Home > Products > Power Management > μP Supervisory
Datasheet Reliability Report Package Information Order Sample  
Key Specifications
Part Number Description Status Reset Out treset (min) Watchdog Feature Watchdog Timeout Manual Reset Power Fail Comparator Reset Thresh. Accur. (@ +25°C) (%) Icc (max) (µA) RoHS Available Oper. Temp. (°C) Pin/Package EV Kit Available?
UM708xS Microprocessor Reset Circuit with Manual Reset and Push-Pull RESET& /RESET ACTIVE Push-pull, active HIGH/LOW 140ms No Yes Yes 2.5 150 Yes -40 to 85 8/SOP8 Y
View All>>

Product Description

The UM706xS/UM708xS/UM813xS series are cost effective system power supply supervisory circuits designed to monitor the power supplies in digital systems.
The UM706xS provides power-supply monitoring circuitry that generates a reset output during power-up, power-down, and brownout conditions. The reset output remains operational with VCC as low as 1V. Independent watchdog monitoring circuitry is also provided. This is activated if the watchdog input has not been toggled within 1.6 seconds. In addition, there is a 1.25V threshold detector for power-fail warning, low battery detection, or to monitor an additional power supply. An active low debounced manual reset input is also included.
The UM708xS is the same as the UM706xS, except an active-high reset is substituted for the watchdog timer. The UM813xS is the same as the UM706xS, except RESET is provided instead of RESET(_______________). All parts are available in a small outline SOP8 package.
 
Features
 
- Wide Operation Voltage Range of 1V to 5.5V
- Correct Logic Output Guaranteed to VCC=1.0V
- Precision Supply-Voltage Monitor: 2.63V, 2.93V, 3.08V, 4.38V, 4.63V
- 200ms Reset Pulse Width
- Independent Watchdog Timer-1.6s Timeout (UM706xS, UM813xS)
- Active-High Reset Output (UM708xS, UM813xS)
- Voltage Monitor for Power-Fail or Low-Battery Warning
- Temperature Range: -40°C to +85°C
- Supply Current of 80μA (Typ.)
  
Typical Application Circuit

 
Applications
 
- Applications Using DSPs, Microcontrollers or Microprocessors
- Programmable Controls
- Computers
- Embedded Systems
- Industrial Equipments
- Intelligent Instruments
- Wireless Communications Systems
 
Pin Configurations


                          UM708xS  
 
Ordering Information 

Part Number
Top Marking
RESET Threshold (V)
Timeout Period (ms)
Package Type
Shipping Qty
UM708LS
UM708LS
4.63
240
SOP8
3000pcs/13 Inch
Tape and Reel
UM708MS
UM708MS
4.38
240
UM708TS
UM708TS
3.08
240
UM708SS
UM708SS
2.93
240
UM708RS
UM708RS
2.63
240
@2014 Union Semiconductor Limited. All rights Reserved. 沪ICP备09013408
FOLLOW US