DG384ACK Equivalent & Substitute Parts

Part Overview

The DG384ACK is a 2-circuit IC switch with DPST-NO configuration and 50Ohm on-state resistance in 14-CDIP packaging, manufactured by Analog Devices Inc./Maxim Integrated. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The DG384ACK operates with dual supply voltage (±5V ~ 18V) and is suitable for applications requiring precision analog switching with low on-state resistance and minimal crosstalk performance.

Substiute Parts

DG384ACK

Analog Devices Inc./Maxim IntegratedIn Stock: 1201DG384ACK Datasheet

Current PartRFQ

DG302ACJ+

Analog Devices Inc./Maxim IntegratedIn Stock: 1269DG302ACJ+ Datasheet

MFR RecommendedRFQ

MAX305CPE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1207MAX305CPE+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DG384ACK is determined by the following critical parameters that must be maintained or improved:

Core Functional Requirements:

• Switch circuit type: DPST - NO (maintained across all substitutes)
• Multiplexer/Demultiplexer circuit: 2:1 (maintained across all substitutes)
• Number of circuits: 2 (maintained across all substitutes)

Electrical Performance Criteria:

• On-state resistance: 50Ohm maximum (DG302ACJ+ maintains 50Ohm; MAX305CPE+ improves to 35Ohm)
• Dual supply voltage range: ±5V ~ 18V (DG302ACJ+ maintains range; MAX305CPE+ extends to ±4.5V ~ 20V)
• Charge injection: 12pC (DG302ACJ+ maintains 12pC; MAX305CPE+ improves to 10pC)
• Channel capacitance: 14pF (DG302ACJ+ maintains 14pF; MAX305CPE+ improves to 12pF)
• Leakage current: 5nA maximum (DG302ACJ+ maintains 5nA; MAX305CPE+ improves to 500pA)
• Crosstalk: -74dB @ 500kHz (DG302ACJ+ maintains -74dB @ 500kHz; MAX305CPE+ improves to -90dB @ 1MHz)

Packaging and Mounting:

• Through-hole mounting type (maintained across all substitutes)
• Package footprint compatibility considerations apply

Compliance and Status:

• Product status transition from obsolete to active availability
• RoHS compliance status differences

Parameter Comparison

Engineering Selection Recommendations

DG302ACJ+ Selection Criteria: The DG302ACJ+ maintains electrical parameter equivalence with the DG384ACK across all critical switching specifications: identical on-state resistance (50Ohm), dual supply voltage range (±5V ~ 18V), switch timing (300ns, 250ns), charge injection (12pC), channel capacitance (14pF), and crosstalk performance (-74dB @ 500kHz). The primary differences are product status (active vs. obsolete) and RoHS compliance (ROHS3 compliant). The operating temperature range narrows from -55°C ~ 125°C to 0°C ~ 70°C. Package footprint remains compatible at 14-DIP (0.300", 7.62mm). This substitute is appropriate for applications where the narrower temperature range is acceptable and RoHS compliance is required.

MAX305CPE+ Selection Criteria: The MAX305CPE+ provides improved electrical performance across multiple parameters: reduced on-state resistance (35Ohm vs. 50Ohm), faster switch timing (150ns, 100ns vs. 300ns, 250ns), lower charge injection (10pC vs. 12pC), reduced channel capacitance (12pF vs. 14pF), and superior crosstalk performance (-90dB @ 1MHz vs. -74dB @ 500kHz). Supply voltage range extends to ±4.5V ~ 20V with leakage current reduced to 500pA. The product is active and ROHS3 compliant. Operating temperature range is 0°C ~ 70°C. Package footprint is 16-DIP (0.300", 7.62mm), requiring PCB layout modification. This substitute is appropriate for applications requiring enhanced performance specifications and where PCB redesign is feasible.

Frequently Asked Questions (FAQ)

Q: Can DG302ACJ+ directly replace DG384ACK without PCB modifications?

A: The DG302ACJ+ uses 14-DIP packaging with the same 0.300" (7.62mm) pitch as the DG384ACK's 14-CDIP package. Pin-to-pin compatibility exists for through-hole mounting. However, verify pinout alignment with device datasheets before implementation, as CDIP and DIP packages may have different lead configurations.

Q: What are the temperature range implications when substituting with DG302ACJ+ or MAX305CPE+?

A: Both substitutes operate within 0°C ~ 70°C, compared to the DG384ACK's -55°C ~ 125°C range. Applications requiring operation below 0°C or above 70°C cannot use these substitutes. Verify your system's operating temperature requirements before selection.

Q: Does MAX305CPE+ require PCB layout changes?

A: Yes. The MAX305CPE+ uses 16-DIP packaging versus the DG384ACK's 14-CDIP. The additional pins and different package footprint require PCB redesign. Verify pinout compatibility and signal routing before implementation.

Q: Are both substitutes RoHS compliant?

A: Yes. Both DG302ACJ+ and MAX305CPE+ are ROHS3 compliant, whereas the DG384ACK is RoHS non-compliant. This is relevant for applications subject to RoHS regulations.

Q: Which substitute provides better electrical performance?

A: MAX305CPE+ offers superior performance: lower on-state resistance (35Ohm), faster switching (150ns/100ns), lower leakage current (500pA), and better crosstalk (-90dB @ 1MHz). DG302ACJ+ maintains electrical equivalence with the DG384ACK. Selection depends on performance requirements and PCB redesign feasibility.

Q: Can I use MAX305CPE+ in applications requiring extended temperature range?

A: No. MAX305CPE+ operates only within 0°C ~ 70°C. Applications requiring -55°C ~ 125°C operation cannot use this substitute. Verify temperature specifications before selection.

Q: What is the supply voltage compatibility between substitutes and the original part?

A: DG384ACK and DG302ACJ+ both support ±5V ~ 18V dual supply. MAX305CPE+ extends this to ±4.5V ~ 20V, providing broader supply voltage compatibility. All three parts support the same minimum supply voltage of ±5V.