The 74HC165D.652 is a 8-bit parallel-in-serial-out shift register from NXP, a Dutch semiconductor company. It operates from 2V to 6V and effectively converts 8-bit parallel input data into serial data. It is used in a wide range of applications including data conversion and communication, control, automotive and power supplies. The 74HC165D.652 has an 8-bit register, Set/Reset Pins, an asynchronous parallel input terminal, a serial output terminal, and an active-low enable terminal. It is also RoHS compliant and suitable for a variety of temperature conditions, making it an ideal choice for many designs.