he 74HC/HCT4514 are 4-to-16 linedecoders/demultiplexers having four binary weightedaddress inputs (A0to A3), with latches, a latch enable input(LE), and an active LOW enable input (E). The 16 outputs(Q0to Q15) are mutually exclusive active HIGH. When LEis HIGH, the selected output is determined by the data onAn. When LE goes LOW, the last data present at Anarestored in the latches and the outputs remain stable. WhenE is LOW, the selected output, determined by the contentsof the latch, is HIGH. AtE HIGH, all outputs are LOW. Theenable input (E) does not affect the state of the latch.
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