DG449 Vishay Siliconix High Voltage Single SPDT Analog Switch in SOT23-8 DESCRIPTION FEATURES The DG449 is a dual supply single-pole/double-throw 15 V analog signal range On-resistance - R : 38 max. (SPDT) switches. On resistance is 38 and flatness is 2.6 DS(on) V logic supply not required max over the specified analog signal range. These analog L TTL CMOS input compatible switches were designed to provide high speed, low error Rail to rail signal handling switching of precision analog signals. The primary Dual or single supply operation application areas are in the routing and switching in telecommunications and test equipment. Combining low BENEFITS power, low leakages, low on-resistance and small physical Wide dynamic range size, the DG449 is also ideally suited for portable and battery Low signal errors and distortion powered industrial and military equipment. Break-before-make switching action Simple interfacing The DG449 operates either from a single + 7 V to 36 V Small SOT23-8ld package reduced board space supply or from dual 4.5 V to 20 V supplies. It is offered in Improved reliability the very popular, small SOT23-8 package. APPLICATIONS Precision test equipment Precision instrumentation Communications systems PBX, PABX systems Audio equipment Redundant systems PC multimedia boards Hard disc drives FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION DG449 TRUTH TABLE Logic NC NO 0 ON OFF 1OFF ON Logic0 0.8 V Logic1 2.4 V Document Number: 73897 www.vishay.com S11-0097-Rev. B, 24-Jan-11 1DG449 Vishay Siliconix ORDERING INFORMATION Temp. Range Package Part Number - 40 to 85 C 8-Pin SOT23 DG449DS-T1-E3 ABSOLUTE MAXIMUM RATINGS (T = 25 C, unless otherwise noted) A Symbol Limit Unit Parameter (Voltages Referenced to V-) V+ 44 25 GND V (V-) - 2 V to (V+) + 2 V a Digital Inputs , V , V no/nc COM or 30 mA, whichever occurs first Current , (Any Terminal) Continuous 30 mA Current (NO, NC or COM) Pulsed at 1 ms, 10 % duty cycle 100 - 65 to 150 Storage Temperature C c b 8-Pin SOT-23 Power Dissipation (Package) 675 mW Notes: a. Signals on NO, NC, COM, or IN exceeding V+ or V- will be clamped by internal diodes. Limit forward diode current to maximum current ratings. b. All leads welded or soldered to PC board. c. Derate 8.4 mW/C above 70 C. www.vishay.com Document Number: 73897 2 S11-0097-Rev. B, 24-Jan-11