DG301ACJ Equivalent & Substitute Parts

Part Overview

The DG301ACJ 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 requiring low on-resistance and fast switching performance.

The DG301ACJ is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support legacy system maintenance or redesign initiatives.

Key Parameters

Parameter	Value	Unit
Switch Circuit Type	SPDT	—
Multiplexer/Demultiplexer Configuration	2:1	—
Number of Circuits	1	—
On-State Resistance (Max)	50	Ohm
Voltage Supply (Dual)	±5V ~ ±18V	V
Switch Time (Ton/Toff Max)	300ns / 250ns	ns
Charge Injection	12	pC
Channel Capacitance (CS(off)/CD(off))	14pF / 14pF	pF
Leakage Current (IS(off) Max)	5	nA
Crosstalk	−74	dB @ 500kHz
Operating Temperature	0°C ~ 70°C	—
Package / Case	14-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution eligibility for the DG301ACJ is determined by strict equivalence across the following critical parameters:

Switch circuit topology (SPDT)
Multiplexer configuration (2:1)
Number of circuits (1)
On-state resistance specification (50Ohm maximum)
Dual supply voltage range (±5V ~ ±18V)
Switching time performance (Ton ≤ 300ns, Toff ≤ 250ns)
Charge injection (12pC)
Channel capacitance values (14pF each)
Leakage current specification (5nA maximum)
Crosstalk performance (−74dB @ 500kHz)
Operating temperature range (0°C ~ 70°C)
Package form factor (14-DIP through-hole)

The DG301ACJ+ meets all these criteria and qualifies as a direct substitute. The primary distinction is product status and compliance certification.

Parameter Comparison

Parameter	DG301ACJ (Main Part)	DG301ACJ+ (Substitute)
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated
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
Packaging	Not specified	Tube

Engineering Selection Recommendations

The DG301ACJ+ is the direct functional equivalent of the DG301ACJ. All electrical and mechanical parameters are identical. Selection between these parts should be based on the following factors:

Product Status: The DG301ACJ is obsolete, while the DG301ACJ+ is active. For new designs or long-term supply requirements, the DG301ACJ+ is the appropriate choice.

Compliance Certification: The DG301ACJ+ carries ROHS3 compliance, whereas the DG301ACJ is RoHS non-compliant. Applications subject to RoHS regulations or customer compliance requirements must use the DG301ACJ+.

Packaging: The DG301ACJ+ is supplied in tube packaging, which may affect procurement, handling, and assembly processes compared to the main part's unspecified packaging.

Electrical Equivalence: Both parts are electrically and mechanically identical. Pin configuration, signal integrity, and performance characteristics are equivalent across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the DG301ACJ+ be used as a direct replacement for the DG301ACJ in existing designs?

A: Yes. The DG301ACJ+ is electrically and mechanically equivalent to the DG301ACJ. All functional parameters, pin assignments, and performance specifications are identical. The primary differences are product status (active vs. obsolete) and RoHS compliance certification.

Q: What is the significance of the product status difference (Obsolete vs. Active)?

A: Obsolete parts are no longer manufactured or supported by the vendor. The DG301ACJ+ is actively produced, ensuring long-term availability, technical support, and supply chain reliability. For new designs or systems requiring extended operational life, the active DG301ACJ+ is the recommended choice.

Q: Are there RoHS compliance implications when substituting the DG301ACJ with the DG301ACJ+?

A: Yes. The DG301ACJ is RoHS non-compliant, while the DG301ACJ+ is ROHS3 compliant. If your application or customer requirements mandate RoHS compliance, the DG301ACJ+ must be used.

Q: Is the 14-DIP through-hole package identical between both parts?

A: Yes. Both the DG301ACJ and DG301ACJ+ use the same 14-DIP (0.300", 7.62mm) through-hole package. PCB footprints and mounting procedures are identical.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is based on matching switch circuit type (SPDT), multiplexer configuration (2:1), on-state resistance (50Ohm), dual supply voltage range (±5V ~ ±18V), switching time specifications (300ns/250ns), charge injection (12pC), channel capacitance (14pF each), leakage current (5nA), crosstalk performance (−74dB @ 500kHz), and operating temperature range (0°C ~ 70°C).

Q: Are there any performance differences between the DG301ACJ and DG301ACJ+?

A: No. All electrical performance parameters are identical. Both parts deliver equivalent switching speed, signal integrity, and analog performance.

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