The 74HC164N is a high-speed CMOS logic 8-stage serial shift register manufactured by HGSEMI. It is a dual-in-line integrated circuit (DIP) package with 14 pins. The registers are controlled by a serial data input (S1) and via a serial data output (Q7). It features a synchronous clear input (SH_Clr), two-stage gating for easy data entry, and enables cascading of 64 or fewer registers. The 74HC164N is lead-free and RoHS compliant, meaning it meets or exceeds the standards of the Restriction of Hazardous Substances Directive (RoHS). It is ideal for use in digital systems, timing and control applications.