The Intersil HCS273MS is a Radiation Hardened octal D flip-flop, positive edge triggered, with reset. The HCS273MS utilizes advanced CMOS/SOS technology to achieve high-speed operation. This device is a member of radiation hardened, high-speed, CMOS/SOS Logic Family. The HCS273MS is supplied in a 20 lead Ceramic flatpack (K suffix) or a SBDIP Package (D suffix).