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DG441DY Equivalent & Substitute Parts
Part Overview
The DG441DY is a 4-circuit SPST-NC (Single Pole Single Throw - Normally Closed) analog switch IC manufactured by Renesas Electronics Corporation in a 16-SOIC surface mount package. This component functions as a precision analog multiplexer/demultiplexer with 1:1 circuit configuration and 85Ohm on-state resistance, designed for signal routing and switching applications across industrial and consumer electronics.
The DG441DY is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and meet current RoHS compliance requirements for new production runs.
Substiute Parts
Key Parameters
| Parameter | DG441DY Value |
|---|---|
| Switch Circuit Configuration | SPST - NC |
| Number of Circuits | 4 |
| Multiplexer/Demultiplexer Ratio | 1:1 |
| On-State Resistance (Max) | 85Ohm |
| Voltage Supply - Single (V+) | 5V ~ 34V |
| Voltage Supply - Dual (V±) | ±5V ~ 22V |
| Switch Time Ton (Max) | 250ns |
| Switch Time Toff (Max) | 120ns |
| Charge Injection | -1pC |
| Channel Capacitance CS(off) / CD(off) | 4pF / 4pF |
| Leakage Current IS(off) (Max) | 500pA |
| Crosstalk | -100dB @ 1MHz |
| Operating Temperature Range | -40°C ~ 85°C |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the DG441DY is determined by the following critical parameters:
Primary Substitution Criteria:
- Switch circuit configuration: SPST - NC
- Number of circuits: 4
- Multiplexer/demultiplexer ratio: 1:1
- Package type: 16-SOIC surface mount
- Operating temperature range: minimum -40°C ~ 85°C
Secondary Compatibility Parameters:
- On-state resistance tolerance: 50Ohm to 85Ohm maximum
- Supply voltage ranges: must support either single supply (5V minimum) or dual supply (±5V minimum)
- Switch timing: Ton and Toff within application requirements
- Leakage current: 500pA to 1nA maximum
- Crosstalk performance: -95dB or better
Substitute parts are grouped into two categories:
Direct Equivalents (Identical Base Product): Parts sharing the DG441 base product number with identical electrical specifications and packaging. These include DG441DYZ, DG441CY+, DG441CY+T, and DG441DY+.
Functional Equivalents (Alternative Manufacturers): Parts from Analog Devices Inc. and Vishay Siliconix with matching circuit topology, package, and operating temperature range but with variations in on-state resistance (70Ohm to 80Ohm) or supply voltage specifications. These include ADG441BRZ, ADG441BRZ-REEL, DG271BDY-E3, DG271BDY-T1-E3, DG441BDY-E3, and DG441BDY-T1-E3.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Ron (Max) | V+ Supply | V± Supply | Ton/Toff (Max) | Charge Injection | IS(off) (Max) | Operating Temp | RoHS Status | Packaging |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DG441DY | Renesas | Obsolete | 85Ohm | 5V ~ 34V | ±5V ~ 22V | 250ns / 120ns | -1pC | 500pA | -40°C ~ 85°C | Non-compliant | Tube |
| DG441DYZ | Renesas | Active | 85Ohm | 5V ~ 34V | ±5V ~ 22V | 250ns / 120ns | -1pC | 500pA | -40°C ~ 85°C | ROHS3 Compliant | Tube |
| DG441DY+ | Analog Devices / Maxim | Active | 85Ohm | 10V ~ 30V | ±4.5V ~ 20V | 250ns / 120ns | 5pC | 500pA | -40°C ~ 85°C | ROHS3 Compliant | Tube |
| DG441CY+ | Analog Devices / Maxim | Active | 85Ohm | 10V ~ 30V | ±4.5V ~ 20V | 250ns / 120ns | 5pC | 500pA | 0°C ~ 70°C | ROHS3 Compliant | Tube |
| DG441CY+T | Analog Devices / Maxim | Active | 85Ohm | 10V ~ 30V | ±4.5V ~ 20V | 250ns / 120ns | 5pC | 500pA | 0°C ~ 70°C | ROHS3 Compliant | Tape & Reel |
| ADG441BRZ | Analog Devices | Active | 70Ohm | 12V | ±15V | 110ns / 60ns | 1pC | 500pA | -40°C ~ 85°C | ROHS3 Compliant | Tube |
| ADG441BRZ-REEL | Analog Devices | Active | 70Ohm | 12V | ±15V | 110ns / 60ns | 1pC | 500pA | -40°C ~ 85°C | ROHS3 Compliant | Cut Tape & Digi-Reel |
| DG441BDY-E3 | Vishay Siliconix | Active | 80Ohm | 13V ~ 36V | ±7V ~ 22V | 220ns / 120ns | -1pC | 500pA | -40°C ~ 85°C | ROHS3 Compliant | Tube |
| DG441BDY-T1-E3 | Vishay Siliconix | Active | 80Ohm | 13V ~ 36V | ±7V ~ 22V | 220ns / 120ns | -1pC | 500pA | -40°C ~ 85°C | ROHS3 Compliant | Tape & Reel |
| DG271BDY-E3 | Vishay Siliconix | Active | 50Ohm | — | ±15V | 65ns / 65ns | -5pC | 1nA | -40°C ~ 85°C | ROHS3 Compliant | Tube |
| DG271BDY-T1-E3 | Vishay Siliconix | Active | 50Ohm | — | ±15V | 65ns / 65ns | -5pC | 1nA | -40°C ~ 85°C | ROHS3 Compliant | Tape & Reel |
Engineering Selection Recommendations
For Direct Replacement (Identical Electrical Performance):
DG441DYZ is the primary direct equivalent. It maintains identical electrical specifications to the DG441DY while achieving ROHS3 compliance and active product status. This part is recommended for new designs and production transitions from the obsolete DG441DY.
