AM26LS31CDRG4 Equivalent & Substitute Parts

Part Overview

The AM26LS31CDRG4 is a 4-driver/0-receiver RS422/RS485 interface driver IC manufactured by Texas Instruments, packaged in 16-SOIC surface mount configuration. This part is designated as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring RS422/RS485 driver functionality.

Substiute Parts

AM26LS31CDRG4

Texas InstrumentsIn Stock: 6477AM26LS31CDRG4 Datasheet

Current PartRFQ

AM26LS31CDR

Texas InstrumentsIn Stock: 38219AM26LS31CDR Datasheet

MFR RecommendedRFQ

DS26C31TM/NOPB

Texas InstrumentsIn Stock: 1540DS26C31TM/NOPB Datasheet

MFR RecommendedRFQ

DS26C31TMX/NOPB

Texas InstrumentsIn Stock: 20390DS26C31TMX/NOPB Datasheet

MFR RecommendedRFQ

DS26LS31CM/NOPB

Texas InstrumentsIn Stock: 4449DS26LS31CM/NOPB Datasheet

MFR RecommendedRFQ

DS26LS31CMX/NOPB

National SemiconductorIn Stock: 8449DS26LS31CMX/NOPB Datasheet

MFR RecommendedRFQ

MAX3041CSE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1422MAX3041CSE+ Datasheet

MFR RecommendedRFQ

MAX3041CSE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 2097MAX3041CSE+T Datasheet

MFR RecommendedRFQ

MAX3041ESE+

Analog Devices Inc./Maxim IntegratedIn Stock: 12743MAX3041ESE+ Datasheet

MFR RecommendedRFQ

MAX3041ESE+T

Analog Devices Inc./Maxim IntegratedIn Stock: 726MAX3041ESE+T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AM26LS31CDRG4 is determined by the following critical parameters:

• Protocol compatibility: RS422/RS485 driver functionality
• Driver/receiver configuration: 4/0 (4 drivers, 0 receivers)
• Package type: 16-SOIC surface mount
• Supply voltage range: Must accommodate 4.75V ~ 5.25V operation
• Operating temperature range: Must support 0°C ~ 70°C minimum
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 (Unlimited)

Substitute parts are grouped into two categories based on electrical parameter compatibility:

Category A - Direct Electrical Match (4.75V ~ 5.25V supply): Parts with identical supply voltage specifications, ensuring drop-in compatibility without circuit modification.

Category B - Extended Electrical Specification (4.5V ~ 5.5V supply): Parts with wider supply voltage tolerance that encompass the original specification range, suitable for applications with stable power supplies within the original operating window.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Direct Replacement: AM26LS31CDR is the manufacturer-recommended substitute. It maintains identical electrical specifications (4.75V ~ 5.25V supply, 0°C ~ 70°C operating range) and is in Active product status, ensuring long-term availability and supply chain stability.

Extended Temperature Range Alternative: DS26C31TM/NOPB and DS26C31TMX/NOPB provide extended operating temperature range (-40°C ~ 85°C) with wider supply voltage tolerance (4.5V ~ 5.5V). These parts are suitable for applications requiring enhanced thermal performance while maintaining RS422/RS485 driver functionality in 16-SOIC packaging.

Alternative Manufacturer Option: MAX3041CSE+, MAX3041CSE+T, MAX3041ESE+, and MAX3041ESE+T (Analog Devices Inc./Maxim Integrated) provide functionally equivalent RS422/RS485 driver solutions with specified 2.5Mbps data rate capability. These parts are in Active status with ROHS3 compliance and MSL 1 rating.

Not Recommended: DS26LS31CM/NOPB is designated Obsolete and should not be selected for new designs despite electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can AM26LS31CDR be used as a direct replacement for AM26LS31CDRG4? A: Yes. AM26LS31CDR is the manufacturer-recommended substitute with identical electrical specifications, package type, and operating parameters. The difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel).

Q: What is the difference between AM26LS31CDR and DS26C31TM/NOPB? A: Both are 4/0 RS422/RS485 drivers in 16-SOIC packaging. DS26C31TM/NOPB offers extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C) and wider supply voltage tolerance (4.5V ~ 5.5V versus 4.75V ~ 5.25V). Selection depends on application thermal requirements.

Q: Are MAX3041 series parts compatible with AM26LS31CDRG4? A: Yes, functionally compatible. MAX3041 series parts provide RS422/RS485 driver functionality in identical 16-SOIC packaging with matching supply voltage specifications (4.75V ~ 5.25V). They are manufactured by Analog Devices Inc./Maxim Integrated and are in Active status.

Q: What does "4/0" mean in the driver/receiver specification? A: This indicates 4 drivers and 0 receivers. The part is configured exclusively for transmission on RS422/RS485 bus lines without integrated receiver functionality.

Q: Can I use DS26LS31CMX/NOPB as a substitute? A: DS26LS31CMX/NOPB is functionally compatible with matching 4/0 driver configuration and 16-SOIC packaging. However, it is manufactured by National Semiconductor rather than Texas Instruments. Verify supply chain availability and lead times before selection.

Q: What is the significance of packaging format differences (Tube, Cut Tape, Tape & Reel)? A: Packaging format affects handling, storage, and automated assembly compatibility. Electrical and functional specifications remain identical across packaging formats. Select based on manufacturing process requirements and assembly equipment compatibility.

Q: Why is DS26LS31CM/NOPB listed if it is Obsolete? A: DS26LS31CM/NOPB is included for reference and historical compatibility documentation. It should not be selected for new designs. Use AM26LS31CDR or DS26C31TM/NOPB instead.