| 54F38DMQB | National Semiconductor | Quad 2-Input NAND Buffer (Open Collector) |
| 54F38FMQB | National Semiconductor | Quad 2-Input NAND Buffer (Open Collector) |
| 54F38LMQB | National Semiconductor | Quad 2-Input NAND Buffer (Open Collector) |
| 54F398 | National Semiconductor | Quad 2-Port Register [Life-time buy] |
| 54F398DMQB | National Semiconductor | Quad 2-Port Register [Life-time buy] |
| 54F398LMQB | National Semiconductor | Quad 2-Port Register [Life-time buy] |
| 54F399 | National Semiconductor | Quad 2-Port Register |
| 54F399DMQB | National Semiconductor | Quad 2-Port Register |
| 54F399LMQB | National Semiconductor | Quad 2-Port Register |
| 54F402 | National Semiconductor | Serial Data Polynomial Generator/Checker [Life-time buy] |
| 54F410 | National Semiconductor | Register Stack 16 x 4 RAM TRI-STATE Output Register [Life-time buy] |
| 54F410DMQB | National Semiconductor | Register Stack 16 x 4 RAM TRI-STATE Output Register [Life-time buy] |
| 54F413 | National Semiconductor | 64 x 4 First-In First-Out Buffer Memory with Parallel I/O |
| 54F413DMQB | National Semiconductor | 64 x 4 First-In First-Out Buffer Memory with Parallel I/O |
| 54F521 | National Semiconductor | 8-Bit Identity Comparator |
| 54F521DMQB | National Semiconductor | 8-Bit Identity Comparator |
| 54F521LMQB | National Semiconductor | 8-Bit Identity Comparator |
| 54F533 | National Semiconductor | Octal Transparent Latch with TRI-STATE Outputs |
| 54F533DMQB | National Semiconductor | Octal Transparent Latch with TRI-STATE Outputs |
| 54F533FMQB | National Semiconductor | Octal Transparent Latch with TRI-STATE Outputs |