LT8611EXA/B数据手册Lontium中文资料规格书

描述 Description

LT8611EX integrates 1-to-1 DP Repeater & HDMI/DVI Level Shifter to simplify system level design and reduce system level cost for applications requiring single DP or HDMI/DVI input and single output device in personal computing system and other emerging digital appliances.

LT8611EX can be configured either as a DP source repeater or as a HDMI/DVI source level shifter by MODE pin. When used as a DP repeater, it repeats four lanes of low-swing AC-coupled differential input signals to a DP receiver, without level shifting, to increase transmission distance. When used as a HDMI/DVI level shifter (default setting), it converts four lanes of low-swing AC-coupled differential input signals to DVI and HDMI compliant open-drain current-mode differential output signals. Each of these lanes provides a level-shifting differential buffer to translate from low-swing AC-coupled differential signaling on the source side, to TMDS-type DC-coupled differential current-mode signaling terminated into 50Ω to 3.3 V on the sink side.

The LT8611EX provides a single-ended active inverting buffer for voltage translation of the HPD signal from 5 V on the sink side to 3.3 V on the source side.  And, it provides a channel for level shifting of the DDC channel between 3.3 V source-side and 5 V sink-side. The chip also integrates a DDC buffer, defined by VESA DisplayPort Interoperability Guideline, for correct operation when connected to a dual mode DisplayPort source device.

LT8611EX is powered from a single 3.3 V power supply consuming a small amount of power and is offered in 2 types of package.

特性 Features

• Display Port Repeating
• HDMI V1.4/DVI V1.0 Level Shifting
• DDC Level Shifting
• DDC Buffer Support
• HPD Level Shifting

应用 Application

• PC Motherboard / Graphics Card
• DP to HDMI/DVI Cable Adaptor
• Digital Set-Top-Box
• 1-to-1 DP Repeater