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MAX808MCSA

Description
Supervisory Circuits
CategoryPower/power management    The power supply circuit   
File Size134KB,12 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX808MCSA Overview

Supervisory Circuits

MAX808MCSA Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSOIC
package instruction0.150 INCH, SO-8
Contacts8
Reach Compliance Codenot_compliant
ECCN codeEAR99
Other featuresCMOS RAM WRITE PROTECTION, BATTERY-BACKUP MODE
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length4.9 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)245
power supply5 V
Certification statusNot Qualified
Maximum seat height1.75 mm
Maximum supply current (Isup)0.09 mA
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)
Nominal supply voltage (Vsup)5 V
surface mountYES
technologyBICMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width3.9 mm
19-1086; Rev 1; 11/05
8-Pin µP Supervisory Circuits
with ±1.5% Reset Accuracy
_______________General Description
The MAX801/MAX808 microprocessor (µP) supervisory
circuits monitor and control the activities of +5V µPs by
providing backup-battery switchover, low-line indica-
tion, and µP reset. Additional features include a watch-
dog for the MAX801 and CMOS RAM write protection
for the MAX808.
The MAX801/MAX808 offer a choice of reset-threshold
voltage (denoted by suffix letter): 4.675V (L), 4.575V
(N), and 4.425V (M). These devices are available in
8-pin DIP and SO packages.
____________________________Features
Precision Voltage Monitoring, ±1.5% Reset
Accuracy
200ms Power-OK/Reset Time Delay
RESET Output (MAX808)
RESET and RESET Outputs (MAX801)
Watchdog Timer (MAX801)
On-Board Gating of Chip-Enable Signals (MAX808):
Memory Write-Cycle Completion
3ns CE Gate Propagation Delay
1µA Standby Current
Power Switching:
250mA in V
CC
Mode
20mA in Battery-Backup Mode
MaxCap™/SuperCap™ Compatible
RESET Guaranteed Valid to V
CC
= 1V
Low-Line Threshold 52mV Above Reset
Threshold
MaxCap is a trademark of The Carborundum Corp.
SuperCap is a trademark of Baknor Industries.
MAX801L/M/N, MAX808L/M/N
________________________Applications
Computers
Controllers
Intelligent Instruments
Critical µP Power Monitoring
Portable/Battery-Powered Equipment
Embedded Systems
______________Ordering Information
PART*
TEMP RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
8 Plastic DIP
8 SO
8 Plastic DIP
8 SO
8 CERDIP**
8 Plastic DIP
8 SO
8 Plastic DIP
MAX801_CPA
MAX801_CSA
MAX801_EPA
MAX801_ESA
MAX801_MJA
MAX808_CPA
MAX808_CSA
MAX808_EPA
Pin Configurations appear at end of data sheet.
__________Typical Operating Circuit
+5V
0.1μF
0.1μF
V
CC
OUT
POWER FOR
CMOS RAM
NMI
RESET
μP
POWER
BATT
0.1μF
LOWLINE
RESET
MAX808_ESA
-40°C to +85°C
8 SO
MAX808_MJA
-55°C to +125°C
8 CERDIP**
*These
parts offer a choice of reset threshold voltage. From the
table below, select the suffix corresponding to the desired thresh-
old and insert it into the blank to complete the part number.
**Contact
factory for availability and processing to MIL-STD-883.
Devices in PDIP, SO and µMAX packages are available in both
leaded and lead-free packaging. Specify lead free by adding the
+ symbol at the end of the part number when ordering. Lead free
not available for CERDIP package.
RESET THRESHOLD (V)
SUFFIX
L
N
M
MIN
4.60
4.50
4.35
TYP
4.675
4.575
4.425
MAX
4.75
4.65
4.50
1
µP SYSTEM
MAX808
CE IN
CE OUT
GND
FROM I/O SYSTEM OR
ADDRESS DECODER
TO CMOS RAM
________________________________________________________________
Maxim Integrated Products
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.
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