DG411LDY Equivalent & Substitute Parts

Part Overview

The DG411LDY is a 4-circuit IC switch with SPST-NC (Single Pole Single Throw - Normally Closed) configuration, manufactured by Vishay Siliconix. This interface component features 17Ohm on-state resistance, operates across 2.7V to 12V single supply or ±3V to ±6V dual supply, and is packaged in 16-SOIC surface mount format. The DG411LDY is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts maintain the same functional circuit topology and package while offering improved specifications, active product status, and enhanced compliance certifications.

Substiute Parts

DG411LDY

Vishay SiliconixIn Stock: 1895DG411LDY Datasheet

Current PartRFQ

DG411CY+

Analog Devices Inc./Maxim IntegratedIn Stock: 2499DG411CY+ Datasheet

MFR RecommendedRFQ

DG411CY+T

Analog Devices Inc./Maxim IntegratedIn Stock: 857DG411CY+T Datasheet

MFR RecommendedRFQ

DG411DY+

Analog Devices Inc./Maxim IntegratedIn Stock: 1569DG411DY+ Datasheet

MFR RecommendedRFQ

DG411DY+T

Analog Devices Inc./Maxim IntegratedIn Stock: 1211DG411DY+T Datasheet

MFR RecommendedRFQ

DG411DYZ

Renesas Electronics CorporationIn Stock: 2406DG411DYZ Datasheet

MFR RecommendedRFQ

DG411DYZ-T

Renesas Electronics CorporationIn Stock: 5227DG411DYZ-T Datasheet

MFR RecommendedRFQ

MAX4604CSE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1512MAX4604CSE+ Datasheet

MFR RecommendedRFQ

MAX4604ESE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2310MAX4604ESE+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DG411LDY is determined by strict adherence to the following electrical and mechanical parameters:

Primary Compatibility Criteria:

• Switch circuit topology: SPST - NC (4 circuits, 1:1 multiplexer configuration)
• Package type: 16-SOIC surface mount with 0.154" (3.90mm) width
• Mounting type: Surface mount
• Charge injection: 5pC (fixed across all substitutes)
• Channel capacitance: 9pF (CS(off), CD(off)) for active substitutes

Electrical Operating Range: Substitute parts must support the application's supply voltage requirements. The DG411LDY operates at 2.7V ~ 12V (single supply) or ±3V ~ ±6V (dual supply). Substitute parts with extended voltage ranges (10V ~ 30V single supply or ±4.5V ~ 20V dual supply) remain compatible for applications within the original operating window.

Performance Parameters: On-state resistance varies across substitutes (4Ohm to 45Ohm), affecting signal integrity and power dissipation. Switch timing (Ton, Toff) ranges from 120ns to 175ns across substitutes, with the original part offering 19ns/12ns. Crosstalk performance ranges from -60dB to -95dB @ 1MHz.

Compliance and Availability: The DG411LDY is obsolete and RoHS non-compliant. All active substitutes are RoHS3 compliant and available in production quantities, supporting modern design requirements and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Obsolete Part Mitigation): DG411DY+ and DG411DY+T are the primary substitutes for the DG411LDY. Both maintain the extended operating temperature range (-40°C ~ 85°C) matching the original part, are manufactured by Analog Devices Inc./Maxim Integrated, and carry ROHS3 compliance. The DG411DY+ is supplied in tube packaging, while DG411DY+T is supplied in tape & reel format for automated assembly. On-state resistance increases from 17Ohm to 45Ohm, requiring circuit-level evaluation for applications sensitive to switch resistance.

For Extended Voltage Range Applications: DG411DYZ and DG411DYZ-T, manufactured by Renesas Electronics Corporation, support wider supply voltage ranges (5V ~ 44V single supply, ±5V ~ 20V dual supply) while maintaining the -40°C ~ 85°C operating temperature. On-state resistance of 35Ohm provides a middle ground between the original 17Ohm and the 45Ohm DG411 variants. DG411DYZ is supplied in tube packaging; DG411DYZ-T is supplied in cut tape & Digi-Reel format.

For Low-Resistance Applications: MAX4604CSE+ and MAX4604ESE+ offer the lowest on-state resistance at 4Ohm, suitable for applications requiring minimal signal attenuation and reduced power dissipation. MAX4604CSE+ operates 0°C ~ 70°C; MAX4604ESE+ extends to -40°C ~ 85°C. Both support 4.5V ~ 36V single supply and ±4.5V ~ 20V dual supply. Switch timing is faster (120ns/130ns) compared to the original part.

Packaging Considerations: Tube packaging (DG411CY+, DG411DY+, DG411DYZ, MAX4604CSE+, MAX4604ESE+) is suitable for manual assembly and lower-volume production. Tape & reel and cut tape formats (DG411CY+T, DG411DY+T, DG411DYZ-T) are optimized for automated pick-and-place assembly and high-volume manufacturing.

Frequently Asked Questions (FAQ)

Q: Can DG411LDY be directly replaced with DG411CY+ or DG411CY+T? A: DG411CY+ and DG411CY+T are functionally equivalent in circuit topology and package, but operate at a narrower temperature range (0°C ~ 70°C) compared to the original DG411LDY (-40°C ~ 85°C). Selection depends on the application's temperature requirements. Both are ROHS3 compliant and active products.

Q: What is the impact of increased on-state resistance in substitute parts? A: The DG411LDY features 17Ohm on-state resistance. Substitutes range from 4Ohm (MAX4604 series) to 45Ohm (DG411CY+, DG411DY+ variants). Higher resistance increases voltage drop across the switch and power dissipation. Applications with strict signal integrity or power budget constraints should select lower-resistance alternatives such as MAX4604ESE+ (4Ohm) or DG411DYZ (35Ohm).

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts listed are ROHS3 compliant. The original DG411LDY is RoHS non-compliant, making substitution necessary for designs requiring regulatory compliance with modern environmental standards.

Q: What packaging formats are available for automated assembly? A: Tape & reel and cut tape formats are available: DG411CY+T, DG411DY+T, and DG411DYZ-T. These formats are optimized for automated pick-and-place assembly in high-volume production environments.

Q: Which substitute part best matches the original DG411LDY specifications? A: DG411DY+ and DG411DY+T provide the closest match, maintaining the -40°C ~ 85°C operating temperature range and SPST-NC 4-circuit topology. On-state resistance increases to 45Ohm, which is the primary specification change requiring circuit evaluation.

Q: Can MAX4604 series parts be used as direct substitutes? A: MAX4604CSE+ and MAX4604ESE+ maintain the same circuit topology and 16-SOIC package but feature significantly lower on-state resistance (4Ohm) and faster switching times (120ns/130ns). These are suitable for applications prioritizing low resistance and high-speed switching. Temperature range varies: MAX4604CSE+ operates 0°C ~ 70°C; MAX4604ESE+ operates -40°C ~ 85°C.

Q: What is the difference between DG411DYZ and DG411DYZ-T? A: Both parts are identical in electrical specifications and manufactured by Renesas Electronics Corporation. DG411DYZ is supplied in tube packaging for manual assembly; DG411DYZ-T is supplied in cut tape & Digi-Reel format for automated assembly. Selection depends on production assembly method and volume requirements.