Maxim Integrated MAX6719UTTZD3+T Microprocessor Supervisory Circuits

The MAX6719UTTZD3+T from Maxim Integrated is a highly reliable and versatile 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 2.5V to 5.5V power supplies.

This supervisory circuit ensures that the μP is reset to a known state during power-up, power-down, or brownout conditions. The MAX6719UTTZD3+T features a factory-trimmed reset threshold voltage, which allows it to maintain system integrity by asserting a reset signal whenever the V<sub>CC supply voltage falls below the preset threshold. The reset output remains asserted for a minimum timeout period after V<sub>CC has risen above the reset threshold, ensuring the system has sufficient time to stabilize.

The device comes in a small, 6-pin SOT23 package, making it ideal for use in space-constrained applications. Its low supply current of 5.5μA (typical) is particularly beneficial for portable and battery-powered equipment, where power efficiency is crucial.

Key features of the MAX6719UTTZD3+T include:

• Factory-set reset threshold voltages for high accuracy
• Minimum 140ms reset timeout period
• Low supply current of 5.5μA (typical)
• Wide operating voltage range of 2.5V to 5.5V
• Immune to short V<sub>CC transients
• Compact 6-pin SOT23 package

Applications for this supervisory circuit are vast and include:

• Computers and Controllers
• Portable/Battery-Powered Equipment
• Intelligent Instruments
• Critical μP and μC Power Monitoring

With its precision monitoring and low power consumption, the MAX6719UTTZD3+T is an excellent choice for designers looking to enhance the reliability and performance of their digital systems. Maxim Integrated's commitment to quality ensures that this supervisory circuit will maintain the integrity of your application under a variety of conditions.