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NTSC 2:1 Switch Device

Other Parts Discussed in Thread: TS3V713EL, TS3V712E

 Hi,

To fabricate a system using two video cameras.
The NTSC signal, which is output from the two cameras,
Please introduce the device to be used by switching to one input of the microcomputer.

Camera1(NTSC)→
                                      Switch(2:1)    → (NTSC) MUC
Camera2(NTSC)→

※Do TS3V713EL can be used in NTSC-Switch?

Best regards

  • Cafain,

    You can use any TI signal switch for National Television System Committee (NTSC) signals as long as the switches recommended voltage and bandwidth can accommodate the NTSC voltage and bandwidth.  What is the voltage level and bandwidth of your composite video signal?

    I tried doing some research on the voltage and bandwidth of the NTSC and found that the signal uses 1 Vpp and bandwidth will be dependent on your resolution.

    You can read more about the video bandwidth in this document www.maximintegrated.com/.../750

     The TS3V713EL signal path can accommodate 3.6 V so 1 V pp will not be an issue.   Also be aware that the TS3V713EL switch has integrated level shifters on the Hsync and Vsync pins which makes it uni directional and not suitable for 2:1 switching.   You will need to use a 1:2 switch like the TS3V712E that doesn't have the integrate level shifting to use it in a 2:1 application.  


    With the bandwidth, voltage levels, and number of signal paths you need to 2:1 switch we can make the appropriate recommendation.

    Thank you,

    Adam