LTC4305是采用电容缓冲的两通道、二线式总线多路复用器

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LTC4305 - LTC4305是采用电容缓冲的两通道、二线式总线多路复用器

LTC4305是Linear公司的一款I2C 和 SMBus 总线缓冲器和加速器产品，LTC4305是采用电容缓冲的两通道、二线式总线多路复用器，本站介绍了LTC4305的封装应用图解、特点和优点、功能等，并给出了与LTC4305相关的凌力尔特元器件型号供参考。

LTC4305 - 采用电容缓冲的两通道、二线式总线多路复用器

LTC4305 - 采用电容缓冲的两通道、二线式总线多路复用器 - Linear Technology（凌力尔特）

功能描述

The LTC4305 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. Programmable timeout circuitry disconnects the downstream 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. The LTC4305 is available in 16-lead (4mm × 5mm) DFN and SSOP packages.

特点

1:2 2-Wire Multiplexer/Switch

Connect SDA and SCL Lines with 2-Wire BusCommands

Supply Independent Bidirectional Buffer for SDAand 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 BoardInsertion and Removal from Backplane

±10kV Human Body Model ESD Ruggedness

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

应用

Nested Addressing

5V/3.3V Level Translator

Capacitance Buffer/Bus Extender

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC4305CDHD	5x4 DFN-16	C	$4.07	$2.85
LTC4305CDHD#PBF	5x4 DFN-16	C	$4.07	$2.85
LTC4305CDHD#TR	5x4 DFN-16	C		$2.91
LTC4305CDHD#TRPBF	5x4 DFN-16	C		$2.91
LTC4305CGN	SSOP-16	C	$4.00	$2.80
LTC4305CGN#PBF	SSOP-16	C	$4.00	$2.80
LTC4305CGN#TR	SSOP-16	C		$2.86
LTC4305CGN#TRPBF	SSOP-16	C		$2.86
LTC4305IDHD	5x4 DFN-16	I	$4.86	$3.40
LTC4305IDHD#PBF	5x4 DFN-16	I	$4.86	$3.40
LTC4305IDHD#TR	5x4 DFN-16	I		$3.46
LTC4305IDHD#TRPBF	5x4 DFN-16	I		$3.46
LTC4305IGN	SSOP-16	I	$4.79	$3.35
LTC4305IGN#PBF	SSOP-16	I	$4.79	$3.35
LTC4305IGN#TR	SSOP-16	I		$3.41
LTC4305IGN#TRPBF	SSOP-16	I		$3.41