What this 8-bit shift register does on your board
It takes eight parallel inputs and shifts them out serially, or cascades serial data through. The complementary outputs give you both true and inverted serial data without an extra inverter.
Through-hole DIP — field-swappable without a hot-air station
This comes in a 16-pin DIP (0.300" body, 7.62mm pitch) with through-hole leads. You can socket it — drop it into a 16-pin DIP socket and swap it on site with just a puller and a fresh part. No hot air, no reflow profile, no lab bench. The 16-PDIP supplier package code is the same footprint. If you are repairing a legacy board in a parking lot or a factory floor, this is the kind of part that goes in right the first time.
Texas Instruments still manufactures it, ROHS3 compliant.