General Description
The STV6688 is a highly-integrated I²C bus controlled video switch matrix, optimized for use in color TV applications.
It is used to control the switching of 4 video signals. These signals can be in Single Component form (CVBS) or in Two Component form (Y/C). In both cases, the STV6688 microcontroller provides a CVBS signal for an external device (monitor).

Key Features
■ I²C Bus Control
■ Standby Mode
■ 4 Y/CVBS Inputs (one for internal TV signal)
■ 4 C Inputs (one for internal TV signal)
■ 1 Y/C Adder
■ 1 Y/CVBS and 1 C Output, each with 0 dB gain
■ 1 CVBS Output with 6 dB gain and 150 Ω Buffer for Monitor
■ SYNC Bottom Clamp on all CVBS/Y and Average Bias on C Inputs
■ Bandwidth: 15 MHz
■ Crosstalk: 50 dB (min.)