IL 614-3 Digital Isolator Equivalent & Substitute Parts

Part Overview

The IL 614-3 is a general purpose digital isolator manufactured by NVE Corp/Isolation Products, part of the IsoLoop® series. This component provides 2500Vrms isolation across 3 channels using Giant Magnetoresistive (GMR) technology. The IL 614-3 operates at 40Mbps data rate with 15kV/µs common mode transient immunity in a 16-SOIC surface mount package.

The IL 614-3 carries an obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications currently utilizing this component.

Substiute Parts

IL 614-3

NVE Corp/Isolation ProductsIn Stock: 1205IL 614-3 Datasheet

Current PartRFQ

IL 614-3E

NVE Corp/Isolation ProductsIn Stock: 930IL 614-3E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IL 614-3 is determined by the following critical parameters that must remain constant or compatible:

Fixed Parameters (Must Match):

• Manufacturer: NVE Corp/Isolation Products
• Series: IsoLoop®
• Technology: GMR (Giant Magnetoresistive)
• Number of Channels: 3
• Channel Configuration: 2/1 unidirectional inputs
• Voltage - Isolation: 2500Vrms
• Common Mode Transient Immunity: 15kV/µs minimum
• Voltage - Supply Range: 3V ~ 5.5V
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Variable Parameters (May Differ):

• Data Rate
• Propagation Delay
• Pulse Width Distortion
• Rise / Fall Time
• Operating Temperature Range
• Product Status
• RoHS Compliance

The IL 614-3E qualifies as a direct substitute based on matching all fixed parameters while offering enhanced performance characteristics in variable parameters.

Parameter Comparison

Engineering Selection Recommendations

IL 614-3E as Primary Substitute:

The IL 614-3E is a direct functional substitute for the IL 614-3. Both components share identical core isolation specifications, channel configuration, and package form factor. The IL 614-3E maintains full electrical and mechanical compatibility while providing enhanced performance metrics.

Product Status Consideration:

The IL 614-3 carries obsolete status, indicating discontinued manufacturing and limited availability. The IL 614-3E maintains active product status with ongoing manufacturer support and established supply channels. For new designs or production continuity, the IL 614-3E is the supported component.

Compliance Status:

The IL 614-3E achieves ROHS3 compliance, whereas the IL 614-3 is non-compliant. For applications subject to RoHS regulations or customer requirements mandating RoHS compliance, the IL 614-3E satisfies these requirements.

Operating Temperature Range:

The IL 614-3 specifies -55°C to 125°C operating range. The IL 614-3E specifies -40°C to 85°C. Applications requiring operation below -40°C or above 85°C must retain the IL 614-3 or identify alternative components. Applications within the -40°C to 85°C range are fully compatible with IL 614-3E substitution.

Performance Enhancement:

The IL 614-3E provides 100Mbps data rate versus 40Mbps for the IL 614-3, with reduced propagation delay (15ns versus 25ns) and pulse width distortion (5ns versus 10ns). These improvements are backward compatible and do not create functional conflicts in applications designed for the IL 614-3.

Frequently Asked Questions (FAQ)

Q: Can IL 614-3E directly replace IL 614-3 in existing designs?

A: Yes, for applications operating within -40°C to 85°C temperature range. The IL 614-3E maintains identical isolation voltage, channel configuration, pin assignment, and package dimensions. Verify application temperature requirements before substitution.

Q: What is the primary reason to substitute IL 614-3 with IL 614-3E?

A: The IL 614-3 is obsolete with limited inventory availability. The IL 614-3E is an active product with established supply channels, ongoing manufacturer support, and ROHS3 compliance. Substitution ensures design continuity and regulatory compliance.

Q: Are there pin-to-pin compatibility differences between IL 614-3 and IL 614-3E?

A: No. Both components use identical 16-SOIC package configuration with matching pin assignments. PCB layout and schematic connections require no modification.

Q: Does IL 614-3E performance improvement affect circuit design?

A: No. The IL 614-3E provides enhanced data rate, reduced propagation delay, and lower pulse width distortion. These improvements are backward compatible and do not require circuit redesign. Existing designs function identically or with improved performance margins.

Q: What temperature applications require IL 614-3 retention?

A: Applications requiring operation below -40°C or above 85°C must use IL 614-3 or identify alternative components. The IL 614-3 supports -55°C to 125°C range. Verify application temperature extremes before substitution.

Q: Is RoHS compliance a substitution factor?

A: Yes, for regulated applications. IL 614-3E achieves ROHS3 compliance while IL 614-3 is non-compliant. Applications subject to RoHS regulations or customer requirements must use IL 614-3E.

Q: What inventory status should influence substitution decisions?

A: IL 614-3 shows 1118 pieces in stock (obsolete status). IL 614-3E shows 900 pieces in stock (active status). For long-term production, IL 614-3E provides supply chain reliability. Verify supplier inventory before finalizing component selection.

Q: Are isolation voltage and CMTI specifications identical?

A: Yes. Both IL 614-3 and IL 614-3E provide 2500Vrms isolation and 15kV/µs common mode transient immunity. These critical safety and performance parameters are unchanged.