Datasheet > LTC1694

LTC1694

更新时间： 2023-12-20 18:44:51

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
8页	186K
描述
SMBus/I2C 加速器

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中文翻译

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数据手册

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LTC1694 数据手册

LTC1694

SMBus/I C Accelerator*

FEATURES

DESCRIPTIO

The LT C^®1694 is a dual SMBus active pull-up designed to

enhance data transmission speed and reliability under all

specified SMBus loading conditions. The LTC1694 is also

compatible with the Philips I²C^TMBus.

■

Improves SMBus Rise Time Transition

■

Ensures Data Integrity with Multiple Devices

on the SMBus

Improves Low State Noise Margin

■

Auto Detect Low Power Standby Mode

The LTC1694 allows multiple device connections or a

longer, more capacitive interconnect, without compro-

mising slew rates or bus performance, by using two

bilevel hysteretic current source pull-ups.

■

Wide Supply Voltage Range: 2.7V to 6V

Low Profile (1mm) SOT-23 (ThinSOT^TM) Package

■

APPLICATIO S

During positive bus transitions, the LTC1694 current

sources provide 2.2mA to quickly slew the SMBus line.

During negative transitions or steady DC levels, the cur-

rent sources decrease to 275µA to improve negative slew

rate and improve low state noise margins. An auto detect

standby mode reduces supply current if both SCL and

SDA are high.

■

Notebook and Palmtop Computers

■

Portable Instruments

■

Battery Chargers

Industrial Control Application

TV/Video Products

ACPI SMBus Interface

■

The LTC1694 is available in a 5-pin SOT-23 package,

requiring virtually the same space as two surface mount

resistors.

, LTC and LT are registered trademarks of Linear Technology Corporation.

ThinSOT is a trademark of Linear Technology Corporation.

I²C is a trademark of Philips Electronics N.V.

*U.S. Patent No. 6,650,174

TYPICAL APPLICATIO

Comparison of SMBus Waveforms for

the LTC1694 vs Resistor Pull-Up

SMBus1

SMBus2

0.1µF

LTC1694

GND

LTC1694

SCL

SMBus

SDA

1V/DIV

R_PULL-UP

= 15.8k

CLK

DATA

CLK

DATA

CLK

OUT

DATA

OUT

CLK

OUT

DATA

OUT

V_CC= 5V

C_LD= 200pF

f_SMBus= 100kHz

1µs/DIV

DEVICE 1

DEVICE N

1694 TA02

1694 TA01

1694fa

12 3 4 5 6 7 8

中文翻译

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