SN75ALS193D Equivalent & Substitute Parts

Part Overview

The SN75ALS193D is a 0/4 Receiver IC for RS422 and RS423 protocols, manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production. Identifying equivalent and substitute parts is essential for ongoing system maintenance, design updates, and supply chain continuity when original inventory becomes unavailable.

Substiute Parts

SN75ALS193D

Texas InstrumentsIn Stock: 1032SN75ALS193D Datasheet

Current PartRFQ

SN75ALS193DR

Texas InstrumentsIn Stock: 4651SN75ALS193DR Datasheet

MFR RecommendedRFQ

ST26C32ABDR

STMicroelectronicsIn Stock: 87612ST26C32ABDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN75ALS193D is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Protocol compatibility: RS422 and RS423 support required
• Receiver configuration: 0/4 (4 receivers, 0 drivers)
• Package type: 16-SOIC surface mount form factor
• Supply voltage range: Must accommodate 4.75V ~ 5.25V operation
• Receiver hysteresis: 120 mV specification
• RoHS3 compliance and MSL Level 1 rating

Identified Substitutes:

1. SN75ALS193DR (Texas Instruments) – Direct manufacturer equivalent with identical electrical specifications and packaging. Product status is Active, ensuring continued availability.

2. ST26C32ABDR (STMicroelectronics) – Cross-manufacturer substitute with compatible RS422/RS423 receiver functionality in 16-SOIC package. Meets all critical substitution parameters with extended operating temperature range and higher data rate capability.

Parameter Comparison

Engineering Selection Recommendations

SN75ALS193DR is the primary substitute for SN75ALS193D. Both parts are manufactured by Texas Instruments with identical electrical specifications, receiver hysteresis, supply voltage range, and operating temperature limits. The SN75ALS193DR maintains Active product status, ensuring long-term availability and supply chain stability. This part is the direct functional equivalent and requires no design modifications.

ST26C32ABDR is a secondary cross-manufacturer substitute suitable for applications where extended operating temperature range (-40°C ~ 85°C) and higher data rate capability (20 Mbps) provide system advantages. The ST26C32ABDR operates within the SN75ALS193D supply voltage specification (4.5V ~ 5.5V encompasses 4.75V ~ 5.25V) and maintains identical receiver configuration and package form factor. The reduced receiver hysteresis (60 mV versus 120 mV) represents a tighter input threshold specification. Both substitute parts carry ROHS3 compliance and MSL Level 1 ratings matching the original component.

Frequently Asked Questions (FAQ)

Q: Can SN75ALS193DR be used as a direct replacement for SN75ALS193D?

A: Yes. The SN75ALS193DR is a direct equivalent with identical electrical specifications, package type, and functional performance. No circuit modifications are required.

Q: What are the key differences between SN75ALS193D and ST26C32ABDR?

A: Both parts share RS422/RS423 receiver functionality, 0/4 configuration, and 16-SOIC packaging. The ST26C32ABDR offers extended operating temperature range (-40°C to 85°C versus 0°C to 70°C), specified data rate (20 Mbps), and lower receiver hysteresis (60 mV versus 120 mV). Supply voltage ranges are compatible within the SN75ALS193D specification window.

Q: Is the 16-SOIC package identical across all three parts?

A: Yes. All three parts use the 16-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical compatibility on PCB layouts designed for the SN75ALS193D.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both SN75ALS193DR and ST26C32ABDR carry ROHS3 compliance and MSL Level 1 ratings, matching the environmental and regulatory status of the original SN75ALS193D.

Q: Why is SN75ALS193D marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production. SN75ALS193DR (Active status) and ST26C32ABDR (Active status) provide continued availability for new designs and system maintenance.