Maxim Integrated MAX6323CUT46+T Microprocessor Supervisory Circuit

The MAX6323CUT46+T from Maxim Integrated is a highly reliable 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 in systems with a 4.6V power supply voltage.

This supervisory circuit ensures that the microprocessor is reset to a known state during power-up, power-down, or brown-out conditions. The reset output is guaranteed to remain in the active state for a minimum of 140ms after VCC has risen above the reset voltage threshold. This ensures that the µP starts up in a predictable state every time.

The MAX6323CUT46+T features a precision temperature-compensated voltage reference and comparator circuit that monitors the status of VCC. When VCC falls below the factory-set reset threshold, the reset output is forced to an active state, signaling the microprocessor to reset. The device's low supply current of 1.2µA (typical) makes it ideal for use in portable equipment where power conservation is critical.

This supervisory circuit is available in a small, 6-pin SOT-23 package, making it suitable for use in space-constrained applications. The MAX6323CUT46+T operates over a wide temperature range of -40°C to +85°C, providing reliable performance across diverse environmental conditions.

Key features of the MAX6323CUT46+T include:

• Factory-set reset voltage threshold suitable for 4.6V systems
• Low supply current of 1.2µA (typical) for power-efficient operation
• Guaranteed reset valid to VCC = 1V for low-voltage operation
• Minimum reset pulse width of 140ms ensures reliable µP reset
• Immune to short VCC transients for robust performance
• Compact 6-pin SOT-23 package ideal for space-saving designs
• Operational temperature range of -40°C to +85°C for versatile use

The MAX6323CUT46+T is an essential component for systems requiring a high level of reliability and precision in voltage monitoring, such as portable devices, embedded systems, and other microprocessor-based applications.