Datasheet > 7705BI

7705BI

更新时间： 2024-11-29 03:07:59

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
18页	389K
描述
SUPPLY-VOLTAGE SUPERVISORS

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数据手册

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7705BI 数据手册

TL7702B, TL7705B, TL7733B

SUPPLY-VOLTAGE SUPERVISORS

The TL7705BM is obsolete

and no longer is supplied.

SLVS037M – SEPTEMBER 1989 – REVISED MAY 2003

Power-On Reset Generator

Temperature-Compensated Voltage

Reference

Automatic Reset Generation After

Voltage Drop

True and Complement Reset Outputs

Externally Adjustable Pulse Duration

RESET Output Defined From V

Precision Voltage Sensor

≥ 1 V

TL77xxBC . . . D OR P PACKAGE

TL7705BM . . . JG PACKAGE

TL7705BQ . . . D PACKAGE

(TOP VIEW)

TL7705BM . . . FK PACKAGE

(TOP VIEW)

TL7705BM . . . U PACKAGE

(TOP VIEW)

REF

RESIN

SENSE

RESET

REF

RESIN

2 1 20 19

RESIN

SENSE

RESET

SENSE

GND

RESET

NC – No internal connection

9 10 11 12 13

NC – No internal connection

description/ordering information

The TL7702B, TL7705B, and TL7733B are integrated-circuit supply-voltage supervisors designed for use as

reset controllers in microcomputer and microprocessor systems. The supply-voltage supervisor monitors the

supply for undervoltage conditions at the SENSE input. During power up, the RESET output becomes active

(low) whenV attains a value approaching 1 V. AsV approaches 3 V (assuming that SENSE is aboveV ),

T+

the delay-timer function activates a time delay, after which outputs RESET and RESET go inactive (high and

low, respectively). When an undervoltage condition occurs during normal operation, outputs RESET and

RESET go active. To ensure that a complete reset occurs, the reset outputs remain active for a time delay after

the voltage at the SENSE input exceeds the positive-going threshold value. The time delay is determined by

the value of the external capacitor C : t ≈ 2.6 × 10 × C , where C is in farads (F) and t is in seconds (s).

T d

An external capacitor (typically 0.1 µF) must be connected to REF to reduce the influence of fast transients in

the supply voltage.

The TL7702BC, TL7705BC, and TL7733BC are characterized for operation from 0°C to 70°C. The TL7702BI,

TL7705BI, and TL7733BI are characterized for operation from –40°C to 85°C. The TL7705BQ is characterized

for operation from –40°C to 125°C. The TL7705BM is characterized for operation from –55°C to 125°C.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

On products compliant to MIL-PRF-38535, all parameters are tested

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

unless otherwise noted. On all other products, production

testing of all parameters.

processing does not necessarily include testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...18

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