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HD74AC194
4-bit Bidirectional Unviersal Shift Register
REJ03D0259–0200Z (Previous ADE-205-379 (Z))
Rev.2.00 Jul.16.2004
Description
This bidirectional shift register is designed to incorporate virtually all of the features a system designer may want in a shift register. It 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 destinct modes of operation: parallel (broadside) load, shift right (in the direction Q0 toward Q3); shift left; inhibit clock (do nothing).
Synchronous parallel loading is accomplished by applying the four bits of data and taking both mode control inputs, S0 and S1, high.