The Texas Instruments SN74HC257DT is a 74HC-series CMOS multiplexer configured as four independent 2:1 selector circuits, each routing one of two data inputs to a common output. It operates from a single 2V to 6V supply, which means it can sit on a 5V or 3.3V logic bus without a level translator.
ROHS3 compliant per the listing, which keeps it clear of the EU RoHS exemption phase-outs. For a 74HC logic part that has been in production for decades, active status means TI still runs it through its standard wafer fabs and assembly lines — you are not chasing surplus stock.
5V supply compatibility — yes, and 3.3V too
The 2V to 6V supply range covers 5V logic operation directly. At 5V VCC, the HC family input thresholds accept standard 5V CMOS and TTL levels.