DG441DY+ and DG441CY+/DG441CY+T are functionally equivalent alternatives from Analog Devices Inc./Maxim Integrated. These parts maintain 85Ohm on-state resistance and identical switch timing but operate within narrower supply voltage ranges (10V ~ 30V single supply, ±4.5V ~ 20V dual supply). DG441CY+ and DG441CY+T are restricted to 0°C ~ 70°C operating temperature and are suitable only for commercial-grade applications.
For Performance-Optimized Substitution:
ADG441BRZ and ADG441BRZ-REEL offer improved switching performance with 70Ohm on-state resistance and faster switching times (110ns/60ns). These parts are suitable for applications requiring lower on-resistance and faster response. Supply voltage is fixed at 12V single supply or ±15V dual supply. Packaging options include standard tube (ADG441BRZ) and cut tape with Digi-Reel (ADG441BRZ-REEL).
DG441BDY-E3 and DG441BDY-T1-E3 provide 80Ohm on-state resistance with extended supply voltage range (13V ~ 36V single supply, ±7V ~ 22V dual supply). These parts are suitable for applications requiring higher supply voltage tolerance. Packaging options include tube (DG441BDY-E3) and tape & reel (DG441BDY-T1-E3).
For Low-Resistance Applications:
DG271BDY-E3 and DG271BDY-T1-E3 offer the lowest on-state resistance at 50Ohm with fastest switching times (65ns/65ns). These parts operate only on dual supply (±15V) and are suitable for applications requiring minimal signal attenuation and maximum switching speed. Packaging options include tube (DG271BDY-E3) and tape & reel (DG271BDY-T1-E3).
All recommended substitutes are ROHS3 compliant and carry active product status, ensuring long-term supply availability and regulatory compliance.
Frequently Asked Questions (FAQ)
Q: Can DG441DY be directly replaced with DG441DYZ?
A: Yes. DG441DYZ is the direct equivalent with identical electrical specifications, package, and circuit configuration. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). DG441DYZ is the recommended replacement for new production.
Q: What is the difference between DG441DY+ and DG441CY+?
A: Both parts maintain 85Ohm on-state resistance and identical switch timing. The primary difference is operating temperature range: DG441DY+ operates -40°C ~ 85°C (industrial grade), while DG441CY+ operates 0°C ~ 70°C (commercial grade). DG441DY+ is suitable for extended temperature applications. Both parts have narrower supply voltage ranges than the original DG441DY.
Q: Can ADG441BRZ replace DG441DY in all applications?
A: ADG441BRZ is functionally compatible but with performance differences. It offers lower on-state resistance (70Ohm vs. 85Ohm) and faster switching times (110ns/60ns vs. 250ns/120ns). However, supply voltage is fixed at 12V single or ±15V dual, which may not match all original applications. Verify supply voltage compatibility before substitution.
Q: What is the advantage of DG271BDY-E3 over DG441DY?
A: DG271BDY-E3 provides significantly lower on-state resistance (50Ohm vs. 85Ohm) and faster switching times (65ns/65ns vs. 250ns/120ns). This is beneficial for applications requiring minimal signal loss and maximum switching speed. However, it operates only on dual supply (±15V), which may not be compatible with single-supply designs.
Q: Are all substitute parts available in both tube and tape & reel packaging?
A: Not all substitutes are available in both formats. DG441DYZ, ADG441BRZ, DG441BDY-E3, and DG271BDY-E3 are available in tube packaging. ADG441BRZ-REEL, DG441BDY-T1-E3, DG271BDY-T1-E3, DG441CY+T, and DG441DY+ are available in tape & reel or alternative packaging. Verify packaging availability with your supplier before design finalization.
Q: What is the impact of on-state resistance variation on circuit performance?
A: On-state resistance directly affects signal attenuation and power dissipation. Lower resistance (50Ohm to 70Ohm) reduces signal loss and heat generation, beneficial for precision analog applications. Higher resistance (80Ohm to 85Ohm) increases signal attenuation and power dissipation. Select on-state resistance based on signal integrity and thermal requirements of your application.
Q: Are all substitute parts RoHS compliant?
A: All recommended substitute parts carry ROHS3 compliance status. The original DG441DY is RoHS non-compliant. Compliance is mandatory for new designs and production transitions in regulated markets.
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