[Yamaha]

General Description
YTD427 is a communication LSI which provides the ISDN subscriber interface (two-wire metallic time compression multiplexing operation). It is capable of providing the electric characteristics conforming to TTC Standard JT-G961.
A DSU (Digital Service Unit) can easily be constructed by combining with YTD426B.

FEATUREs
1. Automatic Gain Control (AGC) function
2. Filter function
3. Peak hold function
4. ADC (Analog Digital Converter) function
5. Low Power Consumption Operation mode 72mW(typ.)
6. CMOS technology
7. 64-pin QFP
8. Single +5 volt supply