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MAX823 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part No. MAX823
Description  5-Pin Microprocessor Supervisory Circuits
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX823 Datasheet(HTML) 1 Page - Maxim Integrated Products

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_______________General Description
The MAX823/MAX824/MAX825* microprocessor (µP)
supervisory circuits combine reset output, watchdog,
and manual-reset input functions in a 5-pin SOT23-5
package. They significantly improve system reliability
and accuracy compared to separate ICs or discrete
components. The MAX823/MAX824/MAX825 are
specifically designed to ignore fast transients on VCC.
Five preprogrammed reset threshold voltages are
available, designated by the following package
suffixes: L = 4.63V, M = 4.38V, T = 3.08V, S = 2.93V,
and R = 2.63V. All three devices have an active-low
reset output, which is guaranteed to be in the correct
state for VCC down to 1V. The MAX824/MAX825 also
have an active-high reset output. The following
Selector
Guide explains the functions offered in this series of
parts.
________________________Applications
Battery-Powered Computers and Controllers
Embedded Controllers
Intelligent Instruments
Automotive Systems
Critical µP Monitoring
Portable/Battery-Powered Equipment
____________________________Features
o Precision Monitoring of +3V, +3.3V, and +5V
Power Supplies
o Operating Current: 10µA (MAX823L/M)
3µA (MAX825T/S/R)
o Fully Specified Over Temperature
o 140ms Min Power-On Reset
o Guaranteed RESET Valid to VCC = 1V
o Power-Supply Transient Immunity
o Watchdog Timer with 1.6sec Timeout
(MAX823/MAX824)
o Manual-Reset Input (MAX823/MAX825)
o No External Components
5-Pin Microprocessor Supervisory Circuits
________________________________________________________________
Maxim Integrated Products
1
1
5
2
3
4
1
5
2
3
4
1
5
2
3
4
GND
WDI
MR
VCC
RESET
MAX823
SOT23-5
TOP VIEW
GND
WDI
RESET
VCC
RESET
MAX824
SOT23-5
GND
MR
RESET
VCC
RESET
MAX825
SOT23-5
__________________________________________________________Pin Configurations
_____________________Selector Guide
19-0487; Rev 1; 6/97
PART
MAX823_EUK
MAX824_EUK
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
5 SOT23-5
5 SOT23-5
______________Ordering Information
†Insert the desired suffix letter (from the table below) into the
blank to complete the part number.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
MAX825_EUK
-40°C to +85°C
5 SOT23-5
MAX823
Active-Low Reset
Active-High Reset
FUNCTION
Watchdog Input
MAX824
MAX825
Manual-Reset Input
SUFFIX
RESET
THRESHOLD (V)
L
4.63
M
4.38
T
3.08
S
2.93
R
2.63
Typical Operating Circuit appears at end of data sheet.
Marking Information appears at end of data sheet.
*Patents Pending


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