DG508ACJ Equivalent & Substitute Parts

Part Overview

The DG508ACJ is an 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-pin DIP package. This component features a 450Ω on-state resistance and operates across a dual supply voltage range of ±4.5V to ±18V. The DG508ACJ is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while meeting modern compliance standards.

Key Parameters

Parameter	DG508ACJ
Multiplexer Configuration	8:1
Number of Circuits	1
On-State Resistance (Max)	450Ω
Channel-to-Channel Matching (ΔRon)	27Ω
Voltage Supply (Dual)	±4.5V ~ ±18V
Switch Time (Ton/Toff)	1.5µs / 1µs
Channel Capacitance (CS(off)/CD(off))	5pF / 25pF
Leakage Current (IS(off) Max)	1nA
Operating Temperature	0°C ~ 70°C
Package	16-DIP (0.300", 7.62mm)
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the DG508ACJ is determined by the following critical parameters:

Functional Requirements:

Multiplexer configuration must be 8:1
Single circuit topology
16-pin DIP package (0.300", 7.62mm)
Through-hole mounting type

Electrical Compatibility:

On-state resistance tolerance (typically 270Ω to 450Ω acceptable for most applications)
Channel-to-channel matching within acceptable limits
Supply voltage range must encompass or exceed ±4.5V to ±18V
Leakage current specifications (1nA or lower)

Performance Characteristics:

Switch time parameters (Ton/Toff)
Channel capacitance values
Operating temperature range

Compliance & Status:

Active product status preferred for long-term availability
RoHS3 compliance for modern applications
Identical ECCN and HTSUS classifications

Substitute parts are grouped into two categories: direct replacements (DG508ACJ+) and functionally equivalent alternatives with varying electrical characteristics (ADG508AKNZ, ADG508FBNZ, ADG608BNZ, DG408DJZ, DG508BEJ-E3, HI3-0508A-5Z, MPC508AP, MUX08FPZ).

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Max)	ΔRon (Max)	Supply Voltage (Dual)	Ton/Toff (Max)	Operating Temp	Product Status	RoHS Status
DG508ACJ	Analog Devices/Maxim	450Ω	27Ω	±4.5V ~ ±18V	1.5µs / 1µs	0°C ~ 70°C	Obsolete	Non-compliant
DG508ACJ+	Analog Devices/Maxim	450Ω	27Ω	±4.5V ~ ±18V	1.5µs / 1µs	0°C ~ 70°C	Active	RoHS3 Compliant
ADG508AKNZ	Analog Devices	300Ω	15Ω	±10.8V ~ ±16.5V	300ns / 300ns	-40°C ~ 85°C	Active	RoHS3 Compliant
ADG508FBNZ	Analog Devices	270Ω (Typ)	8.1Ω	±15V	230ns / 130ns	-40°C ~ 85°C	Active	RoHS3 Compliant
ADG608BNZ	Analog Devices	30Ω	5Ω (Max)	±5V	75ns / 45ns	-40°C ~ 85°C	Active	RoHS3 Compliant
DG408DJZ	Renesas Electronics	100Ω	15Ω (Max)	±5V ~ ±20V	150ns / 150ns	-40°C ~ 85°C	Active	RoHS3 Compliant
DG508BEJ-E3	Vishay Siliconix	380Ω	10Ω	±5V ~ ±20V	250ns / 240ns	-40°C ~ 125°C	Active	RoHS3 Compliant
HI3-0508A-5Z	Renesas Electronics	1.8kΩ	—	±15V	300ns / 300ns (Typ)	0°C ~ 75°C	Active	RoHS3 Compliant
MPC508AP	Texas Instruments	1.5kΩ	—	±5V ~ ±22V	200ns / 250ns (Typ)	-40°C ~ 85°C	Active	RoHS3 Compliant
MUX08FPZ	Analog Devices	300Ω	21Ω	—	2µs / 400ns	-40°C ~ 85°C	Active	RoHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Preferred for Pin-Compatible Substitution):

DG508ACJ+ is the recommended direct substitute. It maintains identical electrical specifications and package configuration while offering active product status and RoHS3 compliance. This part is suitable for applications requiring minimal design changes.

