their digital systems.