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FEATURES

APPLICATIONS

DESCRIPTION

Digital TV

TMDS

442

STB

DVDPlayeror DVR

Game

Machine

HighDefinitionDVD Player

TMDS442

SLLS757A – AUGUST 2006 – REVISED MARCH 2007

4-TO-2 DVI/HDMI SWITCH

• TMDS Inputs HBM ESD Protection Exceeds 6

kV

• A 4-to-2 Single-Link or 2-to-1 Dual-Link

DVI/HDMI Physical Layer Switch

• 3.3-V Supply Operation

• Compatible with HDMI 1.3a

• 128-Pin TQFP Package

• Supports 2.25 Gbps Signaling Rate for 480i/p,

• ROHS Compatible and 260°C Reflow Rated

720i/p, and 1080i/p Resolutions up to 12-Bit

Color Depth

• Digital TV

• Integrated Receiver Terminations

• Digital Projector

• 8-dB Receiver Equalizer Compensates for

• Audio Video Receiver

Losses From Standard HDMI Cables

• DVI or HDMI Switch

• Selectable Output De-Emphasis Compensates

for Losses From Flat Cables

• High-Impedance Outputs When Disabled

Ends

The TMDS442, 4-to-2 port DVI/HDMI switch, allows up to 4 digital video interface (DVI) or high-definition

multimedia interface (HDMI) ports to be switched to two independent display blocks. The essential requirement

of picture-in-picture display from two digital audiovisual sources is having two individual DVI or HDMI receivers

in a digital display system. TMDS442 supports two DVI or HDMI receivers to enable multiple-source selection

(picture-in-picture), as well as supports acting as a 4-input 1-output video switch.

interface signals (SCL/SDA), and four TMDS channels supporting data rates up to 2.25 Gbps. The 5-V power

indicator and the hot plug detector are pulled down with internal resistors, forcing a low state on these pins until

form both ends of the buses. TMDS receivers integrate 50-

Ω termination resistors pulled up to V

eliminates the need for external terminations. An 8-dB input equalization cooperates to each TMDS receiver

inputs to optimize system performance through 5-meter or longer DVI or HDMI compliant cables.

TYPICAL APPLICATION

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2006–2007, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.