| Manufacturer | Part Number | Description |
|---|---|---|
| Unknown Manufacturer | HX1227 | 2.5A Synchronous Buck DC/DC Converter |
Xicor
| X1227 | Real Time Clock/Calendar/CPU Supervisor with EEPROM |
Intersil (now Renesas)
| X1227 | RTC Real TimeClock/Calendar/ CPU Supervisor |
Vectron
| TDX1227 | Diplexer |
Maxim Integrated (now Analog Devices)
| MAX1227 | 12-Bit 300ksps ADCs |
