ISO3080DW Equivalent & Substitute Parts

Part Overview

The ISO3080DW 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 classified as Last Time Buy, indicating discontinued production with limited remaining inventory. Identifying equivalent and substitute parts is essential for design continuity, long-term supply chain planning, and system reliability in applications requiring isolated RS422/RS485 communication interfaces.

Substiute Parts

ISO3080DW

Texas InstrumentsIn Stock: 2713ISO3080DW Datasheet

Current PartRFQ

ISO3080DWR

Texas InstrumentsIn Stock: 18746ISO3080DWR Datasheet

MFR RecommendedRFQ

MAX14948EWE+T

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ISO3080DW is determined by the following critical parameters:

Primary Substitution Criteria:

• RS422/RS485 protocol support
• 2/2 driver/receiver configuration (or compatible channel architecture)
• Full duplex operation capability
• 16-SOIC package compatibility
• Surface mount technology
• Operating temperature range: -40°C ~ 85°C
• Supply voltage compatibility: 3.15V ~ 5.5V or 4.5V ~ 5.5V

Identified Substitutes:

1. ISO3080DWR (Texas Instruments) — Direct manufacturer equivalent with identical electrical specifications and package. Differs only in packaging format (Cut Tape & Digi-Reel vs. Tube). Product Status: Active.

2. MAX14948EWE+T (Analog Devices Inc./Maxim Integrated) — Functional substitute with RS422/RS485 capability in 16-SOIC package. Offers enhanced isolation voltage (5000Vrms vs. standard isolation) and higher data rate (500 kbps vs. 200 kbps). Product Status: Active.

Parameter Comparison

Engineering Selection Recommendations

ISO3080DWR is the primary recommended substitute. As a Texas Instruments product with identical electrical and functional specifications, it provides direct compatibility with existing designs. The only difference is packaging format (Cut Tape & Digi-Reel vs. Tube), which does not affect electrical performance. With Active product status and significantly higher inventory availability (18,694 pcs vs. 2,690 pcs), this part ensures supply chain continuity without design modification.

MAX14948EWE+T is a secondary alternative for applications requiring enhanced isolation performance or higher data rates. The 5000Vrms isolation voltage and 500 kbps data rate exceed ISO3080DW specifications. However, the unidirectional channel configuration (2/1 vs. 2/2) and different isolation technology (capacitive coupling) require circuit-level evaluation for compatibility. This part is suitable only when application requirements align with its enhanced specifications and channel architecture.

Both substitute parts maintain ROHS3 compliance and the required operating temperature range (-40°C ~ 85°C), ensuring regulatory and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can ISO3080DWR be used as a direct drop-in replacement for ISO3080DW?

A: Yes. ISO3080DWR is electrically and functionally identical to ISO3080DW. The difference is packaging format only (Cut Tape & Digi-Reel vs. Tube). Both parts have the same 16-SOIC package dimensions, pin configuration, and electrical specifications. No circuit modifications are required.

Q: What is the key difference between ISO3080DW and MAX14948EWE+T?

A: Both support RS422/RS485 protocols in 16-SOIC packages. The ISO3080DW is a traditional transceiver with 2/2 driver/receiver configuration and 200 kbps data rate. The MAX14948EWE+T is a digital isolator with 3 channels (2/1 configuration), higher isolation voltage (5000Vrms), and 500 kbps data rate. Channel architecture and isolation technology differ, requiring application-specific evaluation.

Q: Is the MAX14948EWE+T suitable for all ISO3080DW applications?

A: Not necessarily. While both parts support RS422/RS485 and operate in the same temperature range, the MAX14948EWE+T has a unidirectional channel configuration (2/1) compared to the ISO3080DW's full duplex 2/2 configuration. Applications requiring simultaneous bidirectional communication on both channels may not be compatible. Verify channel requirements before substitution.

Q: Why is ISO3080DW marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued this product line. Existing inventory is limited (2,690 pcs). ISO3080DWR is the active replacement from the same manufacturer, offering identical performance with continued availability.

Q: Are all three parts ROHS3 compliant?

A: Yes. ISO3080DW, ISO3080DWR, and MAX14948EWE+T are all ROHS3 compliant, meeting environmental and regulatory requirements for electronic components.

Q: What supply voltage range is compatible across all three parts?

A: The common supply voltage range across all three parts is 4.5V ~ 5.5V. The ISO3080DW and ISO3080DWR also support 3.15V ~ 5.5V, while the MAX14948EWE+T supports a wider range of 1.71V ~ 5.5V. For universal compatibility, use 4.5V ~ 5.5V.