Fast 10-line-to-one-line data selector/multiplexer comprises only two ICs

摘要

When dealing with logic operations over BCD (binary-coded-decimal) numbers, you often need a 10-line-to-one-line data selector/multiplexer. In the past, you could use the famous 16-line-to-one-line 74150 multiplexer IC. Nowadays, however, when you look at the Web sites of the renowned semiconductor houses for the 150 and similar 16-to-one multiplexers, such as the 250, the 850, or the 851, you find that vendors have labeled them obsolete or no longer available. On the other hand, the eight-line-to-one-line multiplexers not only have survived but also are parts of advanced logic families, such as HC (high-speed CMOS) and AC (advanced CMOS).