MAX6700 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – Low-Voltage, High-Accuracy, Triple/Quad Voltage μP Supervisory Circuits in SOT Package

19-2324; Rev 1; 4/02
Low-Voltage, High-Accuracy, Triple/Quad
Voltage µP Supervisory Circuits in SOT Package
General Description
The MAX6700/MAX6710 precision triple/quad voltage
microprocessor (µP) supervisory circuits monitor up to
four system-supply voltages and assert a single reset if
any supply voltage drops below its preset threshold.
These devices significantly reduce system size and com-
ponent count while improving reliability compared to sep-
arate ICs or discrete components.
A variety of factory-trimmed threshold voltages are avail-
able to accommodate different supply voltages and toler-
ances with minimal external component requirements.
The MAX6710 includes internally fixed options for moni-
toring 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V supplies with -5%
or -10% tolerances. The MAX6710 is also available with
one to three adjustable threshold options to monitor volt-
ages down to 0.62V. The MAX6700 monitors three volt-
ages with adjustable thresholds down to 0.62V.
A single active-low output asserts when any monitored
input falls below its associated threshold. The open-drain
output has a weak internal pullup (10µA) to IN2. For the
MAX6710, reset remains low for the reset timeout period
(140ms min) after all voltages rise above the selected
threshold. The MAX6700 acts as a voltage detector with a
propagation delay of 5µs after all monitored voltages
exceed their thresholds. The output remains valid as long
as either IN2 or IN2 input voltage remains above 1V
(MAX6710) or V_CC is above 2V (MAX6700/MAX6710Q).
The MAX6700/MAX6710 are available in a small 6-pin
SOT23 package and operate over the extended (-40°C to
+85°C) temperature range.
________________________Applications
Telecommunications
High-End Printers
Desktop and Notebook Computers
Data Storage Equipment
Networking Equipment
Industrial Equipment
Set-Top Boxes
Servers/Workstations
Selector Guide with Top marks appears at end of data sheet.
Pin Configuration appears at end of data sheet.
Features
o Monitor Up to 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
o Open-Drain RESET Output with 10µA Internal
Pullup
o 5µs Propagation Delay (MAX6700)
o 140ms (min) Reset Timeout Period (MAX6710)
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
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX6700UT-T
-40°C to +85°C
6 SOT23-6
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. These
devices are available in tape-and-reel only.
Typical Operating Circuit
SUPPLIES
TO BE
MONITORED
IN1
MAX6700
MAX6710
IN2
RESET
µP
IN3
IN4
GND
________________________________________________________________ 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.