LTC4300-2CMS8#PBF

更新时间： 2024-01-06 00:26:09

品牌	Logo	应用领域
凌特 - Linear		电源电路电源管理电路光电二极管
页数	文件大小	规格书
16页	288K
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数据手册
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LTC4300-2CMS8#PBF 数据手册

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LTC4300-1/LTC4300-2

Hot Swappable

2-Wire Bus Buffers

DESCRIPTIO

FEATURES

■

Bidirectional Buffer for SDA and SCL Lines

The LTC^®4300 series hot swappable 2-wire bus buffers

allow I/O card insertion into a live backplane without cor-

ruptionofthedataandclockbusses. Whentheconnection

is made, the LTC4300-1/LTC4300-2 provide bidirectional

buffering, keeping the backplane and card capacitances

isolated. Rise-time accelerator circuitry* allows the use of

weaker DC pull-up currents while still meeting rise-time

requirements. During insertion, the SDA and SCL lines are

precharged to 1V to minimize bus disturbances.

Increases Fanout

■

Prevents SDA and SCL Corruption During Live

Board Insertion and Removal from Backplane

■

Isolates Input SDA and SCL Lines from Output

Compatible with I²C^TM, I²C Fast Mode and SMBus

■

Standards (Up to 400kHz Operation)

■

Small MSOP 8-Pin Package

■

Low I_CCChip Disable: <1µA (LTC4300-1)

■

READY Open Drain Output (LTC4300-1)

The LTC4300-1 incorporates a CMOS threshold digital

ENABLE input pin, which forces the part into a low current

modewhendriventogroundandsetsnormaloperationwhen

driven to V_CC. It also includes an open drain READY output

pin, which indicates that the backplane and card sides are

connected together. The LTC4300-2 replaces the ENABLE

pin with a dedicated supply voltage pin, V_CC2, for the card

side, providinglevelshiftingbetween3.3Vand5Vsystems.

Both the backplane and card may be powered with supply

voltages ranging from 2.7V to 5.5V, with no contraints on

whichsupplyvoltageishigher.TheLTC4300-2alsoreplaces

the READY pin with a digital CMOS input pin, ACC, which

enables and disables the rise-time accelerator currents.

■

1V Precharge on all SDA and SCL Lines

■

Supports Clock Stretching, Arbitration and

Synchronization

■

5V to 3.3V Level Translation (LTC4300-2)

■

High Impedance SDA, SCL Pins for V_CC= 0V

APPLICATIO S

■

Hot Board Insertion

Servers

■

Capacitance Buffer/Bus Extender

■

Desktop Computer

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

I²C is a trademark of Philips Electronics N. V.

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

The LTC4300 is available in a small 8-pin MSOP package.

TYPICAL APPLICATIO

Input–Output Connection t_PLH

3.3V

0.01µF

24k

SCLIN

SCLOUT

C4*

OUTPUT

SIDE

50pF

INPUT

SIDE

150pF

C2*

SDAIN

SDAOUT

C5*

C3*

LTC4300-1

ENABLE

READY

GND

*CAPACITORS NOT REQUIRED

IF BUS IS SUFFICIENTLY LOADED

4300-1/2 TA01

sn430012 430012fs

12 3 4 5 6 7...16

中文翻译

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LTC4300-2CMS8#PBF 替代型号

型号	品牌	替代类型	描述	数据表
LTC4300-2CMS8#TRPBF	Linear	完全替代	LTC4300-1/LTC4300-2 - Hot Swappable 2-Wire Bus Buffers; Package: MSOP; Pins: 8; Temperatur
LTC4300-2IMS8#PBF	Linear	类似代替	暂无描述

与LTC4300-2CMS8#PBF相关器件

型号	品牌	获取价格	描述	数据表
LTC4300-2CMS8#TRPBF	Linear	获取价格	LTC4300-1/LTC4300-2 - Hot Swappable 2-Wire Bus Buffers; Package: MSOP; Pins: 8; Temperatur
LTC4300-2IMS8	Linear	获取价格	Hot Swappable 2-Wire Bus Buffers
LTC4300-2IMS8#PBF	Linear	获取价格	暂无描述
LTC4300-2IMS8#TR	Linear	获取价格	暂无描述
LTC4300A-1	Linear	获取价格	Hot Swappable 2-Wire Bus Buffers
LTC4300A-1	ADI	获取价格	可热插拔的两线式总线缓冲器
LTC4300A-1_15	Linear	获取价格	Hot Swappable 2-Wire Bus Buffers
LTC4300A-1CMS8	Linear	获取价格	Hot Swappable 2-Wire Bus Buffers
LTC4300A-1CMS8#PBF	Linear	获取价格	LTC4300A-1 - Hot Swappable 2-Wire Bus Buffers; Package: MSOP; Pins: 8; Temperature Range:
LTC4300A-1CMS8#TR	Linear	获取价格	LTC4300A-1 - Hot Swappable 2-Wire Bus Buffers; Package: MSOP; Pins: 8; Temperature Range:

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