The TMUXHS4412 is a analog passive mux/demux that can work for any high-speed interface as long as the signaling is differential, has a common-mode voltage (CMV) that is within valid range (0V to 1.8V for 3.3V supply voltage mode), and has amplitude up to 1800mVpp-differential. The device has adaptive input voltage tracking to help users ensure the channel remains unchanged for the entire common-mode voltage range. Two channels of the device can be used for electrical signals that have different CMV between them. Two channels can also be used in such a way that the device switches two different interface signals with different data and electrical characteristics.

Excellent dynamic characteristics of the device allow high speed switching with minimum attenuation to the signal eye diagram with very little added jitter. While the device is recommended for the interfaces up to 20Gbps, actual data rate where the device can be used highly depends on the electrical channels. For low loss channels where adequate margin is maintained the device can potentially be used for higher data rates.

The TMUXHS4412 is only recommended for differential signaling. If the two signals on differential lines are completely uncorrelated, then internal circuits can create certain artifacts. TI recommends to analyze the data line biasing of the device for such single-ended use cases. The device parameters are characterized for differential signaling only.