74 Series digital circuit of 74LS299, 74S299 8-bit bidirectional universal shift/storage registers

Published:2011/8/2 4:36:00 Author:Lucas | Keyword: 74 Series , digital circuit , 8-bit bidirectional, universal shift, storage registers | From:SeekIC

It has multi-road / output lines and four modes to maintain (store) left, right shift and output number; three-state outputs can directly drive the bus; 74LS323 is similar to the circuit, but it has the synchronous clear function. When one or two output controlling is high, eight input / output ends against in high-impedance state, but the timing register and cleaning functions are not affected. The data is input to each trigger when the flip-flop output and input ends are isolated. QA10~QH0 is the level of QA~QH before the establishment of steady-state input conditions. QAn~QHn=the level of QA~QH before the latest time hopping.



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