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3-TO-1 DVI/HDMI Switch (Rev. B)
Texas Instruments
Description
The TMDS341A is a 3-port digital video interface (DVI) or high-definition multimedia interface (HDMI) switch that allows up to 3 DVI or HDMI ports to be switched to a single display terminal. Four TMDS channels, one hot plug detector, and an I2C interface are supported on each port. Each TMDS channel allows signaling rates up to 2.25 Gbps. The active source is selected by configuring source selectors, S1, S2, and S3. The selected TMDS inputs from each port are switched through a 3-to-1 multiplexer. The I2C interface of the selected input port is linked to the I2C interface of the output port, and the hot plug detector (HPD) of the selected input port is output to HPD_SINK. For the unused ports, the I2C interfaces are isolated, and the HPD pins are kept low. Termination resistors (50-), pulled up to VCC, are integrated at each receiver input pin. External terminations are not required. 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. When the output is connected to a standard TMDS termination and OE
Features
Compatible with HDMI 1.3aSupports 2.25 Gbps Signaling Rate for 480i/p, 720i/p, and 1080i/p Resolutions up to 12-Bit Color DepthEach Port Supports HDMI or DVI InputsIsolated Digital Display Control (DDC) Bus for Unused Ports5-V Tolerance to all DDC and HPD_SINK InputsIntegrated Receiver TerminationInter-Pair Output Skew < 100 psIntra-Pair Skew < 50 ps8-dB Receiver Equalization to Compensate for 5-m DVI Cable LossesHigh Impedance Outputs When DisabledTMDS Inputs HBM ESD Protection Exceeds 5 kV3.3-V Supply Operation80-Pin TQFP PackageROHS Compatible and 260°C Reflow RatedAPPLICATIONSSwitching From Three Digital-Video (DVI) or Digital-Audio Visual (HDMI) SourcesDigital TVDigital ProjectorAudio Video Receiver
Related Datasheets
| Part Number | Description | Category |
| • TMDS141 | HDMI Hider (Rev. C) | EDA - Embedded Systems Design |
| • TMDS341 | 3-to1 DVI/DMI Switch (Rev. B) | EDA - Embedded Systems Design |
| • TMDS351 | 2.5 Gbps 3-to-1 DVI/HDMI Switch (Rev. A) | EDA - Embedded Systems Design |
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