DG445CJ

Analog Switches, Multiplexers, Demultiplexers Overview

The DG445CJ 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 parameters include an on-resistance of 85Ω max, on-resistance matching of 4Ω max, and on-resistance flatness of 9Ω max. Turn-on time is 250ns max and turn-off time is 70ns max. The device offers low charge injection of 10pC max, off-leakage current under 5nA at +85°C, and ESD tolerance of 2000V min per Method 3015.7. It is housed in a 16-pin Plastic DIP package with an operating temperature range of 0°C to +70°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Quad SPST configuration with four independent normally open channels
• TTL/CMOS logic compatible for direct interface with digital control systems
• Rail-to-rail signal handling capability across the full supply voltage range
• Low power consumption design suitable for battery-operated applications

Analog Switches, Multiplexers, Demultiplexers Applications

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

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for the 16-pin Plastic DIP format. Confirm that the component meets all necessary environmental and safety standards required for the intended deployment environment before finalizing procurement decisions.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a quad SPST normally open switch configuration is required. Verify that the supply voltage requirements align with the specified single or bipolar ranges. Consider the on-resistance and switching speed specifications relative to the signal frequency and amplitude constraints of the application circuit to ensure optimal performance.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG445CJ belongs to the DG444/DG445 family of improved analog switches manufactured by Analog Devices Inc./Maxim Integrated. This series represents a redesign offering enhanced performance characteristics compared to previous industry-standard versions. The DG445 variant specifically provides normally open switches, distinguishing it from the DG444 which features normally closed switches within the same functional architecture.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct pin-compatible replacements within the same family include the DG445DJ for extended temperature range operation. Other variants such as the DG445CY offer surface mount packaging options. Verify functional equivalence regarding switch state and electrical parameters when substituting.