74121 系列
| 製造商零件# | 描述 | 製造商 | 有存貨 | 手術 |
| SN74121D | IC MULTIVIBRATOR 45NS 14SOIC | Texas Instruments | 5792 |
|
| SN74121N | IC MULTIVIBRATOR 45NS 14DIP | Texas Instruments | 3881 |
|
| SN74121DE4 | IC MULTIVIBRATOR 45NS 14SOIC | Texas Instruments | 2768 |
|