SN65LBC172DW Equivalent & Substitute Parts

Part Overview

The SN65LBC172DW is a 4/0 Driver RS422/RS485 interface IC manufactured by Texas Instruments in a 20-SOIC surface mount package. This component is classified as Obsolete, indicating it has been discontinued and is no longer in active production. Finding equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications requiring RS422/RS485 communication protocols.

Substiute Parts

SN65LBC172DW

Texas InstrumentsIn Stock: 2116SN65LBC172DW Datasheet

Current PartRFQ

SN65LBC172ADWR

Texas InstrumentsIn Stock: 3458SN65LBC172ADWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN65LBC172DW is determined by strict equivalence across the following critical parameters:

• Protocol compatibility: RS422/RS485 interface standards
• Driver/Receiver configuration: 4/0 (4 drivers, 0 receivers)
• Data rate capability: 30 Mbps minimum
• Supply voltage range: 4.75V ~ 5.25V
• Operating temperature range: -40°C ~ 85°C
• Package type: 20-SOIC form factor with identical pin pitch and dimensions
• Compliance certifications: ROHS3, REACH Unaffected status

The SN65LBC172ADWR meets all these criteria and is designated as the manufacturer-recommended substitute. This part maintains identical electrical specifications and mechanical compatibility while offering Active product status, ensuring ongoing availability and support.

Parameter Comparison

Engineering Selection Recommendations

The SN65LBC172ADWR is the direct equivalent substitute for the SN65LBC172DW. Both parts are manufactured by Texas Instruments and share identical electrical and mechanical specifications. The primary distinction is product status: the SN65LBC172DW is Obsolete, while the SN65LBC172ADWR maintains Active status.

For new designs or production continuity, the SN65LBC172ADWR is the appropriate selection. Both parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment. The identical 20-SOIC package, supply voltage range, operating temperature range, and RS422/RS485 protocol support enable direct substitution without circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can the SN65LBC172ADWR be used as a direct replacement for the SN65LBC172DW?

A: Yes. The SN65LBC172ADWR is electrically and mechanically identical to the SN65LBC172DW. Both parts feature the same 4/0 driver configuration, 30 Mbps data rate, 4.75V ~ 5.25V supply voltage, -40°C ~ 85°C operating temperature range, and 20-SOIC package. No circuit modifications are required.

Q: Why is the SN65LBC172DW listed as Obsolete?

A: Obsolete status indicates the part has been discontinued by the manufacturer. Texas Instruments has transitioned to the SN65LBC172ADWR as the active equivalent, which provides the same functionality with ongoing production and support.

Q: Are there any compliance differences between these parts?

A: No. Both the SN65LBC172DW and SN65LBC172ADWR are ROHS3 Compliant and REACH Unaffected. Moisture Sensitivity Level is 1 (Unlimited) for both parts.

Q: Will the SN65LBC172ADWR fit the same PCB footprint as the SN65LBC172DW?

A: Yes. Both parts use the 20-SOIC package with identical dimensions (0.295" width, 7.50mm). Pin pitch and layout are identical, enabling direct board-level substitution.

Q: What protocols does the SN65LBC172ADWR support?

A: The SN65LBC172ADWR supports both RS422 and RS485 communication protocols with a 4-driver, 0-receiver configuration and a maximum data rate of 30 Mbps.