MAX7461 Maxim Integrated Products, MAX7461 Datasheet
MAX7461
Manufacturer Part Number
MAX7461
Description
Loss-of-Sync Alarm
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX7461.pdf
(7 pages)
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MAX7461EUK
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MAXIM/美信
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w w w . D a t a S h e e t 4 U . c o m
The MAX7461 single-channel loss-of-sync alarm (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 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.
19-0553; Rev 0; 5/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Security Systems
Automotive Rear Seat Entertainment (RSE)
Systems
Consumer Electronics
________________________________________________________________ Maxim Integrated Products
General Description
75Ω
0.1µF
C
IN
IN
1
Applications
CLAMP
V
GND
CC
+5V
5
3
SYNC
SLICE
LEVEL
LPF
0.1µF
♦ 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
MAX7461EUK
SYNC
DETECTOR
TOP VIEW
PART
Loss-of-Sync Alarm
MAX7461
SYNC
FILTER
-40°C to +85°C
GND
GND
TEMP RANGE
LOS
IN
1
2
3
Ordering Information
SOT23-5
Functional Diagram
4
MAX7461
LOS
RO
Pin Configuration
V
CC
PIN-
PACKAGE
5 SOT23-5
1kΩ
4
5 V
LOS
CC
Features
PACKAGE
CODE
U5-2
1
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