| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | DM74LS157 |  160Kb/8P | Quad 2-Line to 1-Line Data Selectors/Multiplexers |
 National Semiconductor ... | DM74LS157E |  160Kb/8P | Quad 2-Line to 1-Line Data Selectors/Multiplexers |
| DM74LS157J |  160Kb/8P | Quad 2-Line to 1-Line Data Selectors/Multiplexers |
| DM74LS157M |  160Kb/8P | Quad 2-Line to 1-Line Data Selectors/Multiplexers |
 National Semiconductor ... | DM74LS157N |  160Kb/8P | Quad 2-Line to 1-Line Data Selectors/Multiplexers |
 National Semiconductor ... | DM74LS157W |  160Kb/8P | Quad 2-Line to 1-Line Data Selectors/Multiplexers |