AM26C31QD Equivalent & Substitute Parts

Part Overview

The AM26C31QD is a 4/0 Driver interface IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as Last Time Buy, indicating limited availability of this specific packaging configuration. The AM26C31QD operates within a 4.5V to 5.5V supply voltage range and supports operating temperatures from -40°C to 125°C. Equivalent and substitute parts are necessary due to inventory constraints and packaging availability variations across different manufacturers and distribution channels.

Key Parameters

Parameter	Value
Manufacturer Part Number	AM26C31QD
Manufacturer	Texas Instruments
Category	Interface
Type	Driver
Number of Drivers/Receivers	4/0
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the AM26C31QD is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 16-SOIC (0.154", 3.90mm Width) package to ensure PCB footprint compatibility
Electrical Specifications: Supply voltage range of 4.5V ~ 5.5V and driver/receiver configuration of 4/0 must be maintained
Mounting Type: Surface mount technology is required for all substitutes
Compliance Standards: RoHS3 compliance is mandatory; REACH Unaffected status is required

Substitute parts are grouped into two categories based on operating temperature range:

Category A - Extended Temperature Range (-40°C ~ 125°C): AM26C31QDR (Texas Instruments)

Category B - Standard Temperature Range (-40°C ~ 85°C): DS26C31TM/NOPB, DS26C31TMX/NOPB (Texas Instruments), ST26C31BDR (STMicroelectronics)

Parameter Comparison

Parameter	AM26C31QD	AM26C31QDR	DS26C31TM/NOPB	DS26C31TMX/NOPB	ST26C31BDR
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	STMicroelectronics
Type	Driver	Driver	Driver	Driver	Driver
Number of Drivers/Receivers	4/0	4/0	4/0	4/0	4/0
Package / Case	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)
Product Status	Last Time Buy	Active	Active	Active	Active

Engineering Selection Recommendations

AM26C31QDR is the primary substitute for applications requiring the extended operating temperature range of -40°C to 125°C. This part maintains identical electrical specifications and MSL rating while offering active product status and improved availability through Cut Tape and Digi-Reel packaging options.

DS26C31TM/NOPB and DS26C31TMX/NOPB are suitable substitutes for applications with operating temperature requirements limited to -40°C to 85°C. Both parts are manufactured by Texas Instruments with active product status. DS26C31TMX/NOPB offers superior inventory availability and Cut Tape packaging, while DS26C31TM/NOPB is available in Tube packaging.

ST26C31BDR is a cross-manufacturer substitute from STMicroelectronics suitable for -40°C to 85°C temperature range applications. This part maintains full electrical compatibility and RoHS3 compliance. The MSL rating of 3 (168 Hours) requires consideration for moisture-sensitive storage and handling protocols compared to the MSL 1 rating of other alternatives.

Frequently Asked Questions (FAQ)

Q: Can AM26C31QDR directly replace AM26C31QD in all applications?

A: Yes, AM26C31QDR is a direct substitute. Both parts share identical electrical specifications, package type, and MSL rating. The primary difference is packaging format (Cut Tape/Digi-Reel versus Tube) and product status (Active versus Last Time Buy).

Q: What is the impact of operating temperature range differences between AM26C31QD and DS26C31TM/NOPB?

A: AM26C31QD supports -40°C to 125°C while DS26C31TM/NOPB supports -40°C to 85°C. DS26C31TM/NOPB is suitable only for applications where the maximum operating temperature does not exceed 85°C. Applications requiring operation above 85°C must use AM26C31QDR or AM26C31QD.

Q: Are there packaging differences between substitute parts?

A: Yes. AM26C31QD and DS26C31TM/NOPB are supplied in Tube packaging. AM26C31QDR and DS26C31TMX/NOPB are supplied in Cut Tape and Digi-Reel formats. ST26C31BDR is supplied in Cut Tape and Digi-Reel format. Packaging selection depends on assembly process requirements and inventory management practices.

Q: What is the significance of MSL rating differences?

A: AM26C31QD, AM26C31QDR, DS26C31TM/NOPB, and DS26C31TMX/NOPB have MSL 1 (Unlimited), allowing indefinite shelf life under normal conditions. ST26C31BDR has MSL 3 (168 Hours), requiring moisture control measures and limiting shelf life to 168 hours after moisture barrier bag opening. MSL 3 components require desiccant storage and may require baking before reflow soldering if storage time exceeds specifications.

Q: Can ST26C31BDR be used as a substitute despite different manufacturer?

A: Yes, ST26C31BDR from STMicroelectronics is electrically and mechanically compatible with AM26C31QD for applications operating within -40°C to 85°C. Cross-manufacturer substitution is valid when all critical parameters match. The MSL 3 rating requires additional moisture handling procedures.

Q: Which substitute offers the best inventory availability?

A: DS26C31TMX/NOPB offers the highest inventory level at 20,338 pieces in stock, followed by ST26C31BDR at 30,449 pieces. Both are available in Cut Tape and Digi-Reel packaging formats suitable for high-volume production environments.

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