DG442BDJ

Overview

The DG442BDJ is a monolithic quad SPST CMOS analog switch manufactured by Vishay Siliconix in a 16-pin Plastic DIP package. It provides high-speed switching with a typical turn-on time of 120 ns and low on-resistance of 45 Ω at ±15 V supplies. The device supports dual supply voltages up to ±22 V or single supply up to 36 V, with an operating temperature range of -40 °C to +85 °C. Power dissipation is rated at 470 mW for the DIP package.

Feature Summary

• High-speed switching action suitable for data acquisition systems
• Low charge injection optimized for sample-and-hold circuits
• TTL/CMOS-compatible logic control levels
• Epitaxial layer construction prevents latchup

Applications

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

Procurement Notes

Verify the specific ordering suffix against current Vishay documentation to confirm package type and compliance status. Confirm that the 16-pin Plastic DIP form factor matches the target PCB footprint requirements. Ensure the component meets the required thermal derating specifications for the intended operating environment.

Selection Notes

Select this part when low on-resistance and fast switching are prioritized over ultra-low leakage. The DG442B variant offers inverted logic control compared to the DG441B. Verify that the 470 mW power dissipation limit accommodates the expected thermal load within the specified temperature range.

Part Context

This component belongs to the DG441B/DG442B series, which are improved versions of the original DG441/DG442 switches. The series utilizes a high-voltage silicon-gate process to achieve robust performance in analog signal routing applications requiring precise switching characteristics.

Replacement Considerations

DG441BDJ serves as the logical counterpart with non-inverted logic control. Other variants in the series include SOIC packages (DG442BDY) and QFN packages (DG442BDN), though pinouts and thermal characteristics differ.