Maxim Integrated MAX6816EUS-T Single/Dual Low-Voltage, Low-Power µP Supervisory Circuits

The MAX6816EUS-T from Maxim Integrated is a highly reliable single/dual low-voltage, low-power microprocessor (µP) supervisory circuit designed 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 with 5V-powered and 3V-powered systems.

This supervisory circuit ensures that the µP is reset to a known state during power-up, power-down, or brown-out conditions. The MAX6816 incorporates a range of features including a manual reset input, and it can assert a reset signal whenever the monitored voltage drops below the factory-set reset threshold. The reset output remains asserted for a preset timeout period after the voltage rises above the reset threshold, ensuring the µP has adequate time to stabilize.

The MAX6816EUS-T variant comes in a compact SOT-143 package, making it an ideal choice for space-constrained applications. It operates over a wide voltage range from 1.2V to 5.5V, which allows for versatile use in various system designs. Furthermore, this device consumes minimal power with a typical supply current of only 1µA, making it suitable for portable and battery-operated applications.

Key features of the MAX6816EUS-T include:

• Factory-set reset threshold voltages for precision monitoring
• Low power consumption of 1µA, ideal for battery-powered devices
• Guaranteed reset valid to VCC = 1.2V for low-voltage operations
• Debounced manual reset input for additional system control
• 200ms min power-on reset timeout period
• Immune to short VCC transients
• Compact SOT-143 package

Applications for the MAX6816EUS-T are diverse and include portable/battery-powered equipment, computers, controllers, intelligent instruments, critical µP and µC power monitoring, and automotive systems.

In summary, the Maxim Integrated MAX6816EUS-T supervisory circuit offers a combination of low power consumption, precision voltage monitoring, and compact packaging, making it a robust solution for enhancing the reliability of digital and microprocessor systems across a wide array of applications.