DG418DK

Analog Switches, Multiplexers, Demultiplexers Overview

The DG418DK is a precision, monolithic CMOS analog switch manufactured by Maxim Integrated (Analog Devices). It features a single-pole/single-throw (SPST) normally-open configuration housed in an 8-pin CERDIP package. The device operates from a single +10V to +30V supply or bipolar ±4.5V to ±20V supplies. Key electrical parameters include a maximum on-resistance of 35Ω, guaranteed on-resistance matching of 3Ω max, and on-resistance flatness of 4Ω max. Switching times are less than 175ns for turn-on and 145ns for turn-off. It offers low charge injection (10pC max), low off-leakage current (<5nA at +85°C), and high ESD tolerance (2000V min per Method 3015.7).

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Guaranteed on-resistance matching between channels and flatness over the signal range.
• Low power consumption with rail-to-rail signal handling capabilities.
• Compatible with TTL and CMOS logic levels for flexible interface integration.
• High electrostatic discharge tolerance ensuring robust operation.

Analog Switches, Multiplexers, Demultiplexers Applications

• Sample-and-Hold Circuits
• Test Equipment
• Audio Signal Routing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix 'DK' corresponds to the 8-pin CERDIP package and -55°C to +125°C temperature range as defined in the official datasheet. Confirm that the component source provides valid traceability documentation. Ensure compatibility with the required operating voltage and logic levels before finalizing procurement decisions.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the DG418DK when a normally-open SPST configuration is required within a wide industrial temperature range. Consider this part for applications demanding guaranteed on-resistance matching and flatness. Verify that the 8-pin CERDIP package meets the mechanical constraints of the target design compared to plastic DIP or SOIC alternatives.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG418DK belongs to the redesigned DG417/DG418/DG419 series of precision CMOS analog switches. This family improves upon previous industry-standard designs by offering guaranteed Ron matching and flatness. The DG418 specifically denotes the single-pole/single-throw normally-open variant within this lineup.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG418DJ: Same function but in Plastic DIP package with -40°C to +85°C range. DG418AK: Same function and package but with extended -55°C to +125°C range.