| 型号 | 生产厂家/品牌 | 封装 | 库存 | 规格 |
| 74F240PC | NSC | DIP | 300PCS |  |
| 74F240PC | FSC | DIP | 1198PCS | |
| 74F240PC | HIT | DIP | 100PCS | |
| 74F243N | PHI | DIP | 659PCS | |
| 74F244N | PHI | DIP | 100PCS | |
| 74F245PC | FSC | DIP | 180PCS | |
| 74F251APC | FSC | DIP | 100PCS | |
| 74F253N | PHI | DIP | 600PCS | |
| 74F27PC | NSC | DIP | 3488PCS | |
| 74F280PC | FSC | DIP | 117PCS | |
| 74F299N | PHI | DIP | 100PCS | |
| 74F299PC | FSC | DIP | 742PCS | |
| 74F32PC | FSC | DIP | 275PCS | |
| 74F352PC | FSC | DIP | 100PCS | |
| 74F353PC | FSC | DIP | 100PCS | |
