DG641, DG642, DG643
Vishay Siliconix
Low On-Resistance Wideband/Video Switches
DESCRIPTION
The DG641, DG642, DG643 are high performance
monolithic video switches designed for switching wide
bandwidth analog and digital signals. DG641 is a quad
SPST, DG642 is a single SPDT, and DG643 is a dual SPDT
function. These devices have exceptionally low
on-resistances (5
typ-DG642),
low capacitance and high
current handling capability.
To achieve TTL compatibility, low channel capacitances and
fast switching times, the DG641, DG642, DG643 are built on
the Vishay Siliconix proprietary D/CMOS process. Each
switch conducts equally well in both directions when on, and
blocks up to 14 V
p-p
when off. An epitaxial layer prevents
latchup.
FEATURES
•
•
•
•
•
•
Wide bandwidth: 500 MHz
Low crosstalk at 5 MHz: - 85 dB
Low R
DS(on)
: 5
,
DG642
TTL logic compatible
Fast switching: t
ON
50 ns
Single supply compatibility
•
High current: 100 mA, DG642
High precision
Improved frequency response
Low insertion loss
Improved system performance
Reduced board space
Low power consumption
RF and video switching
RGB switching
Video routing
Cellular communications
ATE
Radar/FLIR systems
Satellite receivers
Programmable filters
BENEFITS
•
•
•
•
•
•
•
•
•
•
•
•
•
•
APPLICATIONS
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
Dual-In-Line and SOIC
IN
1
D
1
S
1
V-
GND
S
4
D
4
IN
4
1
2
3
4
DG641
5
6
7
8
Top View
16 IN
2
15 D
2
14 S
2
13 V+
12 GND
11 S
3
10 D
3
9
IN
3
S
1
D
1
V
-
GND
IN
1
Dual-In-Line and SOIC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
IN
2
D
2
GND
S
2
V+
S
3
GND
D
3
Dual-In-Line and SOIC
D
1
1
2
3
4
8
7
6
IN
V+
D
2
S
2
GND
S
1
V
-
S
4
GND
Top View
D
4
DG642
5
DG643
Top View
9
TRUTH TABLE
(DG641)
Logic
0
1
Logic “0”
0.8
V
Logic “1”
2.4 V
Document Number: 70058
S11-0154-Rev. F, 31-Jan-11
Switch
OFF
ON
TRUTH TABLE
(DG642)
Logic
0
1
Logic “0”
0.8
V
Logic “1”
2.4 V
SW
1
OFF
ON
SW
2
ON
OFF
TRUTH TABLE
(DG643)
Logic
0
1
SW
1
, SW
2
OFF
ON
SW
3
, SW
4
ON
OFF
Logic “0”
0.8
V
Logic “1”2.4 V
www.vishay.com
1
VISHAY [ VISHAY TELEFUNKEN ]
