DM74LS240WM и другие
| Компонент | Описание | Производитель | |
| DM74LS240WM | Octal 3-STATE Buffer/Line Driver/Line Receiver |
Fairchild Semiconductor |
 |
| DM74LS240WM | Octal TRI-STATE Buffers/Line Drivers/Line Receivers |
National Semiconductor |
|
| DM74LS240WMX | Octal 3-STATE Buffer/Line Driver/Line Receiver (Inverting) |
Fairchild Semiconductor |
|