Maxim Integrated MAX6314US25D1-T Microprocessor Reset Circuit

The MAX6314US25D1-T is a compact, highly reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides a significant layer of protection by ensuring that the µP and its peripherals are reset properly during power-up, power-down, and brown-out conditions. This specific model is tailored to maintain system integrity with a preset 2.50V threshold voltage, suitable for 2.5V-powered systems.

One of the key features of the MAX6314US25D1-T is its ability to assert a reset signal whenever the V<sub>CC supply voltage falls below the factory-set reset threshold. The reset output remains asserted for a minimum reset timeout period after V<sub>CC rises above the reset threshold, ensuring the system has adequate time to stabilize. This timeout period is typically 140ms, which provides a stable operating environment for processors and other ICs to initialize properly during power-up.

The device comes in a compact SOT-143 package, which is ideal for space-constrained applications. It operates over a wide temperature range of -40°C to +85°C, making it suitable for various industrial and consumer applications where temperature extremes are a concern. Additionally, the low supply current of 5µA (typical) makes this component an excellent choice for battery-powered equipment, as it helps to prolong battery life.

Another significant advantage of the MAX6314US25D1-T is its immunity to short V<sub>CC transients, which ensures reliable operation even in environments with unstable power supplies. The device also features an active-low RESET output, which is compatible with most microprocessors and can be directly connected without the need for external components.

In summary, the MAX6314US25D1-T from Maxim Integrated is a robust, easy-to-implement solution for system reliability and power monitoring. Its precision voltage monitoring capability, low power consumption, and compact packaging make it a versatile choice for designers looking to enhance system stability and performance in their digital applications.