The MC44251 contains three independent parallel analogtodigital flash converters (ADC). Each ADC consists of 256 latching comparators and an encoder. Video may be ac or dc coupled. With ac coupling, input clamping provides for internal dc restoration. The MC44251 also contains a dithering generator for video processing performance enhancements. The MC44251 is especially suitable as a frontend converter in TVpicture digital processing (pictureinpicture, frame storage, etc.). The high speed conversion rate of the ADC is suitable for video bandwidth of well over 6 MHz.