1.概述
LT8641SXE是一个最小化转换差分信号（TMDS）开关，能够将多个高清多媒体接口（HDMI）源设备连接到高清电视（HDTV）。LT8641SXE基于HDMI 1.4规范，是一种高级TMDS开关，为制造商提供了一种经济高效的方法，可以在其HDTV中添加其他HDMI端口。多个HDMI端口允许消费者将各种支持HDMI的信号源连接到其HDTV。它支持HDCP 1.4规格和音频回传通道功能。

LT8641SXE是一款四对一（4：1）开关，非常适合在HDTV和A / V接收器的背面板上使用，从而使消费者可以连接多个具有HDMI功能的设备，例如高清DVD播放器，机顶盒。盒和游戏机。LT8641SXE开关从四个接收器端口中选择一个HDMI或数字视频接口（DVI）信号，并生成HDMI / DVI音频/视频输出以及DDC / HPD切换，完全符合HDMI和DVI规范。LT8641SXE还用作HDMI接收器。它从HDMI数据包中提取数字音频信息，并将数字音频恢复到I2S / SPDIF接口。因此可以将其应用于多声道音频放大器以获得最佳音频效果。

2.功能
•4输入1输出HDMI2.0链路
•兼容HDMI1.4和HDCP1.4 
•HDMI输入分辨率高达4Kx2K @ 30Hz 
•HDMI输出分辨率高达4Kx2K @ 30Hz 
•音频输出支持8通道I2S音频输出或6通道I2S和SPDIF都
支持•支持3D格式
•支持CEC 
•支持HDMI链接上的一个通道ARC功能。

3.应用图
•嵌入式电视开关
•外部HDMI开关
•数字音频放大器

1. General Description
The LT8641SXE is a Transition Minimized Differential Signaling (TMDS) switch that enables the connection of multiple High-Definition Multimedia Interface (HDMI) source devices to high-definition television (HDTV). Based on the HDMI 1.4 specification, LT8641SXE is an advanced TMDS switch that delivers a cost-effective method for manufacturers to add additional HDMI ports to their HDTV. Multiple HDMI ports allow consumers to connect variety HDMI-enabled sources to their HDTV. It supports HDCP 1.4 specifications, and Audio Return Channel function.

The LT8641SXE is a four-to-one (4:1) switch ideally suited for use in the back panel of HDTV and A/V receivers, allowing consumers to connect multiple HDMI-enabled devices such as high-definition DVD players, set top boxes and game consoles. The LT8641SXE switch selects a single HDMI or Digital Visual Interface (DVI) signal from the four receiver ports and generates HDMI/DVI audio/video output, as well as DDC/HPD switching, in full compliance with the HDMI and DVI specifications. The LT8641SXE also acts as a HDMI receiver. It extracts the digital audio information from the HDMI packet, and recovers digital audio to I2S/SPDIF interface. So it can be applied to the multi-channel audio amplifier for best audio effect. This feature can enable an external HDMI switching box acts as a home entertainment box that can output up to 8-channel high quality audio signal for the best audio effect.

2. Features
• 4 inputs, 1output HDMI2.0 links
• Compliant with HDMI1.4 and HDCP1.4
• HDMI input resolution up to 4Kx2K@30Hz
• HDMI output resolution up to 4Kx2K@30Hz
• Audio output support 8 channel I2S audio outputs or both 6 channel I2S and SPDIF
• Supports 3D format
• Supports CEC
• Supports one channel ARC function on HDMI link.

3.  Application Diagram
• Embedded TV Switch
• External HDMI Switch
• Digital Audio Amplifier
• Etc.

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上一产品展示：LT8641UX HDMI2.0 Switch features a 4:1

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