Datasheet > LTC4303

LTC4303

更新时间： 2023-12-20 18:44:48

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
12页	549K
描述
具阻塞总线恢复功能的可热插拔型二线式总线缓冲器

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中文翻译

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数据手册

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LTC4303 数据手册

LTC4303

Hot Swappable 2-Wire

Bus Buffer with Stuck

Bus Recovery

FEATURES

DESCRIPTIO

The LTC^®4303 hot swappable 2-wire Bus Buffer allows I/O

card insertion into a live backplane without corruption of

the data and clock busses. When a connection is made,

the LTC4303 provides bidirectional buffering, keeping the

backplane and card capacitances isolated. If SDAOUT or

SCLOUTislowfor≥30ms(typ),theLTC4303automatically

breaks the data and clock bus connection. At this time the

LTC4303automaticallygeneratesupto16clockpulseson

SCLOUT in an attempt to free the bus. A connection will

be enabled automatically when the bus becomes free.

■

Automatic Disconnect of SDA/SCL Lines when Bus

is Stuck Low for ≥ 30ms

■

Recovers Stuck Busses with Automatic Clocking*

■

Bidirectional Buffer* for SDA and SCL Lines

Increases Fanout

■

Prevents SDA and SCL Corruption During Live

Board Insertion and Removal from Backplane

■

Pin Compatible with LTC4300A-1

■

1ꢀkꢁ ꢂuman Bodꢃ ꢄodel ꢅSD Protection

■

Isolates Input SDA and SCL Lines from Output

Compatible with I C^TM, I C Fast-Mode and SMBus

Standards (Up to 400kHz Operation)

READY Open Drain Output

■

Rise-timeacceleratorcircuitryallowstheuseoflargerpull-

up resistance while still meeting rise-time requirements.

During insertion, the SDA and SCL lines are precharged

to 1V to minimize bus disturbances. When driven high,

ENABLE allows the LTC4303 to connect after a stop bit or

busidleoccurs.DrivingENABLElowbreakstheconnection

betweenSDAINandSDAOUT,SCLINandSCLOUT.READY

is an open drain output that indicates when the backplane

and card sides are connected together.

■

1V Precharge on All SDA and SCL Lines

High Impedance SDA, SCL Pins for V = 0V

ENABLE Gates Connection from Input to Output

^{MSOP 8-Pin and}U^{DFN (3mm × 3mm) Packages}

APPLICATIO S

■

Hot Board Insertion

■

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

All other trademarks are the property of their respective owners.

Protected by U.S. Patents including 6356140, 6650174, 7032051.

Servers

■

Capacitance Buffer/Bus Extender

■

RAID Systems

TYPICAL APPLICATIO

Stuck Bus Resolved

with Automatic Clocking

5V 3.3V

0.01

10k 10k

LTC4303

SDAOUT

5V/DIV

SCLIN

SCLOUT

STUCK LOW > 30ms

RECOVERS

BACK_SCL

CARD_SCL

CARD_SDA

DISCONNECT AT TIMEOUT

AUTOMATIC CLOCKING

SDAIN

5V/DIV

SDAIN

SDAOUT

READY

BACK_SDA

3.3V

SCLOUT

5V/DIV

ENABLE

GND

100k

4303 TA01

4303 TA01b

200 s/DIV

BACKPLANE

CONNECTOR CONNECTOR

CARD

STAGGERED

4303fb

12 3 4 5 6 7...12

中文翻译

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与LTC4303相关器件

型号	品牌	获取价格	描述	数据表
LTC4303CDD	Linear	获取价格	Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery
LTC4303CDD#TRPBF	Linear	获取价格	LTC4303 - Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery; Package: DFN; Pins: 8;
LTC4303CMS8	Linear	获取价格	Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery
LTC4303CMS8#PBF	Linear	获取价格	LTC4303 - Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery; Package: MSOP; Pins: 8;
LTC4303CMS8#TR	Linear	获取价格	LTC4303 - Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery; Package: MSOP; Pins: 8;
LTC4303CMS8#TRPBF	Linear	获取价格	LTC4303 - Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery; Package: MSOP; Pins: 8;
LTC4303CMS8PBF	LINEAR_DIMENSIONS	获取价格	Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery
LTC4303IDD	Linear	获取价格	Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery
LTC4303IDD#PBF	Linear	获取价格	LTC4303 - Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery; Package: DFN; Pins: 8;
LTC4303IDD#TR	Linear	获取价格	LTC4303 - Hot Swappable 2-Wire Bus Buffer with Stuck Bus Recovery; Package: DFN; Pins: 8;

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