| Produttore elettronici | Il numero della parte | Scheda tecnica | Spiegazioni elettronici |
 National Semiconductor ... | 54FCT574 |  145Kb/7P | Octal D-Type Flip-Flop with TRI-STATE Outputs |
 National Semiconductor ... | 54FCT574D |  145Kb/7P | Octal D-Type Flip-Flop with TRI-STATE Outputs |
 National Semiconductor ... | 54FCT574DMQB |  145Kb/7P | Octal D-Type Flip-Flop with TRI-STATE Outputs |
| 54FCT574F |  145Kb/7P | Octal D-Type Flip-Flop with TRI-STATE Outputs |
| 54FCT574FMQB |  145Kb/7P | Octal D-Type Flip-Flop with TRI-STATE Outputs |
| 54FCT574L |  145Kb/7P | Octal D-Type Flip-Flop with TRI-STATE Outputs |
 National Semiconductor ... | 54FCT574LMQB |  145Kb/7P | Octal D-Type Flip-Flop with TRI-STATE Outputs |