Maxim Integrated DS1817R-5/TR MicroMonitor Chip

The DS1817R-5/TR from Maxim Integrated is a highly reliable, compact 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 with +5V-powered circuits.

This micro-monitor chip comes in a small SOT-23 package, making it ideal for space-constrained applications. It serves a critical function by providing a reset signal to the µP during power-up, power-down, and brown-out conditions. The integration of such a device ensures that the µP starts operating in a predictable state.

Key Features:

• Power Supply Monitoring: The DS1817R-5/TR actively monitors the +5V power supply line, ensuring that the voltage level remains within acceptable thresholds for reliable operation.
• Automatic Reset: It generates a reset signal upon detecting out-of-tolerance power supply conditions, thus safeguarding the µP and associated circuitry from unpredictable behavior.
• Programmable Reset Timeout: The device features a programmable timeout period that determines the duration of the reset signal, allowing for flexibility in different system designs.
• Temperature Range: The DS1817R-5/TR operates over a wide temperature range, making it suitable for industrial applications where environmental conditions may vary.
• Low Power Consumption: With its low power consumption, this chip is an excellent choice for portable and battery-powered applications, where power efficiency is critical.
• Active-High Reset: The reset output is active-high, which is compatible with a variety of µP and logic systems.

Maxim Integrated's DS1817R-5/TR is a versatile and indispensable component for any system requiring robust power supply monitoring and reset capabilities. Its ease of use, combined with high reliability, makes it a preferred choice for designers looking to enhance system integrity without incurring significant costs or design complexities. Whether it's for industrial controls, consumer electronics, or automotive systems, the DS1817R-5/TR provides the necessary protection against power-related failures, ensuring smooth and safe operation of electronic equipment.