Datasheet > UM708TS

UM708TS

更新时间： 2025-07-29 01:04:59

品牌	Logo	应用领域
英联电子 - UNIONSEMI		/
页数	文件大小	规格书
15页	558K
描述
Supply Voltage Supervisor w/Watchdog Input and Manual Reset

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数据手册

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UM708TS 数据手册

UM706xS/UM708xS

Supply Voltage Supervisor w/Watchdog Input and Manual Reset

UM706xS SOP8

UM708xS SOP8

General Description

The UM706xS/UM708xS 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 V_CC

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. All parts are available in a small outline SOP8 package.

Applications

Features



Applications using DSPs, Microcontrollers  Wide Operation Voltage Range of 1V to 5.5V

or Microprocessors

Programmable Controls

Computers



Correct Logic Output Guaranteed to

V_CC=1.0V

Precision Supply-Voltage Monitor: 2.63V,

2.93V, 3.08V,4.38V,4.63V



Embedded System



200ms Reset Pulse Width

Independent Watchdog Timer-1.6s Timeout

(UM706xS)

Active-high Reset Output (UM708xS)

Voltage Monitor for Power-Fail or

Low-Battery Warning

Industrial Equipments

Intelligent Instrument

Wireless Communications Systems



Temperature Range: -40°C to +85°C

Supply Current of 80μA (Typ.)

Pin Configurations

Top View

V_CC

WDO(RESET)*

UM706(708)*

RESET

GND

PFI

WDI(NC)*

PFO

XX: Week Code

( )* for UM708xS

UM706xS

( )* for UM708xS

________________________________________________________________________

http://www.union-ic.com Rev.02 May.2014 1/15

12 3 4 5 6 7...15

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