Datasheet > TL7700A

TL7700A

更新时间： 2024-11-08 22:42:11

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		监控
页数	文件大小	规格书
7页	53K
描述
SUPPLY VOLTAGE SUPERVISORS

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中文翻译

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数据手册

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TL7700A 数据手册

TL7700A Series

SUPPLY VOLTAGE SUPERVISORS

POWER-ON RESET GENERATOR

AUTOMATIC RESET GENERATION AFTER

VOLTAGEDROP

WIDE SUPPLY VOLTAGE RANGE ... 3V TO

18V

PRECISION VOLTAGESENSOR

TEMPERATURE-COMPENSATED VOLTAGE

REFERENCE

TRUE AND COMPLEMENT RESET OUTPUTS

EXTERNALLY ADJUSTABLE PULSE WIDTH

Minidip

DESCRIPTION

TheTL7700Aseriesaremonolithicintegratedcircuit

supplyvoltagesupervisorsspecificallydesi-gnedfor

use as reset controllers in microcomputer and mi-

croprocessorsystems. During power-upthe device

tests the supply voltageand keeps the RESET and

RESET outputs active (high and low, respectively)

as long as the supply voltage has not reached its

nominal voltage value. Taking RESIN low has the

sameeffect.Toensurethatthe microcomputersys-

temhasreset,theTL7700Atheninitiatesaninternal

timedelaythatdelaysthereturnofthe resetoutputs

totheirinactivestates.Sincethetimedelay formost

microcomputersandmicroprocessorsis intheorder

of several machine cycles, the device internal time

delayis determinedby an externaltime delay is de-

termined by an externalcapacitorconnectedto the

C_Tinput (pin 3).

SO8

ORDERING NUMBERS

Temperature Range

0 to 70^oC

Minidip

TL77XXACP

TL77XXAIP

S08

TL77XXACD

TL77XXAID

-25 to 85^oC

PIN CONNECTION (top view)

t_d=1.3 x 10⁴x C_T

Where : C_Tis in farads(F) and t_dinseconds (s). In

addition, when the supply voltage drops below the

nominal value, the outputs will be active until the

supplyvoltagereturns to the nominal value. An ex-

ternalcapacitor(typically0.1µF)mustbeconnected

to the REF output (pin 1) to reduce the influenceof

fast transientsin the supply voltage.

The TL7700AIseries is characterized for operation

from– 25^oC to85^oC ; theTL7700ACseriesis char-

acterizedfrom 0^oC to70^oC.

1/7

April 2000

12 3 4 5 6 7

中文翻译

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