| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | DM74LS157N |  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 |
 National Semiconductor ... | DM74LS157M |  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 |
| DM74LS151 |  140Kb/6P | Data Selector/Multiplexer |
 National Semiconductor ... | DM74LS151E |  140Kb/6P | Data Selector/Multiplexer |
| DM74LS151J |  140Kb/6P | Data Selector/Multiplexer |
| DM74LS151M |  140Kb/6P | Data Selector/Multiplexer |
 National Semiconductor ... | DM74LS151N |  140Kb/6P | Data Selector/Multiplexer |
 National Semiconductor ... | DM74LS151W |  140Kb/6P | Data Selector/Multiplexer |
| DM74LS153 |  142Kb/6P | Dual 4-Line to 1-Line Data Selectors/Multiplexers |