Maxim Integrated's MAX6314US31D1+T Microprocessor Reset Circuit

The MAX6314US31D1+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 level of system integrity by ensuring that the µP resets cleanly during power-up, power-down, and brown-out conditions.

This device comes in a compact 4-pin SOT-143 package, making it suitable for space-constrained applications. The MAX6314US31D1+T is designed to maintain system stability by asserting a reset signal whenever the V<sub>CC supply voltage falls below its preset threshold of 3.1V. The reset output remains asserted for a minimum of 140ms after V<sub>CC has risen above the reset threshold, ensuring that the system has sufficient time to stabilize.

The MAX6314 series features an array of factory-set V<sub>CC reset threshold voltages, but the specific model MAX6314US31D1+T is programmed for a threshold of 3.1 volts. The 'US' suffix indicates that this component has an active-high, standard reset output, while the 'D1' suffix signifies that the reset timeout period is 140ms (min). The '+T' suffix denotes that the component is provided in tape and reel packaging, which is ideal for automated manufacturing processes.

Key features of the MAX6314US31D1+T include:

• Low power consumption, suitable for battery-operated applications
• Guaranteed reset valid to V<sub>CC = 1V
• No external components required
• Immune to short V<sub>CC transients
• Pin-compatible with the Dallas/Maxim DS1233 series

Applications for this reset circuit are diverse, ranging from computers and controllers to portable/battery-powered equipment and intelligent instruments. The MAX6314US31D1+T is a testament to Maxim Integrated's commitment to providing robust and compact solutions for power management challenges across various electronic systems.

With its precision monitoring and easy integration, the MAX6314US31D1+T is an essential component for ensuring the reliability and proper functioning of microprocessor-based systems.