Maxim Integrated MAX6343TUT-T Microprocessor Reset Circuit

The Maxim Integrated MAX6343TUT-T is a highly reliable microprocessor (μP) supervisory circuit designed to maintain system integrity during power failures or unexpected events. This compact device is particularly suitable for portable and space-constrained applications, offering a robust solution for managing system resets and ensuring proper operation of microprocessor-based systems.

Constructed with the needs of advanced electronic systems in mind, the MAX6343TUT-T provides a precise monitoring solution for power supplies. It ensures that the μP and other critical system components are reset to a known state during power-up, power-down, or brownout conditions. The device features a factory-trimmed reset threshold voltage, which guarantees accurate monitoring of the VCC supply voltage.

One of the outstanding features of this supervisory circuit is its ability to generate a reset signal for a minimum of 140ms (typical) whenever the monitored voltage drops below the preset threshold. This ensures sufficient time for the system to recover and return to a stable operating condition after a power disturbance. The reset output is available in both active-low and active-high configurations, making the MAX6343TUT-T versatile for different system requirements.

The MAX6343TUT-T operates over a wide voltage range, from 1.2V to 5.5V, and consumes a low quiescent current, which is ideal for battery-powered devices. Its small 6-pin SOT23 package allows for easy integration into space-constrained PCB layouts, providing a minimal footprint while delivering maximum functionality.

Key features of the MAX6343TUT-T include:

• Factory-trimmed VCC reset threshold for high accuracy
• Low, 1.5µA supply current, suitable for battery-operated devices
• Guaranteed reset valid to VCC = 1.2V
• Immune to short VCC transients
• 140ms (min.) reset pulse width
• Available in a small 6-pin SOT23 package

In conclusion, the Maxim Integrated MAX6343TUT-T is a dependable and efficient choice for designers looking to enhance the reliability and performance of their microprocessor-based systems. Its precise voltage monitoring and reset capabilities, combined with its low power consumption and compact form factor, make it an invaluable component for maintaining system stability across a variety of applications.