AM26LS31CNS-H Equivalent & Substitute Parts

Part Overview

The AM26LS31CNS-H 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, indicating discontinued production and limited availability in the market. The part operates within a supply voltage range of 4.75V to 5.25V and supports operating temperatures from 0°C to 70°C. Due to its obsolete status, identifying functionally equivalent active alternatives is essential for system redesign, long-term supply chain planning, and new product development initiatives.

Substiute Parts

AM26LS31CNS-H

Texas InstrumentsIn Stock: 886AM26LS31CNS-H Datasheet

Current PartRFQ

AM26LS31CNSR

Texas InstrumentsIn Stock: 3950AM26LS31CNSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AM26LS31CNS-H is determined by strict equivalence across the following critical parameters:

Protocol Compatibility: Both the main part and substitute must support RS422 and RS485 serial communication protocols.

Driver/Receiver Configuration: The 4/0 configuration (4 drivers, 0 receivers) must be maintained to ensure functional compatibility with existing circuit designs.

Electrical Specifications: Supply voltage range (4.75V ~ 5.25V) and operating temperature range (0°C ~ 70°C) must be identical or encompassing.

Package Compatibility: The 16-SOIC surface mount package with 0.209" width (5.30mm) is mandatory for PCB layout compatibility.

Regulatory Compliance: ROHS3 compliance and MSL rating of 1 (Unlimited) must be maintained.

The AM26LS31CNSR is identified as the direct substitute based on complete alignment across all these parameters, with the additional advantage of Active product status and higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The AM26LS31CNSR is the direct functional equivalent of the AM26LS31CNS-H. Both parts share identical electrical specifications, package geometry, and protocol support. The primary distinction is product lifecycle status: the AM26LS31CNS-H is Obsolete, while the AM26LS31CNSR maintains Active status with significantly higher inventory availability (3938 units versus 842 units).

For new designs or system redesigns, the AM26LS31CNSR is the appropriate selection. This part maintains full ROHS3 compliance and carries REACH Unaffected status, satisfying regulatory requirements for current manufacturing standards. The Active product status ensures long-term supply chain viability and access to manufacturer technical support.

For legacy system maintenance where the AM26LS31CNS-H is currently deployed, the AM26LS31CNSR provides a direct drop-in replacement without circuit modification, given the complete parameter alignment across electrical, mechanical, and thermal specifications.

Frequently Asked Questions (FAQ)

Q: Can the AM26LS31CNSR be used as a direct replacement for the AM26LS31CNS-H?

A: Yes. Both parts are identical in electrical specifications, package configuration, and protocol support. No circuit modifications are required for substitution.

Q: What is the significance of the Obsolete status for the AM26LS31CNS-H?

A: Obsolete status indicates that Texas Instruments has discontinued production. This creates supply constraints and limits access to new inventory. The AM26LS31CNSR, with Active status, ensures continued availability and manufacturer support.

Q: Are there differences in packaging between these parts?

A: Both parts use the 16-SOIC surface mount package with identical dimensions (0.209" width, 5.30mm). Packaging options differ (the substitute offers Cut Tape and Digi-Reel options), but the physical package remains the same.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the AM26LS31CNS-H and AM26LS31CNSR are ROHS3 compliant. The substitute additionally carries REACH Unaffected status and includes ECCN and HTSUS classifications for export compliance documentation.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching protocol (RS422/RS485), driver/receiver configuration (4/0), supply voltage range (4.75V ~ 5.25V), operating temperature (0°C ~ 70°C), package type (16-SOIC), and regulatory compliance (ROHS3, MSL 1).

Q: Is the AM26LS31 base product number significant?

A: Yes. Both parts share the AM26LS31 base product number, indicating they are variants of the same core design. This confirms functional equivalence at the design level.