HD74LS194A
HD74LS194A is 4-bit Bidirectional Universal Shift Register manufactured by Renesas.
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 leftshift serial inputs. Operating-mode-control inputs, and a direct overriding clear line. The register has four distinct modes of operation, namely;
- Parallel (broadside) load
- Shift right (in the direction QA toward QD)
- Shift left (in the direction QD toward QA)
- Inhibit clock (do nothing)
Synchronous parallel loading is acplished 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. During loading, serial data flow is inhibited. Shift right is acplished synchronously...
