| 449121 | DM74S474AV | 45 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449122 | DM74S474BJ | 35 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449123 | DM74S474BN | 35 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449124 | DM74S474BV | 35 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449125 | DM74S474J | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449126 | DM74S474N | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449127 | DM74S474V | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449128 | DM74S475AJ | 45 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449129 | DM74S475AN | 45 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449130 | DM74S475AV | 45 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449131 | DM74S475J | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449132 | DM74S475N | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449133 | DM74S475V | 65 ns, (512 x 8) 4096-bit TTL PROM | National Semiconductor |
| 449134 | DM74S51 | Dual 2-Wide 2-Input AND-OR-INVERT Gate | Fairchild Semiconductor |
| 449135 | DM74S51 | Dual 2-Wide 2-Input AND-OR-INVERT Gate | National Semiconductor |
| 449136 | DM74S51N | Dual 2-Wide 2-Input AND-OR-INVERT Gate | Fairchild Semiconductor |
| 449137 | DM74S570AJ | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449138 | DM74S570AN | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449139 | DM74S570AV | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
|
| 449140 | DM74S570J | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449141 | DM74S570N | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449142 | DM74S570V | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449143 | DM74S571 | (512 x 4) 2048 Bit TTL PROM | National Semiconductor |
| 449144 | DM74S571AJ | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449145 | DM74S571AN | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449146 | DM74S571AV | 45 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449147 | DM74S571BJ | 35 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449148 | DM74S571BN | 35 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449149 | DM74S571BV | 35 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449150 | DM74S571J | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449151 | DM74S571N | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449152 | DM74S571V | 55 ns, (512 x 4) 2048-bit TTL PROM | National Semiconductor |
| 449153 | DM74S572AJ | 45 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 449154 | DM74S572AN | 45 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 449155 | DM74S572AV | 45 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 449156 | DM74S572J | 60 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 449157 | DM74S572N | 60 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 449158 | DM74S572V | 60 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 449159 | DM74S573AJ | 45 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
| 449160 | DM74S573AN | 45 ns, (1024 x 4) 4096-bit TTL PROM | National Semiconductor |
