| No. | Nome della parte | Descrizione | Fabbricatore |
| 372801 | DM74LS253N | Dati Di tre stati Selectors/Multiplexers | National Semiconductor |
| 372802 | DM74LS256 | Fermo Accessibile Doppio 4-Bit | National Semiconductor |
| 372803 | DM74LS256N | Fermo Accessibile Doppio 4-Bit | National Semiconductor |
| 372804 | DM74LS256N | Fermo Accessibile Doppio 4-Bit | National Semiconductor |
| 372805 | DM74LS256N | Fermo Accessibile Doppio 4-Bit | National Semiconductor |
| 372806 | DM74LS257 | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372807 | DM74LS257 | 3-state Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 372808 | DM74LS257 | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372809 | DM74LS257 | 3-state Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 372810 | DM74LS257 | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372811 | DM74LS257 | 3-state Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 372812 | DM74LS257B | Dati Di tre stati Selector/Multiplexer Della Linea 2-to-1 Del Quad | National Semiconductor |
| 372813 | DM74LS257B | 3-state Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 372814 | DM74LS257BCW | 3-STATE Quad 2-Data Selector / Multiplexer | Fairchild Semiconductor |
| 372815 | DM74LS257BM | 3-state Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 372816 | DM74LS257BM | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372817 | DM74LS257BM | 3-state Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 372818 | DM74LS257BM | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372819 | DM74LS257BM | 3-state Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 372820 | DM74LS257BM | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372821 | DM74LS257BMX | 3-STATE Quad 2-Data Selector / Multiplexer | Fairchild Semiconductor |
| 372822 | DM74LS257BN | 3-state Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 372823 | DM74LS257BN | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372824 | DM74LS257BN | 3-state Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 372825 | DM74LS257BN | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372826 | DM74LS257BN | 3-state Quad 2-Data Selectors/Multiplexers | Fairchild Semiconductor |
| 372827 | DM74LS257BN | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372828 | DM74LS258 | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372829 | DM74LS258 | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372830 | DM74LS258 | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372831 | DM74LS258B | Dati Di tre stati Selector/Multiplexer (Invertire) Della Linea 2-to-1 Del Quad | National Semiconductor |
| 372832 | DM74LS258BM | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372833 | DM74LS258BM | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372834 | DM74LS258BM | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372835 | DM74LS258BN | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372836 | DM74LS258BN | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372837 | DM74LS258BN | Quad Di tre stati 2-Data Selectors/Multiplexers | National Semiconductor |
| 372838 | DM74LS259 | pubblicazione periodica 8-Bit dentro al parallelo verso l'esterno i fermi accessibili | National Semiconductor |
| 372839 | DM74LS259 | Fermi Accessibili 8-Bit | Fairchild Semiconductor |
| 372840 | DM74LS259CW | 8-Bit Serial In Parallel Out indirizzabili Chiusure | Fairchild Semiconductor |
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