The MAX6307UK31D3+ is a highly precise, versatile microprocessor (µP) supervisory circuit designed and manufactured by Maxim Integrated. This compact device is engineered to monitor power supplies in µP and digital systems, providing a robust layer of protection against system failures due to unstable or failing power supplies.

With its factory-set reset threshold voltage of 3.08V, the MAX6307UK31D3+ is particularly well-suited for 3.3V-powered systems. It ensures that the µP resets to a known state during power-up, power-down, or in the event of a brown-out condition. When the monitored power supply voltage drops below the preset threshold, the reset output is asserted, which remains active for a minimum of 140ms after the supply voltage exceeds the reset threshold, thus providing a stable reset signal to the associated µP.

The device comes in a small, space-saving SOT-23 package, making it ideal for use in space-constrained applications. It is also characterized for operation over a wide temperature range, from -40°C to +85°C, allowing it to function reliably in a variety of harsh environments.

Key features of the MAX6307UK31D3+ include:

• Factory-set reset threshold voltage: 3.08V
• Minimum reset timeout period: 140ms
• Low supply current: 17µA (typical)
• Guaranteed reset valid to VCC = 1V
• Immune to short VCC transients
• No external components required
• Compact SOT-23 packaging

This device is commonly used in applications such as computers, controllers, intelligent instruments, and portable/battery-powered equipment. By providing an accurate and reliable reset signal, the MAX6307UK31D3+ ensures that such systems operate safely, enhancing overall system stability and user confidence.

Maxim Integrated's commitment to quality and reliability is reflected in the design and production of the MAX6307UK31D3+, making it a smart choice for designers looking to incorporate a dependable µP supervisory circuit into their systems.