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MAX690AEPA-

Description
RS-232 Interface IC 5V MultiCh RS-232 Driver/Receiver
Categorysemiconductor    Power management   
File Size546KB,13 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX690AEPA- Overview

RS-232 Interface IC 5V MultiCh RS-232 Driver/Receiver

MAX690AEPA- Parametric

Parameter NameAttribute value
Product CategorySupervisory Circuits
ManufacturerMaxim
RoHSDetails
TypeVoltage Supervisory
Mounting StyleThrough Hole
Package / CasePDIP-8
Threshold Voltage4.65 V
Number of Inputs Monitored1 Input
Output TypeActive Low, Push-Pull
Manual ResetNo Manual Reset
Watchdog TimersWatchdog
Battery Backup SwitchingBackup
Reset Delay Time280 ms
Supply Voltage - Max5.5 V
Maximum Operating Temperature+ 85 C
Minimum Operating Temperature- 40 C
PackagingTube
Chip Enable SignalsNo Chip Enable
Height4.45 mm
Length9.91 mm
Operating Supply Current500 uA
Overvoltage Threshold4.75 V
Pd - Power Dissipation727 mW
Power Fail DetectionYes
Factory Pack Quantity50
Supply Voltage - Min1.2 V
Undervoltage Threshold4.5 V
Width7.87 mm
Unit Weight0.032805 oz
MAX690A/MAX692A/
MAX802L/MAX802M/
MAX805L
General Description
The MAX690A/MAX692A/MAX802L/MAX802M/MAX805L
reduce the complexity and number of components
required for power-supply monitoring and battery-
control functions in microprocessor (μP) systems. They
significantly improve system reliability and accuracy
compared to separate ICs or discrete components.
These parts provide four functions:
1) A reset output during power-up, power-down, and
brownout conditions.
2) Battery-backup switching for CMOS RAM, CMOS μP,
or other low-power logic.
3) A reset pulse if the optional watchdog timer has not
been toggled within 1.6s.
4) A 1.25V threshold detector for power-fail warning or
low-battery detection, or to monitor a power supply
other than +5V.
The parts differ in their reset-voltage threshold levels and
reset outputs. The MAX690A/MAX802L/MAX805L generate
a reset pulse when the supply voltage drops below 4.65V,
and the MAX692A/MAX802M generate a reset below 4.40V.
The MAX802L/MAX802M guarantee power-fail accuracies
to ±2%. The MAX805L is the same as the MAX690A except
that RESET is provided instead of
RESET.
All parts are available in 8-pin DIP and SO packages.
The MAX690A/MAX802L are pin compatible with the
MAX690 and MAX694. The MAX692A/MAX802M are pin
compatible with the MAX692.
Microprocessor Supervisory Circuits
Features
● Precision Supply Voltage Monitor:
4.65V for MAX690A/MAX802L/MAX805L
4.40V for MAX692A/MAX802M
● Reset Time Delay: 200ms
● Watchdog Timer: 1.6s Timeout
● Battery-Backup Power Switching
● 200μA Quiescent Supply Current
● 50nA Quiescent Supply Current in Battery-
Backup Mode
● Voltage Monitor for Power-Fail or Low-Battery
Warning
● Power-Fail Accuracy Guaranteed to ±2%
(MAX802L/M)
● Guaranteed
RESET
Assertion to V
CC
= 1V
● 8-Pin SO and DIP Packages
Ordering Information
PART
MAX690ACPA
MAX690ACSA
MAX690AC/D
MAX690AEPA
MAX690AESA
MAX690AMJA
TEMP RANGE
0°C to +70°C
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
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice*
8 Plastic DIP
8 SO
8 CERDIP**
Applications
● Battery-Powered Computers and Controllers
Intelligent Instruments
● Critical μP Power Monitoring
Ordering Information continued at end of data sheet.
*Dice are specified at T
A
= +25°C
**Contact factory for availability and processing to MIL STD-
883. Devices in PDIP and SO packages are available in both
leaded and lead(Pb)-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.
Typical Operating Circuit
UNREGULATED
DC
R
1
0.1µF
PFI
R
2
3.6V
LITHIUM
BATTERY
V
BATT
REGULATED +5V
V
CC
V
CC
RESET
RESET
NMI
I/O LINE GND
BUS
V
CC
CMOS
RAM
GND
µP
Pin Configurations
TOP VIEW
V
OUT
V
CC
1
2
MAX690A
MAX692A
MAX802L
MAX802M
MAX805L
MAX690A
PFO
MAX802L
WDI
8
7
6
5
V
BATT
RESET (RESET)
WDI
PFO
GND
V
OUT
GND 3
PFI 4
DIP/SO
( ) ARE FOR MAX805L ONLY.
19-4333; Rev 5; 4/15
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