DG508ACWE+ Equivalent & Substitute Parts

Part Overview

The DG508ACWE+ is an 8:1 analog multiplexer/demultiplexer IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-SOIC surface mount package. This interface component features a single circuit configuration with 450Ohm on-state resistance and operates across a dual supply voltage range of ±4.5V to ±18V. The device is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching multiplexer circuit topology (8:1), package type (16-SOIC), and electrical performance parameters within acceptable operational ranges.

Key Parameters

Parameter	DG508ACWE+ Specification
Multiplexer/Demultiplexer Circuit	8:1
Number of Circuits	1
On-State Resistance (Max)	450Ohm
Channel-to-Channel Matching (ΔRon)	27Ohm
Voltage - Supply, Dual (V±)	±4.5V ~ 18V
Switch Time (Ton, Toff) (Max)	1.5µs, 1µs
Channel Capacitance (CS(off), CD(off))	5pF, 25pF
Current - Leakage (IS(off)) (Max)	1nA
Operating Temperature	0°C ~ 70°C (TA)
Package / Case	16-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the DG508ACWE+ is determined by the following criteria:

Primary Matching Criteria:

Multiplexer/Demultiplexer circuit configuration: 8:1
Number of circuits: 1
Package type: 16-SOIC surface mount
On-state resistance compatibility: Parts with on-state resistance ≤450Ohm maximum
Supply voltage compatibility: Dual supply operation within or overlapping ±4.5V ~ 18V range
Leakage current specification: ≤1nA maximum

Secondary Compatibility Factors:

Channel-to-channel matching (ΔRon): Lower values indicate better performance
Switch time performance: Faster switching acceptable for direct substitution
Operating temperature range: Extended ranges (-40°C to 85°C) provide broader application coverage
Product status: Active status ensures ongoing availability and support

Substitute parts are grouped by their electrical performance tier relative to the DG508ACWE+ baseline specifications.

Parameter Comparison

Part Number	Manufacturer	On-State Resistance (Max)	ΔRon (Max)	Voltage - Supply, Dual (V±)	Switch Time Ton/Toff (Max)	Operating Temperature	Package / Case	Inventory Status
DG508ACWE+	Analog Devices Inc./Maxim Integrated	450Ohm	27Ohm	±4.5V ~ 18V	1.5µs, 1µs	0°C ~ 70°C	16-SOIC (0.295", 7.50mm)	882 Pcs
ADG508AKRZ	Analog Devices Inc.	300Ohm	15Ohm	±10.8V ~ 16.5V	300ns, 300ns	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	7089 Pcs
ADG508AKRZ-REEL	Analog Devices Inc.	300Ohm	15Ohm	±10.8V ~ 16.5V	300ns, 300ns	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	3400 Pcs
ADG508AKRZ-REEL7	Analog Devices Inc.	300Ohm	15Ohm	±10.8V ~ 16.5V	300ns, 300ns	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	46621 Pcs
ADG508FBRNZ	Analog Devices Inc.	270Ohm (Typ)	8.1Ohm	±15V	230ns, 130ns	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	16201 Pcs
ADG508FBRNZ-REEL7	Analog Devices Inc.	270Ohm (Typ)	8.1Ohm	±15V	230ns, 130ns	-40°C ~ 85°C	16-SOIC (0.154", 3.90mm)	16438 Pcs
ADG508FBRWZ	Analog Devices Inc.	270Ohm (Typ)	8.1Ohm	±15V	230ns, 130ns	-40°C ~ 85°C	16-SOIC (0.295", 7.50mm)	2096 Pcs
ADG508FBRWZ-REEL	Analog Devices Inc.	270Ohm (Typ)	8.1Ohm	±15V	230ns, 130ns	-40°C ~ 85°C	16-SOIC (0.295", 7.50mm)	3858 Pcs
HI9P0508-5Z	Renesas Electronics Corporation	400Ohm	20Ohm	±15V	250ns, 250ns (Typ)	0°C ~ 75°C	16-SOIC (0.154", 3.90mm)	1669 Pcs
HI9P0508-5Z96	Renesas Electronics Corporation	400Ohm	20Ohm	±15V	250ns, 250ns (Typ)	0°C ~ 75°C	16-SOIC (0.154", 3.90mm)	729 Pcs

Engineering Selection Recommendations

Tier 1 - Direct Performance Upgrade (Recommended for New Designs): ADG508AKRZ, ADG508AKRZ-REEL, and ADG508AKRZ-REEL7 offer superior electrical performance with 300Ohm on-state resistance, improved channel matching (15Ohm), and faster switching times (300ns). These parts maintain ROHS3 compliance and MSL 1 rating. Extended operating temperature range (-40°C to 85°C) supports broader application environments. Package width difference (0.154" vs. 0.295") requires PCB layout verification.

