DG445BDY-T1

Analog Switches, Multiplexers, Demultiplexers Overview

The DG445BDY-T1 is a monolithic quad SPST CMOS analog switch manufactured by Vishay Siliconix. It operates in a 16-pin Narrow SOIC package with surface-mount installation. The device supports dual supplies of ±15 V or a single supply up to 12 V, drawing a maximum power supply current of 1 µA. Key electrical parameters include a maximum on-resistance of 80 Ω, a maximum turn-on time of 300 ns, and a maximum turn-off time of 200 ns. It functions within an operating temperature range of -40 °C to +85 °C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Monolithic quad SPST CMOS analog switches designed for high-speed switching of analog and audio signals.
• Low charge injection on the drain terminal, optimized for use in sample-and-hold circuits.
• TTL/CMOS-compatible logic inputs for simple interfacing.
• Epitaxial layer construction prevents latchup.

Analog Switches, Multiplexers, Demultiplexers Applications

• Data Acquisition Systems
• Communication Systems
• Automatic Test Equipment
• Medical Instrumentation
• Sample-and-Hold Circuits

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific ordering suffixes that may affect packaging or material composition. Ensure the supplier provides valid traceability documentation matching the Vishay Siliconix part number.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when low signal distortion and fast switching speeds are required for analog signal routing. Verify that the application voltage does not exceed the absolute maximum ratings of ±22 V or 12 V single supply. Consider the thermal derating requirements if operating near the upper temperature limit.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the DG444B/DG445B series of improved quad SPST CMOS analog switches. It serves as an upgrade to the original DG444/DG445 models, offering enhanced performance characteristics such as lower on-resistance and faster switching times while maintaining pin compatibility.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG445BDJ-E3 (DIP-16 variant)

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the logic input affect the DG445B channel state?

For the DG445B, a Logic '0' (≤ 0.8 V) turns the switch ON, while a Logic '1' (≥ 2.4 V) turns the switch OFF.

What is the typical charge injection value for this device?

The typical charge injection is 1 pC under test conditions where CL = 1 nF, VS = 0 V, Vgen = 0 V, and Rgen = 0 Ω.

Can the DG445BDY-T1 handle bipolar analog signals?

Yes, it supports an analog signal range from -15 V to +15 V when powered by dual supplies of ±15 V.