DG304ACJ Equivalent & Substitute Parts

Part Overview

The DG304ACJ 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 essential for ongoing system support and new design implementations. The part operates across a dual supply voltage range of ±5V to ±18V with switching times of 250ns (turn-on) and 150ns (turn-off).

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 - Turn On (Max)	250ns
Switch Time - Turn Off (Max)	150ns
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)
Mounting Type	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)
Supplier Device Package	14-PDIP

Substitute Part Grouping Explanation

Substitution eligibility for the DG304ACJ is determined by strict equivalence across the following critical parameters:

Switch circuit topology (SPST - NO configuration)
Multiplexer/demultiplexer ratio (1:1)
Number of circuits (2)
On-state resistance specification (50Ohm maximum)
Dual supply voltage range (±5V ~ 18V)
Switching time specifications (250ns turn-on, 150ns turn-off maximum)
Charge injection (12pC)
Channel capacitance values (14pF for both CS(off) and CD(off))
Leakage current specification (5nA maximum)
Crosstalk performance (-74dB @ 500kHz)
Operating temperature range (0°C ~ 70°C)
Physical package format (14-DIP through-hole)

The DG304ACJ+ qualifies as a direct substitute based on identical electrical and mechanical specifications across all provided parameters.

Parameter Comparison

Parameter	DG304ACJ	DG304ACJ+
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
Switch Circuit	SPST - NO	SPST - NO
Multiplexer/Demultiplexer Circuit	1:1	1:1
Number of Circuits	2	2
On-State Resistance (Max)	50Ohm	50Ohm
Voltage - Supply, Dual (V±)	±5V ~ 18V	±5V ~ 18V
Switch Time - Ton (Max)	250ns	250ns
Switch Time - Toff (Max)	150ns	150ns
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)
Mounting Type	Through Hole	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Supplier Device Package	14-PDIP	14-PDIP
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging Type	Not specified	Tube

Engineering Selection Recommendations

The DG304ACJ+ is the direct functional equivalent of the DG304ACJ. Selection between these parts should be based on the following factors:

Product Status: The DG304ACJ is obsolete, while the DG304ACJ+ maintains active product status. For new designs and long-term system support, the DG304ACJ+ is the appropriate choice.

Regulatory Compliance: The DG304ACJ+ is ROHS3 compliant, whereas the original DG304ACJ is RoHS non-compliant. Systems requiring RoHS compliance must use the DG304ACJ+.

Packaging: The DG304ACJ+ is supplied in tube packaging, which may differ from the original part's packaging configuration. Verify packaging compatibility with existing assembly processes and inventory management systems.

Electrical Performance: Both parts are electrically identical across all specified parameters, ensuring direct functional interchangeability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the DG304ACJ+ be used as a direct replacement for the DG304ACJ in existing designs?

A: Yes. The DG304ACJ+ provides identical electrical performance across all specified parameters, including switch circuit topology, impedance, supply voltage range, switching times, and signal integrity characteristics. Physical package dimensions and mounting type are also identical.

Q: What is the primary reason to transition from DG304ACJ to DG304ACJ+?

A: The DG304ACJ is classified as obsolete. The DG304ACJ+ is an active product with identical electrical specifications, ensuring continued availability and supply chain reliability. Additionally, the DG304ACJ+ meets ROHS3 compliance requirements.

Q: Are there any differences in electrical performance between these parts?

A: No. Both parts meet identical specifications for on-state resistance (50Ohm), supply voltage range (±5V ~ 18V), switching times (250ns/150ns), charge injection (12pC), channel capacitance (14pF), leakage current (5nA), and crosstalk performance (-74dB @ 500kHz).

Q: Does the packaging difference between the two parts affect circuit compatibility?

A: No. Both parts use identical 14-DIP through-hole packaging with 0.300" (7.62mm) pitch. The packaging difference refers only to the supplier delivery format (tube for DG304ACJ+), not the component package itself.

Q: What compliance certifications apply to each part?

A: The DG304ACJ is RoHS non-compliant. The DG304ACJ+ is ROHS3 compliant. Both parts are REACH unaffected and classified under ECCN EAR99 and HTSUS 8542.39.0001.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both parts operate across the identical temperature range of 0°C to 70°C (TA).

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