SCPS206B March 2014 – November 2019 TCA9543A
PRODUCTION DATA.
A typical application of the TCA9543A contains anywhere from 1 to 3 separate data pull-up voltages, VDPUX , one for the master device (VDPUM) and one for each of the selectable slave channels (VDPU0 and VDPU1). In the event where the master device and both slave devices operate at the same voltage, then the pass voltage, Vpass = VDPUX. Once the maximum Vpass is known, Vcc 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.