| 449001 | DM74S188J | 35 ns, (32 x 8) 256-bit TTL PROM | National Semiconductor |
| 449002 | DM74S188N | 35 ns, (32 x 8) 256-bit TTL PROM | National Semiconductor |
| 449003 | DM74S188V | 35 ns, (32 x 8) 256-bit TTL PROM | National Semiconductor |
| 449004 | DM74S189AJ | 4.75 V to 5.25 V, high speed 64-bit TRI-STATE RAM | National Semiconductor |
| 449005 | DM74S189AN | 4.75 V to 5.25 V, high speed 64-bit TRI-STATE RAM | National Semiconductor |
| 449006 | DM74S189J | 4.75 V to 5.25 V, 64-bit (16 x 4) TRI-STATE RAM | National Semiconductor |
| 449007 | DM74S189N | 4.75 V to 5.25 V, 64-bit (16 x 4) TRI-STATE RAM | National Semiconductor |
| 449008 | DM74S194 | 4-Bit Bidirectional Universal Shift Register | National Semiconductor |
| 449009 | DM74S194N | 7 V, 4-bit bidirectional universal shift register | National Semiconductor |
| 449010 | DM74S195 | 4-Bit Parallel Access Shift Register | National Semiconductor |
| 449011 | DM74S195N | 7 V, 4-bit parallel access shift register | National Semiconductor |
| 449012 | DM74S20 | Dual 4-Input NAND Gate | Fairchild Semiconductor |
| 449013 | DM74S20 | Dual 4-Input NAND Gate | National Semiconductor |
| 449014 | DM74S20N | Dual 4-Input NAND Gate | Fairchild Semiconductor |
| 449015 | DM74S240 | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 449016 | DM74S240 | Octal TRI-STATE Buffer/Line Driver/Line Receiver | National Semiconductor |
| 449017 | DM74S240N | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 449018 | DM74S240N | 7 V, octal TRI-STATE buffer/line driver/line receiver | National Semiconductor |
| 449019 | DM74S240WM | 7 V, octal TRI-STATE buffer/line driver/line receiver | National Semiconductor |
|
| 449020 | DM74S241 | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 449021 | DM74S241 | Octal TRI-STATE Buffer/Line Driver/Line Receiver | National Semiconductor |
| 449022 | DM74S241N | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 449023 | DM74S241N | 7 V, octal TRI-STATE buffer/line driver/line receiver | National Semiconductor |
| 449024 | DM74S244 | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 449025 | DM74S244 | Octal TRI-STATE Buffer/Line Driver/Line Receiver | National Semiconductor |
| 449026 | DM74S244CW | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 449027 | DM74S244N | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 449028 | DM74S244N | 7 V, octal TRI-STATE buffer/line driver/line receiver | National Semiconductor |
| 449029 | DM74S244WM | 7 V, octal TRI-STATE buffer/line driver/line receiver | National Semiconductor |
| 449030 | DM74S251 | TRI-STATE 1-of-8 Line Data Selector/Multiplexer with Complementary Outputs | National Semiconductor |
| 449031 | DM74S251N | 7 V, TRI-STATE 1 of 8 line data selector/multiplexer | National Semiconductor |
| 449032 | DM74S253 | Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer | Fairchild Semiconductor |
| 449033 | DM74S253 | Dual TRI-STATE 1-of-4 Line Data Selector/Multiplexer | National Semiconductor |
| 449034 | DM74S253N | Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer | Fairchild Semiconductor |
| 449035 | DM74S253N | 7 V, dual TRI-STATE 1 of 4 line data selector/multiplexer | National Semiconductor |
| 449036 | DM74S257 | 3-STATE Quad 1-of-2 Data Selector/Multiplexer | Fairchild Semiconductor |
| 449037 | DM74S257 | Quad TRI-STATE 2-to-1 Line Data Selector/Multiplexer | National Semiconductor |
| 449038 | DM74S257CW | Quad 3-STATE 2-to-1 Line Data Selector/Multiplexer | Fairchild Semiconductor |
| 449039 | DM74S257N | 3-STATE Quad 1-of-2 Data Selector/Multiplexer | Fairchild Semiconductor |
| 449040 | DM74S257N | 3-STATE Quad 1-of-2 Data Selector/Multiplexer | Fairchild Semiconductor |
