| Manufacturer | Part # | Datasheet | Description |
 National Semiconductor ... | 74F827 |  164Kb/8P | 10-Bit Buffers/Line Drivers |
 National Semiconductor ... | 74F827SC |  164Kb/8P | 10-Bit Buffers/Line Drivers |
 National Semiconductor ... | 74F827SPC |  164Kb/8P | 10-Bit Buffers/Line Drivers |
 National Semiconductor ... | 74F821 |  153Kb/ 8P | 10-Bit D-Type Flip-Flop |
 National Semiconductor ... | 74F821SC |  153Kb/ 8P | 10-Bit D-Type Flip-Flop |
 National Semiconductor ... | 74F821SPC |  153Kb/ 8P | 10-Bit D-Type Flip-Flop |
 National Semiconductor ... | 74F823 |  158Kb/ 8P | 9-Bit D-Type Flip-Flop |
 National Semiconductor ... | 74F823SC |  158Kb/ 8P | 9-Bit D-Type Flip-Flop |
 National Semiconductor ... | 74F823SPC |  158Kb/ 8P | 9-Bit D-Type Flip-Flop |