8-bits Serial-to-Parallel Converter
This kind of chip is used to transform serial data (like serial port) to parallel data (like data bus).
You may find the 74LS164 in the following applications:
- into RX circuitry of a serial link
- 8 additional outputs by using only 2 pins on the microcontroler.
The complementary circuit is the 74HC165 (parallele-to-serial).