ISO3086DW Equivalent & Substitute Parts

Part Overview

The ISO3086DW is a 2/2 transceiver with isolated full RS422/RS485 capability in a 16-SOIC surface mount package, manufactured by Texas Instruments. This component is designated as Last Time Buy, indicating discontinued production with limited remaining inventory (1797 pcs). The need for equivalent and substitute parts arises from inventory constraints and the requirement to identify functionally compatible alternatives for ongoing design requirements and production planning.

Substiute Parts

ISO3086DW

Texas InstrumentsIn Stock: 1875ISO3086DW Datasheet

Current PartRFQ

ISO3086DWR

Texas InstrumentsIn Stock: 21295ISO3086DWR Datasheet

MFR RecommendedRFQ

ISO3086TDW

Texas InstrumentsIn Stock: 1135ISO3086TDW Datasheet

Parametric EquivalentRFQ

MAX14948EWE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 27967MAX14948EWE+T Datasheet

MFR RecommendedRFQ

MAX14949EWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1268MAX14949EWE+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ISO3086DW is determined by the following critical parameters:

Electrical Compatibility:

• Protocol support: RS422 and RS485
• Driver/Receiver configuration: 2/2 (two drivers, two receivers)
• Duplex mode: Full duplex operation
• Data rate capability: minimum 20 Mbps
• Supply voltage range: compatible with 3.15V ~ 5.5V or 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C

Mechanical Compatibility:

• Package type: 16-SOIC (0.295", 7.50mm Width)
• Mounting type: Surface Mount
• Pin count and footprint: identical to original

Regulatory Compliance:

• RoHS3 compliance required
• REACH unaffected status

Substitute parts are grouped into two categories:

Category 1 - Direct Parametric Equivalents (Texas Instruments ISO3086 Series): ISO3086DWR and ISO3086TDW maintain identical electrical specifications, protocol support, and package configuration. These parts differ only in packaging format (Cut Tape/Digi-Reel vs. Tube) and product status (Active vs. Last Time Buy).

Category 2 - Functional Alternatives (Analog Devices MAX14948/MAX14949 Series): MAX14948EWE+T and MAX14949EWE+ provide RS422/RS485 isolation capability with enhanced specifications (5000Vrms isolation, 500kbps data rate, 3-channel configuration). These parts operate within compatible supply voltage and temperature ranges but differ in isolation technology (capacitive coupling vs. transformer-based) and channel architecture.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

ISO3086DWR is the primary recommended substitute. It maintains all electrical specifications of the ISO3086DW while offering Active product status and significantly higher inventory availability (21200 pcs). The only difference is packaging format (Cut Tape/Digi-Reel vs. Tube), which does not affect electrical or mechanical compatibility. This part is suitable for immediate production use without design modification.

ISO3086TDW provides parametric equivalence but retains Last Time Buy status with lower inventory (1111 pcs), making it less suitable for long-term production planning despite identical electrical characteristics.

For Applications Requiring Enhanced Isolation:

MAX14948EWE+T and MAX14949EWE+ offer superior isolation voltage (5000Vrms) and improved moisture sensitivity (MSL 1 vs. MSL 2). However, these parts operate at reduced data rates (500 kbps vs. 20 Mbps) and feature unidirectional channel architecture (2/1 configuration) rather than full duplex 2/2 operation. Selection of these alternatives requires verification that application data rates do not exceed 500 kbps and that unidirectional communication topology is acceptable.

MAX14948EWE+T (Tape & Reel packaging) provides the highest inventory availability (27925 pcs) among all alternatives and Active product status, supporting sustained production requirements.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original ISO3086DW specification.

Frequently Asked Questions (FAQ)

Q: Can ISO3086DWR be used as a direct drop-in replacement for ISO3086DW?

A: Yes. ISO3086DWR is electrically and mechanically identical to ISO3086DW. The only difference is packaging format (Cut Tape/Digi-Reel vs. Tube). Both parts share identical pin configuration, electrical specifications, and performance characteristics. No design modification is required.

Q: What is the primary advantage of ISO3086DWR over ISO3086DW?

A: ISO3086DWR has Active product status with 21200 pcs in stock, compared to ISO3086DW's Last Time Buy status with 1797 pcs. This ensures long-term availability for production and design continuity.

Q: Can MAX14948EWE+T or MAX14949EWE+ replace ISO3086DW in all applications?

A: Not universally. While both parts support RS422/RS485 protocols and operate within compatible temperature and supply voltage ranges, they differ in critical specifications. The MAX14948/MAX14949 series operates at 500 kbps maximum data rate (vs. 20 Mbps for ISO3086DW) and features unidirectional channel architecture (2/1 configuration) rather than full duplex 2/2 operation. Substitution is valid only for applications where data rates do not exceed 500 kbps and unidirectional communication is acceptable.

Q: What is the difference between ISO3086TDW and ISO3086DWR?

A: Both are parametric equivalents to ISO3086DW with identical electrical specifications. ISO3086TDW uses Tube packaging (matching ISO3086DW), while ISO3086DWR uses Cut Tape/Digi-Reel packaging. ISO3086DWR has Active status with higher inventory (21200 pcs), while ISO3086TDW retains Last Time Buy status with lower inventory (1111 pcs).

Q: Are there any supply voltage compatibility concerns when substituting parts?

A: All substitute parts operate within overlapping supply voltage ranges. ISO3086DW, ISO3086DWR, and ISO3086TDW support 3.15V ~ 5.5V and 4.5V ~ 5.5V. MAX14949EWE+ supports 3V ~ 5.5V and 4.5V ~ 5.5V. MAX14948EWE+T supports the widest range (1.71V ~ 5.5V and 4.5V ~ 5.5V). Verify your application's specific supply voltage requirement against the selected substitute part's specification.

Q: Do all substitute parts meet the same moisture sensitivity requirements?

A: No. ISO3086DW, ISO3086DWR, and ISO3086TDW have MSL 2 (1 Year), while MAX14948EWE+T and MAX14949EWE+ have MSL 1 (Unlimited). MSL 1 parts offer superior moisture tolerance and longer shelf life without baking requirements.

Q: What packaging options are available for each substitute?

A: ISO3086DW and ISO3086TDW are supplied in Tube packaging. ISO3086DWR is supplied in Cut Tape/Digi-Reel format. MAX14948EWE+T is supplied in Tape & Reel (TR) packaging. MAX14949EWE+ is supplied in Tube packaging. Verify packaging compatibility with your assembly process requirements.

Q: Are all parts RoHS3 compliant?

A: Yes. All listed parts (ISO3086DW, ISO3086DWR, ISO3086TDW, MAX14948EWE+T, and MAX14949EWE+) are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.