应用功能：多标准解码器 The TDA4555 and TDA4556 are monolithic integrated multistandard colour decoders for the PAL, SECAM, NTSC 3,58 MHz and NTSC 4,43 MHz standards. The difference between the TDA4555 and TDA4556 is the polarity of the colour difference output signals (B-Y) and (R-Y).
