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DG458 Datasheet(PDF) 1 Page - Vishay Siliconix |
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DG458 Datasheet(HTML) 1 Page - Vishay Siliconix |
1 / 10 page Vishay Siliconix DG458/459 Document Number: 70064 S-71155–Rev. G, 11-Jun-07 www.vishay.com 1 Fault-Protected Single 8-Ch/Differential 4-Ch Analog Multiplexers FEATURES • Fault and Overvoltage Protection • All Channels Off When Power Off • Latchup-Proof • Fast Switching - TA: 200 ns • Break-Before-Make Switching • Low On-Resistance: 180 Ω • Low Power Consumption: 3 mW • TTL and CMOS Compatible Inputs BENEFITS • Improved Ruggedness • Power Loss Protection • Prevents Adjacent Channel Crosstalk • Standard Logic Interface • Superior Accuracy • Fast Settling Time APPLICATIONS • Data Acquisition Systems • Industrial Process Control Systems • Avionics Test Equipment • High-Rel Control Systems • Telemetry DESCRIPTION The DG458 and DG459 are 8-channel single-ended and 4-channel differential analog multiplexers, respectively, incorporating fault protection. A series n-p-n MOSFET structure provides device and signal-source protection in the event of power loss or overvoltages. Under fault conditions the multiplexer input (or output) appears as an open circuit and only a few nanoamperes of leakage current will flow. This protects not only the multiplexer and the circuitry following it, but also protects the sensors or signal sources which drive the multiplexer. The DG458 and DG459 can withstand continuous overvoltage inputs up to ± 35 V. All digital inputs have TTL compatible logic thresholds. Break-before-make operation prevents channel-to-channel interference. The DG458 and DG459 are improved pin-compatible replacements for HI-508A/509A and MAX358/359 multiplexers. FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION * Pb containing terminations are not RoHS compliant, exemptions may apply S3 A0 S6 D S4 A1 S8 S7 EN Dual-In-Line A2 V- GND S1 V+ S2 S5 Decoders/Drivers 1 2 3 4 5 6 7 16 15 14 13 12 11 10 Top View 89 DG458 9 A0 Da A1 Db EN GND V- V+ S1a S1b S2a S2b S3a S3b S4a S4b Dual-In-Line Decoders/Drivers 1 2 3 4 5 6 7 16 15 14 13 12 11 10 Top View 8 DG459 Available Pb-free RoHS* COMPLIANT |
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