Maxim Integrated MAX6390XS29D4-T Microprocessor Reset Circuit

The MAX6390XS29D4-T is a compact, high-precision 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 that require voltage monitoring. This device is particularly well-suited for portable and battery-powered equipment due to its low power consumption and small footprint.

One of the key features of the MAX6390XS29D4-T is its ability to assert a reset signal whenever the VCC supply voltage falls below a preset threshold, ensuring that the µP powers up in a known state. The reset signal remains asserted for a minimum timeout period after VCC has risen above the reset threshold level, providing the system with ample time to stabilize.

The device operates with a nominal reset threshold voltage of 2.9V, which makes it ideal for 3.3V powered systems. It's available in a compact, 4-pin SC70 package, which is highly space-efficient, making it a perfect choice for space-constrained applications. The MAX6390XS29D4-T operates over a wide temperature range of -40°C to +125°C, ensuring reliable performance in diverse environmental conditions.

Additional features of the MAX6390XS29D4-T include a low supply current of 1.2µA (typical), which contributes to the extended battery life in portable applications. The device also has an active-low, open-drain RESET output, which allows for simple interfacing with other logic components.

Maxim Integrated's MAX6390XS29D4-T is a robust µP supervisory circuit that offers an optimal combination of low power consumption, small size, and high precision. It is an excellent choice for designers looking to enhance system reliability without incurring significant power or space penalties.

For applications requiring a reliable voltage monitoring solution, the MAX6390XS29D4-T provides an efficient and cost-effective option that is easy to implement in a wide range of electronic systems.