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DG401DJ+ Equivalent & Substitute Parts
Part Overview
The DG401DJ+ is a 2-circuit SPST-NO (Single Pole Single Throw - Normally Open) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This component features a 1:1 multiplexer/demultiplexer configuration with 45Ohm on-state resistance and is housed in a 16-pin DIP package. The DG401DJ+ is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPST - NO |
| Number of Circuits | 2 |
| Multiplexer/Demultiplexer Configuration | 1:1 |
| On-State Resistance (Max) | 45Ohm |
| Channel-to-Channel Matching (ΔRon) | 500mOhm |
| Voltage - Supply, Single (V+) | 10V ~ 30V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V |
| Switch Time (Ton, Toff) (Max) | 150ns, 100ns |
| Charge Injection | 10pC |
| Channel Capacitance (CS(off), CD(off)) | 12pF, 12pF |
| Current - Leakage (IS(off)) (Max) | 500pA |
| Crosstalk | -90dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 16-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the DG401DJ+ is determined by strict adherence to the following critical parameters:
Mandatory Matching Parameters:
- Switch Circuit Type: SPST - NO
- Number of Circuits: 2
- Multiplexer/Demultiplexer Configuration: 1:1
- On-State Resistance (Max): 45Ohm
- Package / Case: 16-DIP (0.300", 7.62mm)
- Mounting Type: Through Hole
- Operating Temperature Range: -40°C ~ 85°C (TA)
Allowable Parameter Variations: Substitute parts may exhibit differences in the following parameters provided they remain within acceptable operational bounds:
- Channel-to-Channel Matching (ΔRon): Specification may be unspecified in alternatives
- Voltage Supply Ranges: May differ if minimum and maximum operating points remain compatible with system requirements
- Charge Injection: May vary within acceptable signal integrity limits
- Crosstalk Performance: May differ if specification is improved or equivalent
- Compliance Certifications: Must maintain ROHS3 compliance and MSL 1 rating
The DG401DJ-E3 qualifies as a direct substitute based on identical switch topology, circuit count, on-state resistance, package configuration, and mounting type.
Parameter Comparison
| Parameter | DG401DJ+ (Main Part) | DG401DJ-E3 (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Vishay Siliconix |
| Product Status | Obsolete | Active |
| Switch Circuit Type | SPST - NO | SPST - NO |
| Number of Circuits | 2 | 2 |
| Multiplexer/Demultiplexer Configuration | 1:1 | 1:1 |
| On-State Resistance (Max) | 45Ohm | 45Ohm |
| Channel-to-Channel Matching (ΔRon) | 500mOhm | Not Specified |
| Voltage - Supply, Single (V+) | 10V ~ 30V | 13V ~ 36V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V | ±7V ~ 22V |
| Switch Time (Ton, Toff) (Max) | 150ns, 100ns | 150ns, 100ns |
| Charge Injection | 10pC | 60pC |
| Channel Capacitance (CS(off), CD(off)) | 12pF, 12pF | 12pF, 12pF |
| Current - Leakage (IS(off)) (Max) | 500pA | 500pA |
| Crosstalk | -90dB @ 1MHz | -94.8dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Package / Case | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole | Through Hole |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
The DG401DJ-E3 manufactured by Vishay Siliconix is the qualified substitute for the obsolete DG401DJ+. Selection of the DG401DJ-E3 is supported by the following factors:
Product Status: The DG401DJ-E3 maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete DG401DJ+.
Functional Equivalence: Both parts share identical switch topology (SPST-NO), circuit count (2), on-state resistance (45Ohm), and package configuration (16-DIP through-hole), ensuring direct functional replacement without circuit redesign.
Compliance Alignment: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, meeting regulatory and environmental requirements.
Performance Characteristics: The DG401DJ-E3 demonstrates equivalent or superior performance in critical parameters including switch timing (150ns/100ns), leakage current (500pA), and crosstalk performance (-94.8dB @ 1MHz versus -90dB @ 1MHz).
Supply Voltage Compatibility: The DG401DJ-E3 supports single supply operation from 13V to 36V and dual supply operation from ±7V to ±22V. Systems designed for the DG401DJ+ operating within these ranges will function without modification.
Frequently Asked Questions (FAQ)
Q: Can the DG401DJ-E3 be used as a direct replacement for the DG401DJ+ without circuit modifications?
A: Yes. Both parts feature identical switch circuit topology, on-state resistance, package configuration, and mounting type. Direct substitution is possible for applications operating within the DG401DJ-E3 supply voltage ranges (13V ~ 36V single supply; ±7V ~ 22V dual supply).
Q: What is the significance of the charge injection difference between the two parts?
A: The DG401DJ+ specifies 10pC charge injection while the DG401DJ-E3 specifies 60pC. Charge injection affects signal settling time and accuracy in precision analog switching applications. Applications sensitive to charge injection performance should evaluate system-level impact before substitution.
Q: Are there any package or pinout differences between these parts?
A: No. Both parts use identical 16-DIP (0.300", 7.62mm) through-hole packaging. Pinout compatibility is maintained, allowing direct PCB-level substitution.
Q: Why is the DG401DJ+ classified as obsolete?
A: The DG401DJ+ is no longer in active production. The DG401DJ-E3 represents the current production equivalent from the same product family, offering equivalent functionality with improved availability.
Q: What supply voltage range should be used when substituting the DG401DJ-E3?
A: The DG401DJ-E3 operates with single supply from 13V to 36V or dual supply from ±7V to ±22V. If the original design used supply voltages below 13V (single) or ±7V (dual), system-level verification is required to confirm operation within the substitute part's specified range.
Q: Is the DG401DJ-E3 RoHS compliant?
A: Yes. The DG401DJ-E3 is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the DG401DJ+.
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