HD3SS3411 Differential 2:1 MUX/Demux Texas Instruments HD3SS3411 Differential 2:1 MUX/Demux is a high-speed bi-directional passive switch in multiplexer or demultiplexer configurations. Based on control pin SEL, the device provides switching of differential channels between Port B to Port A or Port C to Port A. The HD3SS3411 is a generic analog differential passive switch that can work for any high-speed interface application. The application must be biased at a common mode voltage range of 0V to 2V and have differential signaling with differential amplitude up to 1800 mVpp. The device employs adaptive tracking that ensures the channel remains unchanged for entire common mode voltage range.