DG445BDY

Overview

The DG445BDY is a monolithic quad single-pole single-throw (SPST) CMOS analog switch manufactured by Vishay Siliconix. It provides high-speed, low-error switching for analog and audio signals. The device features a typical on-resistance of 45 ohms and a turn-on time of 120 nanoseconds. It operates with dual supplies ranging from ±5 V to ±20 V or a single supply up to 12 V. The package is a 16-pin narrow SOIC with an operating temperature range of -40 °C to +85 °C.

Feature Summary

• Low charge injection suitable for sample-and-hold circuits
• TTL and CMOS-compatible logic interface
• High-voltage silicon-gate process prevents latchup

Applications

• Data acquisition systems
• Communication systems
• Automatic test equipment
• Medical instrumentation
• Audio switching

Procurement Notes

Verify the specific suffix 'BDY' corresponds to the 16-pin Narrow SOIC package variant. Confirm RoHS compliance status if required for the project. Check current availability as this component may be subject to lifecycle changes. Ensure the ordering information matches the exact voltage and temperature requirements.

Selection Notes

Select the DG445BDY when inverted control logic is required compared to the DG444B. Verify that the 45 ohm typical on-resistance meets signal integrity needs. Ensure the 30 mA continuous current rating supports the load. Consider the 120 ns switching speed for system throughput requirements.

Part Context

The DG445BDY belongs to the DG444B/DG445B series, which are improved upgrades to the original DG444 and DG445 models. These devices utilize Vishay's high-voltage silicon-gate technology. The DG445B specifically offers inverted logic control relative to the DG444B within the same functional family.

Replacement Considerations

DG444BDY serves as the logical counterpart with non-inverted control logic. DG445BDJ is available in a 16-pin Plastic DIP package for through-hole applications.