SN74S86D Equivalent & Substitute Parts

Part Overview

The SN74S86D is a 4-channel XOR (Exclusive OR) logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The SN74S86D operates within a 4.75V to 5.25V supply voltage range and is suitable for digital logic applications requiring exclusive OR gate functionality.

Substiute Parts

SN74S86D

Texas InstrumentsIn Stock: 926SN74S86D Datasheet

Current PartRFQ

SN74AS86AD

Texas InstrumentsIn Stock: 751SN74AS86AD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74S86D is determined by the following critical parameters:

• Logic Function: Both parts must implement 4-channel, 2-input XOR gate functionality
• Package Compatibility: Both parts must use 14-SOIC surface mount packaging with identical physical dimensions (0.154", 3.90mm Width)
• Electrical Characteristics: Supply voltage range, input logic levels, and operating temperature must be compatible with the original design
• Pin Configuration: Pin count and arrangement must match the 14-SOIC standard for XOR gate ICs

The SN74AS86AD qualifies as a direct substitute based on these parameters. Both parts share identical logic function, package type, pin configuration, and operating temperature range. The SN74AS86AD represents an active product status alternative to the obsolete SN74S86D.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS86AD is a qualified substitute for the SN74S86D based on the following factors:

• Product Status: The SN74AS86AD maintains active product status, ensuring continued availability and supply chain reliability compared to the obsolete SN74S86D
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements
• Functional Equivalence: Identical logic function, pin configuration, and package type ensure direct replacement capability without circuit redesign
• Performance Enhancement: The SN74AS86AD provides improved propagation delay characteristics (7.5ns versus 10.5ns) and expanded supply voltage tolerance (4.5V ~ 5.5V versus 4.75V ~ 5.25V)

Frequently Asked Questions (FAQ)

Q: Can the SN74AS86AD directly replace the SN74S86D without circuit modifications?

A: Yes. Both parts share identical pin configuration, package type (14-SOIC), logic function (4-channel 2-input XOR), and operating temperature range. Direct substitution is possible without circuit redesign.

Q: What are the key differences between these parts?

A: The SN74AS86AD offers faster propagation delay (7.5ns versus 10.5ns at 5V) and a wider supply voltage range (4.5V ~ 5.5V versus 4.75V ~ 5.25V). The SN74AS86AD also maintains active product status, whereas the SN74S86D is obsolete.

Q: Are there any compatibility concerns with the 14-SOIC package?

A: No. Both parts use identical 14-SOIC packaging with matching physical dimensions (0.154", 3.90mm Width). PCB footprints and assembly processes remain unchanged.

Q: Do both parts meet current compliance standards?

A: Yes. Both the SN74S86D and SN74AS86AD are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which part should be selected for new designs?

A: The SN74AS86AD should be selected for new designs due to its active product status, improved performance characteristics, and assured long-term availability.