9.2 Typical Application

A typical application of the TCA9546A contains anywhere from 1 to 5 separate data pull-up voltages, V_DPUX , one for the master device (V_DPUM) and one for each of the selectable slave channels (V_DPU0 – V_DPU3). In the event where the master device and all slave devices operate at the same voltage, then the pass voltage, V_pass = V_DPUX. Once the maximum V_pass is known, V_cc can be selected easily using Figure 16. In an application where voltage translation is necessary, additional design requirements must be considered (See Design Requirements).

Figure 15 shows an application in which the TCA9546A can be used.

Figure 15. TCA9546A Typical Application Schematic