1/2-INCH NTSC TIMER

The SN28835 is a monolithic integrated circuit designed to supply Timing signals for the Texas Instruments (TI) 8-mm TC242/TC244 color and TC243 TC245 monochrome CCD Image Sensors The SN28835 supplies both CCD-drive signals and NTSC-television synchronization signals at standard Video rates. It requires a single 5-V supply voltage and a 14.318-MHz crystal-oscillator input. The SN28835 provides the user with several options including multiple antiblooming modes, variable-integration time, external synchronization, and delayed horizontal transfer. The SN28835 is designed to drive the CCD Image Sensor through intermediary level-shifting devices such as the TI TMS3473B parallel driver and the SN28846 serial driver. It also supplies sample-and-hold signals for the TI TL1593 3-channel sample-and-hold circuit and multiplex signals for the TI TL1051 Video preprocessor. The SN28835 NTSC synchronization-signal outputs include composite sync, composite blank, clamp, subcarrier, subcarrier delayed by 90 degrees, and burst flag. The SN28835 is supplied in a 44-pin plastic flat package and is characterized for operation from 20C to 45C. By Texas Instruments