| 型号 | 制造商 | 描述 | 操作 |
| SN74LS221NE4 [更多] | Texas Instruments | Monostable Multivibrator Dual w/Schmitt-trgr inputs RoHS: Compliant | 搜索 |
| 型号 | 制造商 | 描述 | 操作 |
| SN74LS221NE4 [更多] | Texas Instruments | Monostable Multivibrator Dual 16-Pin PDIP Tube - Rail/Tube (Alt: SN74LS221NE4) RoHS: Compliant | 搜索 |
| 型号 | 制造商 | 描述 | 操作 |
| SN74LS221NE4 [更多] | Texas Instruments | 搜索 |
| 型号 | 制造商 | 描述 | 操作 |
| SN74LS221NE4 [更多] | Texas Instruments | Monostable Multivibrator Dual 16-Pin PDIP Tube RoHS: Compliant | 搜索 |
| 型号 | 制造商 | 描述 | 操作 |
| SN74LS221NE4 [更多] | Texas Instruments | Multivibrator, Monostable Type, 16 Pin, Plastic, DIP | 搜索 |