The MC14034B is a bidirectional 8–bit static parallel/serial, input/output bus register. The device contains two sets of input/output lines which allows the bidirectional transfer of data between two buses; the conversion of serial data to parallel form, or the conversion of parallel data to serial form. Additionally the serial data input allows data to be entered shift/right, while shift/left can be accomplished by hard–wiring each parallel output to the previous parallel bit input.

Other useful applications for this device include pseudo–random code generation, sample and hold register, frequency and phase–comparator, address or buffer register, and serial/parallel input/output conversions.

• Bidirectional Parallel Data Input

• Diode Protection on All Inputs

• Supply Voltage Range = 3.0 Vdc to 18 Vdc

• Capable of Driving Two Low–power TTL Loads or One Low–power Schottky TTL Load Over the Rated Temperature Range.

 • Pin–for–Pin Replacement for CD4034B.