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MAX708

Features: µMAX Package: Smallest 8-Pin SO Guaranteed RESET Valid at VCC = 1V Precision Supply-Voltage Monitor 4.65V in MAX705/MAX707/MAX813L 4.40V in MAX706/MAX708 200ms Reset Pulse Width Debounced TTL/CMOS-Compatible Manual-Reset Input Independent Watchdog Timer-1.6sec Timeout (MAX705/MAX7...

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SeekIC No. : 004412021 Detail

MAX708: Features: µMAX Package: Smallest 8-Pin SO Guaranteed RESET Valid at VCC = 1V Precision Supply-Voltage Monitor 4.65V in MAX705/MAX707/MAX813L 4.40V in MAX706/MAX708 200ms Reset Pulse Width Deb...

MAX708 Data Sheet

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Part Number:
MAX708
Supply Ability:
5000

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Product Details

Description



Features:

 µMAX Package: Smallest 8-Pin SO
Guaranteed RESET Valid at VCC = 1V
Precision Supply-Voltage Monitor
    4.65V in MAX705/MAX707/MAX813L
    4.40V in MAX706/MAX708
200ms Reset Pulse Width
Debounced TTL/CMOS-Compatible Manual-Reset Input
Independent Watchdog Timer-1.6sec Timeout (MAX705/MAX706)
Active-High Reset Output (MAX707/MAX708/MAX813L)
Voltage Monitor for Power-Fail or Low-Battery Warning

 




Application

Computers
Controllers
Intelligent Instruments
Automotive Systems
Critical µP Power Monitoring


Specifications

Terminal Voltage (with respect to GND)
    VCC ............................................................. -0.3V to 6.0V
    All Other Inputs (Note 1) ................ -0.3V to (VCC + 0.3V)
Input Current
   VCC .......................................................................... 20mA
   GND .......................................................................... 20mA
Output Current (all outputs) ....................................... 20mA
Continuous Power Dissipation
   Plastic DIP (derate 9.09mW/°C above +70°C) ...... 727mW
   SO (derate 5.88mW/°C above +70°C) .................. 471mW
   µMAX (derate 4.10mW/°C above +70°C) .............. 330mW
   CERDIP (derate 8.00mW/°C above +70°C) ............640mW
Operating Temperature Ranges
   MAX70_C__, MAX813LC__ ........................... 0°C to +70°C
   MAX70_E__, MAX813LE__ ........................ -40°C to +85°C
   MAX70_MJA ............................................ -55°C to +125°C
Storage Temperature Range ..................... -65°C to +160°C
Lead Temperature (soldering, 10sec) ................ ......+300°C


Description

The MAX705-MAX708/MAX813L microprocessor (µP) supervisory circuits reduce the complexity and number of components required to monitor power-supply and battery functions in µP systems.  These MAX708 signifi-cantly improve system reliability and accuracy com-pared to separate ICs or discrete components.

The MAX705/MAX706/MAX813L provide four functions:
1) A reset output during power-up, power-down, and brownout conditions.
2) An independent watchdog output that goes low if the watchdog input has not been toggled within 1.6 seconds.
3) A 1.25V threshold detector for power-fail warning,low-battery detection, or for monitoring a power sup-ply other than +5V.
4) An active-low manual-reset input.

The MAX707/MAX708 are the same as the MAX705/ MAX706, except an active-high reset is substituted for the watchdog timer.  The MAX813L is the same as the MAX705, except RESET is provided instead of RESET.

Two supply-voltage monitor levels are available:  The MAX705/MAX707/MAX813L generate a reset pulse when the supply voltage drops below 4.65V, while the MAX706/MAX708 generate a reset pulse below 4.40V. All four parts are available in 8-pin DIP, SO and µMAX packages.




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