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08/12/04 CM2009 Product Description (cont’d) Two non-inverting drivers provide buffering for theHSYNC and VSYNC signals from the video controllerIC (SYNC1, SYNC2). These buffers accept TTL inputlevels and convert them to CMOS output levels thatswing between Ground and VCC_SYNC, which is typi-cally 5V. Additionally, each driver has a series termina-tion resistor (RT) connected to the SYNC_OUT pin,eliminating the external termination resistors typicallyrequired for the HSYNC and VSYNC lines of the videocable. There are three versions with different values ofRT to allow termination at typically 65Ω (CM2009-00)or 55Ω (CM2009-01) or 15Ω (CM2009-02