TI INTRODUCES TWO INNOVATIVE SWITCHES FOR DIGITAL VIDEO AND HIGH-DEFINITION MULTIMEDIA INTERFACE APPLICATIONS
Industry-First Devices Replace Multiple Switches, Saving System Space and Cost
DALLAS Texas Instruments (TI) (NYSE: TXN) today introduced two new video switches for digital video interface (DVI) or high-definition multimedia interface (HDMI). The new offering includes the industry's only switch that allows designers to switch as many as three ports to a single display terminal, as well as a first-to-market single-chip, five-channel solution for two-to-one video switching applications. Both switches save board space and overall system cost in digital televisions, audio/video receivers, and keyboard, video and mouse switches. (See www.ti.com/sc05242.)
Providing signal conditioning and switching, the TMDS341 is a three-port device that supports four Transition Minimized Differential Signaling (TMDS) channels, one hot plug detector and an I2C interface on each port. Each TMDS channel allows signaling rates up to 1.65 Gbps. The TMDS341 provides fixed, 8-dB input equalization and selectable, 3-dB output de-emphasis to optimize system performance through 5-m or longer DVI-compliant cables.
The TS3DV520 is a five-channel differential, 2:1 multiplexer/demultiplexer digital video switch. This device converts one DVI or HDMI input port into two high-speed ports. A wide bandwidth of 2.4 Gbps allows each channel to pass 1.65-Gbps TMDS signals common to the DVI/HDMI application. The TS3DV520 can be controlled by one select input, which allows the user to easily integrate this device into video applications where signals need to be switched or rerouted between two sources and one receiver.
TMDS341 Additional Features
TS3DV520 Key Features
- 3:1 DVI/HDMI Switch
- Isolated digital display control (DDC) bus for unused ports
- 5-V tolerance to all DDC and HPD_SINK Inputs
- Integrated receiver termination
- Inter-Pair Output Skew < 200 ps
- High Impedance Outputs When Disabled
- Electrostatic discharge protection exceeds 3 kV (human body model)
- 3.3-V supply operation
- 2:1, five-channel differential Mux switch for DVI/HDMI
- Wide Bandwidth: 1.2 Ghz typical, 2.4 Gbps
- Low Crosstalk: -27 dB typical
- Low bit-to-bit skew: 0.2 ns maximum
- Low and flat ON-state resistance: low = 4 W maximum, flat = 0.7 W typical
- Low input/output capacitance: 10 pF typical
The TMDS341 is available today from TI and authorized distributors in an 80-pin thin quad flat package (TQFP) priced at $3.50 in 1,000-unit quantities. The TS3DV520 is sampling in a 56-pin quad flat, no-lead package (QFN) priced at $2.30 each in 1,000 unit quantities.
In addition to the TMDS341 and TS3DV520, TI offers a full portfolio of video interface devices including the PanelBus products for DVI applications. Please see TI's Interface Selection Guide at interface.ti.com for more information.