• 简体中文
• English

MAX6339：Quad Voltage µP Supervisory Circuit in SOT Package

Industry's Smallest Quad Voltage Reset IC

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. A variety of factory-trimmed threshold voltages are available to accommodate different supply voltages and tolerances with minimal external component requirements. The selection includes 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. The device is also available with one or two user-adjustable threshold options if non-standard thresholds are desired (use external resistor-divider network). The quad monitor provides a single active-low reset output that is asserted when any monitored input is below its associated threshold. The output is open drain with a weak internal pullup (10µA) to IN2. Reset remains low for a reset timeout period (140ms min) after all voltages are above the selected thresholds. The output is valid as long as either the IN1 or IN2 input voltage remains > 1V. The MAX6339 is available in a small 6-pin SOT23 package and operates over the extended (-40°C to +85°C) temperature range.

Key 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 active-low RESET Output with 10µA Internal Pullup 140ms (min) Reset Timeout Period Active-low 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

MAX6339: Typical Operating Circuit Applications/Uses Computers: Desktop, Workstation, Server Data Storage Equipment High-End Printers Industrial Equipment Network Equipment Set-Top Boxes Telecommunications

DataSheet

Parametrics

Quality and Environmental Data

• MAX6339.pdf

Related Products

• MAX6338：Quad Voltage Monitor with Four Outputs in µMax Package
• MAX6358：Dual/Triple-Voltage µP Supervisory Circuits
• MAX6359：Dual/Triple-Voltage µP Supervisory Circuits
• MAX6356：Dual/Triple-Voltage µP Supervisory Circuits
• MAX6360：Dual/Triple-Voltage µP Supervisory Circuits
• MAX6357：Dual/Triple-Voltage µP Supervisory Circuits
• MAX6354：Dual/Triple-Voltage µP Supervisory Circuits
• MAX6352：Dual/Triple-Voltage µP Supervisory Circuits
• MAX6355：Dual/Triple-Voltage µP Supervisory Circuits
• MAX6353：Dual/Triple-Voltage µP Supervisory Circuits
• MAX6351：Dual/Triple-Voltage µP Supervisory Circuits
• MAX8213：Five Universal Voltage Monitors, Complete µP Voltage Monitoring
• MAX8214：Five Universal Voltage Monitors, Complete µP Voltage Monitoring
• MAX8215：±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors
• MAX8216：±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors

Ordering Information