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DG387ACJ Equivalent & Substitute Parts
Part Overview
The DG387ACJ is a single-circuit SPDT (Single Pole Double Throw) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. This 14-DIP through-hole component provides 2:1 multiplexing functionality with 50Ohm on-state resistance, designed for signal routing and switching applications in analog circuits. The DG387ACJ is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPDT |
| Multiplexer/Demultiplexer Configuration | 2:1 |
| Number of Circuits | 1 |
| On-State Resistance (Max) | 50Ohm |
| Voltage Supply (Dual) | ±5V ~ 18V |
| Switch Time (Ton/Toff Max) | 300ns / 250ns |
| Charge Injection | 12pC |
| Channel Capacitance (CS(off)/CD(off)) | 14pF / 14pF |
| Leakage Current (IS(off) Max) | 5nA |
| Crosstalk | -74dB @ 500kHz |
| Operating Temperature | 0°C ~ 70°C |
| Package Type | 14-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
Substitute Part Grouping Explanation
Substitution of the DG387ACJ is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications for switch circuit topology (SPDT), multiplexer configuration (2:1), on-state resistance (50Ohm), dual supply voltage range (±5V ~ 18V), switching time characteristics (300ns/250ns), charge injection (12pC), channel capacitance (14pF each), leakage current (5nA), crosstalk performance (-74dB @ 500kHz), operating temperature range (0°C ~ 70°C), and physical package format (14-DIP through-hole).
The DG301ACJ+ qualifies as a parametric equivalent based on complete alignment with these key parameters. The primary distinction between the main part and substitute is product status and compliance certification, not functional or electrical characteristics.
Parameter Comparison
| Parameter | DG387ACJ | DG301ACJ+ |
|---|---|---|
| Switch Circuit | SPDT | SPDT |
| Multiplexer Configuration | 2:1 | 2:1 |
| Number of Circuits | 1 | 1 |
| On-State Resistance (Max) | 50Ohm | 50Ohm |
| Voltage Supply (Dual) | ±5V ~ 18V | ±5V ~ 18V |
| Switch Time Ton (Max) | 300ns | 300ns |
| Switch Time Toff (Max) | 250ns | 250ns |
| Charge Injection | 12pC | 12pC |
| Channel Capacitance CS(off) | 14pF | 14pF |
| Channel Capacitance CD(off) | 14pF | 14pF |
| Leakage Current IS(off) (Max) | 5nA | 5nA |
| Crosstalk | -74dB @ 500kHz | -74dB @ 500kHz |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Package / Case | 14-DIP (0.300", 7.62mm) | 14-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole | Through Hole |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The DG301ACJ+ serves as the direct parametric equivalent for the obsolete DG387ACJ. Both parts are manufactured by Analog Devices Inc./Maxim Integrated and share identical electrical and mechanical specifications across all functional parameters.
Selection between these parts is determined by regulatory and compliance requirements rather than technical performance. The DG387ACJ is classified as obsolete and RoHS non-compliant. The DG301ACJ+ is an active product with ROHS3 compliance certification, making it the appropriate choice for new designs and systems requiring current regulatory adherence. Both parts maintain REACH Unaffected status and EAR99 export classification.
For legacy system maintenance where the original DG387ACJ is required, the DG301ACJ+ provides electrical and functional interchangeability with the added benefit of active product support and modern compliance certifications.
Frequently Asked Questions (FAQ)
Q: Can the DG301ACJ+ directly replace the DG387ACJ in existing circuits?
A: Yes. The DG301ACJ+ is a parametric equivalent with identical electrical specifications, switching characteristics, and 14-DIP through-hole package format. No circuit modifications are required for direct substitution.
Q: What is the primary difference between these two parts?
A: The DG387ACJ is obsolete and RoHS non-compliant, while the DG301ACJ+ is an active product with ROHS3 compliance. All electrical and mechanical parameters are identical.
Q: Are there any package or pinout differences?
A: No. Both parts use the 14-DIP (0.300", 7.62mm) through-hole package with identical pinout and mounting requirements.
Q: Why should I use the DG301ACJ+ instead of the DG387ACJ?
A: The DG301ACJ+ is an active product with current manufacturer support and ROHS3 compliance certification. The DG387ACJ is obsolete and may face supply constraints. For new designs and systems requiring regulatory compliance, the DG301ACJ+ is the appropriate selection.
Q: Do both parts have the same supply voltage requirements?
A: Yes. Both parts operate with dual supply voltage range of ±5V ~ 18V and are suitable for identical power supply configurations.
Q: Are the switching time and signal integrity characteristics identical?
A: Yes. Both parts maintain identical switch times (300ns/250ns), charge injection (12pC), channel capacitance (14pF each), leakage current (5nA), and crosstalk performance (-74dB @ 500kHz).
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