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74VCX32373 Arkusz danych(PDF) 3 Page - Fairchild Semiconductor |
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74VCX32373 Arkusz danych(HTML) 3 Page - Fairchild Semiconductor |
3 / 8 page Preliminary 3 www.fairchildsemi.com Functional Description The 74VCX32373 contains thirty-two edge D-type latches with 3-STATE outputs. The device is byte controlled with each byte functioning identically, but independent of the other. Control pins can be shorted together to obtain full 32-bit operation. The following description applies to each byte. When the Latch Enable (LEn) input is HIGH, data on the In enters the latches. In this condition the latches are transparent, i.e., a latch output will change state each time its I input changes. When LEn is LOW, the latches store information that was present on the I inputs a setup time preceding the HIGH-to-LOW transition on LEn. The 3- STATE outputs are controlled by the Output Enable (OEn) input. When OEn is LOW the standard outputs are in the 2- state mode. When OEn is HIGH, the standard outputs are in the high impedance mode but this does not interfere with entering new data into the latches. Logic Diagrams Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. |
Podobny numer części - 74VCX32373 |
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Podobny opis - 74VCX32373 |
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