DG409LDQ-T1-E3

Analog Switches, Multiplexers, Demultiplexers Overview

The DG409LDQ-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 high off-isolation of 82 dB at 1 MHz. The component is housed in a 16-pin TSSOP package and supports an operating temperature range of -40 °C to +85 °C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Pin-for-pin compatibility with standard DG408 and DG409 devices
• Guaranteed break-before-make switching action to prevent crosstalk
• Low charge injection of 1 pC for high signal integrity
• TTL, CMOS, and LV logic compatible

Analog Switches, Multiplexers, Demultiplexers Applications

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

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'T1' indicates tape and reel packaging when sourcing this part number. Confirm RoHS compliance status as indicated by the '-E3' designation. Ensure the TSSOP-16 package dimensions match the target PCB footprint requirements before finalizing procurement orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the DG409LDQ variant specifically for applications requiring dual differential channel routing rather than single-ended multiplexing. Verify that the supply voltage range aligns with the 2.7 V to 12 V single or ±3 V to ±6 V dual supply specifications. Consider the 17 Ω typical on-resistance for signal path loss calculations.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the DG408L/DG409L series, which are low-voltage companion devices to the industry-standard DG408/DG409. The L-series offers improved performance metrics including lower on-resistance, faster switching times, and reduced leakage compared to the original generation.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG409LDY-T1-E3 (SOIC-16 package)

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the maximum analog signal range for the DG409LDQ-T1-E3?

The analog signal range extends from V- to V+, allowing operation within the specified supply voltage limits.

How does the DG409LDQ handle adjacent channel interference?

It employs guaranteed break-before-make switching action to protect against momentary crosstalk between adjacent channels.

What is the typical off-isolation performance at 1 MHz?

The device provides 82 dB of off-isolation at a frequency of 1 MHz.