DG306ACJ Equivalent & Substitute Parts

Part Overview

The DG306ACJ is a 2-circuit IC switch with DPST-NO configuration and 50Ohm on-state resistance, manufactured by Analog Devices Inc./Maxim Integrated. This component functions as a 2:1 multiplexer/demultiplexer for analog signal switching applications. The DG306ACJ is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Switch Circuit Type	DPST - NO
Multiplexer/Demultiplexer Configuration	2:1
Number of Circuits	2
On-State Resistance (Max)	50Ohm
Voltage Supply Range (Dual)	±5V ~ 18V
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 (TA)
Package / Case	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the DG306ACJ is determined by strict equivalence across the following critical parameters:

Switch circuit topology: DPST - NO configuration
Multiplexer function: 2:1 switching capability
Circuit count: 2 independent circuits
On-state resistance: 50Ohm maximum
Supply voltage range: ±5V ~ 18V dual supply compatibility
Electrical characteristics: Charge injection (12pC), channel capacitance (14pF), leakage current (5nA), and crosstalk (-74dB @ 500kHz)
Physical form factor: 14-DIP package with through-hole mounting
Operating temperature: 0°C ~ 70°C range

The DG302ACJ+ meets all these criteria and is designated as the manufacturer-recommended substitute. Both parts share identical functional specifications and package geometry, enabling direct replacement in existing designs.

Parameter Comparison

Parameter	DG306ACJ (Main Part)	DG302ACJ+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Switch Circuit	DPST - NO	DPST - NO
Multiplexer Configuration	2:1	2:1
Number of Circuits	2	2
On-State Resistance (Max)	50Ohm	50Ohm
Voltage Supply (Dual)	±5V ~ 18V	±5V ~ 18V
Switch Time Ton (Max)	250ns	300ns
Switch Time Toff (Max)	150ns	250ns
Charge Injection	12pC	12pC
Channel Capacitance (CS(off), CD(off))	14pF, 14pF	14pF, 14pF
Current - Leakage (IS(off)) (Max)	5nA	5nA
Crosstalk	-74dB @ 500kHz	-74dB @ 500kHz
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
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
Packaging	Not specified	Tube

Engineering Selection Recommendations

The DG302ACJ+ is the appropriate substitute for the obsolete DG306ACJ based on the following factors:

Product Status: The DG306ACJ is obsolete, while the DG302ACJ+ maintains active product status, ensuring continued availability and manufacturer support.

Compliance: The DG302ACJ+ is ROHS3 compliant, whereas the DG306ACJ is RoHS non-compliant. This distinction is significant for applications subject to environmental regulations and procurement standards.

Electrical Equivalence: Both parts maintain identical core electrical specifications across all critical parameters: switch topology, multiplexer configuration, on-state resistance, supply voltage range, charge injection, channel capacitance, leakage current, and crosstalk performance.

Timing Characteristics: The DG302ACJ+ exhibits slightly longer switch times (300ns Ton, 250ns Toff) compared to the DG306ACJ (250ns Ton, 150ns Toff). This difference is acceptable for applications where switching speed is not a critical constraint.

Physical Compatibility: Both components use identical 14-DIP through-hole packaging, enabling direct PCB-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the DG302ACJ+ be used as a direct replacement for the DG306ACJ in existing designs?

A: Yes. Both parts share identical switch topology, circuit count, on-state resistance, supply voltage range, and package geometry. The DG302ACJ+ can be substituted directly on the PCB without design modifications.

Q: What is the difference in switching speed between these parts?

A: The DG306ACJ has faster switching times (250ns Ton, 150ns Toff) compared to the DG302ACJ+ (300ns Ton, 250ns Toff). For applications requiring high-speed switching, verify that the DG302ACJ+ timing specifications meet system requirements before implementation.

Q: Why is RoHS compliance important for this substitution?

A: The DG302ACJ+ is ROHS3 compliant while the DG306ACJ is not. For new designs or systems subject to environmental regulations, the DG302ACJ+ provides compliance assurance. For legacy system maintenance, compliance requirements depend on application context and regional standards.

Q: Are there any packaging differences between these parts?

A: The DG302ACJ+ is supplied in tube packaging, while the DG306ACJ packaging is not specified. Both use the same 14-DIP form factor and through-hole mounting configuration.

Q: What electrical parameters remain identical between the DG306ACJ and DG302ACJ+?

A: Charge injection (12pC), channel capacitance (14pF), leakage current (5nA), crosstalk (-74dB @ 500kHz), on-state resistance (50Ohm), supply voltage range (±5V ~ 18V), and operating temperature range (0°C ~ 70°C) are identical across both parts.

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