General Description

The MAX6339 is a precision quad voltage monitor with microprocessor (µP) supervisory reset timing. The device can monitor up to four system supply voltages without any external components and asserts a single reset if any supply voltage drops below its preset threshold. The device significantly reduces system size and component count while improving reliability compared to separate ICs or discrete components.

Features

♦ Monitors Four Power-Supply Voltages

♦ Precision Factory-Set Reset Threshold Options for +5.0V, +3.3V, +3.0, +2.5V, +1.8V, and -5.0V Supplies

♦ User-Adjustable Voltage Monitoring Threshold Options

♦ Low 55µA Supply Current

♦ Open-Drain RESET Output with 10µA Internal Pullup

♦ 140ms (min) Reset Timeout Period

♦ RESET Valid to IN1 = 1V or IN2 = 1V

♦ Immune to Short Monitored Supply Transients

♦ No External Components Required

♦ Guaranteed from -40°C to +85°C

♦ Small 6-Pin SOT23 Package

Applications

    Telecommunications

    High-End Printers

    Desktop and Network Computers

    Data Storage Equipment

    Networking Equipment

    Industrial Equipment

    Set-Top Boxes