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NTE849 - Integrated Circuit TV Horizontal/Vertical Countdown Digital Sync System

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.

Features

  • D Automatic Forced Asynchronous Mode to Remove Jitter D Improved Low Voltage Start.
  • Up Operation D Lower Zero.
  • State Horizontal.
  • Drive Pulse Output D Improved Symmetry for Horizontal.
  • Drive Output D Improved Automatic Standard Operation D Noise Detector D Handles Standard NTSC and Non.
  • Standard Signals D Automatic Mode Recognition D D D D D D D D D D D D Clock Input Vertical Ramp (Sawtooth) Generator Vertical Amplifier Vertical Blanking Generator Horizontal.

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Datasheet Details

Part number NTE849
Manufacturer NTE Electronics (defunct)
File Size 33.82 KB
Description Integrated Circuit TV Horizontal/Vertical Countdown Digital Sync System
Datasheet download datasheet NTE849 Datasheet

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Full PDF Text Transcription

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NTE849 Integrated Circuit TV Horizontal/Vertical Countdown Digital Sync System 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. Automatic standard mode occurs upon detection of nine or more equalizing pulses during a six–line– width vertical driving period after seven fields of coincidence between integrated vertical (IV) sync and internal counter output.
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