DG540/541/542
Vishay Siliconix
Wideband/Video “T” Switches
FEATURES
D
D
D
D
D
D
D
Wide Bandwidth: 500 MHz
Low Crosstalk: –85 dB
High Off-Isolation: –80 dB @ 5 MHz
“T” Switch Configuration
TTL and CMOS Logic Compatible
Fast Switching—t
ON
: 45 ns
Low r
DS(on)
: 30
W
BENEFITS
D
D
D
D
D
D
D
Flat Frequency Response
High Color Fidelity
Low Insertion Loss
Improved System Performance
Reduced Board Space
Reduced Power Consumption
Improved Data Throughput
APPLICATIONS
D
D
D
D
D
D
D
D
RF and Video Switching
RGB Switching
Local and Wide Area Networks
Video Routing
Fast Data Acquisition
ATE
Radar/FLR Systems
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
Dual-In-Line
IN
1
D
1
GND
S
1
V–
GND
S
4
GND
D
4
IN
4
1
2
3
4
5
6
7
8
9
10
Top View
20
19
18
17
16
15
14
13
12
11
IN
2
D
2
GND
S
2
V+
GND
S
3
GND
9
D4
D
3
IN
3
10 11 12 13
IN3
IN4
D3
GND
S
1
V–
GND
S
4
GND
4
5
6
7
8
18
17
16
15
14
GND
S
2
V+
GND
S
3
GND
DG540
PLCC
IN 1
IN 2
D1
D2
3
2
1
20 19
TRUTH TABLE
Logic
0
1
Switch
OFF
ON
Logic “0”
v
0.8 V
1
Logic “1”
w
2 V
Top View
Document Number: 70055
S-00399—Rev. G, 13-Sep-99
www.vishay.com
S
FaxBack 408-970-5600
4-1
VISHAY [ VISHAY TELEFUNKEN ]
