| Manufacturer | Part Number | Description |
|---|---|---|
TelCom Semiconductor |
TC1240 | Positive Doubling Charge Pump |
Hangzhou Silan Microelectronics |
UTC1240A | Electronic Dual Tone Ringer |
Microchip Technology |
TC1240A | Positive Doubling Charge Pumps |
Microchip Technology |
TC1240 | Positive Doubling Charge Pumps |
