AM26LS31INSR Equivalent & Substitute Parts

Part Overview

The AM26LS31INSR is a 4/0 Driver RS422/RS485 interface IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as Obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates within a supply voltage range of 4.75V to 5.25V and maintains functionality across the industrial temperature range of -40°C to 85°C. Given its obsolete status, the AM26C31INSR has been identified as the manufacturer-recommended substitute.

Substiute Parts

AM26LS31INSR

Texas InstrumentsIn Stock: 78260AM26LS31INSR Datasheet

Current PartRFQ

AM26C31INSR

Texas InstrumentsIn Stock: 3796AM26C31INSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AM26LS31INSR with the AM26C31INSR is based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Identical package type: 16-SOIC (0.209", 5.30mm Width)
• Identical mounting type: Surface Mount
• Identical driver/receiver configuration: 4/0
• Identical operating temperature range: -40°C to 85°C
• Identical RoHS3 compliance status
• Identical MSL rating: 1 (Unlimited)
• Identical REACH and ECCN classifications

Voltage Supply Compatibility: The AM26LS31INSR operates at 4.75V to 5.25V, while the AM26C31INSR operates at 4.5V to 5.5V. The substitute part's wider voltage tolerance encompasses the original part's operating range, ensuring functional compatibility in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The AM26C31INSR is the manufacturer-recommended substitute for the obsolete AM26LS31INSR. Selection of this substitute is supported by the following factors:

Product Status: The AM26C31INSR maintains Active product status, ensuring long-term availability and continued manufacturing support from Texas Instruments, whereas the AM26LS31INSR is Obsolete.

Compliance Alignment: Both parts maintain identical ROHS3 compliance, MSL ratings, REACH status, and ECCN classifications, ensuring regulatory and supply chain continuity.

Electrical Compatibility: The substitute part's expanded voltage supply range (4.5V to 5.5V) fully encompasses the original part's operating window (4.75V to 5.25V), eliminating voltage-related compatibility concerns in existing designs.

Physical and Functional Equivalence: Identical package geometry, mounting type, and driver/receiver configuration ensure direct PCB-level substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can the AM26C31INSR be used as a direct replacement for the AM26LS31INSR?

A: Yes. Both parts share identical package type (16-SOIC), mounting configuration (Surface Mount), driver/receiver count (4/0), and operating temperature range (-40°C to 85°C). The substitute part's wider voltage tolerance (4.5V to 5.5V) is compatible with the original part's supply range (4.75V to 5.25V).

Q: What is the primary reason for substitution?

A: The AM26LS31INSR is classified as Obsolete. The AM26C31INSR is the manufacturer-recommended active alternative, ensuring continued availability and production support.

Q: Are there any voltage-related concerns when substituting?

A: No. The AM26C31INSR operates across a wider voltage range (4.5V to 5.5V) that fully encompasses the original part's specification (4.75V to 5.25V). This expanded tolerance provides additional design margin.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the AM26LS31INSR and AM26C31INSR are ROHS3 compliant, carry identical MSL ratings (1 - Unlimited), and share the same REACH and ECCN classifications.

Q: Is PCB layout modification required for substitution?

A: No. Both parts use the identical 16-SOIC (0.209", 5.30mm Width) package and Surface Mount configuration, enabling direct substitution without PCB redesign.