The MC14021BCP 8-bit static shift register is constructed with MOS P-channel and N-channel enhancement mode devices in a single monolithic structure. These shift registers find primary use in parallel-to-serial data conversion, synchronous and asynchronous parallel input, serial output data queueing; and other general purpose register applications requiring low power and/or high noise immunity. Features:Asynchronous Parallel Input/Serial OutputSynchronous Serial Input/Serial OutputFull Static Operation"Q" Outputs from Sixth, Seventh, and Eighth StagesDouble Diode Input ProtectionSupply Voltage Range = 3.0 Vdc to 18 VdcCapable of Driving Two Low-power TTL Loads or One Low-power Schottky TTL Load Over the Rated Temperature RangePin-for-Pin Replacement for CD4021B16 pin DIP. Manufactured by Motorola. A20537. Sold in a package of 25. Additional Resources Datasheet - Adobe PDF