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DG442DJ+ Equivalent & Substitute Parts Reference
Part Overview
The DG442DJ+ is a quad SPST (Single Pole Single Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-pin DIP package. This component functions as a 4-circuit switch with 1:1 multiplexing capability and 85Ω on-state resistance, designed for signal routing and switching applications across industrial and commercial systems.
The DG442DJ+ is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term product availability for legacy systems and new designs requiring compatible switching functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPST - NO (Normally Open) |
| Number of Circuits | 4 |
| Multiplexer/Demultiplexer Configuration | 1:1 |
| On-State Resistance (Max) | 85Ω |
| Channel-to-Channel Matching (ΔRon) | 4Ω (Max) |
| Supply Voltage - Single (V+) | 10V ~ 30V |
| Supply Voltage - Dual (V±) | ±4.5V ~ 20V |
| Switch Time - Ton (Max) | 250ns |
| Switch Time - Toff (Max) | 170ns |
| Charge Injection | 5pC |
| Channel Capacitance - CS(off) | 4pF |
| Channel Capacitance - CD(off) | 4pF |
| Leakage Current - IS(off) (Max) | 500pA |
| Crosstalk | -100dB @ 1MHz |
| Operating Temperature Range | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the DG442DJ+ is determined by the following critical parameters:
Primary Substitution Criteria:
- Switch circuit type: SPST - NO
- Number of circuits: 4
- Multiplexer configuration: 1:1
- Package type: 16-DIP (0.300", 7.62mm)
- Mounting type: Through Hole
- Operating temperature range: -40°C ~ 85°C minimum
Secondary Compatibility Parameters:
- On-state resistance: 85Ω nominal (acceptable range: 70Ω ~ 135Ω with design verification)
- Supply voltage compatibility: Single supply 10V ~ 30V or dual supply ±4.5V ~ 20V
- Switch timing: Ton ≤ 250ns, Toff ≤ 170ns
- Leakage current: ≤ 500pA
- Crosstalk: ≥ -100dB @ 1MHz
Substitute parts are grouped into three categories based on their relationship to the DG442DJ+:
- Parametric Equivalents - Identical electrical specifications and package, different product status or packaging format
- Direct Manufacturer Equivalents - Same part number, confirming baseline compatibility
- Manufacturer-Recommended Alternatives - Active production parts with modified specifications within acceptable operating ranges
Parameter Comparison
| Parameter | DG442DJ+ | DG445DJ+ | ADG442BNZ | ALD4202MPCL | DG442DJ-E3 |
|---|---|---|---|---|---|
| Manufacturer | Analog Devices / Maxim | Analog Devices / Maxim | Analog Devices | Advanced Linear Devices | Vishay Siliconix |
| Product Status | Obsolete | Active | Active | Active | Active |
| Switch Circuit | SPST - NO | SPST - NO | SPST - NO | SPST - NO | SPST - NO |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 |
| Multiplexer Configuration | 1:1 | 1:1 | 1:1 | 1:1 | 1:1 |
| On-State Resistance (Max) | 85Ω | 85Ω | 70Ω | 135Ω | 85Ω |
| Channel-to-Channel Matching (ΔRon) | 4Ω (Max) | 4Ω (Max) | — | 2.7Ω | 4Ω (Max) |
| Supply Voltage - Single (V+) | 10V ~ 30V | 10V ~ 30V | 12V | 3V ~ 12V | 12V |
| Supply Voltage - Dual (V±) | ±4.5V ~ 20V | ±4.5V ~ 20V | ±15V | ±1.5V ~ 6V | ±15V |
| Switch Time - Ton (Max) | 250ns | 250ns | 110ns | 240ns | 250ns |
| Switch Time - Toff (Max) | 170ns | 170ns | 60ns | 130ns | 210ns |
| Charge Injection | 5pC | 5pC | 1pC | 2pC | -1pC |
| Leakage Current - IS(off) (Max) | 500pA | 500pA | 500pA | 100pA | 500pA |
| Crosstalk | -100dB @ 1MHz | -100dB @ 1MHz | -100dB @ 1MHz | -90dB @ 100kHz | -100dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | 0°C ~ 70°C | -40°C ~ 85°C |
| Package / Case | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Replacement (Highest Compatibility):
DG445DJ+ and DG442DJ-E3 are the primary substitutes for the obsolete DG442DJ+. Both maintain identical electrical specifications (85Ω on-state resistance, 4Ω channel matching, ±4.5V ~ 20V dual supply capability) and package configuration. DG445DJ+ is in active production status with tube packaging, while DG442DJ-E3 is manufactured by Vishay Siliconix and also maintains active product status. Both are ROHS3 compliant with MSL 1 rating.
