| 54F280 | National Semiconductor | 9-Bit Parity Generator/Checker |
| 54F280LMQB | National Semiconductor | 9-Bit Parity Generator/Checker |
| 54F280DMQB | National Semiconductor | 9-Bit Parity Generator/Checker |
| 54F280FMQB | National Semiconductor | 9-Bit Parity Generator/Checker |
| JM38510/34901B2A | National Semiconductor | |
| JM38510/34901BCA | National Semiconductor | |
| JM38510/34901BDA | National Semiconductor | |
| 54F280J-MLS | National Semiconductor | 9-Bit Parity Generator/Checker |