The MAX821REUS is a precision voltage monitor designed by Maxim Integrated, a trusted leader in the development of innovative analog and mixed-signal products and technologies. This compact, high-performance device is engineered to ensure reliable operation of microprocessors (µPs) and digital systems by monitoring their power supplies.

Key Features:

• Supply Voltage Monitoring: The MAX821REUS is capable of monitoring a +3.3V or adjustable threshold voltage, making it versatile for a variety of applications.
• Low Power Consumption: With its low quiescent current draw, this voltage monitor is an excellent choice for power-sensitive designs.
• Reset Output: It provides a reset output which remains asserted for a minimum of 140ms after VCC has risen above the reset threshold, ensuring a reliable system reset.
• Manual Reset Input: A dedicated manual reset input allows for a system reset to be triggered with an external signal, offering additional system control.
• Compact Package: The device comes in a small SOT-143 package, saving valuable board space in space-constrained applications.

Applications:

The MAX821REUS is ideal for use in a broad range of applications where precise voltage monitoring is critical. It is commonly used in portable/battery-powered equipment, embedded systems, computers, and industrial systems where maintaining the correct operation voltage is crucial for system reliability and performance.

Technical Specifications:

• Supply Voltage Range: 1.0V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Accuracy: ±2%
• Package Type: SOT-143

In conclusion, the MAX821REUS voltage monitor from Maxim Integrated offers a robust and reliable solution for monitoring the supply voltage of digital systems. Its low power consumption, compact design, and precision monitoring capabilities make it a top choice for engineers and designers looking to enhance system stability and performance.