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SAA5231
DATA SLICER FOR TELETEXT PROCESSOR
s SEPARATION OF TELETEXT DATA FROM THE COMPOSITE VIDEO SIGNAL
s SEPARATION OF HORIZONTAL AND VERTICAL SYNCHRONIZATION SIGNALS FROM THE COMPOSITE VIDEO SIGNAL
s EXTERNAL OSCILLATOR GENERATING 6MHz SIGNAL SYNCHRONIZED TO A MULTIPLE OF THE LINE FREQUENCY BY PLL
s A 6.9375MHz CLOCK GENERATED FROM AN EXTERNAL QUARTZ CRYSTAL
s ”AFTER-HOURS” SYNCHRONIZATION OPTION
s PROGRAMMABLE LEVELS FOR THE INPUT COMPOSITE VIDEO SIGNAL (1V OR 2.5V)
s PROCESSING OF EXTERNAL TELETEXT DATA
s OUTPUT OF POSITIVE OR NEGATIVE SYNCHRONIZING SIGNALS
s 28 PIN DIP PACKAGE s HDS2P2 TECHNOLOGY
DESCRIPTION The SAA5231 is a monolithic integrated circuit in 28 Pin DIP package designed to separate Teletext signals from TV signal.