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本文对电话专用振铃集成电路CSC1240的内部结构、基本特性和典型应用电路做一简单介绍。 CSC1240专用振铃集成电路的内部框图和引脚如图1所
This text makes a brief introduction to the internal structure, basic characteristic and typical application circuit of the telephone ringing integrated circuit CSC1240. CSC1240 dedicated ringing IC’s internal block diagram and pin as shown in Figure 1