General Description

The MAX6467/MAX6468 microprocessor (µP) supervisory circuits monitor single power-supply voltages from +1.8V to +5.0V and assert a reset if the supply voltage drops below its preset threshold. An edge-triggered, one-shot manual reset function ensures that the µP enters the reset mode for a fixed timeout period only, even in the event of a continuously asserted manual reset. The MAX6467/MAX6468 significantly improve system reliability compared to traditional manual reset supervisory circuits.

Features

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

● Edge-Triggered Manual Reset Input with One-Shot Pulsed Reset Output

● Two Reset Timeout Period Options (150ms or 1200ms min)

● Immune to Short Voltage Transients

● Low Supply Current (3µA at VCC = +1.8V)

● RESET Valid to VCC = +1V

● Active-Low Open-Drain and Push-Pull RESET Output Options

● -40°C to +125°C Operating Temperature Range

● Small 4-Pin SC70 and SOT143 Packages

● No External Components Required

● Pin Compatible with MAX811, MAX6315, MAX6384, and MAX6386

● AEC-Q100 Qualified, Refer to Ordering Information for Specific /V Parts

Applications

● Cell Phones/PDAs

● Embedded Control Systems

● Industrial Equipment

● Automotive Products

● Portable/Battery-Powered Equipment

● Medical Devices

● DSL Modems

● MP3 Players

● GPS Systems

● Digital Cameras