What this 74HC bidirectional shift register does for your design
The Texas Instruments CD74HC194PWR is a 4-bit bidirectional universal shift register from the 74HC family. It handles parallel-to-serial and serial-to-parallel data conversion with left/right shift and parallel load capability, all in a push-pull output stage.
Supply voltage and temperature — the two specs that decide fit
The 2V to 6V supply range is the headline selector. If your board runs a 3.3V rail, this part works without a regulator swap; if you are on a 5V legacy bus, it sits right in the middle. No derating needed for cold-crank or engine-bay heat soak.
It comes in a 16-TSSOP body (0.173-inch wide, 4.40 mm) for surface-mount assembly. No thermal pad to worry about — the push-pull outputs keep static dissipation low.