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74LCX16373MEA 데이터시트(PDF) 3 Page - Fairchild Semiconductor |
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74LCX16373MEA 데이터시트(HTML) 3 Page - Fairchild Semiconductor |
3 / 10 page 3 www.fairchildsemi.com Functional Description The LCX16373 contains sixteen D-type latches with 3-STATE standard 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 16-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 of LEn. The 3-STATE standard outputs are controlled by the Output Enable (OEn) input. When OEn is LOW, the standard out- puts are in the 2-state mode. When OEn is HIGH, the stan- dard 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. |
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