Low-Power, Single/Dual-Voltage µP Reset Circuits with Capacitor-Adjustable Reset Timeout Delay
General Description
The MAX6412–MAX6420 low-power microprocessor supervisor circuits monitor system voltages from 1.6V to 5V. These devices are designed to assert a reset signal whenever the VCCsupply voltage or RESET IN falls below its reset threshold or the manual reset input is asserted.
The reset output remains asserted for the reset timeout period after VCC and RESET IN rise above the reset threshold and the manual reset input is deasserted. The reset timeout is externally set by a capacitor to provide more flexibility.
Features
♦Monitor System Voltages from 1.6V to 5V
♦Capacitor-Adjustable Reset Timeout Period
♦Manual Reset Input MAX6412/MAX6413/MAX6414
♦Adjustable Reset Input Option MAX6415–MAX6420
♦Dual-Voltage Monitoring MAX6418/MAX6419/MAX6420
♦Low Quiescent Current 1.7µA, typ
♦3 RESET Output Options
Push-Pull RESET
Push-Pull RESET
Open-Drain RESET
♦Guaranteed Reset Valid to VCC= 1V
♦Power-Supply Transient Immunity
♦Small SOT23-5 Packages
Applications
Automotive
Medical Equipment
Intelligent Instruments
Portable Equipment
Battery-Powered Computers/Controllers
Embedded Controllers
Critical µP Monitoring
Set-Top Boxes
Computers