IL 614 Digital Isolator Equivalent & Substitute Parts

Part Overview

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

The IL 614 is classified as obsolete. Identifying equivalent and substitute parts is necessary to support legacy system maintenance, design updates, and procurement continuity where original components are no longer in active production.

Substiute Parts

IL 614

NVE Corp/Isolation ProductsIn Stock: 904IL 614 Datasheet

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IL 614E

NVE Corp/Isolation ProductsIn Stock: 814IL 614E Datasheet

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ACSL-6310-00TE

Broadcom LimitedIn Stock: 69369ACSL-6310-00TE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IL 614 is determined by the following critical parameters:

Primary Matching Criteria:

• Isolation voltage rating: 2500Vrms minimum
• Number of channels: 3 channels
• Channel configuration: 2 inputs on Side 1, 1 output on Side 2
• Package type: 16-SOIC surface mount
• Supply voltage compatibility: 3V to 5.5V operation

Secondary Compatibility Factors:

• Common mode transient immunity: 10kV/µs or higher
• Data rate: 15Mbps or higher
• Propagation delay and rise/fall time characteristics
• Operating temperature range overlap

The IL 614E qualifies as a direct substitute within the same IsoLoop® series, maintaining identical isolation voltage, channel count, and package specifications while offering enhanced performance metrics and active product status.

The ACSL-6310-00TE qualifies as a functional substitute based on matching isolation voltage, channel count, package type, and supply voltage range. However, this component utilizes optoisolator technology rather than GMR technology, resulting in different electrical characteristics including lower data rate and longer propagation delays.

Parameter Comparison

Engineering Selection Recommendations

IL 614E Selection Criteria:

The IL 614E is the preferred substitute for IL 614 applications. Both components share identical isolation voltage (2500Vrms), channel configuration (3 channels, 2/1 input/output), and package dimensions (16-SOIC, 0.295" width). The IL 614E offers superior performance with 100Mbps data rate versus 40Mbps, reduced propagation delay (15ns versus 25ns), and improved pulse width distortion (5ns versus 10ns).

The IL 614E is classified as active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. The operating temperature range of -40°C to 85°C is narrower than the IL 614 (-55°C to 125°C); verification of application temperature requirements is necessary before selection.

ACSL-6310-00TE Selection Criteria:

The ACSL-6310-00TE qualifies as a functional substitute where isolation voltage, channel count, and supply voltage compatibility are primary requirements. This optoisolator-based component maintains 2500Vrms isolation and 3-channel configuration in a 16-SOIC package.

The ACSL-6310-00TE exhibits significantly different electrical characteristics: 15MBd data rate (lower than IL 614), 100ns propagation delay (four times longer than IL 614), and 30ns/12ns rise/fall times (versus 2ns/2ns for IL 614). The 10kV/µs CMTI is lower than the IL 614's 15kV/µs specification.

Selection of ACSL-6310-00TE is appropriate only for applications where lower data rates and longer propagation delays are acceptable. The component is active product status with ROHS3 compliance and operates across -40°C to 100°C.

Package Dimension Note:

The ACSL-6310-00TE package width is 0.154" (3.90mm) versus 0.295" (7.50mm) for IL 614 and IL 614E. PCB layout verification is required to confirm physical compatibility.

Frequently Asked Questions (FAQ)

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

A: IL 614E is a direct pin-compatible substitute with identical isolation voltage, channel count, and 16-SOIC package dimensions. The primary consideration is the narrower operating temperature range (-40°C to 85°C versus -55°C to 125°C). If the application operates within -40°C to 85°C, IL 614E is a direct replacement. Applications requiring -55°C operation or below require alternative solutions.

Q: What are the key differences between IL 614E and ACSL-6310-00TE?

A: IL 614E uses GMR technology with 40Mbps to 100Mbps data rates and 15ns propagation delay. ACSL-6310-00TE uses optoisolator technology with 15MBd data rate and 100ns propagation delay. IL 614E maintains 15kV/µs CMTI; ACSL-6310-00TE provides 10kV/µs CMTI. Both share 2500Vrms isolation and 3-channel configuration. Selection depends on timing-critical application requirements.

Q: Is the ACSL-6310-00TE package physically compatible with IL 614 PCB layouts?

A: No. The ACSL-6310-00TE package width is 0.154" (3.90mm) compared to 0.295" (7.50mm) for IL 614 and IL 614E. PCB footprint redesign is required. Pin configuration remains compatible within the 16-SOIC family.

Q: What is the significance of RoHS compliance for substitute selection?

A: IL 614 is RoHS non-compliant. Both IL 614E and ACSL-6310-00TE are ROHS3 compliant. For new designs or systems requiring regulatory compliance, ROHS3-compliant substitutes are necessary. For legacy system maintenance where original non-compliant components were used, either substitute is acceptable from a compliance perspective.

Q: Are there any supply voltage or thermal considerations when switching from IL 614 to IL 614E?

A: Supply voltage range is identical (3V to 5.5V) for both components. Operating temperature range differs: IL 614 operates -55°C to 125°C; IL 614E operates -40°C to 85°C. Applications requiring operation below -40°C or above 85°C cannot use IL 614E. Thermal management and ambient temperature specifications must be reviewed before substitution.

Q: What does the 15kV/µs CMTI specification mean for substitution?

A: Common Mode Transient Immunity (CMTI) indicates the maximum rate of voltage change the isolator can tolerate on the isolated side without causing errors. IL 614 and IL 614E both specify 15kV/µs; ACSL-6310-00TE specifies 10kV/µs. Applications with high-speed switching or fast transient environments may require the higher CMTI rating of IL 614 or IL 614E.

Q: Can IL 614 be used in new designs?

A: IL 614 is classified as obsolete. New designs should not use obsolete components. IL 614E (active status) is the recommended choice for new applications requiring GMR-based isolation. ACSL-6310-00TE is an alternative for applications where optoisolator technology is acceptable.