DG418BDY

Analog Switches, Multiplexers, Demultiplexers Overview

The DG418BDY is a precision monolithic quad SPST CMOS analog switch manufactured by Vishay Siliconix. It operates with dual supplies of ±15 V or a single supply up to 36 V, providing an analog signal range of ±15 V. The device features a maximum on-resistance of 25 Ω at room temperature and 35 Ω across the full operating range. Switching times are specified with a maximum turn-on time of 89 ns and a turn-off time of 80 ns. It is housed in an 8-pin narrow SOIC package and supports an operating temperature range from -40 °C to +85 °C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• High-voltage silicon gate process ensures superior switching performance and high-voltage ratings.
• Epitaxial layer construction prevents latchup for improved reliability.
• TTL and CMOS compatible logic control simplifies interfacing.
• Low power consumption and low leakage currents support efficient board space usage.

Analog Switches, Multiplexers, Demultiplexers Applications

• Precision test equipment
• Precision instrumentation
• Battery powered systems
• Sample-and-hold circuits
• Military radios

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and compliance status. The base part number corresponds to the standard plastic narrow SOIC-8 package. Confirm that the required temperature range and RoHS directive compliance match the project specifications before finalizing procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a single-channel SPST configuration within a quad package is required. Ensure the application voltage does not exceed the absolute maximum ratings of ±20 V. Verify that the logic input levels align with the TTL/CMOS compatibility requirements. Consider thermal derating if the power dissipation exceeds 400 mW in the SOIC-8 package.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG418BDY belongs to the DG417B/DG418B/DG419B series of precision monolithic quad SPST CMOS analog switches. While sharing the same physical package and core technology, it differs from the DG417B in its control logic polarity. The DG419B variant includes break-before-make switching capabilities, whereas the DG418B provides standard SPST switching with inverted logic relative to the DG417B.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Public confirmed substitute part numbers include DG418BDY-E3 and DG418BDY-T1. These variants maintain the same functional specifications and package dimensions while addressing specific environmental compliance or packaging format requirements.