Performance-Enhanced Alternatives:
ADG442BNZ offers improved switching speed (110ns Ton, 60ns Toff versus 250ns/170ns) and reduced charge injection (1pC versus 5pC), making it suitable for applications requiring faster signal routing. However, supply voltage is fixed at 12V single or ±15V dual, limiting flexibility compared to the DG442DJ+ range. This part is recommended only when the fixed supply voltage aligns with system design.
Low-Voltage Applications:
ALD4202MPCL from Advanced Linear Devices supports lower supply voltages (3V ~ 12V single, ±1.5V ~ 6V dual) and features superior leakage current performance (100pA versus 500pA). On-state resistance is higher at 135Ω, and operating temperature range is limited to 0°C ~ 70°C. This part is suitable for battery-powered or low-voltage systems where the higher resistance and narrower temperature range are acceptable.
Compliance and Certification:
All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with modern manufacturing and storage requirements. DG445DJ+, ADG442BNZ, ALD4202MPCL, and DG442DJ-E3 are all in active production, providing long-term supply chain stability compared to the obsolete DG442DJ+.
Frequently Asked Questions (FAQ)
Q: Can DG445DJ+ be used as a direct replacement for DG442DJ+?
A: Yes. DG445DJ+ is a parametric equivalent with identical electrical specifications: 4-circuit SPST switch, 85Ω on-state resistance, 4Ω channel matching, and compatible supply voltage ranges (10V ~ 30V single, ±4.5V ~ 20V dual). Both use 16-DIP packaging. The primary difference is product status (DG445DJ+ is active) and packaging format (tube versus bulk).
Q: What are the key differences between DG442DJ+ and ADG442BNZ?
A: ADG442BNZ offers faster switching performance (110ns/60ns versus 250ns/170ns) and lower charge injection (1pC versus 5pC). However, supply voltage is restricted to 12V single or ±15V dual, whereas DG442DJ+ accepts 10V ~ 30V single or ±4.5V ~ 20V dual. On-state resistance remains 70Ω (better) versus 85Ω. Select ADG442BNZ only if your system operates at the fixed supply voltages and benefits from faster switching.
Q: Is ALD4202MPCL suitable for all DG442DJ+ applications?
A: ALD4202MPCL is suitable only for applications meeting these conditions: (1) supply voltage is 3V ~ 12V single or ±1.5V ~ 6V dual, (2) operating temperature range is 0°C ~ 70°C, and (3) on-state resistance of 135Ω is acceptable. Higher resistance increases signal attenuation and power dissipation. Crosstalk specification is -90dB @ 100kHz versus -100dB @ 1MHz for DG442DJ+.
Q: Are all substitute parts pin-compatible with DG442DJ+?
A: Yes. All substitute parts use 16-DIP (0.300", 7.62mm) through-hole packaging with identical pinout for 4-circuit SPST switching. Direct PCB replacement is possible without layout modification.
Q: Which substitute part has the best long-term availability?
A: DG445DJ+, ADG442BNZ, ALD4202MPCL, and DG442DJ-E3 are all in active production status, providing superior long-term availability compared to the obsolete DG442DJ+. Inventory levels vary by distributor; DG442DJ-E3 and ADG442BNZ typically maintain higher stock levels.
Q: Can I use DG442DJ-E3 as a drop-in replacement?
A: Yes, with one consideration. DG442DJ-E3 maintains identical electrical specifications and 16-DIP packaging. However, supply voltage is fixed at 12V single or ±15V dual, whereas DG442DJ+ accepts wider ranges (10V ~ 30V single, ±4.5V ~ 20V dual). If your system operates within the fixed voltage range, DG442DJ-E3 is a direct replacement.
Q: What is the impact of on-state resistance differences between substitutes?
A: On-state resistance affects signal attenuation and power dissipation. DG442DJ+ and most substitutes specify 85Ω. ADG442BNZ offers 70Ω (lower loss), while ALD4202MPCL specifies 135Ω (higher loss). For audio or precision analog applications, lower resistance is preferable. For digital switching, the difference is typically negligible.
Q: Are all substitutes RoHS compliant?
A: Yes. All substitute parts listed (DG445DJ+, ADG442BNZ, ALD4202MPCL, DG442DJ-E3) are ROHS3 compliant with MSL 1 rating, meeting modern environmental and manufacturing standards.
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