AM26LS31CNS Equivalent & Substitute Parts

Part Overview

The AM26LS31CNS is a 4-channel RS422/RS485 driver interface IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as a Last Time Buy product, indicating discontinued production with limited remaining inventory. The identification of equivalent and substitute parts is necessary to ensure design continuity and procurement flexibility for applications requiring RS422/RS485 driver functionality with identical electrical and mechanical specifications.

Substiute Parts

AM26LS31CNS

Texas InstrumentsIn Stock: 26193AM26LS31CNS Datasheet

Current PartRFQ

AM26LS31CNSR

Texas InstrumentsIn Stock: 3950AM26LS31CNSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Electrical Equivalence Criteria:

• Protocol support: RS422 and RS485 compatibility required
• Driver/Receiver configuration: 4 drivers, 0 receivers (4/0 topology)
• Supply voltage range: 4.75V to 5.25V
• Operating temperature range: 0°C to 70°C minimum

Mechanical Equivalence Criteria:

• Package type: 16-SOIC (0.209", 5.30mm Width)
• Mounting technology: Surface Mount
• Pin count and footprint compatibility

Compliance Criteria:

• RoHS3 compliance required
• Moisture Sensitivity Level 1 (Unlimited)

The AM26LS31CNSR meets all substitution criteria and is classified as the manufacturer-recommended equivalent part.

Parameter Comparison

Engineering Selection Recommendations

AM26LS31CNSR is the direct substitute for AM26LS31CNS based on the following factors:

1. Product Status Alignment: The AM26LS31CNSR maintains Active product status, ensuring continued availability and manufacturer support, whereas the AM26LS31CNS is Last Time Buy with limited inventory (26,178 pcs).

2. Electrical and Mechanical Equivalence: Both parts share identical specifications across all critical parameters including supply voltage (4.75V ~ 5.25V), operating temperature range (0°C ~ 70°C), driver configuration (4/0), and package geometry (16-SOIC).

3. Compliance Certification: Both parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) rating, ensuring compatibility with current manufacturing and environmental standards.

4. Packaging Flexibility: The AM26LS31CNSR is available in Cut Tape (CT) and Digi-Reel® packaging options, providing procurement flexibility compared to the main part's standard packaging.

5. Base Product Continuity: Both parts share the same base product number (AM26LS31), confirming functional and pin-level equivalence.

Frequently Asked Questions (FAQ)

Q: Can AM26LS31CNSR be used as a direct replacement for AM26LS31CNS in existing designs?

A: Yes. The AM26LS31CNSR is electrically and mechanically equivalent to the AM26LS31CNS. Both parts feature identical supply voltage ranges (4.75V ~ 5.25V), operating temperature specifications (0°C ~ 70°C), driver configuration (4/0), and 16-SOIC package geometry. No circuit modifications are required.

Q: What is the difference between AM26LS31CNS and AM26LS31CNSR?

A: The primary difference is product status and packaging. The AM26LS31CNS is Last Time Buy with limited inventory, while the AM26LS31CNSR is Active production. The AM26LS31CNSR is available in Cut Tape (CT) and Digi-Reel® packaging formats. All electrical and mechanical specifications are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both AM26LS31CNS and AM26LS31CNSR are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: What is the package type for these parts?

A: Both parts use 16-SOIC (0.209", 5.30mm Width) surface mount package with 16-pin configuration. The footprint and pin assignments are identical.

Q: Why is AM26LS31CNS marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this specific part number variant. The AM26LS31CNSR represents the active production equivalent with identical functionality.

Q: Can these parts be used in RS422 and RS485 applications interchangeably?

A: Yes. Both parts support RS422 and RS485 protocols with 4-driver, 0-receiver configuration. Protocol selection is determined by application circuit design, not part selection.