PCIe (Peripheral Component Interconnect Express) is a high-speed communication protocol used to interface between a system processor and other components such as GPUs, SSDs and SmartNICs. The PCIe protocol divides its signal lanes into differential pairs for transmitting and receiving data. A single PCIe lane consists of four wires split into two pairs, ±TX (transmit pair) and ±RX (receive pair). For PCIe signaling, an ideal mux is a 1:2 or 2:1 configuration with a high rated bandwidth for better signal performance.

The mux portfolio has devices designed to support up to PCIe Gen 5 with the recent development of the TMUXHS5212.