| Компонент | Описание | Производитель | |
| DM74LS139M | Decoder/Demultiplexer |
Fairchild Semiconductor |
|
| DM74LS139M | Decoders/Demultiplexers |
National Semiconductor |
|
| DM74LS139MX | Dual 2-to-4 Line Decoder/Demultiplexer |
Fairchild Semiconductor |