| 型号 | 厂家 | 封装 | 批号 |
| U1000 | HOLTEK | SOP16 | 22+ |
| UCD2A101MNQ1MS | NIPPON | NA | 22+ |
| U2741B-NFBG3Y | ATMEL | SSOP-16 | 22+ |
| U2741BN | ATMEL | SSOP-16 | 22+ |
| UA124DM | FAIRCHILD | DIP | 22+ |
| USB3750A-1-A4-TR | MICROCHIP | QFN16 | 22+ |
| US6M2TR | ROHM | SOT363 | 22+ |
| UPC1018C | NEC | DIP | 22+ |
| UPC1365C | NEC | DIP | 22+ |
| UPC1366C | NEC | DIP | 22+ |
