【产品】4:4或4:6交叉通道超高速差分信号MUX开关CH9444/5，支持USB 10Gbps信号

时间： 2022-07-21 来源：沁恒

技术问答

沁恒推出的4:4交叉通道超高速模拟开关芯片 CH9444和4:6交叉通道超高速USB模拟开关芯片 CH9445，是超高速差分信号双向模拟开关芯片，高宽带，低导通电阻。CH9444可以实现DP1.4 8Gbps、USB3.0、480Mbps等差分信号的交叉路由切换，用于平板电脑、笔记本电脑、拓展坞的Type-C转DP等应用。CH9445比CH9444多了两对差分信号引脚，增加了USB3.1通道，支持USB 10Gbps差分信号，可以用于Type-C转DP+USB3等应用。

内部框图

特点

● 4:4或者4:6交叉通道超高速差分信号MUX开关。

●支持USB 10Gbps信号。

●支持DP1.4 8Gbps信号。

●为CSBU和SBU引脚提供交叉开关电路。

●通过I2C两线接口控制和配置多路MUX切换。

●提供4个GPIO引脚，GPIO支持中断。

●支持低功耗模式。

●提供QFN32-4x4mm封装形式。

绝对最大值（临界或者超过绝对最大值将可能导致芯片工作不正常甚至损坏）

超高速通道电气参数（测试条件：TA=25℃，VCC=3.3V，VCM=0.3V）

低速通道电气参数（测试条件：TA=25℃，VCC=3.3V）

通道时序参数（测试条件：TA=25℃，VCC=3.3V，VCM=0.3V）

封装信息

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本文由FY转载自沁恒，原文标题为:CH9444 4:4 交叉通道超高速模拟开关芯片 / CH9445 4:6 交叉通道超高速 USB 模拟开关芯片，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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产品型号	品类	功能描述	典型供电（V）	典型内阻（Ω）	典型带宽（MHz）	信号电压（V）	封装	应用信号推荐
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