Tier 2 - Enhanced Performance Alternative (Optimized Switching): ADG508FBRNZ, ADG508FBRNZ-REEL7, ADG508FBRWZ, and ADG508FBRWZ-REEL deliver the lowest on-state resistance (270Ohm typical) and fastest switching performance (230ns/130ns). Excellent channel matching (8.1Ohm) ensures signal integrity. Fixed ±15V supply specification requires circuit design confirmation. ROHS3 and MSL 1 compliance maintained. ADG508FBRWZ variants preserve original 0.295" package width for direct PCB substitution.

Tier 3 - Cross-Manufacturer Alternative (Renesas): HI9P0508-5Z and HI9P0508-5Z96 provide 400Ohm on-state resistance with acceptable performance margins. Renesas sourcing offers supply chain diversification. MSL 3 rating (168 hours) requires moisture control during storage and assembly. Operating temperature limited to 0°C ~ 75°C. ROHS3 compliant. Suitable for applications where supply continuity is prioritized.

All substitute parts maintain 8:1 multiplexer configuration, single circuit topology, and 16-SOIC package format. Product status remains Active for all listed alternatives, ensuring long-term availability.

Frequently Asked Questions (FAQ)

Q: Can ADG508AKRZ-REEL7 directly replace DG508ACWE+ on existing PCBs? A: Electrical substitution is valid. However, ADG508AKRZ-REEL7 uses a narrower 16-SOIC package (0.154" width vs. 0.295" width). PCB footprint compatibility must be verified before assembly. Consult PCB layout documentation to confirm pad spacing and via placement accommodate the narrower package.

Q: What is the primary advantage of ADG508FBRNZ over the original DG508ACWE+? A: ADG508FBRNZ reduces on-state resistance from 450Ohm to 270Ohm (typical), improving signal transmission with lower insertion loss. Channel matching improves to 8.1Ohm, enhancing crosstalk performance. Switch time decreases to 230ns/130ns, enabling faster multiplexing operations. Extended temperature range (-40°C to 85°C) supports industrial applications.

Q: Are Renesas HI9P0508 parts suitable for high-reliability applications? A: HI9P0508-5Z and HI9P0508-5Z96 meet ROHS3 compliance and EAR99 export classification. However, MSL 3 rating (168 hours) requires controlled moisture exposure during storage and PCB assembly. Operating temperature range (0°C ~ 75°C) is narrower than Analog Devices alternatives. Evaluate application temperature requirements and manufacturing environment moisture levels before selection.

Q: What packaging differences exist between substitute options? A: ADG508AKRZ variants and ADG508FBRNZ variants use 0.154" width 16-SOIC packages (smaller footprint). ADG508FBRWZ variants and original DG508ACWE+ use 0.295" width 16-SOIC packages (standard footprint). HI9P0508 parts use 0.154" width packages. Verify PCB design accommodates selected package width before procurement.

Q: Can supply voltage be mixed between DG508ACWE+ (±4.5V ~ 18V) and ADG508FBRNZ (±15V fixed)? A: No. ADG508FBRNZ requires fixed ±15V dual supply operation. DG508ACWE+ accepts variable dual supply from ±4.5V to ±18V. Circuit design must confirm power supply architecture matches selected part specification. Substitution is valid only if system provides ±15V supply.

Q: Which substitute offers the best channel-to-channel matching performance? A: ADG508FBRNZ and ADG508FBRNZ-REEL7 provide the tightest channel matching at 8.1Ohm maximum, compared to 27Ohm for DG508ACWE+. This superior matching reduces signal crosstalk and improves multiplexer linearity, beneficial for precision analog signal routing applications.

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