Maxim Integrated MAX6314US28D4-T Microprocessor Reset Circuit

The MAX6314US28D4-T is a highly reliable, low-power microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in µP and digital systems. It provides a significant line of defense against system failures caused by fluctuations and failures in the power supply. The device is particularly suitable for battery-powered equipment due to its low power consumption and small footprint.

This supervisory circuit ensures that the µP starts up in a known state. It features an active-low, push-pull reset output, which remains asserted for a minimum reset timeout period of 140ms after V<sub>CC has risen above the reset threshold level. This gives the system enough time to stabilize before the processor starts operating.

The MAX6314US28D4-T operates with a nominal reset threshold voltage of 2.8V, making it ideal for 3V-powered systems. Its precision voltage monitoring capability helps prevent erroneous operation during power-up, power-down, and brown-out conditions. The device comes in a compact 4-pin SOT-143 package, which is highly beneficial for space-constrained applications.

Key features of the MAX6314US28D4-T include:

• Low power consumption, which enhances the battery life of portable devices.
• Guaranteed reset valid down to V<sub>CC = 1V, ensuring reliable operation under low voltage conditions.
• No external components are required, which simplifies design and reduces system cost.
• Immune to short V<sub>CC transients, providing robust performance in noisy environments.

This component is commonly used in applications such as computers, controllers, intelligent instruments, portable/battery-powered equipment, and embedded systems. The MAX6314US28D4-T is available in tape and reel packaging, denoted by the "-T" at the end of the product number, facilitating automated manufacturing processes.

Maxim Integrated's commitment to quality ensures that the MAX6314US28D4-T meets the stringent requirements of a wide array of critical systems, delivering both reliability and peace of mind for designers and engineers.