LC74784

The LC74784 is designed as one kind of on-screen display CMOS LSIs that display characters and patterns on a TV screen under microprocessor control. It display up to 12 lines of 24 characters and each in a 12x18 dot matrix.

LC74784 has many features. (1)Display structure 12 lines x24 characters (up to 288 characters). (2)Character structure 12 (horizontal) x18 (vertical) dots. (3)Character sizes: three size settings each in the vertical and horizontal directions. (4)Character set 256 characters. (5)Display start position 64 position setting each in the vertical and horizontal directions. (6)Blinking in individual character units. (7)Blinking types two types with periods of about 0.5 and 1.0 second. (8)External control input 8bit serial input format. (9)Built-in sync separator circuit. (10)Character blanked data output. (11)Video output compound NTSC, PAL, AL-N and PAL-M output. And so on.

Some absolute maximum ratings of LC74784 have been concluded into several points as follow. (1)Its maximum supply voltage would be from Vss-0.3V to Vss+7.0V. (2)Its maximum input voltage would be from Vss-0.3V to Vdd+0.3V. (3)Its maximum output voltage would be from Vss-0.3V to Vdd+0.3V. (4)Its allowable power dissipation would be 350mW. (5)Its operating temperature range would be from -30°C to 70°C. (6)Its storage temperature range would be from -40°C to 125°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics of LC74784 are concluded as follow. (1)Its input off leakage current would be max 1uA. (2)Its output off leakage current would be max 1uA. (3)Its output high level voltage would be min 3.5V. (4)Its output low level voltage would be max 1.0V. (5)Its input current would be max 1uA for high level and would be min -1uA for low level. (6)Its operating current drain would be max 15mA for Vdd1 pin and would be max 20mA for Vdd2 pin. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!