Product Overview: Maxim Integrated's MAX6731UTLD3+T

The MAX6731UTLD3+T is a highly reliable, low-power microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. This device is engineered to ensure that the system's microprocessor is reset to a known state in the event of a power failure, thereby enhancing system reliability and performance.

This supervisory circuit is particularly well-suited for battery-powered equipment due to its low power consumption. It features a factory-trimmed reset threshold voltage, which is designed to monitor 3.3V power supplies, with a precision of ±1.5% over temperature. The MAX6731UTLD3+T provides an active-low reset signal, ensuring that the connected µP remains in the reset state until the system voltage reaches the specified threshold and maintains above it for a certain period, known as the reset timeout period.

The device comes in a compact SOT23, 6-pin package, making it an excellent choice for space-constrained applications. Its operating temperature range of -40°C to +85°C allows for deployment in a diverse array of environments, from industrial to commercial settings.

Key features of the MAX6731UTLD3+T include:

• Low Quiescent Current: This feature is particularly beneficial for portable, battery-operated devices, as it helps to extend battery life.
• Manual Reset Input: The device provides a manual reset input, allowing for an external trigger to reset the system, which can be useful for debugging or during routine maintenance.
• Power Supply Transient Immunity: The MAX6731UTLD3+T is designed to ignore fast transients on the VCC line, which helps to prevent false resets from occurring.
• Factory-Trimmed Reset Threshold: The reset threshold is pre-set for 3.3V systems, ensuring compatibility with a wide range of digital applications.
• Reset Timeout Period: The device features a fixed reset timeout period, which guarantees that the µP will have adequate time to return to a stable operating condition before being allowed to run.

Overall, the MAX6731UTLD3+T from Maxim Integrated is a robust and reliable solution for monitoring the power supply voltage of microprocessors, offering enhanced system stability and protection against power supply inconsistencies.