Maxim Integrated's MAX6744XKSVD3+T Low-Power Microprocessor Supervisory Circuit

The MAX6744XKSVD3+T from Maxim Integrated is a highly reliable, low-power microprocessor (µP) supervisory circuit designed to monitor power supplies in digital systems. It ensures that the microprocessor is reset to a known state during power-up, power-down, or brown-out conditions. The device is available in a compact, 5-pin SC70 package, making it an ideal choice for space-constrained applications.

This supervisory circuit provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5V-powered or 3V-powered systems. The MAX6744XKSVD3+T features a factory-trimmed reset threshold voltage, which allows users to monitor a variety of supply voltages. It is particularly well-suited for portable electronics, computers, controllers, and intelligent instruments where size and reliability are critical.

The reset output of the MAX6744XKSVD3+T is guaranteed to be in the correct state for VCC down to 1V. It also offers a manual reset feature, enabling a reset to be triggered with a push-button or other input, providing an additional layer of system control. The reset active timeout period is externally settable, allowing designers to customize the reset deassertion delay to match specific system requirements.

Key features of the MAX6744XKSVD3+T include:

• Factory-trimmed VCC reset threshold voltages for 5V and 3V systems
• Low power consumption, ideal for battery-operated devices
• Manual reset input for additional system control
• Immune to short VCC transients
• High threshold accuracy over temperature
• Reset output valid down to VCC = 1V
• Compact 5-pin SC70 package

Applications for the MAX6744XKSVD3+T are diverse and include systems that require a reliable reset signal to ensure proper operation upon power-up or during voltage dips. Examples include portable/battery-powered equipment, embedded controllers, automotive electronics, and industrial systems.

By integrating the MAX6744XKSVD3+T supervisory circuit into your design, you can enhance system reliability, reduce component count, and maintain a high level of performance in environments where power conditions are unpredictable.