Maxim Integrated's MAX6420UK22+T Voltage Detector

The MAX6420UK22+T is a highly reliable and compact voltage detector designed by Maxim Integrated, a trusted name in the field of analog and mixed-signal products. This precision microprocessor (µP) supervisory circuit is specifically engineered to maintain system integrity by monitoring power supplies in digital systems. It provides a significant layer of protection against low voltage conditions, which can lead to system errors and data loss.

This voltage detector is designed to assert a reset signal whenever the VCC supply voltage falls below a preset threshold of 2.2V. The reset output remains asserted for a minimum reset timeout period after VCC rises above the reset threshold, ensuring the system has adequate time to stabilize before resuming operation. This feature is crucial for applications requiring a high degree of reliability and operational stability.

The device comes in a tiny SOT23 package, making it an ideal choice for space-constrained applications. Despite its small size, the MAX6420UK22+T does not compromise on performance. It offers a low supply current of only 1.2µA, making it suitable for portable and battery-operated equipment where power efficiency is a key consideration.

Additionally, the MAX6420UK22+T provides an active-low, push-pull reset output. This output configuration eliminates the need for an external pull-up resistor and contributes to the device's low power consumption. The push-pull output also provides a fast response time, which is essential for critical applications that cannot tolerate delays in the reset signal.

Maxim Integrated's MAX6420UK22+T is designed to operate over a wide temperature range, from -40°C to +125°C, allowing its use in environments with extreme temperature variations. This temperature resilience, combined with its power-saving features and compact footprint, makes the MAX6420UK22+T an excellent choice for automotive systems, computers, controllers, intelligent instruments, and other sophisticated electronic systems that require a dependable voltage monitoring solution.