DG2749DN-T1-E4

Analog Switches, Multiplexers, Demultiplexers Overview

The DG2749DN-T1-E4 is a dual SPST analog switch manufactured by Vishay Siliconix, built on sub-micro CMOS technology. It operates within a supply voltage range of 1.6 V to 4.3 V and features an ultra-low on-resistance of 0.4 Ω at 2.7 V and 0.3 Ω at 4.3 V. The device provides a -3 dB bandwidth up to 93 MHz, with turn-on/turn-off times of 25 ns maximum. It offers -100 dB crosstalk and -72 dB off-isolation at 100 kHz. Packaged in a miniQFN-8L (1.4 x 1.4 mm) footprint, it supports continuous currents up to 300 mA and includes latch-up protection exceeding 250 mA per JESD78.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Ultra-small physical footprint utilizing the miniQFN-8L package for efficient board space usage
• Low voltage logic threshold compatibility allowing operation with digital control circuits
• High fidelity signal switching capabilities suitable for audio applications
• Robust electrostatic discharge protection exceeding 7 kV HBM

Analog Switches, Multiplexers, Demultiplexers Applications

• Cellular phones
• Portable media players
• GPS devices
• PCMCIA cards
• Medical and test equipment

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free termination specifications prior to integration. Ensure storage conditions adhere to moisture sensitivity level requirements to maintain solderability and long-term reliability during assembly processes.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when low on-resistance and high bandwidth are critical for signal integrity in portable designs. The DG2749 variant specifically connects COM1 to NC1 and COM2 to NO2 based on logic states. Validate that the 1.4 V logic high threshold aligns with the system's digital control voltage levels to ensure proper switching functionality.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the DG274x family, which includes the DG2747 and DG2748 variants. While all three share identical electrical performance characteristics, they differ in internal pin configurations. The DG2749 specifically routes connections between common terminals and normally closed/open contacts differently than its counterparts, requiring careful schematic review during design implementation.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG2747DN-T1-E4 and DG2748DN-T1-E4 serve as functional electrical equivalents within the same series. Substitution requires verification of pinout compatibility due to differing internal connection schemes between the DG2747, DG2748, and DG2749 models.