DG455EQ-T1-E3

Overview

The DG455EQ-T1-E3 is a high voltage quad SPST CMOS analog switch manufactured by Vishay Siliconix in a 16-lead TSSOP package. It features four independently selectable switches with a typical on-resistance of 4 ohms and flatness of 0.2 ohms. The device supports dual supplies of ±5 V to ±15 V or a single supply of 12 V, handling signals up to the supply rails. Key electrical parameters include a maximum supply rating of 44 V, continuous current of 100 mA, turn-on time of 80 ns, and turn-off time of 60 ns at ±15 V. Operating temperature ranges from -40 °C to +125 °C.

Feature Summary

• Normally open configuration for digital logic control inputs
• High voltage capability with 44 V maximum supply rating
• Low on-resistance with minimal flatness for low distortion audio switching
• TTL and CMOS compatible logic thresholds without requiring VL supply

Applications

• Audio and video signal switching
• Precision automatic test equipment
• Relay replacement
• Communications systems
• Sample and hold systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the package type and temperature range. Ensure compatibility with existing PCB footprints for the 16-lead TSSOP format. Confirm that the normally open logic state aligns with the system design requirements before finalizing procurement.

Selection Notes

Select this component when a normally open switch configuration is required within the DG454 series family. It serves as a direct alternative to the DG411 series but eliminates the need for a separate VL supply pin. Verify that the 4-ohm on-resistance meets the signal integrity requirements for the intended application bandwidth.

Part Context

This part belongs to the DG454/DG455/DG456 family of high voltage analog switches. The DG455 variant specifically provides a normally open (NO) logic sense, distinguishing it from the DG454 (normally closed) and DG456 (mixed NC/NO) configurations. All variants share identical pinouts and electrical characteristics except for the logic control inversion.

Replacement Considerations

DG454EQ-T1-E3

FAQ

Does the DG455 require a separate VL supply voltage?

No, the DG455 does not require a VL supply voltage, unlike the DG411 series.

What is the difference between DG454 and DG455?

The primary difference is the digital logic control input; DG454 is normally closed (NC) while DG455 is normally open (NO).

Can the DG455 handle bipolar signals?

Yes, the analog signal range extends to the supply voltage rails, allowing it to handle bipolar signals when using dual supplies.