The SN74HCS157 contains four data selectors/multiplexers to select one of two data sources. All channels are controlled by the same address select (A/B) input, and strobe (G) input. A high level at the strobe terminal forces all outputs low.
| Technology family | HCS |
| Function | Multiplexer |
| Configuration | 2 |
| Number of channels | 4 |
| Operating temperature range (°C) | -40 to 125 |
| Rating | Catalog |
| SOIC (D) | 16 | 59.4 mm² 9.9 x 6 |
| TSSOP (PW) | 16 | 32 mm² 5 x 6.4 |