Vishay DG409DY-E3 Dual 4-Channel Analogue Multiplexer IC SOIC-16

The Vishay DG409DY-E3 is a precision, dual 4-channel differential analogue multiplexer integrated circuit. It is engineered to connect one of four differential input signals to a common dual output, with the channel selection determined by a simple 2-bit binary address. This design makes it an essential component for routing analogue signals in complex electronic systems where accuracy and reliability are paramount.

A key feature is its break-before-make switching action, which prevents momentary crosstalk or shorting between adjacent channels during switching, thereby protecting signal integrity. Each ON channel conducts current equally well in both directions, offering excellent bidirectional performance. In the OFF state, channels effectively block voltages up to the power supply rails, ensuring good isolation.

The device includes an enable function that allows the user to reset the entire multiplexer/de-multiplexer to an all-switches-OFF state. This is particularly useful for stacking several devices together to increase channel count without interference. All digital control inputs, including the address (Ax) and enable lines, are fully TTL-compatible over the entire specified operating temperature range, simplifying interface with logic circuits.

Advantages and Applications

Designed for robustness and efficiency, this IC offers several performance benefits: single or dual supply capability, reduced switching errors and signal glitching, improved data throughput, and lower overall power consumption. Its increased ruggedness makes it suitable for demanding environments.

Typical applications span industrial automation, signal processing systems, and medical instrumentation, where precise analogue signal routing is critical. Its surface-mount SOIC package is compact and designed for modern PCB assembly.

Key Specifications

• IC Function: Dual 4-Channel Analoge