The Intersil HCS164MS is a radiation hardened 8-bit serial-in/parallel-out shift register that has fully synchronous serial data entry and an asynchronous master reset. The HCS164MS utilizes advanced CMOS/SOS technology to achieve high-speed operation. This device is a member of the radiation hardened, high-speed, CMOS/SOS logic family. The HCS164MS is supplied in a 14-lead ceramic flatpack (K suffix) or an SBDIP package (D suffix).