| Fabricante Electrónico | No. de pieza | Datasheet | Descripción Electrónicos |
 National Semiconductor ... | DM74LS51 |  63Kb/3P | DUAL 2-WIDE 2-INPUT, 2-WIDE 3-INPUT AND-OR-INVERT GATES |
 National Semiconductor ... | DM74LS51M |  63Kb/3P | DUAL 2-WIDE 2-INPUT, 2-WIDE 3-INPUT AND-OR-INVERT GATES |
 National Semiconductor ... | DM74LS51N |  63Kb/3P | DUAL 2-WIDE 2-INPUT, 2-WIDE 3-INPUT AND-OR-INVERT GATES |
 National Semiconductor ... | DM74LS502N |  133Kb/6P | 8-Bit Successive Approximation Register |
| DM74LS502WM |  133Kb/6P | 8-Bit Successive Approximation Register |
 National Semiconductor ... | DM74LS51M |  63Kb/3P | DUAL 2-WIDE 2-INPUT, 2-WIDE 3-INPUT AND-OR-INVERT GATES |
 National Semiconductor ... | DM74LS51N |  63Kb/3P | DUAL 2-WIDE 2-INPUT, 2-WIDE 3-INPUT AND-OR-INVERT GATES |
 National Semiconductor ... | DM74LS54 |  109Kb/6P | 4-WIDE, 2-Input AND-OR-INVERT Gate |