The TMUX1119 can be operated without any external components except for the supply decoupling capacitors. All inputs passing through the switch must fall within the recommend operating conditions of the TMUX1119, including signal range and continuous current. For this design with a supply of 5V the signal range can be 0V to 5V, and the maximum continuous current can be 30mA.

The TMUX1119 device is a bidirectional, single-pole double-throw (SPDT) switch that offers low on-resistance, low leakage, and low power. These features make this device suitable for portable and power sensitive applications such as ultrasonic gas metering systems. The two TMUX1119 devices are used to switch the transmission and reception signals from the MCU to the two transceivers in an efficient manner without distortion. Exceptional on-resistance flatness, leakage performance, and charge injection allows the TMUX1119 to be utilized in place of the TS5A9411 in Ultrasonic Gas Meter Front-End With MSP430™ Reference Design. For a more detailed analysis of the entire system refer to the reference design.