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Loss-of-Sync Alarm

Complete LOS Alarm Stand-Alone Solution

Product Details

Key Features

Simplified Block Diagram

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Key Features

  • Accepts CVBS, Y, or Any Other Video with Sync
  • Loss-of-Sync Alarm Output
  • Robust Performance in Noisy Environments
  • Wire-OR Alarm Output
  • NTSC, PAL, and SECAM
  • Small 5-Pin SOT23 Package

Applications/Uses

  • Consumer Electronics
  • Security Systems

Description

The MAX7461 single-channel loss-of-sync alarm (active-low LOS) provides composite video sync detection in NTSC, PAL, and SECAM standard-definition television (SDTV) systems. The MAX7461's advanced detection circuitry delivers robust performance by preventing false loss-of-sync alarms due to noise. The device accepts an AC-coupled composite (CVBS), luma (Y), or any other video signal with sync and outputs a logic-level signal. The open-drain active-low LOS output is low when no sync is detected and high impedance when sync is detected. The device operates from a single +5V supply.

The MAX7461 is available in a 5-pin SOT23 package and is specified for operation over the -40°C to +85°C temperature range.

Simplified Block Diagram

MAX7461: Functional Diagram MAX7461: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .