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DG642 Datasheet(PDF) 1 Page - Vishay Siliconix |
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DG642 Datasheet(HTML) 1 Page - Vishay Siliconix |
1 / 10 page DG641/642/643 Vishay Siliconix Document Number: 70058 S-52433—Rev. E, 06-Sep-99 www.vishay.com S FaxBack 408-970-5600 4-1 Low On-Resistance Wideband/Video Switches FEATURES BENEFITS APPLICATIONS D Wide Bandwidth: 500 MHz D Low Crosstalk at 5 MHz: –85 dB D Low rDS(on): 5 W, DG642 D TTL Logic Compatible D Fast Switching: tON 50 ns D Single Supply Compatibility D High Current: 100 mA, DG642 D High Precision D Improved Frequency Response D Low Insertion Loss D Improved System Performance D Reduced Board Space D Low Power Consumption 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 Vp-p when off. An epitaxial layer prevents latchup. FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION TRUTH TABLEDG642 SW1, SW2 OFF ON DG641 IN1 IN2 D1 D2 S1 S2 V– V+ GND GND S4 S3 D4 D3 IN4 IN3 Dual-In-Line and SOIC 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Top View TRUTH TABLEDG641 Logic “0” v 0.8 V Logic “1” w 2.4 V Logic Switch 0 1 OFF ON Logic “0” v 0.8 V Logic “1” w 2.4 V Logic SW2 0 1 ON OFF Logic “0” v 0.8 V Logic “1” w 2.4 V Logic 0 1 DG642 D2 GND Dual-In-Line and SOIC S2 S1 IN D1 V+ V– 1 2 3 4 8 7 6 5 Top View 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Top View IN1 IN2 D1 D2 GND GND S1 S2 V– V+ S4 S3 GND GND D4 D3 Dual-In-Line and SOIC DG643 SW1 OFF ON SW3, SW4 ON OFF TRUTH TABLEDG643 |
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