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DG300ACJ Equivalent & Substitute Parts
Part Overview
The DG300ACJ is a 2-circuit IC switch with SPST-NO (Single Pole Single Throw - Normally Open) configuration, designed for 50Ohm impedance matching applications in 14-DIP packaging. This component is classified as obsolete, making identification of suitable substitutes necessary for ongoing system support and new designs requiring equivalent functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Switch Circuit Type | SPST - NO |
| Multiplexer/Demultiplexer Configuration | 1:1 |
| Number of Circuits | 2 |
| On-State Resistance (Max) | 50Ohm |
| Voltage Supply Range (Dual) | ±5V ~ 18V |
| Switch Time (Ton/Toff Max) | 300ns / 250ns |
| Charge Injection | 12pC |
| Channel Capacitance (CS(off)/CD(off)) | 14pF / 14pF |
| Current Leakage (IS(off) Max) | 5nA |
| Crosstalk | -74dB @ 500kHz |
| Operating Temperature Range | 0°C ~ 70°C |
| Package Type | 14-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
Substitute Part Grouping Explanation
Substitution eligibility for the DG300ACJ is determined by strict equivalence across the following critical parameters:
- Switch circuit topology (SPST - NO configuration)
- Multiplexer/demultiplexer ratio (1:1)
- Number of independent circuits (2)
- On-state resistance specification (50Ohm maximum)
- Dual supply voltage range (±5V ~ 18V)
- Switching time characteristics (300ns Ton, 250ns Toff maximum)
- Charge injection (12pC)
- Channel capacitance values (14pF each)
- Leakage current specification (5nA maximum)
- Crosstalk performance (-74dB @ 500kHz)
- Operating temperature range (0°C ~ 70°C)
- Physical package format (14-DIP through-hole)
The DG300ACJ+ meets all these criteria and qualifies as a direct substitute based on identical electrical and mechanical specifications.
Parameter Comparison
| Parameter | DG300ACJ (Main Part) | DG300ACJ+ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Product Status | Obsolete | Active |
| Switch Circuit | SPST - NO | SPST - NO |
| Multiplexer Configuration | 1:1 | 1:1 |
| Number of Circuits | 2 | 2 |
| 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 |
| Current Leakage 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 |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The DG300ACJ+ is a direct functional equivalent to the DG300ACJ. Both components share identical electrical specifications and physical packaging, enabling pin-for-pin substitution in existing designs.
The primary distinction between these parts is product lifecycle status and regulatory compliance. The DG300ACJ is obsolete, while the DG300ACJ+ maintains active production status. Additionally, the DG300ACJ+ achieves ROHS3 compliance, whereas the original DG300ACJ does not meet RoHS requirements. Both components maintain REACH Unaffected status.
For new designs or system refreshes, the DG300ACJ+ is the appropriate selection due to its active availability and enhanced regulatory compliance posture.
Frequently Asked Questions (FAQ)
Q: Can the DG300ACJ+ replace the DG300ACJ in existing applications?
A: Yes. The DG300ACJ+ provides identical electrical performance and physical compatibility. Both components feature the same 50Ohm on-state resistance, 2-circuit SPST-NO configuration, ±5V ~ 18V dual supply range, and 14-DIP through-hole package. Direct substitution is supported without circuit modification.
Q: What is the significance of the product status difference?
A: The DG300ACJ is classified as obsolete, indicating discontinued manufacturing and limited availability. The DG300ACJ+ maintains active production status, ensuring reliable long-term supply for new designs and system maintenance.
Q: How does RoHS compliance affect component selection?
A: The DG300ACJ+ achieves ROHS3 compliance, meeting current environmental and material restriction standards. The original DG300ACJ does not comply with RoHS requirements. For applications subject to RoHS mandates or customer specifications, the DG300ACJ+ is the required selection.
Q: Are there any package or pinout differences between these parts?
A: No. Both the DG300ACJ and DG300ACJ+ use identical 14-DIP (0.300", 7.62mm) through-hole packaging with matching pinout and mechanical dimensions. PCB layout and socket compatibility are fully preserved.
Q: What electrical parameters determine substitution eligibility?
A: Substitution is based on equivalence across switch topology (SPST-NO), circuit count (2), impedance (50Ohm), supply voltage range (±5V ~ 18V), switching time (300ns/250ns), charge injection (12pC), capacitance (14pF), leakage current (5nA), crosstalk (-74dB @ 500kHz), and operating temperature (0°C ~ 70°C).
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