DG445CY+

Analog Switches, Multiplexers, Demultiplexers Overview

The DG445CY+ is a quad single-pole/single-throw (SPST) analog switch manufactured by Analog Devices Inc./Maxim Integrated. It features an on-resistance of 85 ohms maximum, with improved matching of 4 ohms maximum and flatness of 9 ohms maximum over the signal range. The device operates from a single +10V to +30V supply or bipolar ±4.5V to ±20V supplies. Key electrical parameters include a turn-on time of 250ns maximum, turn-off time of 70ns maximum, charge injection of 10pC maximum, and off-leakage current less than 5nA at +85°C. It is housed in a 16-pin Narrow SO package and supports an operating temperature range of 0°C to +70°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Improved on-resistance matching between channels for enhanced signal integrity
• Guaranteed low charge injection for precision switching applications
• Low power consumption suitable for battery-operated systems
• TTL/CMOS logic compatible control inputs

Analog Switches, Multiplexers, Demultiplexers Applications

• Sample-and-hold circuits
• Test equipment
• Heads-up displays
• Guidance and control systems
• Audio signal routing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix 'CY' corresponds to the 16-pin Narrow SOIC package and the commercial temperature range (0°C to +70°C). Confirm that the component meets RoHS compliance standards as indicated by the '+' suffix. Ensure the source document explicitly lists this part number to avoid confusion with other package variants like DIP or QFN.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the DG445CY+ when four independent normally open SPST switches are required in a surface-mount narrow SOIC package. This variant is appropriate for designs needing TTL/CMOS compatibility and operation within the 0°C to +70°C temperature range. Consider alternative packages if higher thermal performance or different pin configurations are necessary.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG445CY+ belongs to the DG444/DG445 family of improved quad SPST analog switches. It shares the same internal architecture as the DG444 but provides normally open switches instead of normally closed ones. The 'CY' suffix specifically denotes the 16-pin Narrow SOIC package format, distinguishing it from plastic DIP or Thin QFN options available within the same product line.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct replacements include DG445CJ (Plastic DIP) and DG445DY (Narrow SOIC, -40°C to +85°C). Verify pinout compatibility and temperature range requirements before substituting. Other families may require schematic adjustments due to differences in on-resistance or logic levels.