The TMUX1101 and TMUX1102 are 1:1 (SPST) switches. The TMUX110x devices have a controllable single-pole, single-throw switch that is turned on or off based on the state of the select pin. The switch of the TMUX1101 is turned on with a Logic 1 on the select pin, while a Logic 0 is required to turn on switch in the TMUX1102. The following figure shows the functional block diagram for the TMUX110x devices.