IL 710-3B Digital Isolator Equivalent & Substitute Parts

Part Overview

The IL 710-3B is a general purpose digital isolator manufactured by NVE Corp, part of the IsoLoop® series. This component provides 2500Vrms isolation with single-channel unidirectional signal transmission, utilizing Giant Magnetoresistive (GMR) technology. The device operates at 110Mbps data rate with 100kV/µs common mode transient immunity in an 8-SOIC surface mount package.

The IL 710-3B is classified as obsolete. Equivalent substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and legacy system support. Broadcom Limited offers functionally compatible alternatives through its HCPL series, which maintain electrical compatibility while offering improved product status and compliance certifications.

Substiute Parts

IL 710-3B

NVE Corp/Isolation ProductsIn Stock: 1055IL 710-3B Datasheet

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HCPL-0900

Broadcom LimitedIn Stock: 3807HCPL-0900 Datasheet

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HCPL-0900-000E

Broadcom LimitedIn Stock: 86432HCPL-0900-000E Datasheet

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HCPL-0900-500E

Broadcom LimitedIn Stock: 3314HCPL-0900-500E Datasheet

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HCPL-9000-300E

Broadcom LimitedIn Stock: 1201HCPL-9000-300E Datasheet

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HCPL-9000-500

Broadcom LimitedIn Stock: 931HCPL-9000-500 Datasheet

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HCPL-9000-500E

Broadcom LimitedIn Stock: 992HCPL-9000-500E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IL 710-3B are selected based on strict electrical and mechanical compatibility criteria. The following parameters must match or exceed the main part specifications:

Critical Matching Parameters:

• Voltage - Isolation: 2500Vrms (exact match required)
• Number of Channels: 1 (exact match required)
• Channel Type: Unidirectional (exact match required)
• Data Rate: 110Mbps or higher (110MBd equivalent)
• Propagation Delay tpLH / tpHL (Max): 15ns / 15ns (exact match)
• Pulse Width Distortion (Max): 3ns (exact match)
• Operating Temperature: -55°C ~ 125°C (exact match required)
• Technology: GMR (Giant Magnetoresistive) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (exact match required)

Allowable Variations:

• Common Mode Transient Immunity: Substitute parts specify 15kV/µs, which is lower than the main part's 100kV/µs. This represents a functional difference that must be evaluated for specific application requirements.
• Package / Case: Substitutes are available in 8-SOIC (0.154", 3.90mm Width) or 8-SMD Gull Wing configurations. Package selection depends on PCB layout and assembly process compatibility.
• Packaging Format: Tube, Tape & Reel (TR), or other formats based on procurement requirements.
• RoHS Status: Substitutes include both RoHS3 compliant and non-compliant options.

All substitute parts are manufactured by Broadcom Limited and maintain active product status, ensuring long-term availability and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

For 8-SOIC Package Applications:

The HCPL-0900-000E is the primary substitute for IL 710-3B in applications requiring the 8-SOIC (0.154", 3.90mm Width) package format. This part maintains electrical compatibility across all critical parameters and offers ROHS3 compliance with the highest inventory availability (86,400 units). The HCPL-0900-000E is supplied in Tube packaging format.

The HCPL-0900-500E provides an alternative in the same package with Tape & Reel (TR) packaging, suitable for high-volume automated assembly processes. Both parts are active products with long-term availability assurance.

The HCPL-0900 (non-compliant variant) is available in Tube format with 3,700 units in stock, offering cost optimization for applications where RoHS compliance is not required.

For 8-SMD Gull Wing Package Applications:

The HCPL-9000-500E is the recommended substitute for applications requiring the 8-SMD Gull Wing package configuration. This part is ROHS3 compliant and supplied in Tape & Reel (TR) format, optimized for automated assembly. The HCPL-9000-500E maintains all critical electrical parameters with active product status.

The HCPL-9000-300E provides an alternative in the same package with Tube packaging format and ROHS3 compliance.

The HCPL-9000-500 (non-compliant variant) is available in Tape & Reel format for applications where RoHS compliance is not required.

