Board-level signal routing with the 4:1 mux/demux
The SN74CBT3257PWR is a 4 x 2:1 multiplexer/demultiplexer from the 74CBT family, routing one of two data sources to a common output across four independent channels.
Supply and temperature range for the BOM
The single-supply 4.5V to 5.5V input means no separate analog rail is needed; the mux switches signals within that same supply window. Packaged in 16-TSSOP (4.40 mm width), the 0.65 mm pin pitch routes cleanly on a two-layer board with standard trace widths. The surface-mount footprint is shared across many 74CBT logic devices, so a single PCB pad pattern can serve multiple BOM variants.