Functionally Equivalent Alternatives (Application-Dependent Selection):

Selection among alternative parts depends on specific application requirements:

ADG508AKNZ, ADG508FBNZ, MUX08FPZ: Lower on-state resistance (270Ω–300Ω) and faster switching times (130ns–400ns) suit high-speed signal routing and low-impedance applications. Extended operating temperature range (-40°C to 85°C) supports industrial environments.
ADG608BNZ: Lowest on-state resistance (30Ω) and fastest switching (45ns–75ns) for low-voltage (±5V) applications requiring minimal signal attenuation and high bandwidth performance.
DG408DJZ: Moderate on-state resistance (100Ω) with wide supply voltage range (±5V to ±20V) and extended temperature capability (-40°C to 125°C) for versatile industrial and automotive applications.
DG508BEJ-E3: On-state resistance (380Ω) closely matches the original DG508ACJ with superior temperature range (-40°C to 125°C), -88dB crosstalk @ 1MHz, and 250MHz bandwidth for precision analog signal switching.
HI3-0508A-5Z, MPC508AP: Higher on-state resistance (1.5kΩ–1.8kΩ) suitable for high-impedance signal routing and applications where lower power dissipation is prioritized over impedance matching.

All substitute parts maintain 8:1 multiplexer configuration, single-circuit topology, and 16-DIP package compatibility. All active alternatives carry RoHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can DG508ACJ+ be used as a direct drop-in replacement for DG508ACJ?

A: Yes. DG508ACJ+ maintains identical electrical specifications, package dimensions, and pin configuration. The primary differences are active product status and RoHS3 compliance. No circuit modifications are required.

Q: What is the key difference between DG508ACJ and ADG508AKNZ?

A: ADG508AKNZ features lower on-state resistance (300Ω vs. 450Ω), faster switching times (300ns vs. 1.5µs/1µs), and a narrower supply voltage range (±10.8V–±16.5V vs. ±4.5V–±18V). ADG508AKNZ is suitable for applications requiring faster signal switching and lower impedance, but requires verification of supply voltage compatibility.

Q: Which substitute part is best for low-voltage applications?

A: ADG608BNZ is optimized for low-voltage operation (±5V) with the lowest on-state resistance (30Ω) and fastest switching times (45ns–75ns). It is ideal for 3.3V and 5V logic-level applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance status. The original DG508ACJ is RoHS non-compliant; DG508ACJ+ and all alternatives meet modern RoHS3 requirements.

Q: What is the operating temperature range difference between DG508ACJ and DG508BEJ-E3?

A: DG508ACJ operates from 0°C to 70°C, while DG508BEJ-E3 extends to -40°C to 125°C. DG508BEJ-E3 is suitable for automotive, industrial, and extended-temperature applications.

Q: Can I use MPC508AP or HI3-0508A-5Z as direct replacements?

A: These parts are functionally equivalent but not direct pin-compatible substitutes. Both feature significantly higher on-state resistance (1.5kΩ and 1.8kΩ respectively) and are suitable only for high-impedance signal routing applications. Circuit verification is required before substitution.

Q: What packaging options are available for substitute parts?

A: All substitute parts are supplied in 16-pin DIP (0.300", 7.62mm) through-hole packages with tube packaging. This maintains mechanical compatibility with the original DG508ACJ footprint.

Q: Which substitute offers the best crosstalk performance?

A: DG508BEJ-E3 specifies -88dB crosstalk @ 1MHz, and MUX08FPZ specifies -70dB crosstalk @ 500kHz. DG508BEJ-E3 is recommended for precision analog applications requiring superior channel isolation.

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