DG458, DG459 Vishay Siliconix Fault-Protected Single 8-Ch/Differential 4-Ch Analog Multiplexers 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 contin...

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