DG540/541/542
Vishay Siliconix
Wideband/Video “T” Switches
FEATURES
BENEFITS
APPLICATIONS
D Wide Bandwidth: 500 MHz
D Low Crosstalk: –85 dB
D Flat Frequency Response
D High Color Fidelity
D RF and Video Switching
D RGB Switching
D High Off-Isolation: –80 dB @ 5 MHz
D “T” Switch Configuration
D Low Insertion Loss
D Local and Wide Area Networks
D Video Routing
D Improved System Performance
D Reduced Board Space
D Reduced Power Consumption
D Improved Data Throughput
D TTL and CMOS Logic Compatible
D Fast Switching—tON: 45 ns
D Low rDS(on): 30 W
D Fast Data Acquisition
D ATE
D Radar/FLR Systems
D Video Multiplexing
DESCRIPTION
The DG540/541/542 are high performance monolithic
wideband/video switches designed for switching RF, video
and digital signals. By utilizing a “T” switch configuration on
each channel, these devices achieve exceptionally low
crosstalk and high off-isolation. The crosstalk and off-isolation
of the DG540 are further improved by the introduction of extra
GND pins between signal pins.
To achieve TTL compatibility, low channel capacitances and
fast switching times, the DG540 family is built on the
Vishay Siliconix proprietary D/CMOS process. Each switch
conducts equally well in both directions when on.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG540
DG540
Dual-In-Line
PLCC
IN
D
IN
D
1
2
20
19
18
17
16
15
14
13
12
11
1
2
1
2
3
2
1
20 19
GND
GND
3
4
5
6
7
8
18
17
16
S
GND
TRUTH TABLE
1
S
1
S
2
4
V–
S
2
Logic
Switch
V–
V+
5
GND
V+
0
1
OFF
ON
GND
GND
S
4
15 GND
14
6
GND
S
3
S
4
S
3
7
Logic “0” v 0.8 V
Logic “1” w 2 V
GND
GND
8
9
10 11 12 13
Top View
D
D
3
9
4
IN
4
IN
3
10
Top View
Document Number: 70055
S-00399—Rev. G, 13-Sep-99
www.vishay.com S FaxBack 408-970-5600
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