Maxim Integrated MAX6381XR17D2+T Microprocessor Reset Circuit

The Maxim Integrated MAX6381XR17D2+T is a compact, high-precision microprocessor (μP) supervisory circuit designed to monitor power supplies in digital systems. It provides a robust solution for system reliability and ensures proper operation during power-up, power-down, and brown-out conditions. This device is ideal for use in a wide range of applications including portable/battery-powered equipment, computers, controllers, and intelligent instruments.

The MAX6381XR17D2+T operates by asserting a reset signal whenever the VCC supply voltage falls below its factory-set reset threshold of 1.7V. The reset output remains asserted for a minimum reset timeout period after VCC has risen above the reset threshold, ensuring the system has sufficient time to stabilize. The reset timeout period for this device is preset to 200ms (minimum), which helps prevent system errors during transient conditions.

This device is part of Maxim Integrated's family of nanoPower supervisory circuits, which are known for their ultra-low supply current, making them especially suitable for battery-operated applications. The MAX6381XR17D2+T consumes only 1.2μA of supply current, thereby extending the battery life of portable devices. Its small footprint comes in a SC70 package, which is highly advantageous for space-constrained applications.

Furthermore, the MAX6381XR17D2+T features an active-low, push-pull reset output. This type of output provides a strong low signal when active, which is compatible with most digital systems. This product is offered in a 3-pin SC70 package and is specified over the extended -40°C to +125°C temperature range. The combination of low power consumption, small size, and high temperature resilience makes the MAX6381XR17D2+T an excellent choice for reliable system monitoring in challenging environments.

Key features of the MAX6381XR17D2+T include:

• Factory-set reset threshold voltage: 1.7V
• Minimum 200ms reset timeout period
• Ultra-low 1.2μA supply current
• Active-low, push-pull reset output
• Operational temperature range: -40°C to +125°C
• SC70 packaging for space-saving installation

By integrating the MAX6381XR17D2+T into your system, you can achieve higher reliability and performance, particularly in applications where power conditions may be unpredictable or battery life is critical.