IL 711S-1E General Purpose Digital Isolator Equivalent & Substitute Parts

Part Overview

The IL 711S-1E is a general purpose digital isolator manufactured by NVE Corp/Isolation Products, part of the IsoLoop® series. This component provides galvanic isolation using Giant Magnetoresistive (GMR) technology with 1000Vrms isolation voltage across 2 channels, supporting unidirectional data transmission at 150Mbps with 100kV/µs common mode transient immunity. The IL 711S-1E is discontinued at DiGi Electronics, necessitating identification of functionally equivalent substitute components for ongoing design support and procurement.

Substiute Parts

IL 711S-1E

NVE Corp/Isolation ProductsIn Stock: 990IL 711S-1E Datasheet

Current PartRFQ

HCPL-9030-300E

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

SimilarRFQ

HCPL-9030-500E

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IL 711S-1E are identified based on the following critical parameters that define functional equivalence:

Primary Matching Criteria:

• General Purpose digital isolator classification
• 2-channel unidirectional configuration (2 inputs / 0 outputs)
• GMR technology platform
• Surface mount packaging (8-pin variants)
• Supply voltage range: 3V ~ 5.5V
• Propagation delay: 15ns maximum (tpLH / tpHL)
• Pulse width distortion: 3ns maximum
• Rise/fall time: 1ns typical
• RoHS3 compliance and MSL 1 rating

Secondary Considerations:

• Isolation voltage rating (IL 711S-1E: 1000Vrms minimum)
• Common mode transient immunity (IL 711S-1E: 100kV/µs minimum)
• Data rate capability (IL 711S-1E: 150Mbps minimum)
• Operating temperature range
• Product status and availability

The substitute parts identified (HCPL-9030-300E and HCPL-9030-500E) meet or exceed the primary matching criteria. Both are Broadcom Limited general purpose digital isolators with 2-channel unidirectional architecture, GMR technology, and compatible electrical specifications. These parts provide enhanced isolation voltage (2500Vrms) and superior common mode transient immunity (15kV/µs) compared to the IL 711S-1E, making them suitable for applications requiring equivalent or higher performance levels.

Parameter Comparison

Engineering Selection Recommendations

HCPL-9030-300E and HCPL-9030-500E Selection Basis:

Both Broadcom HCPL-9030 variants are active products with confirmed availability, addressing the discontinuation status of the IL 711S-1E. The primary distinction between these two substitute options is packaging format:

HCPL-9030-300E is supplied in Tube packaging, suitable for lower-volume procurement and manual assembly operations.

HCPL-9030-500E is supplied in Tape & Reel (TR) format, optimized for high-volume automated assembly processes.

Both parts maintain full RoHS3 compliance and REACH unaffected status, consistent with the original IL 711S-1E specifications. The substitute parts exceed the isolation voltage requirement (2500Vrms vs. 1000Vrms) and provide enhanced common mode transient immunity (15kV/µs vs. 100kV/µs), delivering superior performance margins for isolation-critical applications.

The operating temperature range of the HCPL-9030 series (-55°C ~ 125°C) extends beyond the IL 711S-1E specification (-40°C ~ 100°C), providing broader environmental compatibility. Propagation delay, pulse width distortion, and rise/fall time specifications are identical across all three parts, ensuring timing-critical signal integrity is maintained.

Package geometry differences (8-MSOP vs. 8-SMD Gull Wing) require PCB layout verification to confirm mechanical compatibility with existing designs. Both packages are standard 8-pin surface mount configurations with equivalent pin pitch and electrical connectivity.

Frequently Asked Questions (FAQ)

Q: Can HCPL-9030-300E or HCPL-9030-500E directly replace IL 711S-1E in existing designs?

A: Electrical substitution is valid based on matching channel configuration, propagation delay, pulse width distortion, and rise/fall time specifications. However, PCB layout verification is required due to package geometry differences between 8-MSOP and 8-SMD Gull Wing formats. Pin assignments must be confirmed against schematic documentation.

Q: What is the difference between HCPL-9030-300E and HCPL-9030-500E?

A: Both parts are electrically identical. The difference is packaging format: HCPL-9030-300E is supplied in Tube packaging for lower-volume applications, while HCPL-9030-500E is supplied in Tape & Reel format for high-volume automated assembly. Select based on procurement volume and assembly process requirements.

Q: Are the substitute parts more capable than the IL 711S-1E?

A: Yes. The HCPL-9030 series provides 2500Vrms isolation voltage (vs. 1000Vrms) and 15kV/µs common mode transient immunity (vs. 100kV/µs). These enhanced specifications deliver superior performance margins for isolation-critical applications. Core timing parameters (propagation delay, pulse width distortion, rise/fall time) remain equivalent.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both HCPL-9030-300E and HCPL-9030-500E are RoHS3 compliant with MSL 1 (Unlimited) rating and REACH unaffected status, matching the IL 711S-1E compliance profile.

Q: What is the operating temperature range difference?

A: IL 711S-1E operates from -40°C to 100°C. HCPL-9030 variants operate from -55°C to 125°C. The extended range of the substitute parts provides broader environmental compatibility for applications requiring lower or higher temperature operation.

Q: Are there any data rate differences?

A: IL 711S-1E supports 150Mbps, while HCPL-9030 variants support 110MBd. For applications requiring data rates above 110MBd, the IL 711S-1E specification cannot be matched by these substitutes. Verify application data rate requirements before selection.

Q: What packaging considerations apply to PCB redesign?

A: IL 711S-1E uses 8-TSSOP/8-MSOP (0.118", 3.00mm width) packaging. HCPL-9030 variants use 8-SMD Gull Wing packaging. Both are 8-pin surface mount formats with standard pitch, but footprint geometry differs. PCB layout modifications are required; consult package datasheets for exact pin placement and trace routing specifications.