Maxim Integrated's MAX824TEXK+T Microprocessor Supervisory Circuits

The MAX824TEXK+T from Maxim Integrated is a state-of-the-art microprocessor (µP) supervisory circuit designed to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in system monitoring applications. This supervisory circuit is ideal for portable electronics, computers, controllers, and intelligent instruments where precise monitoring of the power supply voltage is crucial for proper operation.

The MAX824TEXK+T features a combination of functionalities that include a reset output during power-up, power-down, and brownout conditions. Its reset signal ensures that the µP initializes in a known state. The reset output remains operational with VCC as low as 1.2V, and the device is designed to assert a reset signal whenever the VCC supply voltage falls below the factory-set reset threshold. The reset signal remains asserted for a minimum reset timeout period after VCC rises above the reset threshold, ensuring system stability.

This supervisory circuit is available in a small, 5-pin SOT-23 package, making it an excellent choice for space-constrained applications. The MAX824TEXK+T operates over a wide temperature range, from -40°C to +125°C, which allows its use in environments with extreme temperature variations.

Key features of the MAX824TEXK+T include:

• Factory-set reset threshold voltages to accommodate different system requirements.
• Low supply current of 3.5µA (typical) ideal for battery-operated equipment.
• Reset timeout period of 140ms (min) to ensure proper system reset.
• Manual reset capability for added system control.
• Immunity to short VCC transients to maintain stable operation.

With its precision voltage monitoring and low power consumption, the MAX824TEXK+T is an essential component for managing system integrity. The device's robust feature set ensures that digital systems maintain operation within their specified voltage ranges, minimizing the risk of data loss or corruption due to power supply anomalies. By integrating the MAX824TEXK+T into your design, you can achieve enhanced reliability and performance for your electronic products.