| 409241 | DM74S474AJ | 45 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409242 | DM74S474AN | 45 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409243 | DM74S474AV | 45 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409244 | DM74S474BJ | 35 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409245 | DM74S474BN | 35 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409246 | DM74S474BV | 35 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409247 | DM74S474J | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409248 | DM74S474N | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409249 | DM74S474V | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409250 | DM74S475AJ | 45 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409251 | DM74S475AN | 45 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409252 | DM74S475AV | 45 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409253 | DM74S475J | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409254 | DM74S475N | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409255 | DM74S475V | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 409256 | DM74S51 | Dual 2-Wide 2-Input AND-OR-INVERT Gate | Fairchild Semiconductor |
| 409257 | DM74S51 | Dual 2-Wide 2-Input AND-OR-INVERT Gate | National Semiconductor |
| 409258 | DM74S51N | Dual 2-Wide 2-Input AND-OR-INVERT Gate | Fairchild Semiconductor |
| 409259 | DM74S570AJ | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
|
| 409260 | DM74S570AN | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409261 | DM74S570AV | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409262 | DM74S570J | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409263 | DM74S570N | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409264 | DM74S570V | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409265 | DM74S571 | (512 x 4) 2048 Bit TTL PROM | National Semiconductor |
| 409266 | DM74S571AJ | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409267 | DM74S571AN | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409268 | DM74S571AV | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409269 | DM74S571BJ | 35 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409270 | DM74S571BN | 35 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409271 | DM74S571BV | 35 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409272 | DM74S571J | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409273 | DM74S571N | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409274 | DM74S571V | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 409275 | DM74S572AJ | 45 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 409276 | DM74S572AN | 45 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 409277 | DM74S572AV | 45 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 409278 | DM74S572J | 60 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 409279 | DM74S572N | 60 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 409280 | DM74S572V | 60 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
