Maxim Integrated MAX6337US20D3-T Microprocessor Supervisory Circuit

The MAX6337US20D3-T is a high-quality microprocessor (µP) supervisory circuit designed by Maxim Integrated, a renowned leader in the development of integrated circuits. This device is engineered to monitor power supplies in µP and digital systems, providing excellent circuit reliability and low cost by eliminating the need for external components and adjustments when used in most applications.

The MAX6337US20D3-T offers a precise factory-set voltage threshold of 2.0V, which is ideal for supervising 2.5V-powered circuits. It provides a vital function in these systems by asserting a reset signal whenever the VCC supply voltage falls below the specified threshold. The reset signal remains asserted for a minimum of 140ms after VCC rises above the reset threshold, ensuring the system has adequate time to stabilize before the processor starts or resumes operation.

This supervisory circuit comes in a compact, space-saving SOT-143 package, making it suitable for use in systems where board space is at a premium. The MAX6337US20D3-T operates over a wide temperature range of -40°C to +85°C, ensuring reliable performance in diverse operating environments.

Key features of the MAX6337US20D3-T include:

• Factory-set reset threshold voltage: 2.0V
• Minimum reset timeout period: 140ms
• Low supply current: Ideal for battery-operated equipment
• Guaranteed reset valid to VCC = 1V
• Wide operating temperature range: -40°C to +85°C
• Compact SOT-143 package

Applications for this supervisory IC are vast and include portable/battery-powered equipment, computers, controllers, intelligent instruments, critical µP and µC power monitoring, and other digital systems that require a reliable reset function.

The MAX6337US20D3-T provides a simple and efficient solution for system designers looking to enhance the reliability of their digital systems without incurring significant power or space penalties. Its integration into a design ensures that the microprocessor is properly reset, preventing code execution errors due to insufficiently initialized hardware during power-up, power-down, or brown-out conditions.