Maxim Integrated MAX933ESA+T Microprocessor Supervisory Circuits

The MAX933ESA+T is a highly efficient and reliable microprocessor supervisory circuit produced by Maxim Integrated, designed to monitor power supplies in microprocessor and digital systems. It provides a significant level of system reliability and precision with minimal power consumption, making it an ideal solution for portable and battery-operated applications.

This supervisory circuit helps in preventing code execution errors during power-up, power-down, and brownout conditions. The MAX933ESA+T monitors the system voltage and maintains a reset output until the system voltage stabilizes within the acceptable range and after a preset timeout period. This feature ensures that the microprocessor (or microcontroller) only operates in a stable power environment.

The device is characterized by its low supply current of only 12µA (typical), which is particularly beneficial for power-sensitive designs. Furthermore, the MAX933ESA+T has an active-low reset output with a 140ms minimum reset timeout period, which provides ample time for the system to recover from a power fault condition.

Encapsulated in a compact 8-pin SO package, the MAX933ESA+T operates over a wide temperature range of -40°C to +85°C. This temperature range, coupled with the small form factor, makes the device versatile for various applications, from industrial controls to consumer electronics.

Key features of the MAX933ESA+T include:

• Low power consumption: 12µA supply current
• Wide operating voltage range: 2.5V to 5.5V
• Programmable reset timeout period
• Active-low reset output
• Compact SO-8 packaging
• Temperature range of -40°C to +85°C

Maxim Integrated's MAX933ESA+T is a robust choice for system designers looking for a supervisory circuit that combines low power, precision monitoring, and a small footprint. Its ease of integration and dependable performance ensure that digital systems operate smoothly and without interruption due to power supply anomalies.