LMH6574_05 Datasheet, PDF (1/14 Pages) National Semiconductor (TI) – 4:1 High Speed Video Multiplexer

September 2005
LMH6574
4:1 High Speed Video Multiplexer
General Description
The LMH™6574 is a high performance analog multiplexer
optimized for professional grade video and other high fidelity
high bandwidth analog applications. The output amplifier
selects any one of four buffered input signals based on the
state of the two address bits. The LMH6574 provides a
400 MHz bandwidth at 2 V_PP output signal levels. Multimedia
and high definition television (HDTV) applications can ben-
efit from the LMH6574’s 0.1 dB bandwidth of 150 MHz and
its 2200 V/µs slew rate.
The LMH6574 supports composite video applications with its
0.02% and 0.05˚ differential gain and phase errors for NTSC
and PAL video signals while driving a single, back terminated
75Ω load. An 80 mA linear output current is available for
driving multiple video load applications.
The LMH6574 gain is set by external feedback and gain set
resistors for maximum flexibility.
The LMH6574 is available in the 14 pin SOIC package.
Features
n 500 MHz, 500 mV −3 dB bandwidth, A_V = 2
n 400 MHz, 2V_PP −3 dB bandwidth, A_V = 2
n 8 ns channel switching time
n 70 dB channel to channel isolation @ 10 MHz
n 0.02%, 0.05˚ diff. gain, phase
n 0.1 dB gain flatness to 150 MHz
n 2200 V/µs slew rate
n Wide supply voltage range: 6V (±3V) to 12V (±6V)
n −68 dB HD2 @ 5 MHz
n −84 dB HD3 @ 5 MHz
Applications
n Video router
n Multi input video monitor
n Instrumentation / Test equipment
n Receiver IF diversity switch
n Multi Channel A/D Driver
n Picture in Picture video switch
Connection Diagram
14-Pin SOIC
Truth Table
A1
A0
EN
1
1
0
1
0
0
0
1
0
0
0
0
X
X
1
X
X
X
SD
OUT
0
CH 3
0
CH2
0
CH1
0
CH 0
0
Disable
1
Shutdown
Top View
20119705
Ordering Information
Package
14-Pin SOIC
Part Number
LMH6574MA
LMH6574MAX
Package Marking
LH6574MA
Transport Media
55 Units/Rail
2.5k Units Tape and Reel
NSC Drawing
M14A
LMH™ is a trademark of National Semiconductor Corporation.
© 2005 National Semiconductor Corporation DS201197
www.national.com