SN75124NS Equivalent & Substitute Parts

Part Overview

The SN75124NS is a 0/3 Receiver interface IC manufactured by Texas Instruments in a 16-SO surface mount package. This component is classified as Obsolete, indicating it is no longer in active production. The SN75124NS operates within a supply voltage range of 4.75V to 5.25V and is rated for operating temperatures from 0°C to 70°C. With 989 pieces currently in stock, this part remains available through existing inventory channels. Due to its obsolete status, identifying functionally compatible substitute components is essential for design continuity and long-term supply chain reliability.

Substiute Parts

SN75124NS

Texas InstrumentsIn Stock: 1049SN75124NS Datasheet

Current PartRFQ

AM26C32IDR

Texas InstrumentsIn Stock: 22842AM26C32IDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75124NS is determined by compatibility across the following critical parameters:

Mandatory Compatibility Criteria:

• Mounting Type: Both parts must be Surface Mount to ensure PCB assembly compatibility
• Package Family: Both parts must use 16-pin SOIC packaging to maintain footprint compatibility
• Receiver Configuration: The substitute must support receiver functionality with compatible driver/receiver channel counts
• Supply Voltage Range: The substitute operating voltage must overlap or encompass the original specification
• Operating Temperature Range: The substitute must support the required thermal operating window
• RoHS Compliance: Both parts must maintain equivalent environmental compliance status

The AM26C32IDR qualifies as a substitute based on these criteria. Both components are Surface Mount 16-SOIC packaged receiver ICs from Texas Instruments with ROHS3 compliance and MSL 1 ratings.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SN75124NS is classified as Obsolete, while the AM26C32IDR maintains Active product status. Active status ensures continued manufacturing availability, documented technical support, and supply chain stability. For new designs or long-term production requirements, the AM26C32IDR is the appropriate selection.

Compliance and Certification: Both components are ROHS3 Compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring equivalent environmental and handling compliance. The AM26C32IDR includes additional compliance documentation including REACH Unaffected status and ECCN/HTSUS classifications, supporting international distribution requirements.

Supply Chain Availability: The AM26C32IDR has 22,800 pieces in stock with Active product status, compared to 989 pieces of the obsolete SN75124NS. This inventory differential reflects the market transition toward the AM26C32IDR as the current-generation solution.

Frequently Asked Questions (FAQ)

Q: Can the AM26C32IDR directly replace the SN75124NS in existing designs?

A: Both components are 16-SOIC Surface Mount receiver ICs from Texas Instruments with compatible supply voltage ranges (4.75V-5.25V overlaps with 4.5V-5.5V) and identical RoHS/MSL compliance. However, the AM26C32IDR features 0/4 receiver configuration versus the SN75124NS 0/3 configuration, and operates across a wider temperature range (-40°C to 85°C versus 0°C to 70°C). Physical package dimensions differ slightly (0.154" versus 0.209" width), requiring PCB layout verification.

Q: What is the significance of the receiver hysteresis difference?

A: The SN75124NS specifies 500 mV receiver hysteresis, while the AM26C32IDR specifies 60 mV. Hysteresis affects noise immunity and signal transition characteristics. This parameter difference must be evaluated against specific application signal integrity requirements.

Q: Are there package compatibility concerns?

A: Both components use 16-SOIC packaging, but the AM26C32IDR package width is 0.154" (3.90mm) compared to the SN75124NS at 0.209" (5.30mm). While both fit the 16-SOIC footprint category, PCB layout and component placement must be verified to ensure mechanical clearance and thermal management compatibility.

Q: Why is the AM26C32IDR listed as Active while the SN75124NS is Obsolete?

A: Product status reflects manufacturing lifecycle. The SN75124NS has reached end-of-life, with no new production scheduled. The AM26C32IDR represents the current-generation receiver IC from Texas Instruments, ensuring ongoing availability, technical documentation, and supply chain support.

Q: What protocols does the AM26C32IDR support?

A: The AM26C32IDR supports RS422 and RS423 protocols, providing enhanced communication standard compatibility compared to the SN75124NS specification data provided.