AM26C31INSR-B Equivalent & Substitute Parts

Part Overview

The AM26C31INSR-B is a 4/0 Driver RS422 interface IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is classified as obsolete, indicating it has been discontinued and is no longer in active production. The AM26C31INSR-B was designed for RS422 serial communication applications requiring four driver outputs and no receiver inputs. Due to its obsolete status, locating equivalent or substitute parts is necessary for ongoing system support, maintenance, and new design implementations where RS422 driver functionality is required.

Substiute Parts

AM26C31INSR-B

Texas InstrumentsIn Stock: 1208AM26C31INSR-B Datasheet

Current PartRFQ

AM26C31INSR

Texas InstrumentsIn Stock: 3796AM26C31INSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AM26C31INSR-B is determined by the following critical parameters that must remain consistent:

Electrical Compatibility Parameters:

• Protocol: RS422 driver functionality
• Number of Drivers/Receivers: 4/0 configuration
• Voltage - Supply: 4.5V ~ 5.5V operating range
• Operating Temperature: -40°C ~ 85°C

Physical & Environmental Compatibility Parameters:

• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Package Consideration: The AM26C31INSR-B uses a 14-SOIC package. Substitute parts may utilize different package variants (such as 16-SOIC) provided the pin configuration and electrical characteristics remain functionally equivalent for the application.

The AM26C31INSR from Texas Instruments qualifies as a substitute based on matching all critical electrical parameters, maintaining the same supply voltage range, operating temperature range, and RS422 driver protocol specification. Both parts are manufactured by the same vendor and maintain ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

The AM26C31INSR is the qualified substitute for the obsolete AM26C31INSR-B. Selection of this substitute is based on the following engineering criteria:

Product Status Alignment: The AM26C31INSR maintains Active product status from Texas Instruments, ensuring continued availability and manufacturing support. This addresses the primary limitation of the obsolete AM26C31INSR-B.

Electrical Parameter Equivalence: Both parts operate within identical supply voltage ranges (4.5V ~ 5.5V) and temperature specifications (-40°C ~ 85°C), ensuring direct functional compatibility in RS422 driver applications requiring 4/0 driver/receiver configuration.

Compliance & Certification: Both parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, satisfying environmental and regulatory requirements for industrial and commercial applications.

Package Consideration: The AM26C31INSR utilizes a 16-SOIC package compared to the 14-SOIC of the original part. PCB layout modifications may be required to accommodate the different pin count and package footprint. The identical package width (5.30mm) facilitates potential adaptation in existing designs.

Availability: The AM26C31INSR is available in Cut Tape (CT) and Digi-Reel® packaging options with 3740 units in stock, providing immediate procurement capability for production requirements.

Frequently Asked Questions (FAQ)

Q: Can the AM26C31INSR directly replace the AM26C31INSR-B without PCB modifications?

A: Direct pin-for-pin replacement is not possible due to package differences. The AM26C31INSR-B uses a 14-SOIC package while the AM26C31INSR uses a 16-SOIC package. PCB layout and footprint modifications are required for physical mounting. However, the electrical functionality and pin assignments for the driver outputs remain compatible.

Q: Are the electrical specifications identical between these two parts?

A: Yes. Both parts operate at 4.5V ~ 5.5V supply voltage, function across -40°C ~ 85°C operating temperature range, and implement RS422 driver protocol with 4/0 driver/receiver configuration. Electrical compatibility is confirmed.

Q: What is the significance of the AM26C31INSR-B being obsolete?

A: Obsolete status indicates Texas Instruments has discontinued manufacturing this part. Existing inventory may be limited and future availability cannot be guaranteed. The AM26C31INSR substitute is recommended for new designs and ongoing system support due to its Active product status.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both the AM26C31INSR-B and AM26C31INSR are ROHS3 compliant and rated at MSL Level 1 (Unlimited), indicating identical environmental handling and regulatory compliance.

Q: What packaging options are available for the substitute part?

A: The AM26C31INSR is available in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both manual assembly and automated production environments.

Q: Is the base product number the same for both parts?

A: Yes. Both parts share the base product number AM26C31, indicating they are part of the same product family with equivalent core functionality.