AM26C32QD Equivalent & Substitute Parts

Part Overview

The AM26C32QD is a 0/4 Receiver RS422/RS423 interface IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited inventory availability. Finding equivalent substitute parts is necessary to ensure design continuity and long-term supply chain reliability for applications requiring RS422/RS423 receiver functionality.

Substiute Parts

AM26C32QD

Texas InstrumentsIn Stock: 2012AM26C32QD Datasheet

Current PartRFQ

AM26C32QDR

Texas InstrumentsIn Stock: 9709AM26C32QDR Datasheet

MFR RecommendedRFQ

DS26C32ATM/NOPB

Texas InstrumentsIn Stock: 1330DS26C32ATM/NOPB Datasheet

MFR RecommendedRFQ

DS26C32ATMX/NOPB

Texas InstrumentsIn Stock: 22903DS26C32ATMX/NOPB Datasheet

MFR RecommendedRFQ

SP26LV432CN-L

MaxLinear, Inc.In Stock: 2877SP26LV432CN-L Datasheet

MFR RecommendedRFQ

ST26C32ABDR

STMicroelectronicsIn Stock: 87612ST26C32ABDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AM26C32QD is determined by the following critical parameters:

Primary Compatibility Criteria:

• Protocol support: RS422 and/or RS423
• Receiver configuration: 0/4 (4 receivers, 0 drivers)
• Receiver hysteresis: 60 mV
• Package type: 16-SOIC form factor
• Supply voltage range: 4.5V ~ 5.5V (or compatible range)
• Operating temperature range: Minimum -40°C, maximum 85°C or higher
• Surface mount capability
• RoHS3 compliance

Substitute parts are grouped based on exact alignment with these parameters. Parts meeting all primary criteria are considered direct functional equivalents. Variations in secondary parameters such as data rate, inventory status, or packaging format (tube vs. tape & reel) do not affect electrical substitutability.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Direct Equivalents (Texas Instruments, Active Status):

AM26C32QDR and DS26C32ATMX/NOPB are the preferred substitutes. Both are manufactured by Texas Instruments with Active product status, ensuring ongoing availability and support. AM26C32QDR maintains the full operating temperature range (-40°C ~ 125°C) matching the original part. DS26C32ATMX/NOPB operates to -40°C ~ 85°C with higher inventory availability (22,854 pcs). Both support RS422/RS423 protocols, 0/4 receiver configuration, 60 mV hysteresis, 4.5V ~ 5.5V supply voltage, and 16-SOIC packaging.

Tier 2 - Compatible Alternative (Texas Instruments, Active Status):

DS26C32ATM/NOPB is functionally equivalent with identical electrical specifications to DS26C32ATMX/NOPB but supplied in Tube packaging. Operating temperature range is -40°C ~ 85°C. This option is suitable when packaging format preference differs from tape & reel.

Tier 3 - Cross-Manufacturer Alternatives:

ST26C32ABDR (STMicroelectronics) meets all primary compatibility criteria with Active product status and extensive inventory (87,600 pcs). Operating temperature range is -40°C ~ 85°C with 20Mbps data rate specification. This part is suitable for applications where multi-source qualification is required.

Not Recommended for Direct Substitution:

SP26LV432CN-L (MaxLinear, Inc.) has incompatible supply voltage (3.3V vs. 4.5V ~ 5.5V) and restricted operating temperature range (0°C ~ 70°C). Although it supports RS422/RS485 protocols and maintains 0/4 receiver configuration, the voltage and temperature differences preclude direct substitution in designs specified for the AM26C32QD.

Frequently Asked Questions (FAQ)

Q: Can AM26C32QDR directly replace AM26C32QD?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications: RS422/RS423 protocol support, 0/4 receiver configuration, 60 mV hysteresis, 4.5V ~ 5.5V supply voltage, and 16-SOIC packaging. The primary difference is packaging format (tube vs. tape & reel) and product status (Active vs. Last Time Buy). AM26C32QDR maintains the full -40°C ~ 125°C operating temperature range.

Q: What is the difference between DS26C32ATM/NOPB and DS26C32ATMX/NOPB?

A: Both parts are electrically identical with RS422/RS423 support, 0/4 receiver configuration, 60 mV hysteresis, 4.5V ~ 5.5V supply voltage, and -40°C ~ 85°C operating temperature. The difference is packaging format: DS26C32ATM/NOPB is supplied in Tube, while DS26C32ATMX/NOPB is supplied in Cut Tape & Digi-Reel. DS26C32ATMX/NOPB has significantly higher inventory availability (22,854 pcs vs. 1,312 pcs).

Q: Is ST26C32ABDR suitable for high-temperature applications?

A: ST26C32ABDR operates from -40°C to 85°C, which is 40°C lower than the original AM26C32QD maximum of 125°C. For applications requiring operation above 85°C, AM26C32QDR is the appropriate choice, as it maintains the full -40°C ~ 125°C temperature range.

Q: Why is SP26LV432CN-L not recommended as a substitute?

A: SP26LV432CN-L operates at 3.3V supply voltage and 0°C ~ 70°C temperature range, both incompatible with the AM26C32QD specification of 4.5V ~ 5.5V and -40°C ~ 125°C. Although it provides 0/4 receiver configuration and 60 mV hysteresis, the voltage and temperature incompatibilities prevent direct substitution without circuit redesign.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (AM26C32QDR, DS26C32ATM/NOPB, DS26C32ATMX/NOPB, SP26LV432CN-L, and ST26C32ABDR) are ROHS3 compliant, matching the original AM26C32QD compliance status.

Q: What is the significance of Moisture Sensitivity Level (MSL)?

A: MSL indicates moisture handling requirements during storage and assembly. AM26C32QD, AM26C32QDR, DS26C32ATM/NOPB, and DS26C32ATMX/NOPB have MSL 1 (Unlimited), requiring no special moisture control. ST26C32ABDR also has MSL 1. SP26LV432CN-L has MSL 2 (1 Year), requiring moisture control measures during a 1-year storage period. For most applications, MSL differences do not affect substitutability.