Maxim Integrated MAX6414UK44+ Microprocessor Reset Circuit

The MAX6414UK44+ is a highly reliable and compact microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides a crucial function by ensuring that the µP and its peripherals are reset properly during power-up, power-down, and brown-out conditions. This device helps to prevent system errors and enhances the overall stability of electronic equipment.

Featuring a low supply current of only 1.5µA, the MAX6414UK44+ is designed for power-conscious applications. It operates by asserting a reset signal whenever the VCC supply voltage falls below the factory-set reset threshold level. The reset output remains asserted for a preset timeout period after VCC has risen above the reset threshold, ensuring that the system has sufficient time to stabilize before the processor starts operating.

The reset threshold voltage for the MAX6414UK44+ is precisely set at 4.4V, making it suitable for 5V-powered systems. The device comes in a compact SOT-23 package, which is ideal for space-constrained applications. It is also available in a variety of standard reset threshold voltages to accommodate different system requirements.

Key features of the MAX6414UK44+ include:

• Immunity to short VCC transients
• Low power consumption with 1.5µA supply current
• Guaranteed reset valid to VCC = 1V
• Factory-set reset threshold voltage of 4.4V
• Reset timeout period of 140ms (min)
• Compact 5-pin SOT-23 package
• Operating temperature range from -40°C to +125°C

The MAX6414UK44+ is a versatile component that can be used in a wide range of applications such as computers, controllers, intelligent instruments, portable/battery-powered equipment, and other critical µP systems. By providing reliable reset signals under varying conditions, this supervisory circuit helps maintain the integrity of system operations, making it an essential component for designers looking to enhance system reliability and performance.

With its precision monitoring capabilities and low power consumption, the Maxim Integrated MAX6414UK44+ is an excellent choice for managing µP systems that require an efficient and dependable supervisory function.