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MAX806 Datasheet(PDF) 1 Page - Maxim Integrated Products

Part # MAX806
Description  3.0V/3.3V 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

MAX806 Datasheet(HTML) 1 Page - Maxim Integrated Products

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_______________General Description
These microprocessor (µP) supervisory circuits reduce
the complexity and number of components required for
power-supply monitoring and battery-control functions
in µP systems. They significantly improve system relia-
bility and accuracy compared to separate ICs or
discrete components.
These devices are designed for use in systems powered
by 3.0V or 3.3V supplies. See the selector guide in the
back of this data sheet for similar devices designed for
5V systems. The suffixes denote different reset threshold
voltages: 3.075V (T), 2.925V (S), and 2.625V (R) (see the
Reset Threshold section in the Detailed Description). All
these parts are available in 8-pin DIP and SO packages.
Functions offered in this series are as follows:
________________________Applications
Battery-Powered Computers and Controllers
Embedded Controllers
Intelligent Instruments
Automotive Systems
Critical µP Power Monitoring
Portable Equipment
____________________________Features
R
E
S
E
T
and RESET Outputs
♦ Manual Reset Input
♦ Precision Supply-Voltage Monitor
♦ 200ms Reset Time Delay
♦ Watchdog Timer (1.6s timeout)
♦ Battery-Backup Power Switching—
Battery Can Exceed VCC in Normal Operation
♦ 40µA VCC Supply Current
♦ 1µA Battery Supply Current
♦ Voltage Monitor for Power-Fail or
Low-Battery Warning
♦ Guaranteed
R
E
S
E
T
Assertion to VCC = 1V
♦ 8-Pin DIP and SO Packages
______________Ordering Information
3.0V/3.3V Microprocessor Supervisory Circuits
________________________________________________________________ Maxim Integrated Products
1
MAX690T/S/R
MAX802T/S/R
MAX804T/S/R
MAX805T/S/R
0.1
μF
VOUT
RESET
(RESET)
PFO
WDI
R1
VBATT
VCC
GND
GND
GND
VCC
0.1
μF
0.1
μF
3.6V
LITHIUM
BATTERY
CMOS RAM
μP
VCC
RESET
NMI
I/O LINE
UNREGULATED
DC
REGULATED +3.3V OR +3.0V
R2
BUS
( ) ARE FOR MAX804T/S/R, MAX805T/S/R
PFI
See last page for MAX704T/S/R, MAX806T/S/R.
__________________Pin Configuration
1
2
3
4
8
7
6
5
DIP/SO
TOP VIEW
PFO
VBATT
RESET (RESET)
WDI
<MR>
VOUT
VCC
GND
PFI
MAX690T/S/R
MAX704T/S/R
MAX802T/S/R
MAX804T/S/R
MAX805T/S/R
MAX806T/S/R
( ) ARE FOR MAX804T/S/R, MAX805T/S/R
< > ARE FOR MAX704T/S/R, MAX806T/S/R
_________Typical Operating Circuits
19-0243; Rev 2; 12/05
PART**
TEMP RANGE
MAX690_CPA
0°C to +70°C
MAX690_CSA
0°C to +70°C
MAX690_C/D
0°C to +70°C
Dice*
8 SO
8 Plastic DIP
PIN-PACKAGE
Part
MAX690_EPA
-40°C to +85°C
MAX690_ESA
-40°C to +85°C
MAX690_MJA
-55°C to +125°C
8 CERDIP
8 SO
8 Plastic DIP
MAX690
✓✓
±4%
±75mV
MAX704
✓✓
±4%
±75mV
MAX802
✓✓
±2%
±2%
MAX804
✓✓
±2%
±2%
MAX805
✓✓
±4%
±75mV
MAX806
✓✓
±2%
±2%
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**These parts offer a choice of reset threshold voltage. Select
the letter corresponding to the desired nominal reset threshold
voltage (T = 3.075V, S = 2.925V, R = 2.625V) and insert it into
the blank to complete the part number.
Devices in PDIP and SO 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.
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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