LC74780

The LC74780 is designed as one kind of CMOS, video display controller for superimposing text and low level graphics onto an NTSC, PAL or PAL-M compatible television receiver. Up to 288, 12 x 18 pixel characters can be displayed under microprocessor control on a 24-character by 12-line display. And this device operates from a 5 V supply and is available in 24-pin DIPs ,and the LC74780M, in 24-pin MFPs.

Features of the LC74780 are:(1)complete text and graphics video overlay circuitry;(2)128-character internal character generator ROM;(3)12 x 18 pixel characters;(4)three pixel widths and three pixel heights;(5)selectable background color;(6)built-in synchronization check and separation circuitry.

The absolute maximum ratings of the LC74780 can be summarized as:(1)VDD1 and VDD2 supply voltage range: Vss-0.3 to Vss+7.0 V;(2)input voltage range for all inputs: Vss-0.3 to VDD+0.3 V;(3)csynout, sync and sepout output voltage range: Vss-0.3 to Vss+7.0 V;(4)power dissipation (Ta=25): 350 mW;(5)operating temperature range: -30 to +70 ;(6)storage temperature range: -40 to +125 . If you want to know more information such as the electrical characteristics about the LC74780, please download the datasheet in www.seekic.com or www.chinaicmart.com .