The MAX705ESA-T from Maxim Integrated is a highly reliable, low-power microprocessor (μP) supervisory circuit designed to monitor the power supplies in μP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in conjunction with +5V-powered circuits.

This supervisory circuit significantly improves system reliability by monitoring the power supply and providing a reset signal to the host processor during power-up, power-down, and brown-out conditions. The reset signal remains active for a minimum of 140ms after VCC has risen above the reset threshold level, ensuring the system has sufficient time to stabilize before the processor starts to execute code.

Key Features:

• Precision Monitoring of +5V Power-Supply Voltages: The MAX705ESA-T is specifically designed to monitor +5V power supplies, providing a precise threshold level for operations.
• Fully Integrated Standby Mode: This feature significantly reduces power consumption when the device is not in active use, making it ideal for power-sensitive applications.
• Reset Signal Valid to VCC = 1V: The device ensures that the reset signal is valid even at very low voltage levels, which is crucial for proper system reset and initialization.
• 140ms Min Power-On Reset Pulse Width: The extended pulse width ensures that the system has enough time to recover and initialize properly after a power failure.
• Debounced Manual Reset Input: The manual reset input is debounced, which prevents false triggers due to noise or brief contact closures.
• Low Cost: By minimizing external components, the MAX705ESA-T offers an economical solution for system power monitoring.

The device is available in an 8-pin SO package, which makes it easy to integrate into a variety of system designs. It operates over a wide temperature range, making it suitable for use in environments with varying temperature conditions.

With its combination of features, the MAX705ESA-T is an essential component for any system requiring reliable operation and monitoring of the power supply, ensuring safe and predictable μP system resets.