IL 715-3ETR7 Digital Isolator: Equivalent & Substitute Parts

Part Overview

The IL 715-3ETR7 is a general purpose digital isolator manufactured by NVE Corp/Isolation Products. This 4-channel, 2500Vrms rated device operates at 110Mbps with GMR (Giant Magnetoresistive) technology and is housed in a 16-SOIC package. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required for design flexibility, inventory management, or supply chain continuity.

Substiute Parts

IL 715-3ETR7

NVE Corp/Isolation ProductsIn Stock: 756IL 715-3ETR7 Datasheet

Current PartRFQ

HCPL-900J

Broadcom LimitedIn Stock: 90504HCPL-900J Datasheet

SimilarRFQ

HCPL-900J-000E

Broadcom LimitedIn Stock: 80369HCPL-900J-000E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IL 715-3ETR7 are qualified based on the following electrical and mechanical parameters:

Core Compatibility Criteria:

• Isolation voltage rating of 2500Vrms
• 4-channel configuration with unidirectional input topology (4/0)
• Data rate of 110Mbps or equivalent
• Propagation delay specifications of 15ns maximum (tpLH and tpHL)
• Pulse width distortion of 3ns maximum
• Supply voltage range of 3V to 5.5V
• Surface mount 16-SOIC package format
• GMR technology platform
• MSL 1 moisture sensitivity rating

The identified substitutes (HCPL-900J and HCPL-900J-000E) meet all core electrical parameters. Package dimensions differ (0.154" vs. 0.295" width), which may require PCB layout evaluation. CMTI specification varies between parts (100kV/µs vs. 15kV/µs), representing a functional difference that must be assessed for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

IL 715-3ETR7 (Primary Part):

• RoHS3 compliant
• Active production status
• Narrower package footprint (0.154" width)
• Higher CMTI specification (100kV/µs)
• Operating temperature range: -40°C to 100°C

HCPL-900J-000E (Preferred Substitute):

• RoHS3 compliant
• Active production status
• Tube packaging available
• Extended operating temperature range (-55°C to 125°C)
• Wider package footprint (0.295" width) requires PCB layout verification
• Lower CMTI specification (15kV/µs)

HCPL-900J (Alternative Substitute):

• RoHS non-compliant
• Active production status
• Extended operating temperature range (-55°C to 125°C)
• Wider package footprint (0.295" width) requires PCB layout verification
• Lower CMTI specification (15kV/µs)

Selection between IL 715-3ETR7 and HCPL-900J-000E depends on regulatory compliance requirements, thermal operating conditions, and PCB layout constraints. The HCPL-900J-000E maintains RoHS3 compliance and offers extended temperature operation. The IL 715-3ETR7 provides superior CMTI performance and compact packaging.

Frequently Asked Questions (FAQ)

Q: Can HCPL-900J or HCPL-900J-000E be used as direct replacements for IL 715-3ETR7?

A: Both Broadcom parts meet the core electrical specifications: 2500Vrms isolation, 4-channel unidirectional configuration, 110Mbps data rate, 15ns propagation delay, and 3ns pulse width distortion. However, package dimensions differ (0.154" vs. 0.295" width), requiring PCB layout evaluation. The CMTI specification is lower (15kV/µs vs. 100kV/µs), which must be assessed for application requirements.

Q: What is the significance of the CMTI difference between IL 715-3ETR7 and the Broadcom substitutes?

A: CMTI (Common Mode Transient Immunity) specifies the maximum rate of change of common-mode voltage that the isolator can withstand without introducing errors. The IL 715-3ETR7 supports 100kV/µs, while HCPL-900J and HCPL-900J-000E support 15kV/µs. Applications with high-speed switching or high dV/dt environments may require the higher CMTI rating of the IL 715-3ETR7.

Q: Are there packaging differences that affect PCB design?

A: Yes. The IL 715-3ETR7 uses a narrower 16-SOIC package (0.154" width, 3.90mm), while both Broadcom substitutes use a wider 16-SOIC package (0.295" width, 7.50mm). This dimensional difference requires verification of PCB footprint compatibility and may necessitate layout modifications.

Q: Which substitute part is recommended for new designs?

A: HCPL-900J-000E is recommended for new designs due to RoHS3 compliance, extended operating temperature range (-55°C to 125°C), and active production status. The IL 715-3ETR7 remains suitable for applications requiring superior CMTI performance and compact packaging.

Q: What is the difference between HCPL-900J and HCPL-900J-000E?

A: Both parts are electrically identical with identical electrical specifications. The primary difference is packaging: HCPL-900J-000E is supplied in Tube packaging, while HCPL-900J packaging is not specified. Additionally, HCPL-900J-000E is RoHS3 compliant, while HCPL-900J is RoHS non-compliant.

Q: Are all three parts suitable for high-temperature applications?

A: The IL 715-3ETR7 operates from -40°C to 100°C. Both Broadcom substitutes (HCPL-900J and HCPL-900J-000E) operate from -55°C to 125°C, providing extended temperature capability. For applications requiring operation above 100°C, the Broadcom parts are required.

Q: What compliance certifications should be considered when selecting between these parts?

A: The IL 715-3ETR7 and HCPL-900J-000E are both RoHS3 compliant. The HCPL-900J is RoHS non-compliant. All three parts are REACH unaffected. For applications subject to RoHS regulations, IL 715-3ETR7 or HCPL-900J-000E must be selected.