The 74HC/HCT4515 is a high-speed 4-to-16 line decoder/demultiplexer with input latches and inverting outputs.
The Philips Semiconductors 74HC/HCT4515 is a high-speed Si-gate CMOS device designed as a 4-to-16 line decoder or demultiplexer. It features four binary weighted address inputs (A0 to A3) with latches, a latch enable input (LE), and an active LOW enable input (E). The device provides sixteen mutually exclusive active LOW outputs (Q0 to Q15).
When the latch enable input is HIGH, the selected output is determined by the data on the address inputs. When LE goes LOW, the last data present at the address inputs are stored in the latches, and the outputs remain stable regardless of changes to the address inputs. The active LOW enable input (E) controls the state of these outputs: when E is LOW, the selected output determined by the latch contents becomes LOW; when E is HIGH, all outputs go HIGH.
| Input capacitance | 3.5 pF |
|---|---|
| Power dissipation capacitance per package (HC) | 44 pF |
| Operating temperature range (74HC) | -40 to +85 °C |
| Output capability | standard |
When LE is HIGH, the selected output is determined by the data on the address inputs. When LE goes LOW, the last data present at the address inputs are stored in the latches.
When E is LOW, the selected output, which is determined by the contents of the latch, becomes LOW.
Yes, the 16 outputs are mutually exclusive active LOW.