Kazi: Base-Band LSI, Idadi ya Mizunguko: 1, Voltage - Ugavi: 1.9V ~ 5.5V,
Kazi: DTMF Receiver, Kiolesura: Serial, Idadi ya Mizunguko: 1, Voltage - Ugavi: 2.6V ~ 3.7V, Ugavi wa Sasa: 3.8mA,