IL 485E-3V RS422/RS485 Digital Isolator Equivalent & Substitute Parts

Part Overview

The IL 485E-3V is a RS422/RS485 digital isolator manufactured by NVE Corp/Isolation Products, part of the IsoLoop® series. This component provides galvanic isolation for serial communication interfaces with 2500Vrms isolation voltage and 3-channel configuration. The IL 485E-3V is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure long-term supply chain reliability for new production and field replacements.

Substiute Parts

IL 485E-3V

NVE Corp/Isolation ProductsIn Stock: 792IL 485E-3V Datasheet

Current PartRFQ

IL 485E

NVE Corp/Isolation ProductsIn Stock: 10308IL 485E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IL 485E-3V is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Parameters:

• RS422/RS485 interface type
• 3-channel configuration with 2/1 input distribution
• Unidirectional channel type
• 2500Vrms isolation voltage
• 20kV/µs Common Mode Transient Immunity
• 35Mbps data rate
• 32ns maximum propagation delay (both directions)
• 8ns typical rise/fall time
• Supply voltage range: 3V ~ 5.5V and 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 100°C

Mechanical Compatibility Parameters:

• 16-SOIC package (0.295", 7.50mm Width)
• Surface mount mounting type

Technology & Series:

• GMR (Giant Magnetoresistive) technology
• IsoLoop® series designation

The IL 485E serves as the direct substitute for the IL 485E-3V, maintaining identical electrical and mechanical specifications while offering improved product status and compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The IL 485E is the direct equivalent substitute for the IL 485E-3V. Both components share identical electrical performance specifications, mechanical packaging, and functional characteristics across all critical parameters.

Product Status Consideration: The IL 485E-3V is classified as obsolete, while the IL 485E maintains active product status. For new designs and ongoing production, the IL 485E is the appropriate selection to ensure continued component availability and supply chain stability.

Compliance Advantages: The IL 485E substitute offers improved regulatory compliance compared to the obsolete IL 485E-3V:

• ROHS3 Compliant (versus RoHS non-compliant)
• Moisture Sensitivity Level 1 with unlimited shelf life (versus MSL 2 with 1-year limitation)

These improvements provide enhanced handling flexibility and regulatory alignment for modern manufacturing environments without compromising electrical or mechanical performance.

Functional Equivalence: All electrical parameters remain unchanged, including isolation voltage, data rate, propagation delay, and supply voltage ranges. Pin-to-pin compatibility and package dimensions are identical, enabling direct substitution in existing PCB designs without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the IL 485E directly replace the IL 485E-3V in existing designs?

A: Yes. The IL 485E is electrically and mechanically identical to the IL 485E-3V. All functional parameters, including isolation voltage (2500Vrms), data rate (35Mbps), propagation delay (32ns), and package dimensions (16-SOIC, 0.295" × 7.50mm) are equivalent. Direct substitution requires no circuit modifications or PCB redesign.

Q: What is the primary reason for substituting the IL 485E-3V?

A: The IL 485E-3V is classified as obsolete, creating supply chain risk for new production and field replacements. The IL 485E maintains active product status with identical specifications, ensuring long-term availability and manufacturing continuity.

Q: Are there compliance differences between the two parts?

A: Yes. The IL 485E offers improved compliance characteristics: ROHS3 Compliant (versus RoHS non-compliant) and Moisture Sensitivity Level 1 with unlimited shelf life (versus MSL 2 with 1-year limitation). These improvements align with modern regulatory requirements and provide enhanced handling flexibility.

Q: Do the supply voltage ranges differ between IL 485E-3V and IL 485E?

A: No. Both parts support identical supply voltage ranges: 3V ~ 5.5V and 4.5V ~ 5.5V. Operating temperature range is also identical: -40°C ~ 100°C.

Q: Is the 16-SOIC package identical for both parts?

A: Yes. Both the IL 485E-3V and IL 485E use the same 16-SOIC package with 0.295" width and 7.50mm body width. Surface mount mounting type is identical, enabling direct PCB placement without modification.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution is based on identical specifications across: RS422/RS485 interface type, 3-channel configuration (2/1 input distribution), unidirectional channel type, 2500Vrms isolation voltage, 20kV/µs Common Mode Transient Immunity, 35Mbps data rate, 32ns propagation delay, and 8ns rise/fall time. All parameters match between IL 485E-3V and IL 485E.

Q: Are there inventory considerations for the IL 485E?

A: The IL 485E is available in active production with significantly higher inventory levels (10,201 pieces) compared to the obsolete IL 485E-3V (707 pieces). The active status and higher availability make the IL 485E the preferred selection for new designs and ongoing production requirements.