Maxim Integrated MAX6389XS16D3-T Microprocessor Reset Circuit

The MAX6389XS16D3-T is a robust microprocessor (μP) supervisory circuit designed by Maxim Integrated to monitor power supplies in μP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems that require a reset. This device is particularly suitable for portable, battery-powered applications due to its low power consumption and small footprint.

This supervisory circuit ensures that the μP is reset to a known state during power-up, power-down, or brown-out conditions. The MAX6389XS16D3-T features a preset voltage threshold of 1.6V, which is monitored to ensure that the power supply remains within acceptable limits. If the voltage drops below this threshold, the reset signal is asserted to prevent system errors and data corruption.

The reset output of the MAX6389XS16D3-T is guaranteed to be in the correct state for VCC down to 1.0V, and the device can operate over a wide temperature range of -40°C to +85°C, making it versatile for various industrial environments. The circuit comes in a compact, 4-pin SC70 package, which is highly space-efficient for modern electronic assemblies.

Key features of the MAX6389XS16D3-T include:

• Precision factory-set VCC reset thresholds
• Immunity to short VCC transients
• Low power consumption
• 150ms min power-on reset pulse width
• Active-low, push-pull reset output
• Can be used with a wide range of supply voltages
• Compact SC70 packaging

Applications for this device are diverse, including but not limited to:

• Portable/Battery-Powered Equipment
• Computers and Controllers
• Embedded Systems
• Data Storage Equipment
• Medical Devices
• Automotive Systems

With its combination of features, the MAX6389XS16D3-T from Maxim Integrated is an ideal choice for system designers looking for a reliable, no-hassle reset circuit to safeguard their digital systems against power supply anomalies.