DG442DK

Analog Switches, Multiplexers, Demultiplexers Overview

The DG442DK is a quad, single-pole/single-throw (SPST) analog switch featuring four normally open switches. It operates from a single +10V to +30V supply or bipolar ±4.5V to ±20V supplies. Key electrical characteristics include a maximum on-resistance of 85Ω, an on-resistance match between channels of 4Ω max, and guaranteed on-resistance flatness over the signal range of 9Ω max. The device exhibits low charge injection of 10pC max and off-leakage current less than 5nA at +85°C. Switching times are less than 250ns for turn-on and less than 170ns for turn-off. It is housed in a 16-pin CERDIP package with an operating temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Quad SPST configuration with four normally open switches
• Improved on-resistance matching and guaranteed flatness over the signal range
• Low power consumption and rail-to-rail signal handling capability
• High electrostatic discharge tolerance per Method 3015.7

Analog Switches, Multiplexers, Demultiplexers Applications

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

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix DK corresponds to the 16-pin Ceramic Dual In-Line Package (CERDIP). Confirm the temperature grade matches the required operational environment of -40°C to +85°C. Ensure lead-free status is noted if applicable to the specific batch requirements. Cross-reference the manufacturer's latest documentation for any pinout or functional updates.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a normally open analog switch configuration is required. The DG442DK offers improved channel-to-channel matching compared to previous generations. Consider the bipolar supply operation range of ±4.5V to ±20V for signal integrity. Evaluate the 85Ω maximum on-resistance against the application's voltage drop constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG442DK belongs to the redesigned DG441/DG442 family of improved quad SPST analog switches. While the DG441 features normally closed switches, the DG442 variant provides normally open switching logic. Both share identical electrical performance metrics, including low charge injection and high ESD tolerance, fabricated using a 44V silicon-gate process.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG441DK serves as a logical alternative if normally closed switching functionality is acceptable for the circuit design. Other package variants such as DG442DJ (Plastic DIP) or DG442DY (Narrow SO) offer pin-compatible replacements with different thermal or mechanical properties.