AM26LS31CDR Equivalent & Substitute Parts

Part Overview

The AM26LS31CDR is a 4/0 Driver RS422/RS485 interface IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This part operates within a supply voltage range of 4.75V to 5.25V and supports industrial communication protocols. The AM26LS31CDR maintains Active product status with 38,110 units in current inventory.

Substitute parts become necessary when the primary part reaches end-of-life status, when alternative packaging formats are required, or when extended operating temperature ranges are needed for specific applications. The parts listed below provide functional equivalence while maintaining compatibility with the 16-SOIC package footprint and RS422/RS485 protocol support.

Substiute Parts

AM26LS31CDR

Texas InstrumentsIn Stock: 38219AM26LS31CDR Datasheet

Current PartRFQ

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

MAX3041ESE+

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the AM26LS31CDR is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Protocol support: RS422 and RS485
• Number of drivers/receivers: 4/0 configuration
• Package type: 16-SOIC surface mount
• Package dimensions: 0.154" width (3.90mm)
• RoHS3 compliance status

Variable Parameters Affecting Substitution:

• Supply voltage range (4.75V–5.25V for AM26LS31CDR; 4.5V–5.5V for DS26C31 variants)
• Operating temperature range (0°C–70°C for AM26LS31CDR; -40°C–85°C for extended-range variants)
• Data rate specifications (where provided)
• Packaging format (Tube, Cut Tape & Digi-Reel)

All listed substitute parts maintain the mandatory compatibility parameters. Differences in supply voltage range and operating temperature represent design enhancements or extended specifications rather than functional incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

DS26C31TMX/NOPB and DS26C31TM/NOPB are manufacturer-recommended substitutes from Texas Instruments. Both maintain Active product status and ROHS3 compliance. The TMX variant offers Cut Tape & Digi-Reel packaging with significantly higher inventory (20,338 units) compared to the TM variant in Tube packaging (1,525 units). Both variants provide extended operating temperature range (-40°C to 85°C) and wider supply voltage tolerance (4.5V–5.5V).

Secondary Substitutes (Functional Equivalence with Status Considerations):

DS26LS31CMX/NOPB maintains Active status from National Semiconductor with 8,413 units available. Operating temperature range matches the AM26LS31CDR (0°C–70°C), and supply voltage range is expanded (4.5V–5.5V).

DS26LS31CM/NOPB is classified as Obsolete and should be avoided for new designs despite functional compatibility.

Alternative Manufacturer Options:

MAX3041CSE+ and MAX3041ESE+ from Analog Devices Inc./Maxim Integrated provide functional equivalence with Active product status and ROHS3 compliance. The MAX3041ESE+ variant includes extended operating temperature range (-40°C to 85°C) with 12,700 units in inventory. Both MAX variants specify 2.5Mbps data rate capability.

Frequently Asked Questions (FAQ)

Q: Can DS26C31TMX/NOPB directly replace AM26LS31CDR in existing designs?

A: Yes. Both parts maintain identical 4/0 driver/receiver configuration, RS422/RS485 protocol support, and 16-SOIC package footprint. The DS26C31TMX/NOPB operates within a wider supply voltage range (4.5V–5.5V versus 4.75V–5.25V) and extended temperature range (-40°C–85°C versus 0°C–70°C), making it functionally compatible for applications within the AM26LS31CDR's original specifications.

Q: What is the difference between DS26C31TM/NOPB and DS26C31TMX/NOPB?

A: Both parts are functionally identical with identical electrical specifications. The primary difference is packaging format: TM/NOPB uses Tube packaging with 1,525 units in stock, while TMX/NOPB uses Cut Tape & Digi-Reel packaging with 20,338 units in stock. Selection depends on procurement volume and assembly line requirements.

Q: Why should DS26LS31CM/NOPB be avoided?

A: DS26LS31CM/NOPB carries Obsolete product status, indicating Texas Instruments has discontinued active manufacturing and support. While functionally compatible, new designs should utilize Active status parts to ensure long-term availability and manufacturer support.

Q: How do MAX3041 variants compare to Texas Instruments options?

A: MAX3041CSE+ and MAX3041ESE+ from Analog Devices Inc./Maxim Integrated provide equivalent 4/0 driver/receiver functionality in 16-SOIC packaging. Both specify 2.5Mbps data rate. MAX3041ESE+ includes extended operating temperature range (-40°C–85°C). Both maintain Active status and ROHS3 compliance. Selection between Texas Instruments and Maxim variants depends on supply chain preferences and inventory availability.

Q: Are all substitute parts ROHS3 compliant?

A: DS26C31TMX/NOPB, DS26C31TM/NOPB, MAX3041CSE+, and MAX3041ESE+ are confirmed ROHS3 compliant. DS26LS31CMX/NOPB and DS26LS31CM/NOPB compliance information is not provided in the available data.

Q: What packaging options are available for substitutes?

A: DS26C31TMX/NOPB offers Cut Tape & Digi-Reel packaging. DS26C31TM/NOPB, MAX3041CSE+, and MAX3041ESE+ use Tube packaging. DS26LS31CMX/NOPB packaging format is not specified. Selection should align with assembly equipment capabilities and procurement batch size requirements.