DG405DY Equivalent & Substitute Parts

Part Overview

The DG405DY is a 2-circuit IC switch with DPST-NO configuration and 45Ohm on-state resistance, manufactured by Analog Devices Inc./Maxim Integrated in 16-SOIC surface mount packaging. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The DG405DY operates across single supply (10V–30V) or dual supply (±4.5V–20V) configurations with 150ns/100ns switching times and low crosstalk performance (-90dB @ 1MHz).

Substiute Parts

DG405DY

Analog Devices Inc./Maxim IntegratedIn Stock: 4906DG405DY Datasheet

Current PartRFQ

DG405DY+

Analog Devices Inc./Maxim IntegratedIn Stock: 1450DG405DY+ Datasheet

DirectRFQ

DG405CY+

Analog Devices Inc./Maxim IntegratedIn Stock: 1076DG405CY+ Datasheet

Parametric EquivalentRFQ

DG405DY-E3

Vishay SiliconixIn Stock: 913DG405DY-E3 Datasheet

MFR RecommendedRFQ

DG405DY-T1-E3

Vishay SiliconixIn Stock: 3292DG405DY-T1-E3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DG405DY is determined by strict parameter matching across electrical and mechanical specifications. All substitute parts must maintain identical switch circuit topology (DPST-NO), multiplexer configuration (2:1), circuit count (2), on-state resistance (45Ohm maximum), package type (16-SOIC), and mounting method (surface mount).

The substitute parts are grouped into three categories:

Direct Manufacturer Equivalent (DG405DY+): Identical electrical specifications and base product number with active product status and improved RoHS3 compliance. Packaging differs only in format (Tube vs. unspecified original).

Parametric Equivalent (DG405CY+): Maintains all critical electrical parameters including on-state resistance, switching times, capacitance, leakage current, and crosstalk performance. Active product status with RoHS3 compliance. Identical package and mounting specifications.

Manufacturer Recommended Alternatives (DG405DY-E3, DG405DY-T1-E3): Sourced from Vishay Siliconix with identical core switching parameters (45Ohm resistance, 150ns/100ns switching times, -90dB crosstalk). These parts feature extended operating temperature range (-40°C to 85°C) and higher supply voltage tolerance (13V–36V single, ±7V–22V dual), with trade-offs in charge injection (60pC vs. 10pC) and channel-to-channel matching specification availability. Packaging differs in format (Tube or Tape & Reel).

Parameter Comparison

Engineering Selection Recommendations

For RoHS3 Compliance Requirements: DG405DY+, DG405CY+, DG405DY-E3, and DG405DY-T1-E3 all meet ROHS3 compliance standards, whereas the original DG405DY is RoHS non-compliant. Selection among these four depends on supply voltage and temperature operating range requirements.

For Standard Operating Conditions (0°C–70°C, 10V–30V single supply): DG405DY+ and DG405CY+ are direct functional replacements with identical electrical specifications and active product status. Both maintain the original 10pC charge injection specification and 500mOhm channel-to-channel matching.

For Extended Temperature Range (-40°C–85°C) or Higher Supply Voltage (13V–36V): DG405DY-E3 and DG405DY-T1-E3 provide broader operating conditions. These parts accept higher supply voltages and operate across military/industrial temperature ranges. Trade-offs include 60pC charge injection (versus 10pC in the original) and unspecified channel-to-channel matching.

For High-Volume Production: DG405DY-T1-E3 in Tape & Reel format supports automated assembly with 3,225 units in stock. DG405DY+ and DG405CY+ are available in Tube packaging with 1,427 and 1,021 units respectively.

Frequently Asked Questions (FAQ)

Q: Can DG405DY-E3 or DG405DY-T1-E3 be used as direct drop-in replacements for DG405DY?

A: Yes, from a functional and mechanical standpoint. All five parts share identical 16-SOIC packaging, surface mount configuration, and core switching parameters (45Ohm resistance, 2:1 multiplexer, DPST-NO topology, 150ns/100ns switching times, -90dB crosstalk). However, DG405DY-E3 and DG405DY-T1-E3 have higher charge injection (60pC vs. 10pC) and different supply voltage ranges (13V–36V vs. 10V–30V). Verify your circuit's supply voltage and charge injection sensitivity before selection.

Q: What is the difference between DG405DY+ and DG405CY+?

A: Both parts are parametric equivalents with identical electrical specifications and active product status. The primary difference is the base product number designation (DG405 vs. DG405C). Both maintain 45Ohm on-state resistance, 500mOhm channel-to-channel matching, 10pC charge injection, and 0°C–70°C operating temperature. Selection can be based on availability and packaging preference (both supplied in Tube format).

Q: Why do DG405DY-E3 and DG405DY-T1-E3 have different charge injection specifications?

A: Charge injection is a manufacturing characteristic that varies between semiconductor vendors. Vishay Siliconix's DG405DY-E3 and DG405DY-T1-E3 specify 60pC charge injection compared to Analog Devices' 10pC. This difference reflects different process technology or design implementation. Applications sensitive to charge injection (precision analog switching, low-level signal routing) should account for this 6x increase when evaluating these alternatives.

Q: Are all substitute parts RoHS compliant?

A: DG405DY+ (Active, ROHS3 Compliant), DG405CY+ (Active, ROHS3 Compliant), DG405DY-E3 (Active, ROHS3 Compliant), and DG405DY-T1-E3 (Active, ROHS3 Compliant) all meet ROHS3 standards. The original DG405DY is RoHS non-compliant. For new designs or regulated applications requiring RoHS compliance, select from the four active alternatives.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging (DG405DY+, DG405CY+, DG405DY-E3) is suitable for manual handling and lower-volume assembly. Tape & Reel packaging (DG405DY-T1-E3) is designed for automated pick-and-place equipment and high-volume production. Both formats contain the same component; packaging choice depends on assembly process requirements and production volume.

Q: Can I use DG405DY-E3 in a circuit designed for 10V supply?

A: No. DG405DY-E3 specifies a minimum single supply voltage of 13V (versus 10V for DG405DY). Operating below the specified minimum voltage may result in out-of-specification performance or component failure. For 10V supply applications, use DG405DY+, DG405CY+, or the original DG405DY.