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AM26LS31CDE4 Equivalent & Substitute Parts
Part Overview
The AM26LS31CDE4 is a 4/0 Driver RS422/RS485 interface IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is classified as Last Time Buy, indicating limited future availability. Equivalent and substitute parts are necessary to ensure design continuity and supply chain reliability for applications requiring RS422/RS485 driver functionality with compatible electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | AM26LS31CDE4 |
|---|---|
| Manufacturer | Texas Instruments |
| Type | Driver |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 4/0 |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the AM26LS31CDE4 are grouped based on the following critical parameters that determine functional and mechanical compatibility:
Primary Compatibility Criteria:
- Protocol: RS422/RS485 driver functionality
- Number of Drivers/Receivers: 4/0 configuration
- Package / Case: 16-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
Secondary Variation Parameters:
- Voltage - Supply: 4.75V ~ 5.25V (standard) or 4.5V ~ 5.5V (extended)
- Operating Temperature: 0°C ~ 70°C (standard) or -40°C ~ 85°C (extended)
- Data Rate: Unspecified for AM26LS31 series; 2.5Mbps for MAX3041 series
- Packaging Format: Tube, Cut Tape (CT) & Digi-Reel®, or Tape & Reel (TR)
- Product Status: Active or Last Time Buy
All substitute parts maintain identical package geometry and pinout compatibility, allowing direct board-level substitution within the specified parameter ranges.
Parameter Comparison
| Part Number | Manufacturer | Protocol | Drivers/Receivers | Voltage Supply | Operating Temp | Package | Product Status | Data Rate |
|---|---|---|---|---|---|---|---|---|
| AM26LS31CDE4 | Texas Instruments | RS422, RS485 | 4/0 | 4.75V ~ 5.25V | 0°C ~ 70°C | 16-SOIC | Last Time Buy | — |
| AM26LS31CDR | Texas Instruments | RS422, RS485 | 4/0 | 4.75V ~ 5.25V | 0°C ~ 70°C | 16-SOIC | Active | — |
| AM26LS31CD | Texas Instruments | RS422, RS485 | 4/0 | 4.75V ~ 5.25V | 0°C ~ 70°C | 16-SOIC | Last Time Buy | — |
| DS26LS31CMX/NOPB | National Semiconductor | RS422, RS485 | 4/0 | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC | Active | — |
| DS26LS31CM/NOPB | Texas Instruments | RS422, RS485 | 4/0 | 4.5V ~ 5.5V | 0°C ~ 70°C | 16-SOIC | Obsolete | — |
| DS26C31TM/NOPB | Texas Instruments | RS422, RS485 | 4/0 | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | — |
| DS26C31TMX/NOPB | Texas Instruments | RS422, RS485 | 4/0 | 4.5V ~ 5.5V | -40°C ~ 85°C | 16-SOIC | Active | — |
| MAX3041CSE+ | Analog Devices Inc./Maxim Integrated | RS422, RS485 | 4/0 | 4.75V ~ 5.25V | 0°C ~ 70°C | 16-SOIC | Active | 2.5Mbps |
| MAX3041CSE+T | Analog Devices Inc./Maxim Integrated | RS422, RS485 | 4/0 | 4.75V ~ 5.25V | 0°C ~ 70°C | 16-SOIC | Active | 2.5Mbps |
| MAX3041ESE+ | Analog Devices Inc./Maxim Integrated | RS422, RS485 | 4/0 | 4.75V ~ 5.25V | -40°C ~ 85°C | 16-SOIC | Active | 2.5Mbps |
| MAX3041ESE+T | Analog Devices Inc./Maxim Integrated | RS422, RS485 | 4/0 | 4.75V ~ 5.25V | -40°C ~ 85°C | 16-SOIC | Active | 2.5Mbps |
Engineering Selection Recommendations
Primary Recommendation for Direct Replacement: AM26LS31CDR is the preferred substitute. It is manufactured by Texas Instruments with identical electrical specifications (4.75V ~ 5.25V supply, 0°C ~ 70°C operating range) and maintains Active product status, ensuring long-term availability and supply chain continuity.
Extended Temperature Range Alternatives: DS26C31TM/NOPB and DS26C31TMX/NOPB provide extended operating temperature range (-40°C ~ 85°C) with slightly wider supply voltage tolerance (4.5V ~ 5.5V). These are suitable for applications requiring enhanced thermal performance while maintaining identical package and driver configuration.
Extended Supply Voltage Tolerance: DS26LS31CMX/NOPB offers extended supply voltage range (4.5V ~ 5.5V) with standard operating temperature (0°C ~ 70°C), providing flexibility for systems with variable power supply conditions.
Maxim Integrated Alternatives: MAX3041CSE+, MAX3041CSE+T, MAX3041ESE+, and MAX3041ESE+T are functionally equivalent with specified 2.5Mbps data rate capability. These parts are manufactured by Analog Devices Inc./Maxim Integrated and maintain Active product status. Temperature-rated variants (ESE+) support -40°C ~ 85°C operation. Packaging variants (CSE+ in Tube, CSE+T in Tape & Reel, ESE+ in Tube, ESE+T in Tape & Reel) accommodate different procurement and assembly requirements.
All substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance profile.
Frequently Asked Questions (FAQ)
Q: Can AM26LS31CDR be used as a direct replacement for AM26LS31CDE4? A: Yes. AM26LS31CDR is electrically and mechanically identical to AM26LS31CDE4, with the same supply voltage (4.75V ~ 5.25V), operating temperature range (0°C ~ 70°C), and 16-SOIC package. The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tube) and Active product status versus Last Time Buy.
Q: What is the difference between AM26LS31 and DS26C31 series parts? A: Both are 4/0 RS422/RS485 drivers in 16-SOIC packages. The DS26C31 series offers extended operating temperature range (-40°C ~ 85°C) and slightly wider supply voltage tolerance (4.5V ~ 5.5V) compared to the AM26LS31 series (0°C ~ 70°C, 4.75V ~ 5.25V). Functional driver configuration remains identical.
Q: Are MAX3041 parts compatible with AM26LS31CDE4? A: Yes, with the following considerations: MAX3041 parts maintain identical 4/0 driver configuration, 16-SOIC package, and supply voltage range (4.75V ~ 5.25V). They include specified 2.5Mbps data rate capability. Operating temperature variants are available: standard (0°C ~ 70°C) and extended (-40°C ~ 85°C). All MAX3041 variants are Active products from Analog Devices Inc./Maxim Integrated.
Q: What packaging options are available for substitute parts? A: Substitute parts are available in three packaging formats: Tube, Cut Tape (CT) & Digi-Reel®, and Tape & Reel (TR). Selection depends on procurement volume and assembly process requirements. All maintain identical component specifications and 16-SOIC package geometry.
Q: Is DS26LS31CM/NOPB suitable for new designs? A: No. DS26LS31CM/NOPB is classified as Obsolete. While functionally compatible, it should not be selected for new designs. Use Active alternatives such as AM26LS31CDR, DS26LS31CMX/NOPB, or MAX3041 series parts instead.
Q: Do all substitute parts meet the same compliance standards? A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original AM26LS31CDE4 specifications. REACH status is Unaffected for all parts.
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