The MC74AC157/74ACT157 is a high-speed quad 2-input multiplexer. Four bits of data from two sources can be selected using the common Select and Enable inputs. The four outputs present the selected data in the true (noninverted) form. The MC74AC157/74ACT157 can also be used as a function generator.
The document describes the MC74AC157/MC74ACT157 as a high-speed quad 2-input multiplexer capable of selecting four bits of data from two sources using common Select and Enable inputs. It features TTL-compatible inputs for the ACT variant and is available in various leaded and surface-mount packages including PDIP, SOIC, TSSOP, and EIAJ.
| Outputs Source/Sink Current | 24 mA |
|---|---|
| Operating Ambient Temperature | -40 to +85 °C |
The Enable input (E) is active-LOW; when E is HIGH, all outputs are forced LOW regardless of other inputs.
Yes, it can generate any four of the sixteen different functions of two variables with one variable common.