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FEATURES

APPLICATIONS

DESCRIPTION

TMDS

141

Interface

Unit

Audiovisual

Processing

Unit

HDMI

Rx

Digital TV

TMDS141

SLLS737C – JUNE 2006 – REVISED JUNE 2007

HDMI HIDER

• 3.3-V Supply Operation

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

• 40-Pin QFN Package (RHA)

720i/p, and 1080i/p Resolution to 12-Bit Color

• ROHS Compatible and 260°C Reflow Rated

Depth

• Accepts AC Couple DisplayPort Dual-Mode

• Compatible with HDMI 1.3a

Signals and Translates Them into a HDMI1.3a

• Integrated Receiver Termination

Compatable TMDS Signal

• 8-dB Equalizer Compensates Losses from 5-m

or Longer HDMI Cables

• Digital TV

• Selectable Output De-Emphasis Supports 1-m

• DVD Player

HDMI Transmission

• Set-Top-Box

• Audio Video Receiver

Both Ends

• Digital Projector

• High Impedance Outputs When Disabled

• DVI or HDMI cable

• TMDS Inputs HBM ESD Protection Exceeds

• DisplayPort Level Translator

6 kV

The TMDS141 HDMI hider is designed to accommodate a 1-m HDMI cable between a HDMI connector and a

receiver. The internal cable causes signal distortion to high-speed TMDS signals, as well as increasing

capacitance to the DDC channel. Each TMDS141 contains four TMDS repeaters to transmit digital content with

operations.

The device includes four TMDS compliant differential receivers with 50-

Ω termination resistors and 3.3-V

termination voltage integrated at each receiver input pin. External terminations are not required. A built-in

frequency response equalization circuit, 8 dB at 825 MHz, compensates inter-symbol interference (ISI) losses

from a 5-m or longer input cable link.

The device also includes four TMDS compliant differential drivers. A precision resistor is connected externally

from the VSADJ pin to ground for setting the differential output voltage to be compliant with the TMDS standard.

A selectable de-emphasis circuit is available via the PRE input to drive long PCB traces or cables. When PRE is

high, the 3.5-dB high frequency gain offsets the losses due to the FR4 trace. PRE can be left open or kept low

when the de-emphasis function is not desired.

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.

I2C is a trademark of Philips Electronics.

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.