DG442DY

Analog Switches, Multiplexers, Demultiplexers Overview

The DG442DY is a quad, single-pole/single-throw (SPST) analog switch featuring four normally open channels. It operates from a single +10V to +30V supply or bipolar ±4.5V to ±20V supplies. Key electrical parameters include an on-resistance of 85Ω maximum, on-resistance matching of 4Ω maximum, and on-resistance flatness of 9Ω maximum over the signal range. The device guarantees charge injection of 10pC maximum and off-leakage current below 5nA at +85°C. Switching times are less than 250ns for turn-on and 170ns for turn-off. It utilizes a 44V silicon-gate process and offers rail-to-rail signal handling with TTL/CMOS logic compatibility.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Four independent SPST switches configured as normally open contacts
• Guaranteed low on-resistance flatness across the full analog signal range
• Enhanced electrostatic discharge tolerance exceeding 2000V per Method 3015.7
• Low power consumption with minimal leakage current at elevated temperatures

Analog Switches, Multiplexers, Demultiplexers Applications

• Sample-and-hold circuits
• Audio-signal routing systems
• Communication equipment multiplexing
• Test and measurement instrumentation

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix 'DY' corresponds to the narrow SOIC package and -40°C to +85°C temperature range. Confirm lead-free status by checking for the '+' designation in the final part number. Ensure the supplier provides valid RoHS compliance documentation consistent with the manufacturer's specifications.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when normally open switching logic is required compared to the DG441's normally closed configuration. Verify that the 85Ω on-resistance meets the application's signal integrity requirements. Ensure the narrow SOIC package dimensions fit the PCB layout constraints. Check if the bipolar supply voltage range aligns with the system power architecture.

Analog Switches, Multiplexers, Demultiplexers Part Context

This device belongs to the redesigned DG441/DG442 family of improved quad SPST analog switches. It shares the same pinout and core functionality as the DG441 but differs in the default state of the internal switches. The DG442 variant specifically provides four normally open channels, whereas the DG441 provides four normally closed channels within the same package options.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG441DY serves as a functional substitute if normally closed switching behavior is acceptable instead of normally open.