74 Series digital circuit of 74195,74LS195A 4-bit parallel access shift register

Published:2011/8/1 0:56:00 Author:Lucas | Keyword: 74 Series, digital circuit , 4-bit parallel access , shift register | From:SeekIC

The typical maximum clock frequency of 74195,74 LS195A is 39MHz, and 74S195 is 105MHz; the typical operating frequency of 74HC195 is 45Hz. a, b, c, d = the corresponding steady input level of A, B, C, D. QA0, QB0, QC0, QD0= the corresponding level of QA, QB, QC, QD before the establishment of steady-state input conditions. QAn, QBn, QCn= the corresponding level of QA, QB, QC at the latest time hopping.



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