Maxim Integrated MAX803REXR+T Voltage Monitor

The Maxim Integrated MAX803REXR+T is a highly reliable and precise voltage monitoring device, designed to ensure the stability and functionality of your electronic systems. This voltage monitor is an integral component for applications where voltage supervision is critical for the performance and safety of the system.

This compact, three-pin microprocessor (µP) supervisory circuit is engineered to monitor power supplies in digital systems. It provides a significant function by asserting a reset signal whenever the VCC supply voltage declines below a preset threshold, maintaining it until the supply voltage has stabilized above the threshold for a specified period. This reset signal ensures that the processor and associated circuitry reset in a controlled manner during power-up, power-down, or brown-out conditions.

The MAX803REXR+T features an open-drain RESET output, which remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level. This delay ensures that the system has ample time to stabilize before the processor begins operation, preventing any erroneous actions during power transitions.

With its low supply current of only 17µA (typical), this device is an excellent choice for power-sensitive applications. The MAX803REXR+T operates over a wide voltage range and its threshold voltage is preset at the factory, offering various options to suit different system requirements. This flexibility makes it suitable for use in a diverse array of products, from portable/battery-powered devices to complex digital systems.

The device is available in a compact SOT-323 package, making it ideal for space-constrained applications. The MAX803REXR+T is also characterized for operation over the extended industrial temperature range of -40°C to +85°C, ensuring reliable performance in a variety of environments.

Maxim Integrated's commitment to quality and reliability is evident in the MAX803REXR+T voltage monitor, making it a trusted choice for safeguarding your valuable electronic systems.