DG441DK

Analog Switches, Multiplexers, Demultiplexers Overview

The DG441DK is a quad, single-pole/single-throw (SPST) analog switch manufactured by Analog Devices Inc./Maxim Integrated. It features four normally closed switches with an on-resistance of 85 ohms maximum and an on-resistance match between channels of 4 ohms maximum. The device operates from a single +10V to +30V supply or bipolar ±4.5V to ±20V supplies. It guarantees low charge injection of 10pC maximum and low power consumption of 1.65mW maximum. The component withstands electrostatic discharge of 2000V minimum per Method 3015.7 and has an operating temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Quad SPST configuration with four normally closed switches
• Low on-resistance with guaranteed matching and flatness over the signal range
• TTL/CMOS logic compatible for direct interface with digital control systems
• Rail-to-rail signal handling capability across specified supply voltages

Analog Switches, Multiplexers, Demultiplexers Applications

• Sample-and-hold circuits
• Communication systems
• Test equipment
• Battery-operated systems
• Audio-signal routing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix DK corresponds to the 16-pin CERDIP package and the -40°C to +85°C industrial temperature range as documented in the official Maxim Integrated datasheet. Confirm lead-free status requirements if applicable, noting that lead-free variants typically require a plus symbol suffix. Ensure compatibility with existing board layouts designed for ceramic dual in-line packages before procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the DG441DK when a normally closed analog switch configuration is required for signal routing applications. This part is suitable for designs needing rail-to-rail signal handling and low charge injection. Consider the 16-pin CERDIP package constraints and verify that the bipolar or single-supply voltage ranges align with the system power architecture. Evaluate thermal dissipation requirements against the specified derating curves for the selected package type.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG441DK belongs to the DG441/DG442 family of improved quad SPST analog switches. It shares functional similarities with other members like the DG441DJ and DG441DY but differs in packaging and temperature rating. The 'DK' suffix specifically denotes the ceramic dual in-line package variant designed for industrial temperature operation, distinguishing it from plastic DIP or narrow SOIC options within the same product line.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct pin-compatible replacements include the DG441DJ and DG441DY, though these utilize different packaging technologies. Verify that alternative components maintain the required normally closed configuration and meet the electrical specifications for on-resistance and leakage current.