DG419LDY-T1

Analog Switches, Multiplexers, Demultiplexers Overview

The DG419LDY-T1 is a single-channel SPDT analog switch manufactured by Vishay Siliconix, housed in an SOIC-8 surface-mount package. It operates on dual supplies ranging from -15 V to +15 V or a single supply up to 30 V. The device features a maximum on-resistance of 18.5 Ohms and supports a continuous DC switch current of 30 mA. Switching performance includes a maximum turn-on time of 41 ns and a maximum turn-off time of 32 ns. Power dissipation is rated at 400 mW, with a maximum supply current of 1 uA. The component functions within an industrial temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• CMOS logic interface compatible with standard TTL and CMOS control signals
• Low power consumption suitable for battery-operated systems
• High isolation between switched channels

Analog Switches, Multiplexers, Demultiplexers Applications

• Signal routing in data acquisition systems
• Audio signal switching applications
• Instrumentation front-end multiplexing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix T1 indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status as some variants may differ. Check for obsolescence notices from Vishay, as older siliconix parts often face discontinuation. Ensure the SOIC-8 footprint matches the target PCB design constraints before finalizing procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this part for applications requiring low leakage and moderate speed switching. Compare on-resistance specifications against similar DG series devices if lower resistance is needed. Verify that the 18.5 Ohm max resistance meets system accuracy requirements. Consider thermal dissipation limits given the 400 mW rating in small packages.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the DG419 family of analog switches. It shares functional similarities with other Vishay Siliconix SPDT switches but offers specific voltage and speed characteristics. The DG419 series is widely used in general-purpose analog switching tasks where CMOS compatibility is required.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG419LDY-T1-E3 is a verified lead-free variant of the same electrical specification. DG419DY-E3 is a related part number within the same product line offering similar functionality.