SN75140PSR Equivalent & Substitute Parts

Part Overview

The SN75140PSR is a 0/2 Receiver interface IC manufactured by Texas Instruments in an 8-SOIC package. This component is classified as Obsolete, indicating it is no longer in active production. Due to its obsolete status and limited availability for new designs, identifying functionally compatible substitute components is essential for system continuity and procurement planning.

Substiute Parts

SN75140PSR

Texas InstrumentsIn Stock: 9857SN75140PSR Datasheet

Current PartRFQ

SN65C1167ENSR

Texas InstrumentsIn Stock: 9568SN65C1167ENSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75140PSR is determined by the following critical parameters:

• Supply voltage compatibility: 4.5V ~ 5.5V
• Interface category classification
• Surface mount mounting type
• RoHS3 compliance requirement
• MSL Level 1 rating

The SN65C1167ENSR qualifies as a manufacturer-recommended substitute based on matching supply voltage range (4.5V ~ 5.5V), surface mount configuration, and equivalent compliance certifications (ROHS3, MSL Level 1). While the substitute offers enhanced functionality (2/2 Transceiver vs. 0/2 Receiver) and extended operating temperature range, the core electrical parameters align with the original specification requirements.

Parameter Comparison

Engineering Selection Recommendations

The SN65C1167ENSR is the manufacturer-recommended substitute for the obsolete SN75140PSR. Both components maintain identical supply voltage specifications (4.5V ~ 5.5V) and equivalent compliance certifications (ROHS3 Compliant, MSL Level 1). The substitute is currently in Active production status, ensuring long-term availability and supply chain stability.

Selection of the SN65C1167ENSR requires accommodation of a larger package footprint (16-SOIC vs. 8-SOIC) and extended operating temperature capability (-40°C ~ 85°C vs. 0°C ~ 70°C). The substitute provides bidirectional transceiver functionality with RS422 and RS485 protocol support, offering enhanced system integration capabilities compared to the original receiver-only configuration.

Frequently Asked Questions (FAQ)

Q: Can the SN65C1167ENSR directly replace the SN75140PSR without circuit modifications?

A: The SN65C1167ENSR requires PCB layout modifications due to package size difference (16-SOIC vs. 8-SOIC). Pin configuration and functional mapping must be evaluated against the original circuit design. Voltage supply compatibility (4.5V ~ 5.5V) is maintained.

Q: What is the primary reason for substitution?

A: The SN75140PSR is classified as Obsolete and no longer manufactured. The SN65C1167ENSR is the manufacturer-recommended active alternative with equivalent electrical specifications.

Q: Are compliance certifications maintained with the substitute?

A: Yes. Both components are ROHS3 Compliant with MSL Level 1 rating. REACH Status is Unaffected for both parts.

Q: Does the substitute support the same operating temperature range?

A: The SN65C1167ENSR extends the operating temperature range to -40°C ~ 85°C, compared to the original 0°C ~ 70°C specification. This provides broader environmental compatibility.

Q: What are the key electrical differences between the original and substitute?

A: The SN75140PSR is a 0/2 Receiver with single-direction capability. The SN65C1167ENSR is a 2/2 Full Duplex Transceiver with RS422 and RS485 protocol support, providing bidirectional communication functionality.