19-2324; Rev 0; 1/02
Low-Voltage, High-Accuracy, Quad-Voltage
µP Supervisory Circuit in SOT Package
General Description
Features
The MAX6710 precision quad-voltage monitor with micro-
processor (µP) supervisory reset timing monitors up to
four system-supply voltages 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.
o Monitors Four Power-Supply Voltages
o Precision Factory-Set Reset Threshold Options
for 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V Supplies
o Adjustable Voltage Threshold Monitors Down to
0.62V with 1.5% Accuracy
o Low 35µA Supply Current
A variety of factory-trimmed threshold voltages are avail-
able to accommodate different supply voltages and toler-
ances with minimal external component requirements.
The selection includes internally fixed options for monitor-
ing 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V supplies with -5% or
-10% tolerances. The device is also available with one to
three adjustable threshold options to monitor voltages
down to 0.62V.
o Open-Drain RESET Output with 10µA Internal
Pullup
o 140ms (min) Reset Timeout Period
o RESET Valid to IN1 = 1V or IN2 = 1V
o Immune to Short Monitored Supply Transients
o Guaranteed from -40°C to +85°C
o Small 6-Pin SOT23 Package
A single active-low reset output asserts when any moni-
tored 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 volt-
age remains >1V.
Ordering Information
The MAX6710 is available in a small 6-pin SOT23 pack-
age and operates over the extended (-40°C to +85°C)
temperature range.
PART
TEMP RANGE
PIN-PACKAGE
MAX6710_UT-T*
-40 C to +85 C
6 SOT23-6
*Insert the desired suffix letter from the Selector Guide into the
blank to complete the part number. There is a 2500 piece mini-
mum order increment requirement on the SOT package and
these devices are available in tape-and-reel only.
________________________Applications
Telecommunications
High-End Printers
Desktop and Network Computers
Data Storage Equipment
Networking Equipment
Industrial Equipment
Set-Top Boxes
Typical Operating Circuit
MAX6710
IN1
SUPPLIES
IN2
TO BE
µP
RESET
MONITORED
IN3
IN4
GND
Selector Guide appears at end of data sheet.
Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.