LMH6574MA NSC [National Semiconductor], LMH6574MA Datasheet

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LMH6574MA

Manufacturer Part Number
LMH6574MA
Description
4:1 High Speed Video Multiplexer
Manufacturer
NSC [National Semiconductor]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LMH6574MAX/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
Part Number:
LMH6574MAX/NOPB
0
© 2004 National Semiconductor Corporation
LMH6574
4:1 High Speed Video Multiplexer
General Description
The LMH
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
high definition television (HDTV) applications can benefit
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.
Connection Diagram
Ordering Information
LMH
14-Pin SOIC
is a trademark of National Semiconductor Corporation.
Package
6574 is a high performance analog multiplexer
PP
14-Pin SOIC
output signal levels. Multimedia and
Top View
LMH6574MAX
Part Number
LMH6574MA
DS201197
20119705
Package Marking
LH6574MA
Features
n 500 MHz, 500 mV −3 dB bandwidth, A
n 400 MHz, 2V
n 8 ns channel switching time
n 70 dB channel to channel isolation
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 (
n −68 dB HD2
n −84 dB HD3
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
Truth Table
A1
X
X
1
1
0
0
2.5k Units Tape and Reel
Transport Media
A0
X
X
1
0
1
0
55 Units/Rail
PP
@
@
5 MHz
5 MHz
−3 dB bandwidth, A
EN
X
0
0
0
0
1
±
3V) to 12V (
@
V
SD
0
0
0
0
0
1
=2
10 MHz
V
NSC Drawing
=2
November 2004
M14A
www.national.com
Shutdown
±
Disable
CH 3
CH 0
6V)
OUT
CH2
CH1

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LMH6574MA Summary of contents

Page 1

... Connection Diagram 14-Pin SOIC Top View Ordering Information Package Part Number LMH6574MA 14-Pin SOIC LMH6574MAX LMH is a trademark of National Semiconductor Corporation. ™ © 2004 National Semiconductor Corporation Features n 500 MHz, 500 mV −3 dB bandwidth 400 MHz channel switching time channel to channel isolation n 0.02%, 0.05˚ ...

Page 2

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance Human Body Model Machine Model + − Supply Voltage (V − (Note 3) OUT ...

Page 3

Electrical Characteristics ± 5V 100Ω V/V, T =25 ˚C, Unless otherwise specified. Bold numbers specify limits at temperature extremes Symbol Parameter ICC Supply Current (Note 5) Supply Current ...

Page 4

Electrical Characteristics ± 3.3V 100Ω V/V; Unless otherwise specified Symbol Parameter IBN Input Bias Current (Note 7) PSRR Power Supply Rejection Ratio ICC Supply Current VIH Logic High Threshold ...

Page 5

Typical Performance Characteristics specified. Frequency Response vs. V Frequency Response vs. Capacitive Load Suggested Value ± 5V 100Ω OUT 20119702 Suggested R 20119714 vs. Gain 20119701 5 = ...

Page 6

Typical Performance Characteristics specified. (Continued) Pulse Response 2V Closed Loop Output Impedance PSRR vs. Frequency www.national.com ± 5V 100Ω 20119729 Closed Loop Output Impedance 20119708 20119704 6 = =575Ω; unless ...

Page 7

Typical Performance Characteristics specified. (Continued) SHUTDOWN Switching ENABLE Switching HD2 vs. Frequency ± 5V 100Ω Shutdown Glitch 20119721 20119726 HD3 vs. Frequency 20119733 7 = =575Ω; unless otherwise F G ...

Page 8

Typical Performance Characteristics specified. (Continued) HD2 vs HD2 vs. V OUT Minimum V vs. I OUT OUT www.national.com ± 5V 100Ω 20119707 20119711 (Note 7) 20119712 8 = =575Ω; ...

Page 9

Typical Performance Characteristics specified. (Continued) Crosstalk vs. Frequency ± 5V 100Ω 20119735 9 = =575Ω; unless otherwise F G Off Isolation 20119731 www.national.com ...

Page 10

Application Notes GENERAL INFORMATION The LMH6574 is a high-speed 4:1 analog multiplexer, opti- mized for very high speed and low distortion. With selectable gain and excellent AC performance, the LMH6574 is ideally suited for switching high resolution, presentation grade video ...

Page 11

Application Notes (Continued) frequency response is a function the recommended value 575Ω. For other gains see F the chart “Suggested R vs Gain”. Generally, lowering R F from the recommended value will peak the ...

Page 12

Application Notes (Continued) FIGURE 5. Delay Circuit Implementation important in the end application to make sure that no two inputs are presented to the output at the same time, an optional delay block can be added, to ...

Page 13

Other Applications (Continued) output under capacitive loading. Capacitive loads 120 pF are the most critical, causing ringing, frequency response peaking and possible oscillation. The chart “Sug- gested R vs. Cap Load” gives a recommended value for OUT ...

Page 14

Other Applications (Continued) ESD PROTECTION The LMH6574 is protected against electrostatic discharge (ESD) on all pins. The LMH6574 will survive 2000V Human Body model and 200V Machine model events. Under normal operation the ESD diodes have no effect on circuit ...

Page 15

Physical Dimensions inches (millimeters) unless otherwise noted National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and ...

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