LMH6574
LMH6574 is 4:1 High Speed Video Multiplexer manufactured by National Semiconductor.
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 VPP output signal levels. Multimedia and high definition television (HDTV) applications can benefit from the LMH6574’s 0.1 d B bandwidth of 150 MHz and its 2200 V/µs slew rate. The LMH6574 supports posite 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 m A 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 n n n n n n n n n 500 MHz, 500 m V
- 3 d B bandwidth, AV=2 400 MHz, 2VPP
- 3 d B bandwidth, AV=2 8 ns channel switching time 70 d B channel to channel isolation @ 10 MHz 0.02%, 0.05˚ diff. gain, phase 0.1 d B gain flatness to 150 MHz 2200 V/µs slew rate Wide supply voltage range: 6V ( ± 3V) to 12V ( ± 6V)
- 68 d B HD2 @ 5 MHz
- 84 d B HD3 @ 5 MHz
Applications n n n n n n Video router Multi input video monitor Instrumentation / Test equipment Receiver IF diversity switch Multi Channel A/D Driver Picture in Picture video switch
Connection Diagram
14-Pin SOIC
Truth Table
A1 1 1 0 0 X X A0 1 0 1 0 X X EN 0 0 0 0 1 X SD 0 0 0 0 0 1 OUT CH 3 CH2 CH1 CH 0 Disable Shutdown
Top View
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.
© 2004 National Semiconductor Corporation
DS201197
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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified...