DG2521DV-T1-E3

Analog Switches, Multiplexers, Demultiplexers Overview

The DG2521DV-T1-E3 is a single-pole double-throw (SPDT) analog switch manufactured by Vishay Siliconix. It operates on a single supply voltage ranging from 1.8 V to 5.5 V and features an on-resistance of typically 0.4 Ω at 4.5 V, with a maximum of 1.0 Ω. The device incorporates overcurrent protection that activates when the voltage drop across the switch reaches approximately 0.6 V. It supports full rail signal swing and is compatible with +1.6 V logic levels. The component is housed in a TSOP-6 surface-mount package and functions within a temperature range of -40 °C to +85 °C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Integrated overcurrent protection circuitry for short-circuit handling
• Low on-resistance ensuring high linearity and minimal signal distortion
• Compatible with low-voltage logic inputs across the entire operating range

Analog Switches, Multiplexers, Demultiplexers Applications

• USB and UART signal switching
• Audio and video signal routing
• Cellular phone applications
• Media players and modems
• Hard drives and PCMCIA interfaces

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm lead-free termination compliance. Confirm the exact package variant matches the design requirements before procurement. Ensure the selected part number aligns with the required temperature range and electrical specifications for the target application environment.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring sub-ohm on-resistance and robust overcurrent protection in compact designs. Verify that the input logic voltage thresholds meet the system requirements, as the device supports +1.6 V logic compatibility. Consider the power dissipation limits and thermal derating characteristics when designing the PCB layout for sustained operation.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the DG2520/DG2521 series of low-voltage SPDT analog switches. The DG2521 variant specifically provides a make-before-break switching sequence, which helps prevent signal interruptions during channel transitions. This distinguishes it from the DG2520, which utilizes a break-before-make sequence.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct substitutes include the DG2520DV-T1-E3, which shares identical pinout and electrical characteristics but employs a break-before-make switching sequence instead of make-before-break.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the overcurrent protection mechanism function?

The protection circuitry activates when the voltage drop across the switch reaches a typical threshold of 0.6 V. In the event of a direct or sustained short circuit, the switch pulses on for less than 1 µs and then turns off, attempting to turn back on after 5 ms.

What is the difference between the DG2520 and DG2521 variants?

The primary difference lies in their switching sequences. The DG2521 is designed with a make-before-break sequence, whereas the DG2520 utilizes a break-before-make sequence.

Is the device compatible with standard logic levels?

Yes, the DG2521 is compatible with +1.6 V logic levels throughout its entire operating voltage range, making it suitable for low-voltage digital control systems.