| 1650241 | UM3480 | Multi-Melody Generator with Sleep Function | UMC |
| 1650242 | UM3480-SERIES | Multi-Melody Generator with Sleep Function | UMC |
| 1650243 | UM3481A | Multi-Melody Generator with Sleep Function | UMC |
| 1650244 | UM3481A-SERIES | Multi-Instrument Melody Generator | UMC |
| 1650245 | UM3482A | (UM3481A Series) Multi-Instrument Melody Generator | Unicorn Microelectronics |
| 1650246 | UM3482A | Multi-Instrument Melody Generator | Unicorn Microelectronics |
| 1650247 | UM3483A | Multi-Instrument Melody Generator | Unicorn Microelectronics |
| 1650248 | UM348X | Multi-Instrument Melody Generator | UMC |
| 1650249 | UM348X-SERIES | Multi-Instrument Melody Generator | UMC |
| 1650250 | UM3491-SERIES | Melody Generator with Accompaniment | UMC |
| 1650251 | UM3511A | Melody Organ Generator | UMC |
| 1650252 | UM3522G | Simple Piano | UMC |
| 1650253 | UM3561 | Three Siren Sound Generator | UMC |
| 1650254 | UM3561 | Three Siren Sound Generator | United Microelectronics |
| 1650255 | UM3561A | CARACTERISTICAS | UMC |
| 1650256 | UM3561H | THREE SIREN SOUND GENERATOR | UMC |
| 1650257 | UM3561H | Three siren sound generator | United Microelectronics |
| 1650258 | UM375-084A | TRi-STATE ProgrammaBle Encoder/Decoder | UMC |
| 1650259 | UM375-108AM | TRi-STATE ProgrammaBle Encoder/Decoder | UMC |
|
| 1650260 | UM375-108BM | TRi-STATE ProgrammaBle Encoder/Decoder | UMC |
| 1650261 | UM375-180A | TRi-STATE ProgrammaBle Encoder/Decoder | UMC |
| 1650262 | UM3750 | Programmable Encoder/Decoder | UMC |
| 1650263 | UM3750 | Programmable Encoder/Decoder | United Microelectronics |
| 1650264 | UM3750A | Programmable Encoder/Decoder | UMC |
| 1650265 | UM3750AM | Programmable Encoder/Decoder | UMC |
| 1650266 | UM3750M | Programmable Encoder/Decoder | United Microelectronics |
| 1650267 | UM3751 | Programmable Encoder/Decoder | UMC |
| 1650268 | UM3752 | Programmable Encoder/Decoder | UMC |
| 1650269 | UM3753 | Programmable Encoder/Decoder | UMC |
| 1650270 | UM3754 | Programmable Encoder/Decoder | UMC |
| 1650271 | UM3755 | Programmable Encoder/Decoder | UMC |
| 1650272 | UM3758 | TRi-STATE ProgrammaBle Encoder/Decoder | UMC |
| 1650273 | UM3758-084A | TRi-STATE ProgrammaBle Encoder/Decoder | UMC |
| 1650274 | UM3758-084A | Tri-siate programmahle encoder/decoder | United Microelectronics |
| 1650275 | UM3758-084AM | TRi-STATE ProgrammaBle Encoder/Decoder | UMC |
| 1650276 | UM3758-084AM | Tri-siate programmahle encoder/decoder | United Microelectronics |
| 1650277 | UM3758-084B | TRi-STATE ProgrammaBle Encoder/Decoder | UMC |
| 1650278 | UM3758-084B | Tri-siate programmahle encoder/decoder | United Microelectronics |
| 1650279 | UM3758-084BM | TRi-STATE ProgrammaBle Encoder/Decoder | UMC |
| 1650280 | UM3758-084BM | Tri-siate programmahle encoder/decoder | United Microelectronics |
