| 408521 | DM74LS243WMX | Quadruple Bus Transceiver | Fairchild Semiconductor |
| 408522 | DM74LS244 | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 408523 | DM74LS244 | Octal TRI-STATE Buffer/Line Driver/Line Receiver | National Semiconductor |
| 408524 | DM74LS244CW | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 408525 | DM74LS244N | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 408526 | DM74LS244N | Octal TRI-STATEE Buffers/Line Drivers/Line Receivers | National Semiconductor |
| 408527 | DM74LS244SJ | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 408528 | DM74LS244SJX | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 408529 | DM74LS244WM | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 408530 | DM74LS244WM | Octal TRI-STATEE Buffers/Line Drivers/Line Receivers | National Semiconductor |
| 408531 | DM74LS244WMX | Octal 3-STATE Buffer/Line Driver/Line Receiver | Fairchild Semiconductor |
| 408532 | DM74LS245 | 3-STATE Octal Bus Transceiver | Fairchild Semiconductor |
| 408533 | DM74LS245 | Octal TRI-STATE Bus Transceiver | National Semiconductor |
| 408534 | DM74LS245CW | Octal 3-STATE Bus Transceiver | Fairchild Semiconductor |
| 408535 | DM74LS245N | 3-STATE Octal Bus Transceiver | Fairchild Semiconductor |
| 408536 | DM74LS245N | TRI-STATE Octal Bus Transceiver | National Semiconductor |
| 408537 | DM74LS245SJ | 3-STATE Octal Bus Transceiver | Fairchild Semiconductor |
| 408538 | DM74LS245SJX | Octal 3-STATE Bus Transceiver | Fairchild Semiconductor |
| 408539 | DM74LS245WM | 3-STATE Octal Bus Transceiver | Fairchild Semiconductor |
|
| 408540 | DM74LS245WM | TRI-STATE Octal Bus Transceiver | National Semiconductor |
| 408541 | DM74LS245WM | TRI-STATE Octal Bus Transceiver | National Semiconductor |
| 408542 | DM74LS245WMX | Octal 3-STATE Bus Transceiver | Fairchild Semiconductor |
| 408543 | DM74LS247 | BCD to 7-Segment Decoder/Driver with Open-Collector Outputs | National Semiconductor |
| 408544 | DM74LS247M | V(cc): 4.75 to 5.25V; BCD to 7-segment decoder/driver with open collector outputs | Fairchild Semiconductor |
| 408545 | DM74LS247M | 7 V, BCD to 7-segment decoder/driver with open-collector output | National Semiconductor |
| 408546 | DM74LS247N | V(cc): 4.75 to 5.25V; BCD to 7-segment decoder/driver with open collector outputs | Fairchild Semiconductor |
| 408547 | DM74LS248 | BCD to 7-Segment Decoder with 2k Ohm Pull-Up Resistors | National Semiconductor |
| 408548 | DM74LS248M | 7 V, BCD to 7-segment decoder | National Semiconductor |
| 408549 | DM74LS248N | 7 V, BCD to 7-segment decoder | National Semiconductor |
| 408550 | DM74LS249 | BCD to 7-Segment Decoder (with Open Collector Outputs) | National Semiconductor |
| 408551 | DM74LS249N | 7 V, BCD to 7-segment decoder (with open-collector output) | National Semiconductor |
| 408552 | DM74LS251 | 3-STATE 1-of-8 Line Data Selector/Multiplexer | Fairchild Semiconductor |
| 408553 | DM74LS251 | TRI-STATE 1-of-8 Line Data Selector/Multiplexer with Complementary Outputs | National Semiconductor |
| 408554 | DM74LS251CW | 3-STATE 1-of-8 Line Data Selector/Multiplexer | Fairchild Semiconductor |
| 408555 | DM74LS251M | 3-STATE 1-of-8 Line Data Selector/Multiplexer | Fairchild Semiconductor |
| 408556 | DM74LS251M | TRI-STATE Data Selectors/Multiplexers | National Semiconductor |
| 408557 | DM74LS251MX | 3-STATE 1-of-8 Line Data Selector/Multiplexer | Fairchild Semiconductor |
| 408558 | DM74LS251N | 3-STATE 1-of-8 Line Data Selector/Multiplexer | Fairchild Semiconductor |
| 408559 | DM74LS251N | TRI-STATE Data Selectors/Multiplexers | National Semiconductor |
| 408560 | DM74LS253 | 3-STATE Data Selector/Multiplexer | Fairchild Semiconductor |
