Maxim Integrated MAX6414UK24-T Microprocessor Reset Circuit

The MAX6414UK24-T is a high-quality microprocessor (μP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides a significant level of system reliability and accuracy required in critical electronic applications. This compact device ensures that the microprocessor is reset to a known state during power-up, power-down, or brown-out conditions.

Operating with a nominal supply voltage of 2.4V, the MAX6414UK24-T is specifically engineered for portable and battery-powered equipment. Its low supply current of 1.5μA makes it an ideal choice for systems where power efficiency is paramount. This device comes in a small, surface-mount SOT23 package, making it suitable for space-constrained applications.

The MAX6414UK24-T features an active-low, push-pull reset output, which remains asserted for a minimum reset timeout period of 140ms after VCC has risen above the reset threshold level. This ensures that the system has sufficient time to stabilize before the processor starts operating. The reset threshold accuracy is ±1.5% at room temperature, which provides a reliable reset operation without false triggering.

Another significant feature of the MAX6414UK24-T is its ability to reject fast transient glitches on the VCC line, thanks to its built-in debounce circuit. This ensures that the device is not unnecessarily reset due to short duration noise pulses, which is critical for maintaining system stability.

The integrated circuit also offers a manual reset input that allows for a system reset to be initiated by an external signal, giving additional control to the user or system designer. This manual reset feature can be used to trigger a reset from a user interface or other external events.

With its robust feature set and Maxim Integrated's reputation for quality, the MAX6414UK24-T is a reliable and efficient solution for managing system resets and ensuring the proper operation of microprocessor-based systems. Its precision and low power consumption make it an excellent choice for a wide range of applications, including portable devices, computers, controllers, and intelligent instruments.