HEF4515B

The HEF4514B is a 1-of-16 decoder/demultiplexer, having four binary weighted address inputs (A₀ to A₃), a latch enable input (EL), and an active LOW enable input (E). The 16 outputs (O₀ to O₁₅) are mutually exclusive active HIGH. When EL is HIGH, the selected output is determined by the data on A_n. When EL goes LOW, the last data present at An are stored in the latches and the outputs remain stable. When E is LOW, the selected output, determined by the contents of the latch, is HIGH. At E HIGH, all outputs are LOW. The enable input (E) does not affect the state of the latch. When the HEF4514B is used as a demultiplexer,E is the data input and A₀ to A₃ are the address inputs.