DG451EQ-T1-E3

Analog Switches, Multiplexers, Demultiplexers Overview

The Vishay Siliconix DG451EQ-T1-E3 is a high-voltage quad single-pole single-throw (SPST) CMOS analog switch housed in a 16-pin TSSOP package. It features four independently selectable switches with a typical on-resistance of 4 Ω and a maximum of 5.3 Ω at ±15 V supplies. The device supports dual supply voltages from ±5 V to ±15 V or a single supply up to 36 V, handling continuous currents of 100 mA. Key electrical parameters include turn-on times up to 118 ns, turn-off times up to 97 ns, off-isolation of -60 dB at 1 MHz, and channel-to-channel crosstalk of -85 dB.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Four independent SPST switches designed for high-voltage signal routing
• Low on-resistance with minimal flatness for low-distortion audio applications
• TTL and CMOS compatible digital logic inputs
• Built-in electrostatic discharge protection

Analog Switches, Multiplexers, Demultiplexers Applications

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

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component against official Vishay datasheet specifications before integration. Confirm that the 16-TSSOP footprint matches your PCB layout requirements. Ensure power supply rails remain within the absolute maximum ratings to prevent permanent damage. Validate thermal dissipation limits under your specific operating conditions.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when high voltage tolerance and low distortion are required. The DG451 offers normally closed logic control, distinguishing it from the DG452. Consider the 16-TSSOP package constraints for space-limited designs. Verify compatibility with system logic levels and ensure adequate heat sinking if operating near maximum power dissipation limits.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the DG45x series, which includes pin-compatible variants DG452 and DG453. These devices share identical physical footprints and electrical characteristics but differ in internal logic configuration. The series is designed to replace electromechanical relays in compact solid-state applications requiring reliable analog signal switching.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The DG451EQ-T1-E3 is pin-compatible with the DG411EY-T1-E3 and DG411LDQ-T1-E3. When substituting, verify that the alternative device meets the required on-resistance and voltage rating specifications. Check for any differences in logic input polarity or switching speed that might affect circuit timing.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the maximum analog signal range supported by the DG451?

The device supports an analog signal range extending to the supply voltage rails, typically ±15 V with dual supplies or up to 36 V with a single supply.

How does the DG451 handle logic level compatibility?

It features TTL/CMOS compatible digital inputs with defined logic thresholds of 0.8 V and 2.4 V, ensuring operation with standard logic families.

What is the charge injection specification for this switch?

The charge injection is specified as 22 pC at room temperature with a load capacitance of 1 nF.