Critical Consideration:

All Broadcom substitute parts specify 15kV/µs common mode transient immunity, compared to the IL 710-3B's 100kV/µs specification. Applications requiring the higher CMTI rating of the original part must evaluate whether the reduced CMTI of substitute parts is acceptable for the specific circuit environment and noise conditions.

Frequently Asked Questions (FAQ)

Q: Can HCPL-0900 series parts directly replace IL 710-3B in existing designs?

A: HCPL-0900 series parts (HCPL-0900, HCPL-0900-000E, HCPL-0900-500E) are electrically compatible with IL 710-3B for applications using the 8-SOIC package. All critical parameters including isolation voltage, data rate, propagation delay, and operating temperature range match the original specification. The primary difference is the reduced common mode transient immunity (15kV/µs vs. 100kV/µs), which must be evaluated for your specific application environment.

Q: What is the difference between HCPL-0900-000E and HCPL-0900-500E?

A: Both parts are electrically identical and use the 8-SOIC package. The difference is packaging format: HCPL-0900-000E is supplied in Tube format, while HCPL-0900-500E is supplied in Tape & Reel (TR) format. Tape & Reel packaging is optimized for automated pick-and-place assembly, while Tube packaging is suitable for manual handling and lower-volume applications. Both are ROHS3 compliant.

Q: Should I use HCPL-0900 series or HCPL-9000 series substitutes?

A: The choice depends on your PCB package requirement. HCPL-0900 series parts use the 8-SOIC (0.154", 3.90mm Width) package, which is a direct footprint match for IL 710-3B. HCPL-9000 series parts use the 8-SMD Gull Wing package, which requires a different PCB footprint. Select HCPL-0900 series if your design uses 8-SOIC footprints; select HCPL-9000 series only if your design already accommodates the Gull Wing package.

Q: Are all substitute parts RoHS compliant?

A: No. HCPL-0900-000E, HCPL-0900-500E, HCPL-9000-300E, and HCPL-9000-500E are ROHS3 compliant. HCPL-0900 and HCPL-9000-500 are RoHS non-compliant. Select compliant variants if your application or regulatory environment requires RoHS certification.

Q: What does the reduced common mode transient immunity (15kV/µs vs. 100kV/µs) mean for my application?

A: Common mode transient immunity (CMTI) specifies the maximum rate of change of common mode voltage that the isolator can tolerate without introducing errors. The IL 710-3B tolerates 100kV/µs, while Broadcom substitutes tolerate 15kV/µs. In high-noise environments with rapid voltage transients (such as motor drive circuits or high-frequency switching applications), the lower CMTI may result in signal corruption. Evaluate your circuit's actual common mode transient rates to determine if 15kV/µs is sufficient.

Q: Which substitute part has the best inventory availability?

A: HCPL-0900-000E has the highest inventory with 86,400 units in stock. This part is ROHS3 compliant, uses the 8-SOIC package, and is supplied in Tube format. It is the recommended choice for new designs requiring maximum supply chain security.

Q: Can I use HCPL-9000 series parts as a drop-in replacement for IL 710-3B?

A: HCPL-9000 series parts are not drop-in replacements because they use a different package (8-SMD Gull Wing vs. 8-SOIC). However, they are electrically compatible. Use HCPL-9000 series only if your PCB design already accommodates the Gull Wing package footprint, or if you are redesigning the PCB layout.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging supplies components in a plastic tube suitable for manual handling and lower-volume applications. Tape & Reel (TR) packaging supplies components on a continuous tape wound on a reel, optimized for automated pick-and-place assembly equipment. Select Tape & Reel for high-volume production; select Tube for prototyping, low-volume production, or manual assembly.

Q: Are there any supply chain advantages to using Broadcom substitutes over the obsolete IL 710-3B?

A: Yes. All Broadcom substitute parts have active product status, ensuring long-term availability and continued manufacturing support. The IL 710-3B is obsolete, meaning NVE Corp no longer manufactures it and existing inventory will eventually deplete. Broadcom substitutes provide design continuity and supply chain reliability for both current and future production runs.