DG641 Datasheet, PDF (1/10 Pages) Vishay Siliconix – Low On-Resistance Wideband/Video Switches

DG641/642/643
Vishay Siliconix
Low On-Resistance Wideband/Video Switches
FEATURES
D Wide Bandwidth: 500 MHz
D Low Crosstalk at 5 MHz: –85 dB
D Low r_DS(on): 5 W, DG642
D TTL Logic Compatible
D Fast Switching: t_ON 50 ns
D Single Supply Compatibility
D High Current: 100 mA, DG642
BENEFITS
D High Precision
D Improved Frequency Response
D Low Insertion Loss
D Improved System Performance
D Reduced Board Space
D Low Power Consumption
APPLICATIONS
D RF and Video Switching
D RGB Switching
D Video Routing
D Cellular Communications
D ATE
D Radar/FLIR Systems
D Satellite Receivers
D Programmable Filters
DESCRIPTION
The DG641/642/643 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 W typ—DG642), low
capacitance and high current handling capability.
To achieve TTL compatibility, low channel capacitances and
fast switching times, the DG641/642/643 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.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
Dual-In-Line and SOIC
IN₁ 1
D_{1 2}
S₁ 3
V– ₄
GND 5
S_{4 6}
D_{4 7}
IN₄ 8
DG641
Top View
16 IN2
15 ^D2
14 S2
13 ^V+
12 GND
11 ^S3
10 D3
9 IN₃
Dual-In-Line and SOIC
S_{1 1}
D_{1 2}
V– ₃
GND ₄
DG642
Top View
8 ^IN
7 ^V+
6 ^D2
5 ^S2
TRUTH TABLEĊDG641
Logic
Switch
0
OFF
1
ON
Logic “0” v 0.8 V
Logic “1” w 2.4 V
Document Number: 70058
S-52433—Rev. E, 06-Sep-99
TRUTH TABLEĊDG642
Logic
0
SW₁
OFF
SW₂
ON
1
ON
OFF
Logic “0” v 0.8 V
Logic “1” w 2.4 V
Dual-In-Line and SOIC
IN_{1 1}
D_{1 2}
GND ₃
S_{1 4}
V– ₅
S_{4 6}
GND ₇
D_{4 8}
DG643
Top View
16 ^IN2
15 ^D2
14 ^GND
13 ^S2
12 ^V+
11 ^S3
10 ^GND
9 ^D3
TRUTH TABLEĊDG643
Logic
0
SW₁, SW₂
OFF
SW₃, SW₄
ON
1
ON
OFF
Logic “0” v 0.8 V
Logic “1” w 2.4 V
www.vishay.com S FaxBack 408-970-5600
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