SN75ALS174ADW Equivalent & Substitute Parts

Part Overview

The SN75ALS174ADW is a 4/0 Driver RS422/RS485 interface IC manufactured by Texas Instruments in a 20-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. Identifying equivalent substitute parts is essential for design continuity, long-term supply chain planning, and ensuring project viability beyond current stock availability.

Substiute Parts

SN75ALS174ADW

Texas InstrumentsIn Stock: 2313SN75ALS174ADW Datasheet

Current PartRFQ

SN75ALS174ADWR

Texas InstrumentsIn Stock: 1977SN75ALS174ADWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN75ALS174ADW is determined by strict equivalence across the following critical parameters:

• Protocol support: RS422 and RS485 compatibility
• Driver/Receiver configuration: 4/0 (4 drivers, 0 receivers)
• Supply voltage range: 4.75V ~ 5.25V
• Operating temperature range: 0°C ~ 70°C
• Package type: 20-SOIC surface mount
• Physical dimensions: 0.295" × 7.50mm width
• Regulatory compliance: ROHS3, REACH Unaffected

The identified substitute part maintains identical electrical specifications and mechanical compatibility, differing only in packaging format (Tube vs. Tape & Reel) and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

The SN75ALS174ADWR is a direct functional equivalent to the SN75ALS174ADW. Both parts are manufactured by Texas Instruments and share identical electrical and mechanical specifications. The primary distinction is product lifecycle status: the SN75ALS174ADW is Last Time Buy with limited inventory, while the SN75ALS174ADWR maintains Active status with ongoing availability.

For new designs or long-term production requirements, the SN75ALS174ADWR is the appropriate selection. Both parts maintain ROHS3 compliance and identical regulatory certifications (REACH Unaffected, ECCN EAR99). The packaging format difference (Tube vs. Tape & Reel) does not affect electrical performance or mechanical compatibility on the PCB.

Frequently Asked Questions (FAQ)

Q: Can SN75ALS174ADWR be used as a direct replacement for SN75ALS174ADW?

A: Yes. Both parts are electrically and mechanically identical. They share the same 20-SOIC package, supply voltage range (4.75V ~ 5.25V), operating temperature range (0°C ~ 70°C), and RS422/RS485 protocol support with 4/0 driver/receiver configuration.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging (SN75ALS174ADW) is used for lower-volume orders and manual handling. Tape & Reel packaging (SN75ALS174ADWR) is designed for automated assembly equipment. Both formats contain the same component with identical performance characteristics.

Q: Why is SN75ALS174ADW marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of this part number. Existing inventory is available for purchase, but no future manufacturing runs are planned. The SN75ALS174ADWR (Active status) is the recommended long-term alternative.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH Unaffected, and carry identical ECCN (EAR99) and HTSUS classifications.

Q: Can I mix SN75ALS174ADW and SN75ALS174ADWR in the same production batch?

A: Yes. Since both parts are functionally identical with the same electrical specifications and package dimensions, they can be used interchangeably in the same circuit design and PCB layout.