MAX6339OUT

The MAX6339OUT from Analog Devices is a precision quad voltage monitor designed for microprocessor supervisory reset timing. This integrated circuit can monitor up to four system supply voltages without requiring external components, thereby reducing system size and component count while improving reliability.

A variety of factory-trimmed threshold voltages are available to accommodate different supply voltages and tolerances. The device offers internally fixed options for monitoring +5.0V, +3.3V, +3.0V, +2.5V, +1.8V, and -5.0V supplies with -5% and/or -10% tolerances. It also supports user-adjustable threshold options for non-standard requirements.

The MAX6339OUT provides a single active-low reset output that asserts when any monitored input drops below its preset threshold. The output is open drain with a weak internal pullup. A reset timeout period of 140ms minimum is maintained after all voltages are above their selected thresholds. The device operates over an extended temperature range of -40°C to +85°C and is available in a small 6-pin SOT23 package, suitable for surface mount applications.

Key applications include telecommunications, high-end printers, desktop and network computers, data storage equipment, networking equipment, industrial equipment, and set-top boxes.