资 源 简 介
These data selectors/multiplexers contain full on-chip decodingto select the desired data source. The 150 selectsone-of-sixteen data sources; the 151A selects one-of-eightdata sources. The 150 and 151A have a strobe input whichmust be at a low logic level to enable these devices. A highlevel at the strobe forces the W output high and the Y output(as applicable) low.The 151A features complementary W and Y outputs,whereas the 150 has an inverted (W) output only.The 151A incorporates address buffers which have symmetricalpropagation delay times through the complementarypaths. This reduces the possibility of transients occurring atthe output(s) due to changes made at the select inputs, evenwhen the 151A outputs are enabled (i.e., strobe low).
