Maxim Integrated DS1816R-20-U+ MicroMonitor Chip

The DS1816R-20-U+ is a versatile and compact micro-monitor chip designed by Maxim Integrated, a leader in the development of innovative analog and mixed-signal products. This micro-monitor is engineered to provide system health monitoring and protection for microprocessor (µP) systems, ensuring reliable operation and enhanced system stability.

The DS1816R-20-U+ operates by monitoring the power supply voltage levels of µP and digital systems. It provides a precise, factory-trimmed threshold that triggers a reset signal when the VCC supply voltage drops below a minimum acceptable level. This reset signal ensures that the µP and associated peripherals are reset properly, preventing any erratic behavior due to low voltage conditions.

Designed with convenience in mind, the DS1816R-20-U+ features an active-low, push-pull RESET output. This output remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level, allowing ample time for the system to stabilize before resuming operation. The chip's small SOT-23 package makes it an excellent choice for space-constrained applications.

Key features of the DS1816R-20-U+ include:

• Automatic system reset at power-up, power-down, and brownout conditions.
• Factory-trimmed VCC reset threshold at 2.88V.
• Low supply current of 17µA (typical), making it suitable for battery-powered applications.
• Guaranteed RESET output valid down to VCC = 1.2V.
• Immunity to short VCC transients.
• Operating temperature range from -40°C to +85°C, accommodating a wide range of environmental conditions.

The DS1816R-20-U+ is ideal for use in embedded systems, computers, controllers, and intelligent instruments where reliable system operation is critical. Its integration into a system not only enhances safety and stability but also supports the longevity and durability of the application it serves.

Maxim Integrated's commitment to quality ensures that the DS1816R-20-U+ micro-monitor chip is a dependable solution for system designers looking to safeguard their electronic products against the challenges of inadequate power supply conditions.