IL 715T Digital Isolator - Equivalent & Substitute Parts

Part Overview

The IL 715T is a general purpose digital isolator manufactured by NVE Corp/Isolation Products, part of the IsoLoop® series. This component provides galvanic isolation for digital signals using Giant Magnetoresistive (GMR) technology. The IL 715T features 4 channels of unidirectional isolation with a 2500Vrms isolation voltage rating, 110Mbps data rate, and 100kV/µs common mode transient immunity. The device is housed in a 16-SOIC surface mount package and operates across the -40°C to 125°C temperature range with supply voltages from 3V to 5.5V.

The IL 715T is classified as an active product with current inventory availability. Equivalent substitute parts may be required due to supply constraints, design optimization, or compliance requirements in specific applications.

Substiute Parts

IL 715T

NVE Corp/Isolation ProductsIn Stock: 1075IL 715T Datasheet

Current PartRFQ

IL 815TE

NVE Corp/Isolation ProductsIn Stock: 796IL 815TE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IL 715T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Number of Channels: 4
• Channel Configuration: Unidirectional (4 inputs / 0 outputs)
• Voltage - Isolation: 2500Vrms
• Data Rate: 110Mbps
• Package / Case: 16-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount
• Voltage - Supply: 3V ~ 5.5V
• Operating Temperature: -40°C ~ 125°C

Allowable Parameter Variation:

• Common Mode Transient Immunity (Min): May be lower than 100kV/µs
• Propagation Delay, Pulse Width Distortion, and Rise/Fall Time: May vary within acceptable engineering tolerances
• RoHS Compliance Status: May differ
• Packaging Format: May differ (e.g., Tube vs. standard packaging)

The IL 815TE qualifies as a parametric equivalent substitute based on these criteria. The primary difference is the reduced Common Mode Transient Immunity specification (30kV/µs versus 100kV/µs) and improved RoHS3 compliance status.

Parameter Comparison

Engineering Selection Recommendations

IL 715T Selection Criteria:

• Applications requiring 100kV/µs common mode transient immunity
• Designs where RoHS non-compliance is acceptable or not a constraint
• Existing inventory availability (983 pcs in stock)

IL 815TE Selection Criteria:

• Applications where ROHS3 compliance is mandatory
• Designs where 30kV/µs common mode transient immunity meets functional requirements
• Supply chain optimization with alternative inventory (747 pcs in stock)
• New designs prioritizing regulatory compliance

Both parts maintain identical electrical performance across data rate, propagation delay, pulse width distortion, rise/fall time, isolation voltage, supply voltage range, and operating temperature specifications. The primary engineering consideration is the common mode transient immunity specification and regulatory compliance status. Selection between these parts should be based on application-specific immunity requirements and compliance mandates rather than functional performance differences.

Frequently Asked Questions (FAQ)

Q: Can IL 815TE be used as a direct replacement for IL 715T in existing designs?

A: IL 815TE is functionally compatible with IL 715T for applications where 30kV/µs common mode transient immunity is sufficient. Both parts share identical channel count, isolation voltage, data rate, propagation delay, and package specifications. The primary difference is the reduced CMTI specification and improved RoHS3 compliance status of the IL 815TE. Design review is required to confirm that the lower CMTI rating does not impact system performance.

Q: What is the significance of the Common Mode Transient Immunity difference?

A: Common Mode Transient Immunity (CMTI) specifies the maximum rate of change of common mode voltage that the isolator can withstand without introducing errors. The IL 715T supports 100kV/µs while the IL 815TE supports 30kV/µs. Applications with high-speed switching circuits, motor drives, or high-voltage transient environments may require the higher CMTI rating of the IL 715T.

Q: Are the packages physically identical?

A: Yes. Both IL 715T and IL 815TE use the 16-SOIC (0.295", 7.50mm Width) surface mount package. PCB layout and footprints are identical, allowing direct physical substitution without board redesign.

Q: What is the difference between RoHS non-compliant and ROHS3 compliant status?

A: RoHS non-compliant indicates the IL 715T may contain restricted substances such as lead or cadmium. ROHS3 compliant indicates the IL 815TE meets the Restriction of Hazardous Substances Directive 3 requirements and contains no restricted substances. ROHS3 compliance is mandatory for products sold in the European Union and increasingly required by OEMs globally.

Q: Are the electrical timing characteristics identical?

A: Yes. Both parts specify identical propagation delay (15ns maximum for both tpLH and tpHL), pulse width distortion (3ns maximum), and rise/fall time (1ns typical). Timing-critical applications can use either part without timing margin recalculation.

Q: What supply voltage range do both parts support?

A: Both IL 715T and IL 815TE operate with supply voltages from 3V to 5.5V, supporting both 3.3V and 5V logic systems without additional regulation.

Q: Is the data rate specification identical?

A: Yes. Both parts support 110Mbps data rate and are suitable for identical bandwidth applications.