Maxim Integrated MAX6864UK16D3S+T Microprocessor Reset Circuit

The MAX6864UK16D3S+T is a robust microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with a 1.6V supply voltage. This highly integrated device is ideal for portable and battery-powered equipment due to its small size and high level of integration.

This supervisory circuit is specifically engineered to maintain system integrity by monitoring the power supply voltage. Upon detecting an out-of-tolerance condition, the MAX6864UK16D3S+T asserts a reset signal to reset the system reliably and keep it in the reset state as long as the supply voltage remains below a preset threshold. Once the voltage exceeds the acceptable range, the reset signal is kept active for a minimum timeout period to ensure the system's microprocessor starts up properly into a stable operating condition.

Key features of the MAX6864UK16D3S+T include:

• Factory-Set Reset Threshold: The reset threshold is preset at 1.6V, which is suitable for various applications, allowing for straightforward integration without the need for external adjustments.
• Low Power Consumption: With its low quiescent current, this device is optimized for battery-powered applications, ensuring minimal power drain during operation.
• Manual Reset Input: A manual reset input is provided, allowing for a system reset to be initiated with an external pushbutton or logic signal.
• Immune to Short Vcc Transients: The MAX6864UK16D3S+T is designed to ignore short transients on the Vcc line, which prevents false resets from occurring due to brief voltage dips.
• Compact SOT23 Packaging: The device comes in a small SOT23-5 package, making it suitable for space-constrained applications.

The MAX6864UK16D3S+T is a versatile and reliable solution for system monitoring, providing the necessary features to ensure a stable and orderly operation of microprocessor-based systems. With its precision monitoring and compact form factor, it is an excellent choice for designers seeking to enhance system reliability with minimal design effort.