SN75ALS192PWR Equivalent & Substitute Parts

Part Overview

The SN75ALS192PWR is a 4/0 Driver RS422 interface IC manufactured by Texas Instruments in a 16-TSSOP surface mount package. This component is classified as obsolete, indicating it is no longer in active production. Finding equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing manufacturing or repair operations for systems utilizing this driver IC.

Substiute Parts

SN75ALS192PWR

Texas InstrumentsIn Stock: 1160SN75ALS192PWR Datasheet

Current PartRFQ

SN75ALS192DR

Texas InstrumentsIn Stock: 17178SN75ALS192DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75ALS192PWR is determined by the following critical parameters:

• Functional Equivalence: Driver type with 4/0 driver/receiver configuration supporting RS422 protocol
• Electrical Compatibility: Supply voltage range of 4.75V ~ 5.25V and operating temperature range of 0°C ~ 70°C
• Interface Protocol: RS422 communication standard
• Packaging Compatibility: Surface mount technology with 16-pin configuration
• Compliance Requirements: ROHS3 compliance and MSL rating of 1

The SN75ALS192DR qualifies as a direct substitute based on these parameters. Both parts share the same base product number (75ALS192), identical electrical specifications, equivalent pin counts, and compatible surface mount packaging. The SN75ALS192DR is currently in active production status, providing supply continuity for the obsolete SN75ALS192PWR.

Parameter Comparison

Engineering Selection Recommendations

The SN75ALS192DR is the recommended substitute for the obsolete SN75ALS192PWR based on the following engineering criteria:

• Functional Compatibility: Both parts share identical driver/receiver configuration (4/0), protocol support (RS422), and electrical specifications (supply voltage and operating temperature range).
• Active Production Status: The SN75ALS192DR is in active production, ensuring long-term availability and supply chain reliability compared to the obsolete SN75ALS192PWR.
• Regulatory Compliance: Both parts maintain ROHS3 compliance and identical MSL ratings, meeting environmental and reliability standards.
• Base Product Alignment: Both parts are derived from the same base product number (75ALS192), confirming functional equivalence at the core design level.

Package Consideration: The substitute part uses a 16-SOIC package (0.154", 3.90mm Width) instead of the original 16-TSSOP package (0.173", 4.40mm Width). PCB layout modifications may be required to accommodate the different package footprint.

Frequently Asked Questions (FAQ)

Q: Can the SN75ALS192DR directly replace the SN75ALS192PWR without circuit modifications?

A: The SN75ALS192DR is functionally equivalent in terms of electrical performance and pin configuration. However, the package footprint differs (16-SOIC versus 16-TSSOP), requiring PCB layout adjustments. Pin-to-pin compatibility must be verified against the specific pinout documentation for both packages.

Q: What is the primary reason for substitution?

A: The SN75ALS192PWR is obsolete and no longer manufactured. The SN75ALS192DR provides functional equivalence while maintaining active production status and supply availability.

Q: Are there any electrical performance differences between these parts?

A: Both parts operate within identical supply voltage ranges (4.75V ~ 5.25V) and temperature ranges (0°C ~ 70°C). The SN75ALS192DR supports both RS422 and RS485 protocols, while the SN75ALS192PWR is specified for RS422. This expanded protocol support in the substitute does not affect RS422 operation.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SN75ALS192PWR and SN75ALS192DR are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting equivalent environmental and reliability requirements.

Q: What package considerations should be addressed during substitution?

A: The original part uses a 16-TSSOP package while the substitute uses a 16-SOIC package. These packages have different footprints and pin spacing. PCB redesign or adapter solutions may be necessary depending on the application and available board space.