thanks foir steering me in the right direction... the max 435/436 chips sound ideal and l guess they are probably eight pin...will take a look...l only have to switch the one line on or off so l could use them and drive the chip enable line if they have one on or off or otherwise the power to the chip itself...great... --- Jinx > wrote: >The TEA5114 from Thomson-SCF is a 16 pin and contains three >75 ohm switches. To send video down a long cable you can try one >of the MAX transconductance video driver amp/receiver pairs. I've >done this to a neighbour's house 100m away down an unused pair >in a LAN cable using a MAX435 tx and MAX436 rx. The video gets >there OK, and the balanced signal of the MAX435 eliminates much >noise. Over that distance though you may need additional filtering if >the synch pulses get mixed up with hum and cause an unsteady >picture. 1000m is quite a distance, perhaps you could get advice >from a TV station techie > >A project using the TEA5114 > >http://www.ozemail.com.au/~tecknolt/ATV/JOTA.htm > >> Hmm..does anyone know of a video switching chip ? preferably eight >> pin... > >> If l wanted to send a video signal down say 1km of wire would that work >> or would l need some type of drivers/recievers ? This really isnt my field >> of knowledge just playing around at the moment so if anyone has any >> handy hints let me know please...thank you > >> Paul Drummond > >-- >http://www.piclist.com hint: To leave the PICList >mailto:piclist-unsubscribe-request@mitvma.mit.edu == Paul Drummond paul@bootbox.net _____________________________________________________________ BootBox.Net - Home Of The Totally Free Internet Solution http://www.bootbox.net Get an @bootbox.net webmail account - http://webmail.bootbox.net Host Your Website For Free - http://webhosting.bootbox.net Put Your E-Commerce Business Online Virtually Free - http://bcommerce.bootbox.net -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu