The MAX6821TUK-T from Maxim Integrated is a compact, high-precision microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in system monitoring applications.

Key Features

• Power Supply Monitoring: Precisely monitors 3V, 3.3V, and 5V power supplies.
• Reset Timeout: Offers a fixed reset timeout delay of 140ms (min), ensuring proper system reset.
• Manual Reset: A manual reset input is provided, allowing a reset to be triggered with an external switch or logic signal.
• Low Power Consumption: Ideal for portable equipment due to its low supply current of 20µA (typical).
• Compact SOT23 Package: Available in a space-saving 5-pin SOT23 package, suitable for high-density PCB designs.

Applications

The MAX6821TUK-T is versatile and can be employed in a range of applications including:

• Computers and Servers
• Embedded Systems
• Portable/Battery-Powered Equipment
• Network and Telecom Infrastructure

Performance Specifications

This supervisory circuit is designed to maintain system integrity by asserting a reset signal whenever the monitored supply voltage drops below a preset threshold. It keeps the reset output active for a specified period after the supply voltage exceeds the reset threshold, ensuring the system microprocessor starts up in a known state.

Ordering and Availability

The MAX6821TUK-T is available for order in tape and reel format, denoted by the '-T' suffix, facilitating automated assembly processes. For detailed information on pricing, availability, and ordering, please visit the Maxim Integrated website or contact an authorized distributor.