Overview
The LC89978M is a CCD delay line for multi television system that incorporates a comb filter to remove noise from the chrominance signal and a 1-H delay line for the luminance signal.

Features
• 5-V single-voltage power supply
• Built-in 4 × PLL frequency multiplier circuit allows 4fsc operation from an fsc (3.58 MHz) input.
• Can be switched between the NTSC/M, PAL/GBI, and PAL/M formats by setting control pin values.
• Includes a built-in crosstalk exclusion comb filter for the chrominance signal that provides high-precision comb characteristics in an adjustment-free circuit.
• Peripheral circuits provided on chip for operation with a minimum of external components.
• Positive-phase signal input, positive-phase signal output (luminance signal)

Functions
• CCD shift registers (for chrominance and luminance signals)
• Timing generator and clock driver for CCD
• Delay time selective circuit
• CCD signal adder
• Auto-bias circuit
• Sync tip clamp circuit (luminance signal)
• Center bias circuit (chrominance signal)
• Sample-and-hold circuit
• 4 × PLL frequency multiplier circuit
• 4fsc clock output circuit
• High voltage generator for CCD Reset Drain (RD).