SCPS209C May 2014 – November 2019 TCA9544A
A typical application of the TCA9544A contains anywhere from 1 to 5 separate data pull-up voltages, VDPUX , one for the master device (VDPUM) and one for each of the selectable slave channels (VDPU0 – VDPU3). In the event where the master device and all slave devices operate at the same voltage, then the supply voltage can be VCC = VDPUX. 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 TCA9544A can be used.