The M52757FP is a semiconductor integrated circuit for the RGB interface. The device features switching signals input from two types of image sources and outputting the signals to the CRT display,etc. The frequency band of video signals is 250MHz, acquiring high-resolution images, and are optimum as an interface IC with highresolution CRT display and various new media. It includes Sync-separator, Video-signal-detector, and Sync-on G detector (SOG-DET.).