LTC4305

量产

采用电容缓冲的两通道、二线式总线多路复用器

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产品技术资料帮助

ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许，也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。
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概述

  • 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
    Insertion and Removal from Backplane
  • ±10kV Human Body Model ESD Ruggedness
  • 16-Lead (4mm × 5mm) DFN and SSOP Packages

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. 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.
Applications

  • Nested Addressing
  • 5V/3.3V Level Translator
  • Capacitance Buffer/Bus Extender
LTC4305
采用电容缓冲的两通道、二线式总线多路复用器
A Level-Shifting and Nested Addressing Application I 2C Bus Waveforms Product Package 1 Product Package 2
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参考资料

数据手册 1

可靠性数据 1

技术文章 1

规范通知 1

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软件资源

器件驱动器 1

硬件生态系统

部分模型 产品周期 描述
接口收发器和隔离器 1
LTM2883
量产 具可调 ±12.5V 和 5V 稳定电源的 SPI / 数字或 I2C μModule 隔离器
模拟开关与多路复用器 1
LTC4312
量产 具总线缓冲器的引脚可选、两通道、二线式多路复用器
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工具及仿真模型

IBIS 模型 2

LTpowerPlay®

LTpowerPlay®是一款功能强大且基于Windows的开发环境，支持凌力尔特的数字电源系统管理(PSM)产品。

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