Features: Wide Bandwidth: 500 MHz
Low Crosstalk at 5 MHz: 85 dB
Low rDS(on): 5 DG642
TTL Logic Compatible
Fast Switching: tON 50 ns
Single Supply Compatibility
High Current: 100 mA, DG642ApplicationRF and Video Switching
RGB Switching
Video Routing
Cellular Communications
ATE
Radar/FLIR Systems
Satellite Receivers
Programmable FiltersPinout
SpecificationsV+ to GND . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 0.3 V to +21 V
V+ to V . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 0.3 V to +21 V
V to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 V to +0.3 V
Digital Inputs .. . . . . . . ... . . . ... . . . . . . . (V) 0.3 V to (V+) + 0.3 V
or 20 mA, whichever occurs first
VS, VD . . . . . . . . . . . . . . . . . . . . . . . .. . . (V) 0.3 V to (V) + 14 V
or 20 mA, whichever occurs first
Current (any terminal) Continuous . . . . . . . . . . . . . . . . . . . . . 20 mA
Continuous Current S or D: DG641/643 . . .. . . . . . . . . . . . . . . 75 mA
DG642 . . . .. . . . . . . . . . . . . . . . . 100 mA
Current, S or D (Pulsed 1 ms, 10% duty cycle max)
DG641/643 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA
DG642 . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . . .. . . . . . . . . . . . 300 mA
Storage Temperature . . . . . . . . . . . . . . . . . . . . .. . . . . . . 65 to 125
Power Dissipation (Package)b
8-Pin Plastic DIP and Narrow SOICc . . . . . . . . . . . . . . . . . . . . . 300 mW
16-Pin Plastic DIPd . . . . . . . . . . . . . . . .. . . . . . . . . . . . . .. . . . . 470 mW
16-Pin Narrow SOICe . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 600 mW
Notes:
a. Signals on SX, DX, or INX exceeding V+ or V will be clamped by internal diodes. Limit forward diode current to maximum current ratings.
b. Derate7.6 mW/above 75
c. Derate6 mW/above 75
d. Derate 80 mW/above 75
DescriptionLow On-Resistance Wideband/Video Switches
The DG641/642/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 DG641/642/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 Vp-p when off. An epitaxial layer prevents latchup.
DG643 Data Sheet
