MAX7461

PRODUCTION

Loss-of-Sync Alarm

Complete LOS Alarm Stand-Alone Solution

Data Sheet (Rev. 1) Product Selection Table
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Overview

  • 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

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.

Applications

  • Consumer Electronics
  • Security Systems
MAX7461
Loss-of-Sync Alarm
MAX7461: Functional Diagram
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 2

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