DG403DY-T1

Overview

The DG403DY-T1 is a low-power, high-speed CMOS analog switch manufactured by Vishay Siliconix. It features two dual-pole single-throw (DPST) switches in a 16-pin narrow SOIC package. The device supports a maximum supply voltage of 44 V and an analog signal range of ±15 V. Key electrical parameters include a typical on-resistance of 30 Ω with a maximum of 45 Ω at room temperature, rising to 55 Ω across the full operating temperature range. Switching times are specified as a maximum turn-on time of 150 ns and a maximum turn-off time of 100 ns. The component operates within a temperature range of -40 °C to +85 °C.

Feature Summary

• Features break-before-make switching action for SPDT configurations to prevent signal shorting during transitions.
• Built on a proprietary high-voltage silicon-gate process that ensures superior switch performance and prevents latchup via an epitaxial layer.
• Provides TTL and CMOS logic compatibility for simple interfacing with standard digital control circuits.

Applications

• Audio and video signal routing
• Sample-and-hold circuits
• Dual slope integrators
• Band-pass switched capacitor filters

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm compliance status and packaging type. The 'T1' suffix indicates reel packaging. Confirm RoHS directive 2002/95/EC compliance through the '-E3' variant if lead-free terminations are required for the assembly process.

Selection Notes

Select this component when designing portable or battery-powered systems requiring low power consumption alongside fast switching speeds. Ensure the application logic levels align with the specified input thresholds: Logic '0' requires ≤ 0.8 V and Logic '1' requires ≥ 2.4 V relative to the logic supply voltage VL.

Part Context

This part belongs to the DG40x series of monolithic analog switches designed for precision signal switching. The DG403 specifically provides two DPST switches, distinguishing it from the DG401 which offers two SPST switches and the DG405 which provides four SPST switches within the same package footprint.

Replacement Considerations

The DG403DY-E3 serves as the direct lead-free replacement for the DG403DY-T1. Both variants share identical functional specifications and pinouts, differing only in termination material and packaging configuration.

FAQ

What is the guaranteed switching behavior for the DG403?

The DG403 guarantees a break-before-make switching action for its SPDT configurations, ensuring that one switch opens before the other closes to prevent signal overlap.

How does the on-resistance vary with temperature?

The on-resistance has a maximum value of 45 Ω at room temperature and increases to a maximum of 55 Ω across the full operating temperature range of -40 °C to +85 °C.

What are the logic input voltage requirements?

A Logic '0' is defined as a voltage ≤ 0.8 V, while a Logic '1' is defined as a voltage ≥ 2.4 V.