MAX6412_12 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – Low-Power, Single/Dual-Voltage μP Reset Circuits with Capacitor-Adjustable Reset Timeout Delay

MAX6412–MAX6420
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 V_CC supply 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 V_CC 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.
The MAX6412/MAX6413/MAX6414 feature fixed thresholds
from 1.575V to 5V in approximately 100mV increments and
a manual reset input. The MAX6415/MAX6416/MAX6417
are offered with an adjustable reset input that can monitor
voltages down to 1.26V and the MAX6418/MAX6419/
MAX6420 are offered with one fixed input and one
adjustable input to monitor dual-voltage systems.
The MAX6412/MAX6415/MAX6418 have an active-low,
push-pull reset output. The MAX6413/MAX6416/
MAX6419 have an active-high, push-pull reset output
and the MAX6414/MAX6417/MAX6420 have an active-
low, open-drain reset output. All of these devices are
offered in a SOT23-5 package and are fully specified
from -40°C to +125°C.
Applications
Automotive
Medical Equipment
Intelligent Instruments
Portable Equipment
Battery-Powered Computers/Controllers
Embedded Controllers
Critical µP Monitoring
Set-Top Boxes
Computers
Pin Configuration
TOP VIEW
RESET/RESET 1
GND 2
MAX6412–
MAX6420
5 V_CC
RESET IN (MR) 3
4 SRT
SOT23-5
( ) FOR THE MAX6412/MAX6413/MAX6414.
Features
o Monitor System Voltages from 1.6V to 5V
o Capacitor-Adjustable Reset Timeout Period
o Manual Reset Input
(MAX6412/MAX6413/MAX6414)
o Adjustable Reset Input Option (MAX6415–MAX6420)
o Dual-Voltage Monitoring
(MAX6418/MAX6419/MAX6420)
o Low Quiescent Current (1.7µA, typ)
o 3 RESET Output Options
Push-Pull RESET
Push-Pull RESET
Open-Drain RESET
o Guaranteed Reset Valid to V_CC = 1V
o Power-Supply Transient Immunity
o Small SOT23-5 Packages
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX6412UK_ _-T
-40°C to +125°C 5 SOT23
MAX6413UK_ _-T
-40°C to +125°C 5 SOT23
MAX6414UK_ _-T
-40°C to +125°C 5 SOT23
MAX6415UK-T
-40°C to +125°C 5 SOT23
MAX6416UK-T
-40°C to +125°C 5 SOT23
MAX6417UK-T
-40°C to +125°C 5 SOT23
MAX6418UK_ _-T
-40°C to +125°C 5 SOT23
MAX6419UK_ _-T
-40°C to +125°C 5 SOT23
MAX6420UK_ _-T
-40°C to +125°C 5 SOT23
MAX6420UK_ _/V-T -40°C to +125°C 5 SOT23
Note: The MAX6412/MAX6413/MAX6414 and MAX6418/
MAX6419/MAX6420 are available with factory-set V_CC reset
thresholds from 1.575V to 5.0V in approximately 0.1V incre-
ments. Insert the desired nominal reset threshold suffix (from
Table 1) into the blanks following the letters UK. There are 33
standard versions with a required order increment of 2500
pieces. Sample stock is generally held on standard versions
only (see Standard Versions Table). Required order increment is
10,000 pieces for nonstandard versions. Contact factory for
availability. All devices are available in tape-and-reel only.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
/V denotes an automotive qualified part.
Selector Guide and Typical Operating Circuit appear at end
of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-2336; Rev 5; 8/12