SN75174DW Equivalent & Substitute Parts

Part Overview

The SN75174DW 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 production scheduling when original stock becomes unavailable.

Substiute Parts

SN75174DW

Texas InstrumentsIn Stock: 2441SN75174DW Datasheet

Current PartRFQ

SN75174DWR

Texas InstrumentsIn Stock: 1473SN75174DWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN75174DW is determined by strict equivalence across the following critical parameters:

• Protocol specification: RS422/RS485 interface standard
• 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 with identical physical dimensions (0.295", 7.50mm Width)
• Compliance certifications: ROHS3, REACH Unaffected

The SN75174DWR qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The SN75174DWR is the manufacturer-recommended substitute for the SN75174DW. Both components share identical electrical and mechanical specifications, ensuring direct functional equivalence in RS422/RS485 interface applications.

The SN75174DW carries Last Time Buy status, signifying end-of-life production. The SN75174DWR maintains Active product status with ongoing manufacturing and availability. For new designs or production continuity beyond current SN75174DW inventory depletion, the SN75174DWR is the appropriate selection.

Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for industrial and commercial applications. Packaging format differs (Tube versus Cut Tape/Digi-Reel), which may affect procurement logistics but does not impact electrical performance or PCB assembly compatibility.

Frequently Asked Questions (FAQ)

Q: Can SN75174DWR be used as a direct replacement for SN75174DW in existing designs?

A: Yes. The SN75174DWR is electrically and mechanically identical to the SN75174DW. Both components feature 4/0 driver/receiver configuration, RS422/RS485 protocol support, 4.75V ~ 5.25V supply voltage, 0°C ~ 70°C operating temperature range, and 20-SOIC packaging. No design modifications are required.

Q: What is the difference between SN75174DW and SN75174DWR?

A: The primary differences are product status and packaging format. The SN75174DW is Last Time Buy (discontinued), supplied in Tube packaging. The SN75174DWR is Active (current production), supplied in Cut Tape and Digi-Reel formats. Electrical specifications and package dimensions are identical.

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

A: No. Both SN75174DW and SN75174DWR are ROHS3 Compliant and REACH Unaffected. Moisture Sensitivity Level is 1 (Unlimited) for both parts. Regulatory and environmental compliance is equivalent.

Q: Does packaging format affect PCB assembly compatibility?

A: No. Packaging format (Tube, Cut Tape, or Digi-Reel) affects procurement and handling procedures but does not impact electrical performance, pin configuration, or surface mount assembly compatibility. The 20-SOIC package dimensions are identical across all formats.

Q: Why is SN75174DW designated Last Time Buy?

A: Last Time Buy designation indicates Texas Instruments has discontinued production of this part number. The SN75174DWR represents the active production equivalent. Customers requiring this functionality should transition to SN75174DWR for long-term supply assurance.