Maxim Integrated MAX6348XR35-T Microprocessor Reset Circuit

The MAX6348XR35-T is a compact, highly reliable microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides a significant layer of protection by ensuring that the µP and its peripherals are reset properly during power-up, power-down, and brown-out conditions. This component is essential in applications where consistent and accurate operation is critical, such as in embedded systems, computers, controllers, and intelligent instruments.

This supervisory IC operates with a nominal reset threshold voltage of 3.5V, making it suitable for 3.3V-powered systems. It is engineered to maintain system integrity by asserting a reset signal whenever the VCC supply voltage falls below the preset threshold. The reset output remains asserted for a minimum timeout period after VCC has risen above the reset threshold, thus providing the system with ample time to stabilize.

The MAX6348XR35-T comes in a compact SC70 package, which is highly favored for space-constrained applications. It is available in tape and reel format, denoted by the '-T' suffix, facilitating efficient assembly processes for high-volume production. Its low supply current (typically 1.2µA at +25°C) makes it an ideal choice for portable and battery-operated equipment.

Key features of the MAX6348XR35-T include:

• Factory-trimmed reset threshold suitable for 3.3V-powered systems
• Guaranteed reset valid to VCC = 1V for low-voltage operation
• Low quiescent current, ideal for power-sensitive applications
• 150ms (min) reset timeout period
• Immunity to short VCC transients
• SC70 packaging for compact footprint

The device ensures that the connected µP and its peripherals are reset without the need for any external components, thereby reducing system complexity and potential points of failure. Its robust design and reliability make the MAX6348XR35-T a trusted solution for maintaining the integrity of electronic systems during adverse power conditions.

With its combination of features, the Maxim Integrated MAX6348XR35-T is the go-to component for designers seeking a simple yet effective way to enhance the reliability of their digital systems.