The UART MUX Click Board™ switches the UART pins (RX and TX) from the mikroBUS™ to one of the four available outputs. It employs the SN74LV4052A, a Dual 4-Channel Multiplexer and Demultiplexer from Texas Instruments. It is designed for 2-V to 5.5-V VCC operation. Some of the typical applications for the SN74LV4052A include signal gating, chopping, modulation or demodulation (modem), and signal multiplexing for analogue-to-digital and digital-to-analogue conversion systems, which makes it ideal for multiplexing the UART pins from the mikroBUS™ to the multiple outputs.