HT95R35 Datasheet, Holtek Semiconductor

* Operating voltage:
* DTMF generator
* DTMF receiver
* 12-bit Audio DAC output
* Power-down and wake-up feature for power-saving fSYS= 3.58MHz: 2.2V.

Device flexibility is enhanced with their internal special features such as power-down and wake-up functions, DTMF gene.