| 型号 | 厂家 | 封装 | 批号 |
| 74AHC273D118 | Nexperi | 20-SOIC | 22+ |
| 74AHC273D112 | Nexperi | 20-SOIC | 22+ |
| 74AHC273D-Q100J | Nexperi | 20-SOIC | 22+ |
| 74AHC245D118 | Nexperi | 20-SOIC | 22+ |
| 74AHC245D-Q100J | Nexperi | 20-SOIC | 22+ |
| 74AHC244D118 | Nexperi | 20-SOIC | 22+ |
| 74FCT621ATSOG | IDT | 20-SOIC | 22+ |
| 74FCT621TSOG8 | IDT | 20-SOIC | 22+ |
| 74FCT621TSOG | IDT | 20-SOIC | 22+ |
| 74FCT621ATSOG8 | IDT | 20-SOIC | 22+ |
