Maxim Integrated MAX6383XR17D3 Microprocessor Reset Circuit

The Maxim Integrated MAX6383XR17D3 is a compact, high-precision microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It provides a robust solution to ensure that microprocessors and other sensitive digital circuits operate reliably by resetting these systems during power-up, power-down, or brown-out conditions. The device is ideal for portable, battery-operated, and space-constrained applications due to its small form factor.

This supervisory circuit features a factory-trimmed reset threshold voltage of 1.7V, which makes it suitable for low-voltage operations. The MAX6383XR17D3 asserts a reset signal whenever the V_CC supply voltage falls below the preset threshold, keeping the reset active for a minimum timeout period after V_CC rises above the reset threshold. This ensures that the system has adequate time to stabilize before the processor begins operation.

The device comes in a tiny, 3-pin SC70 package, which is highly favored in applications where space is at a premium. Despite its small size, it offers excellent thermal performance and reliability. The MAX6383XR17D3 operates over a wide temperature range of -40°C to +125°C, making it suitable for industrial applications that may be subjected to extreme conditions.

Key features of the MAX6383XR17D3 include:

• Factory-trimmed V_CC reset threshold voltage of 1.7V
• Low supply current of 1.1µA, which is ideal for battery-powered devices
• Guaranteed reset valid to V_CC = 1V, ensuring reliable operation during low voltage conditions
• 140ms (min) reset timeout period, providing ample time for system recovery
• Immunity to short V_CC transients, enhancing system stability

With its precision voltage monitoring and low power consumption, the MAX6383XR17D3 is an excellent choice for managing system resets in microcontrollers, computers, controllers, intelligent instruments, and portable consumer electronics. By integrating this device into your design, you can enhance the reliability and performance of your digital systems, ensuring they operate as intended even under adverse power conditions.

For more information or to integrate the MAX6383XR17D3 into your system, visit Maxim Integrated's official website or contact their support team for technical assistance.