Maxim Integrated's MAX690ACPA Microprocessor Supervisory Circuit

The MAX690ACPA is a highly reliable microprocessor (µP) supervisory circuit designed and manufactured by Maxim Integrated, a leader in analog and mixed-signal engineering. This precision device is engineered to maintain system integrity and prevent data corruption during power failures or unpredictable conditions in digital systems, particularly those involving a microprocessor or microcontroller.

The MAX690ACPA offers a variety of features that make it an essential component for systems requiring robust power management and monitoring. It includes a reset output that remains asserted for a minimum of 200ms after VCC has risen above the reset threshold level, ensuring a proper system reset during power-up, power-down, or brownout conditions. This feature guarantees that the µP powers up in a known state, which is critical for system stability.

Additionally, the device provides a 1.3V threshold detector for power-fail warning, low-battery detection, or to monitor a power supply other than +5V. It also includes a debounced manual reset input, allowing for a manual system reset. This versatility makes the MAX690ACPA a suitable choice for a wide range of applications, including computers, controllers, intelligent instruments, critical µP power monitoring, and portable/battery-powered equipment.

The MAX690ACPA operates over a wide supply voltage range of 4.5V to 5.5V, making it compatible with standard +5V power supplies. It is available in an 8-pin PDIP package, which is conducive for use in systems with limited space. The device also features low power consumption, drawing a quiescent current of only 35µA, which is beneficial for power-sensitive applications.

Maxim Integrated's commitment to quality ensures that the MAX690ACPA meets stringent reliability standards, providing designers with confidence in the stability and performance of their systems. With its combination of reset and monitoring functions, the MAX690ACPA is a comprehensive solution for any application requiring reliable µP supervision.

For those looking to integrate the MAX690ACPA into their designs, datasheets and additional technical resources are available on the Maxim Integrated website, providing in-depth information on specifications, application notes, and usage guidelines.