ISO3088DWRG4 Equivalent & Substitute Parts

Part Overview

The ISO3088DWRG4 is a 2/2 Transceiver with isolated half-duplex RS422/RS485 interface in a 16-SOIC package, manufactured by Texas Instruments. This component is designed for industrial and communication applications requiring galvanic isolation and reliable data transmission over RS422/RS485 networks.

The ISO3088DWRG4 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. Suitable alternatives must maintain identical electrical performance characteristics and package compatibility to ensure direct replacement capability.

Substiute Parts

ISO3088DWRG4

Texas InstrumentsIn Stock: 1105ISO3088DWRG4 Datasheet

Current PartRFQ

ISO3088DWR

Texas InstrumentsIn Stock: 39231ISO3088DWR Datasheet

Parametric EquivalentRFQ

MAX14945EWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1183MAX14945EWE+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ISO3088DWRG4 is determined by the following critical parameters:

Parametric Equivalent Criteria:

• Identical protocol support (RS422/RS485)
• Matching driver/receiver configuration (2/2)
• Half-duplex operation
• Minimum data rate of 20 Mbps
• Supply voltage range compatibility (3.15V ~ 5.5V or 4.5V ~ 5.5V)
• Operating temperature range (-40°C ~ 85°C)
• 16-SOIC package form factor
• Surface mount technology

Manufacturer Recommended Alternative Criteria:

• Functional compatibility with RS422/RS485 interface
• Isolation capability for galvanic separation
• 16-SOIC package compatibility
• Operating temperature range (-40°C ~ 85°C)
• Supply voltage compatibility (4.5V ~ 5.5V minimum)

The ISO3088DWR is a parametric equivalent offering identical electrical specifications and packaging. The MAX14945EWE+ is a manufacturer-recommended alternative providing RS422/RS485 isolation functionality with enhanced isolation voltage rating and improved common mode transient immunity, though with different isolation technology and channel configuration.

Parameter Comparison

Engineering Selection Recommendations

ISO3088DWR is the primary substitute for the ISO3088DWRG4. This part maintains identical electrical specifications, package configuration, and supply voltage requirements. The ISO3088DWR is currently in active production status with substantial inventory availability (39,200 pcs), ensuring supply chain continuity. Both parts share the same base product number (ISO3088) and are fully compatible for direct replacement in existing designs.

MAX14945EWE+ is a manufacturer-recommended alternative for applications where enhanced isolation performance is beneficial. This part provides superior isolation voltage (2750Vrms) and common mode transient immunity (35kV/µs typical) compared to standard RS422/RS485 transceivers. However, the MAX14945EWE+ features different channel configuration (3 channels with 2/1 input distribution) and operates with lower minimum supply voltage (1.71V). This part is suitable for designs requiring higher isolation specifications but may require circuit topology evaluation due to channel differences.

Both substitute options maintain ROHS3 compliance and operate within the required temperature range. Selection should be based on specific isolation requirements and circuit design compatibility.

Frequently Asked Questions (FAQ)

Q: Can ISO3088DWR directly replace ISO3088DWRG4 without circuit modifications?

A: Yes. The ISO3088DWR is a parametric equivalent with identical electrical specifications, package form factor, and pin configuration. Direct substitution is possible without design changes.

Q: What are the key differences between ISO3088DWR and MAX14945EWE+?

A: The ISO3088DWR maintains identical specifications to the original part. The MAX14945EWE+ offers enhanced isolation voltage (2750Vrms vs. standard isolation) and improved common mode transient immunity (35kV/µs), but features different channel configuration (3 channels vs. 2/2 drivers/receivers) and lower minimum supply voltage (1.71V). Circuit evaluation is required for MAX14945EWE+ substitution.

Q: Are both substitute parts available in the same packaging options?

A: Both ISO3088DWR and MAX14945EWE+ are supplied in 16-SOIC surface mount packages with identical physical dimensions (0.295", 7.50mm width). ISO3088DWR is available in Cut Tape and Digi-Reel packaging; MAX14945EWE+ is supplied in Tube packaging.

Q: What is the moisture sensitivity level difference between these parts?

A: ISO3088DWRG4 and ISO3088DWR both have MSL 2 (1 Year). MAX14945EWE+ has MSL 1 (Unlimited), indicating superior moisture resistance and longer shelf life without baking requirements.

Q: Do all three parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8542.39.0001.