U490B 系列
| 製造商零件# | 描述 | 製造商 | 有存貨 | 手術 |
| U490B-M | IC PHASE CONTROL ONE-SHOT 8DIP | Microchip Technology | 7879 |
|
| U490B-MFPG3 | IC PHASE CONTROL ONE-SHOT 8-SOIC | Microchip Technology | 2289 |
|
| U490B-MFP | IC PHASE CONTROL ONE-SHOT 8-SOIC | Microchip Technology | 7258 |
|