Maxim Integrated MAX6866UK16D3S+T Microprocessor Voltage Monitors

The Maxim Integrated MAX6866UK16D3S+T is a highly reliable and precise microprocessor (μP) supervisory circuit designed to monitor power supplies in digital systems. This component ensures that the system's microprocessor is reset to a known state during power-up, power-down, or brown-out conditions. The MAX6866UK16D3S+T is particularly well-suited for portable and battery-powered applications due to its low power consumption and small footprint.

Encased in a small SOT-23 package, this voltage monitor offers a factory-set reset threshold voltage of 1.6V, which is ideal for managing low-voltage systems that require tight voltage monitoring. The device is capable of holding the microprocessor in the reset state until the system voltage exceeds the reset threshold plus the minimum voltage hysteresis, ensuring a stable system start-up.

One of the key features of the MAX6866UK16D3S+T is its ±1.5% reset threshold accuracy over the entire operating temperature range of -40°C to +85°C. This precision is critical for systems that cannot tolerate even minor deviations in voltage levels. The device also boasts an extremely low supply current of 1.2µA, which helps to maximize battery life in portable applications.

The voltage monitor provides an active-low reset signal with an internally fixed delay time of 140ms (minimum), which gives the system ample time to stabilize before coming out of reset. This delay ensures that the microprocessor and other critical components are fully operational before the system starts to execute instructions.

Additionally, the MAX6866UK16D3S+T features a manual reset input that allows for an external override, giving users the ability to initiate a system reset whenever necessary. This added flexibility is valuable for troubleshooting and maintenance purposes.

In summary, the Maxim Integrated MAX6866UK16D3S+T is a compact, energy-efficient, and highly accurate voltage monitor that offers critical protection for digital systems. Its easy integration and robust feature set make it an excellent choice for designers looking to enhance the reliability and performance of their microprocessor-based applications.