MAX670 Maxim, MAX670 Datasheet
MAX670
Manufacturer Part Number
MAX670
Description
Low-Voltage / SOT23 P Supervisors with Power- Fail In/Out / Manual Reset / and Watchdog Timer
Manufacturer
Maxim
Datasheet
1.MAX670.pdf
(9 pages)
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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
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
Selector Guide with Top marks appears at end of data sheet.
19-2324; Rev 1; 4/02
Pin Configuration appears at end of data sheet.
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.
Voltage µP Supervisory Circuits in SOT Package
Telecommunications
High-End Printers
Desktop and Notebook Computers
Data Storage Equipment
Networking Equipment
Industrial Equipment
Set-Top Boxes
Servers/Workstations
CC
________________________________________________________________ Maxim Integrated Products
is above 2V (MAX6700/MAX6710Q).
Low-Voltage, High-Accuracy, Triple/Quad
General Description
o Monitor Up to Four Power-Supply Voltages
o Precision Factory-Set Reset Threshold Options
o Adjustable Voltage Threshold Monitors Down to
o Low 35µA Supply Current
o Open-Drain RESET Output with 10µA Internal
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
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.
MAX6700UT-T
MAX6710_UT-T
for 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V Supplies
0.62V with 1.5% Accuracy
Pullup
MONITORED
SUPPLIES
PART
TO BE
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
IN1
IN2
IN3
IN4
MAX6700
MAX6710
GND
RESET
PIN-PACKAGE
6 SOT23-6
6 SOT23-6
Features
µP
1
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