| 型号 | 制造商 | 描述 | 操作 |
| SN74LS21DR2 [更多] | Texas Instruments | Logic Circuit, Dual 4-Input AND, LS-TTL, 14 Pin, Plastic, SOP
| 搜索 |
| SN74LS21DR2 [更多] | Motorola Semiconductor Products | Logic Circuit, Dual 4-Input AND, LS-TTL, 14 Pin, Plastic, SOP
| 搜索 |
| SN74LS21DR2 [更多] | Motorola Semiconductor Products | Logic Circuit, Dual 4-Input AND, LS-TTL, 14 Pin, Plastic, SOP
| 搜索 |
