Maxim Integrated MAX6333UR16D3 Microprocessor Reset Circuit

The MAX6333UR16D3 is a highly precise and robust microprocessor (μP) supervisory circuit designed by Maxim Integrated to monitor power supplies in μP and digital systems. This device provides a significant level of system reliability and accuracy required in critical electronic applications. The MAX6333UR16D3 ensures that the μP resets properly during a power failure, thereby safeguarding the system against erroneous operations.

This supervisory circuit features a factory-trimmed reset threshold voltage of 1.6V, making it suitable for low voltage operations. The reset output remains active for a minimum of 140ms after V<sub>CC has risen above the reset threshold level, providing ample time for the system to stabilize. This reset timeout feature is essential for preventing the system from starting up before it is ready.

The MAX6333 series comes in a tiny SOT23 package, which is ideal for space-constrained applications. The MAX6333UR16D3 specifically operates with a supply voltage range of 1.1V to 5.5V, catering to a wide variety of digital systems and ensuring compatibility with both 3.3V and 5V power supplies. Its low supply current of 5μA (typical) makes it an energy-efficient choice for portable and battery-powered devices.

Key features of the MAX6333UR16D3 include:

• Accurate factory-set reset thresholds for 1.6V systems
• Guaranteed reset valid to V<sub>CC = 1V
• Low power consumption with a typical supply current of 5μA
• Immunity to short V<sub>CC transients
• Push-pull RESET output which eliminates the need for external pull-up resistors
• Temperature range from -40°C to +85°C, suitable for industrial applications

The MAX6333UR16D3 is ideal for use in portable devices, computers, controllers, and intelligent instruments where efficient power monitoring is crucial. Its precision and reliability are hallmarks of Maxim Integrated's commitment to high-quality circuit solutions, ensuring that your electronic systems operate smoothly and without interruption.

With its combination of features, the MAX6333UR16D3 provides a compact, energy-efficient, and reliable solution for system reset functions, making it an essential component in the design of modern electronic systems.