Description:

The NTE849 is an integrated circuit in a 14–Lead DIP type package designed for use in TV horizontal/ vetical countdown digital sync systems. In some video playback units, there are incorrect frequency relationships between horizontal and field frequencies. Automatic forced asynchronous mode eliminates jitter when equalizer pulses are correct, but these incorrect frequency relationships exist.

Features:

● Automatic Forced Asynchronous Mode to Remove Jitter

● Improved Low Voltage Start–Up Operation

● Lower Zero–State Horizontal–Drive Pulse Output

● Improved Symmetry for Horizontal–Drive Output

● Improved Automatic Standard Operation

● Noise Detector

● Handles Standard NTSC and Non–Standard Signals

● Automatic Mode Recognition

● Clock Input

● Vertical Ramp (Sawtooth) Generator

● Vertical Amplifier

● Vertical Blanking Generator

● Horizontal Drive Pulse Output

● Ratio–Voltage Regulator

● Inherent Interlace for NTSC Signals

● Vertical–Hold Control Eliminated

● Supply Voltage Range: 10.8V to 13.2V

● Rapid Pull–In

● Co–Channel Sync Lockout for NTSC Signals

● I2L Logic