IL 711-2B Digital Isolator Equivalent & Substitute Parts

Part Overview

The IL 711-2B is a general purpose digital isolator manufactured by NVE Corp/Isolation Products, part of the IsoLoop® series. This component provides 2500Vrms isolation across 2 channels with 110Mbps data rate and 100kV/µs common mode transient immunity. The device is housed in an 8-DIP through-hole package and operates across the -55°C to 125°C temperature range.

The IL 711-2B carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Active alternatives with compatible electrical and mechanical specifications are available from Broadcom Limited.

Substiute Parts

IL 711-2B

NVE Corp/Isolation ProductsIn Stock: 1034IL 711-2B Datasheet

Current PartRFQ

HCPL-9030-000E

Broadcom LimitedIn Stock: 1535HCPL-9030-000E Datasheet

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HCPL-9030-300E

Broadcom LimitedIn Stock: 742HCPL-9030-300E Datasheet

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HCPL-9030-500E

Broadcom LimitedIn Stock: 939HCPL-9030-500E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IL 711-2B is determined by the following core parameters:

Mandatory Matching Parameters:

• Voltage - Isolation: 2500Vrms
• Number of Channels: 2
• Channel Type: Unidirectional
• Data Rate: 110Mbps / 110MBd
• Propagation Delay tpLH / tpHL (Max): 15ns / 15ns
• Pulse Width Distortion (Max): 3ns
• Rise / Fall Time (Typ): 1ns / 1ns
• Voltage - Supply: 3V ~ 5.5V
• Operating Temperature: -55°C ~ 125°C
• Technology: GMR (Giant Magnetoresistive)

Allowable Variations:

• Common Mode Transient Immunity: The IL 711-2B specifies 100kV/µs minimum, while Broadcom HCPL-9030 variants specify 15kV/µs minimum. The Broadcom parts meet the functional requirement with lower CMTI specification.
• Mounting Type and Package: Substitutes may differ in mounting technology (through-hole versus surface mount) and package form factor, provided the electrical specifications remain compatible.

Substitute Parts Identified:

1. HCPL-9030-000E (Broadcom Limited): 8-DIP through-hole package, tube packaging, active product status
2. HCPL-9030-300E (Broadcom Limited): 8-SMD surface mount package, tube packaging, active product status
3. HCPL-9030-500E (Broadcom Limited): 8-SMD surface mount package, tape & reel packaging, active product status

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole PCB Designs:

HCPL-9030-000E is the direct functional equivalent for through-hole applications. This part maintains the 8-DIP package form factor identical to the IL 711-2B, enabling direct socket replacement without PCB redesign. The HCPL-9030-000E carries active product status and ROHS3 compliance, providing long-term supply chain stability and regulatory alignment superior to the obsolete IL 711-2B.

For Surface Mount PCB Designs:

HCPL-9030-300E and HCPL-9030-500E provide equivalent electrical performance in 8-SMD surface mount packages. Selection between these two variants depends on procurement and assembly requirements:

• HCPL-9030-300E: Tube packaging, suitable for lower-volume production and manual assembly workflows
• HCPL-9030-500E: Tape & reel packaging, optimized for high-volume automated assembly processes

Both surface mount variants require PCB layout modification from the original through-hole design but deliver identical electrical characteristics and active product status.

Regulatory and Compliance Considerations:

All Broadcom HCPL-9030 variants achieve ROHS3 compliance, addressing regulatory requirements that the non-compliant IL 711-2B does not satisfy. For applications subject to RoHS directives or customer compliance mandates, the Broadcom alternatives are required.

Frequently Asked Questions (FAQ)

Q: Can HCPL-9030-000E replace IL 711-2B in existing designs without modification?

A: Yes, for through-hole PCB designs. The HCPL-9030-000E maintains identical 8-DIP package dimensions (0.300", 7.62mm) and pin configuration, enabling direct socket replacement. No PCB redesign is required. Electrical specifications remain compatible across all critical parameters.

Q: What is the significance of the lower Common Mode Transient Immunity (15kV/µs vs. 100kV/µs)?

A: The IL 711-2B specifies 100kV/µs CMTI, while Broadcom HCPL-9030 variants specify 15kV/µs. Both values exceed typical industrial noise environments. The lower specification in the Broadcom parts remains adequate for general purpose digital isolation applications. Applications requiring the higher 100kV/µs specification should retain the IL 711-2B or consult alternative suppliers.

Q: Are surface mount variants (HCPL-9030-300E and HCPL-9030-500E) electrically identical?

A: Yes. Both surface mount variants are electrically identical. They differ only in packaging format (tube versus tape & reel) and mounting technology (surface mount versus through-hole). Electrical performance, data rate, isolation voltage, and timing specifications are equivalent.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging (HCPL-9030-300E) is suitable for lower-volume production, manual assembly, and prototyping workflows. Tape & reel packaging (HCPL-9030-500E) is optimized for high-volume automated pick-and-place assembly. Both deliver identical components; packaging selection depends on production volume and assembly methodology.

Q: Does the IL 711-2B obsolescence affect long-term availability?

A: Yes. The IL 711-2B is classified as obsolete, indicating NVE Corp has discontinued production. Existing inventory (956 pcs reported) will eventually deplete. Broadcom HCPL-9030 variants carry active product status, ensuring continued manufacturing and supply chain availability for future production runs and field replacements.

Q: Are there any thermal or environmental differences between the IL 711-2B and HCPL-9030 variants?

A: No. All parts operate across the identical -55°C to 125°C temperature range. Moisture sensitivity level (MSL 1 - Unlimited) is equivalent. Both technologies employ GMR (Giant Magnetoresistive) isolation, delivering comparable thermal performance and environmental robustness.

Q: Can I use HCPL-9030 variants in designs originally specified for IL 711-2B?

A: Electrical substitution is valid for all three HCPL-9030 variants. Package selection depends on PCB design: HCPL-9030-000E for through-hole designs (no PCB modification required), or HCPL-9030-300E / HCPL-9030-500E for surface mount designs (PCB redesign required). Verify supply voltage compatibility (both support 3V ~ 5.5V) and confirm that the lower CMTI specification (15kV/µs) is acceptable for your application environment.