DG409LDY-T1-E3

Overview

The DG409LDY-T1-E3 is a dual 4-channel differential analog multiplexer manufactured by Vishay Siliconix. It operates on single supplies from 2.7 V to 12 V or dual supplies of ±3 V to ±6 V. The device features a typical on-resistance of 17 Ω, enable turn-on time of 38 ns, and turn-off time of 18 ns. Leakage current is limited to 0.2 nA maximum with 1 pC charge injection. It utilizes BiCMOS technology for low power consumption and provides 2000 V ESD protection. The component is housed in a 16-pin SOIC package.

Feature Summary

• Pin-for-pin compatibility with industry standard DG408 and DG409 devices
• Guaranteed break-before-make switching action to prevent momentary crosstalk
• Supports TTL, CMOS, and LV logic interfaces at 3 V
• High off-isolation performance of 82 dB at 1 MHz

Applications

• Data acquisition systems
• Battery operated equipment
• Portable test equipment
• Sample and hold circuits
• Communication systems

Procurement Notes

Verify the specific suffix 'T1' indicates tape and reel packaging when sourcing. Confirm RoHS compliance status as indicated by the '-E3' designation. Ensure the operating voltage range aligns with the 2.7 V to 12 V single supply specification. Validate that the 16-pin SOIC footprint matches the design requirements.

Selection Notes

Select this part for applications requiring differential signal routing with low distortion. The DG409L offers improved performance over the standard DG409, including lower on-resistance and faster switching speeds. Consider the 16-pin SOIC package constraints and verify thermal dissipation limits for high-density layouts.

Part Context

This component belongs to the DG408L/DG409L series, which are low-voltage pin-for-pin compatible companion devices to the legacy DG408/DG409 lines. The DG409L specifically handles dual 4-channel differential configurations, whereas the DG408L manages single-ended 8-channel connections.

Replacement Considerations

DG409LDY-GE3

FAQ

What is the maximum analog signal range for the DG409LDY-T1-E3?

The analog signal range extends from V- to V+, allowing operation within the specified single supply (2.7 V to 12 V) or dual supply (±3 V to ±6 V) limits.

How does the DG409L handle channel switching to prevent interference?

It employs a guaranteed break-before-make switching action, which disconnects the previous channel before connecting the new one to protect against momentary crosstalk between adjacent channels.

What logic levels are compatible with the digital control inputs?

The device supports TTL, CMOS, and LV logic compatible with a 3 V supply, ensuring straightforward interface with various digital controllers.