9.2 Typical Application

A typical application of the TCA9543A contains anywhere from 1 to 3 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 and V_DPU1). In the event where the master device and both 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 17. In an application where voltage translation is necessary, additional design requirements must be considered (See Design Requirements).

Figure 16 shows an application in which the TCA9543A can be used.

Figure 16. Typical Application Schematic