SN74LS86AD Equivalent & Substitute Parts

Part Overview

The SN74LS86AD is a 4-channel XOR (Exclusive OR) logic gate IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This component is discontinued at DiGi Electronics, making substitute parts necessary for ongoing production and maintenance applications. The XOR logic function remains critical in digital circuit design for parity generation, binary comparison, and arithmetic operations. Identifying compatible alternatives ensures design continuity and supply chain reliability.

Substiute Parts

SN74LS86AD

Texas InstrumentsIn Stock: 3766SN74LS86AD Datasheet

Current PartRFQ

SN74LS86ADR

Texas InstrumentsIn Stock: 2908SN74LS86ADR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS86AD is determined by strict equivalence across the following parameters:

• Logic function: XOR (Exclusive OR) with identical 4-channel, 2-input configuration
• Electrical specifications: Supply voltage range 4.75V ~ 5.25V, propagation delay 30ns @ 5V with 15pF load, input logic levels (Low: 0.8V, High: 2V), output current ratings (High: 400µA, Low: 8mA)
• Package format: 14-SOIC surface mount with identical 0.154" (3.90mm) width
• Compliance: ROHS3 compliant, MSL Level 1, REACH unaffected status
• Series designation: 74LS logic family

The SN74LS86ADR qualifies as a direct substitute based on identical electrical performance, package specifications, and compliance certifications. The primary distinction is packaging format (Cut Tape & Digi-Reel versus Tube) and product status (Active versus Discontinued).

Parameter Comparison

Engineering Selection Recommendations

The SN74LS86ADR is the direct substitute for the SN74LS86AD. Both components are manufactured by Texas Instruments with identical electrical characteristics, pin configuration, and package dimensions. The SN74LS86ADR maintains active product status, ensuring continued availability and supply chain stability compared to the discontinued SN74LS86AD.

Both parts meet ROHS3 compliance and REACH requirements, making them suitable for applications subject to environmental regulations. The MSL Level 1 rating indicates unlimited shelf life under standard storage conditions.

Selection between these parts should be based on packaging requirements: the SN74LS86AD is supplied in Tube format, while the SN74LS86ADR is available in Cut Tape and Digi-Reel formats. For new designs or production runs, the SN74LS86ADR is recommended due to its active status and standard tape-and-reel packaging for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS86ADR replace the SN74LS86AD in existing designs?

A: Yes. Both components are electrically identical with matching pin configurations, supply voltage requirements, propagation delays, and input/output specifications. The 14-SOIC package dimensions are identical, allowing direct PCB footprint compatibility.

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

A: Tube packaging supplies components in plastic tubes for manual handling and small-quantity applications. Cut Tape and Digi-Reel packaging provides components on continuous tape for automated pick-and-place assembly. Both formats contain the same component with identical electrical performance.

Q: Are there any compliance differences between these parts?

A: No. Both the SN74LS86AD and SN74LS86ADR carry identical ROHS3 compliance, REACH unaffected status, and MSL Level 1 ratings. They meet the same environmental and regulatory requirements.

Q: Why is the SN74LS86AD discontinued?

A: Product discontinuation at DiGi Electronics reflects supply chain decisions and market availability. The SN74LS86ADR remains in active production, providing a direct alternative with no functional or performance differences.

Q: What are the critical parameters for XOR gate substitution?

A: Logic function (4-channel, 2-input XOR), supply voltage range (4.75V ~ 5.25V), propagation delay (30ns @ 5V, 15pF), package format (14-SOIC), and mounting type (Surface Mount) must remain constant for functional equivalence.