Maxim Integrated MAX6394US480D1/V+T Microprocessor Reset Circuit

The Maxim Integrated MAX6394US480D1/V+T is a highly reliable, low-power microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V-powered circuits.

This device performs a single function: it asserts a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after VCC has risen above the reset threshold. The reset output is available in either active-low push-pull or active-high push-pull configurations. This feature ensures that the µP is held in reset until the power supply has stabilized, providing a secure environment for system boot-up and initialization.

The MAX6394US480D1/V+T operates over a wide supply voltage range from 1.0V to 5.5V, making it suitable for a variety of applications, including portable/battery-powered equipment, computers, controllers, intelligent instruments, and critical µP power monitoring. The device's low supply current of 1.2µA (typ) is particularly advantageous for portable and battery-powered applications where power conservation is crucial.

Key features of the MAX6394US480D1/V+T include:

• Factory-set reset threshold voltages for high accuracy
• Immunity to short VCC transients
• Low power consumption with 1.2µA typical quiescent current
• 140ms min reset active time
• Operating temperature range from -40°C to +125°C
• Available in a compact SOT-23 package

Maxim Integrated's commitment to high-quality and reliability is evident in the MAX6394US480D1/V+T, making it an excellent choice for mission-critical applications where system integrity is paramount. The device's small footprint and ease of integration into existing designs also make it an attractive option for designers looking to enhance system reliability with minimal design changes.

Overall, the MAX6394US480D1/V+T is a testament to Maxim Integrated's expertise in creating robust power management solutions that meet the demanding requirements of modern electronic systems.