SN54194,SN54LS194A,SN54S194,SN

These bidirecTIonal shift registers are designed to incorporate virtually all of the features a system designer may want in a shift register. The circuit contains 46 equivalent gates and features parallel inputs, parallel outputs, right-shift and left-shift serial inputs, operaTIng-mode-control inputs, and a direct overriding clear line. The register has four disTInct modes of operaTIon, namely:

Synchronous parallel loading is accomplished by applying the four bits of data and taking both mode control inputs, S0 and S1, high. The data are loaded into the associated flip-flops and appear at the outputs after the positive transition of the clock input.