DG444DY-T

Analog Switches, Multiplexers, Demultiplexers Overview

The DG444DY-T is a monolithic quad single-pole single-throw (SPST) CMOS analog switch manufactured by Renesas Electronics Corporation. It features four independent switches in a 16-pin SOIC-N package, designed for signal routing and multiplexing applications. The device supports single or dual power supplies, operating from +5V to +34V single supply or ±5V to ±20V dual supply. Key electrical parameters include a maximum on-resistance of 85 Ohms, a maximum switching time of 250 ns, and an off-time of 140 ns. It handles a DC switch current of 30 mA with a maximum power dissipation of 640 mW. The component operates within a temperature range of -40°C to +85°C and draws a maximum supply current of 1 µA.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Integrates four independent SPST analog switches on a single monolithic CMOS chip
• Supports both single-ended and split power supply configurations for flexible system design
• Features TTL and CMOS compatible digital inputs for direct logic interfacing
• Provides low charge injection characteristics suitable for precision sample-and-hold circuits

Analog Switches, Multiplexers, Demultiplexers Applications

• Data acquisition systems requiring signal multiplexing
• Sample-and-hold circuits in instrumentation
• Automatic test equipment signal routing
• Communication systems for line termination and switching

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging when sourcing. Confirm RoHS compliance status through official datasheets as manufacturing processes evolve. Check for obsolescence notices from Renesas, as older Siliconix-derived parts may have limited availability. Ensure the SOIC-N package dimensions match your PCB footprint requirements before finalizing procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when four independent analog switches are required in a compact surface-mount package. Compare on-resistance and leakage current specifications against alternative DG44x series variants if higher precision is needed. Verify that the 85 Ohm on-resistance meets the voltage drop requirements of your application. Consider the 34V single-supply limit when designing for high-voltage signal paths.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG444 belongs to the DG44x family of analog switches originally developed by Siliconix and now produced by Renesas Electronics. This family is known for its robust CMOS construction and compatibility with standard logic families. The DG444 specifically offers four channels, distinguishing it from the dual-channel DG442 and octal-channel DG445 variants within the same series.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG444DYZ-T: Pin-compatible alternative from Renesas/Intersil with identical electrical specifications and SOIC-N package.