SN75158D Equivalent & Substitute Parts

Part Overview

The SN75158D is a 2/0 Driver RS422/RS485 interface IC manufactured by Texas Instruments in an 8-SOIC surface mount package. This component is classified as Last Time Buy, indicating end-of-life status with limited availability. The SN75158D operates within a supply voltage range of 4.75V to 5.25V and supports industrial communication protocols RS422 and RS485. Due to its Last Time Buy status, identifying functionally equivalent substitute parts is essential for design continuity and long-term supply chain planning.

Substiute Parts

SN75158D

Texas InstrumentsIn Stock: 2539SN75158D Datasheet

Current PartRFQ

SN75158DR

Texas InstrumentsIn Stock: 5701SN75158DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN75158D is determined by strict equivalence across the following critical parameters:

• Protocol support: RS422 and RS485 compatibility
• Driver/receiver configuration: 2/0 (2 drivers, 0 receivers)
• Supply voltage range: 4.75V to 5.25V
• Operating temperature range: 0°C to 70°C
• Package type: 8-SOIC surface mount
• Electrical and mechanical pin compatibility
• Regulatory compliance: ROHS3, REACH Unaffected

The SN75158DR qualifies as a direct substitute based on identical electrical specifications, protocol support, and package configuration. The primary distinction is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The SN75158DR is the manufacturer-recommended substitute for the SN75158D. Both components share identical electrical specifications, protocol support, and package configuration. The SN75158DR maintains Active product status, ensuring continued availability and supply chain stability compared to the Last Time Buy status of the SN75158D.

Selection between these parts should be based on:

• Availability requirements: SN75158DR offers superior long-term availability
• Packaging format compatibility: SN75158D uses Tube packaging; SN75158DR uses Cut Tape and Digi-Reel formats
• Regulatory compliance: Both meet ROHS3 and REACH requirements
• Inventory planning: SN75158DR has higher current stock levels

Frequently Asked Questions (FAQ)

Q: Can the SN75158DR directly replace the SN75158D in existing designs?

A: Yes. The SN75158DR is electrically and mechanically equivalent to the SN75158D. Both components support RS422/RS485 protocols, operate at 4.75V to 5.25V, and use identical 8-SOIC packaging. Pin configuration and functional behavior are identical.

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

A: Tube packaging (SN75158D) provides components in plastic tubes for manual handling and smaller quantity orders. Cut Tape and Digi-Reel packaging (SN75158DR) is optimized for automated assembly processes and higher-volume production. Both formats contain the same component with identical electrical characteristics.

Q: Why is the SN75158D marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments is discontinuing this part number. The SN75158DR, with Active status, represents the current production equivalent and should be used for new designs and long-term supply planning.

Q: Are there any temperature or voltage derating considerations between these parts?

A: No. Both the SN75158D and SN75158DR operate identically across the specified temperature range of 0°C to 70°C and supply voltage range of 4.75V to 5.25V.

Q: What is the Moisture Sensitivity Level (MSL) significance?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These components can be stored indefinitely without special humidity controls and do not require baking before reflow soldering.