LTC4305

更新时间： 2024-09-24 05:43:59

品牌	Logo	应用领域
凌特 - Linear		复用器
页数	文件大小	规格书
20页	242K
描述
2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering

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LTC4305 数据手册

LTC4305

2-Channel,

2-Wire Bus Multiplexer with

Capacitance Buffering

FEATURES

DESCRIPTIO

The LTC^®4305 is a 2-channel, 2-wire bus multiplexer with

bus buffers to provide capacitive isolation between the

upstream bus and downstream buses. Through software

control, the LTC4305 connects the upstream 2-wire bus

to any desired combination of downstream channels.

Each channel can be pulled up to a supply voltage ranging

from 2.2V to 5.5V, independent of the LTC4305 supply

voltage. The downstream channels are also provided with

an ALERT1–ALERT2 inputs for fault reporting.

■

1:2 2-Wire Multiplexer/Switch

■

Connect SDA and SCL Lines with 2-Wire Bus

Commands

■

Supply Independent Bidirectional Buffer for SDA

and SCL Lines Increases Fan-Out

■

Programmable Disconnect from Stuck Bus

Compatible with I²C and SMBus Standards

■

Rise Time Accelerator Circuitry

■

SMBus Compatible ALERT Response Protocol

■

Prevents SDA and SCL Corruption During Live Board

Programmable timeout circuitry disconnects the down-

stream buses if the bus is stuck low. When activated, rise

time accelerators source currents into the 2-wire bus pins

to reduce rise time. Driving the ENABLE pin low restores

all features to their default states. Three address pins

provide 27 distinct addresses.

Insertion and Removal from Backplane

■

±10kV Human Body Model ESD Ruggedness

■

16-Lead (4mm × 5mm) DFN and SSOP Packages

APPLICATIO S

The LTC4305 is available in 16-lead (4mm × 5mm) DFN

■

Nested Addressing

and SSOP packages.

■

5V/3.3V Level Translator

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

trademarks are the property of their respective owners. Patent Pending.

■

Capacitance Buffer/Bus Extender

TYPICAL APPLICATIO

A Level-Shifting and Nested Addressing Application

I C Bus Waveforms

2.5V

3.3V

= 3.3V

0.01µF

VBACK = 2.5V

10k 10k 10k

10k

SCLIN

2V/DIV

SCL1

SDA1

SCLIN

MICRO-

CONTROLLER

SFP

MODULE #1

VCARD1 = 3.3V

SDAIN

ALERT

SCL1

2V/DIV

ALERT1

ADDRESS = 1111 000

LTC4305

ADR2

VCARD2 = 5V

SCL2

2V/DIV

10k

ADR1

ADR0

GND

SCL2

SDA2

SFP

MODULE #2

4305 TA01b

500ns/DIV

ALERT2

4305 TA01

ADDRESS = 1111 000

ADDRESS = 1000 100

4305f

12 3 4 5 6 7...20

中文翻译

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与LTC4305相关器件

型号	品牌	获取价格	描述	数据表
LTC4305CDHD	Linear	获取价格	2-Channel, 2-Wire Bus Multiplexer with
LTC4305CDHD#TRPBF	Linear	获取价格	LTC4305 - 2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering; Package: DFN; Pins
LTC4305CGN	Linear	获取价格	LTC4305 - 2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering; Package: SSOP; Pin
LTC4305CGN#PBF	Linear	获取价格	LTC4305 - 2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering; Package: SSOP; Pin
LTC4305CGN#TR	Linear	获取价格	LTC4305 - 2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering; Package: SSOP; Pin
LTC4305CGN#TRPBF	Linear	获取价格	暂无描述
LTC4305IDHD	Linear	获取价格	2-Channel, 2-Wire Bus Multiplexer with
LTC4305IDHD#PBF	Linear	获取价格	LTC4305 - 2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering; Package: DFN; Pins
LTC4305IDHD#TR	Linear	获取价格	LTC4305 - 2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering; Package: DFN; Pins
LTC4305IDHD#TRPBF	Linear	获取价格	LTC4305 - 2-Channel, 2-Wire Bus Multiplexer with Capacitance Buffering; Package: DFN; Pins

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