MC74ACT86DG Equivalent & Substitute Parts

Part Overview

The MC74ACT86DG is a 4-channel XOR (Exclusive OR) logic gate IC in 14-SOIC surface mount packaging, manufactured by onsemi. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The MC74ACT86DG operates within the 74ACT logic family standard, which defines compatible electrical and mechanical parameters across multiple manufacturers.

Substiute Parts

MC74ACT86DG

onsemiIn Stock: 1275MC74ACT86DG Datasheet

Current PartRFQ

SN74ACT86DR

Texas InstrumentsIn Stock: 2383SN74ACT86DR Datasheet

DirectRFQ

CD74ACT86M

Harris CorporationIn Stock: 1403CD74ACT86M Datasheet

SimilarRFQ

CD74ACT86M96

Harris CorporationIn Stock: 3074CD74ACT86M96 Datasheet

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CD74ACT86MDREP

Texas InstrumentsIn Stock: 785CD74ACT86MDREP Datasheet

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SN74ACT86NSR

Texas InstrumentsIn Stock: 10529SN74ACT86NSR Datasheet

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SN74ACT86D

Texas InstrumentsIn Stock: 3355SN74ACT86D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MC74ACT86DG is determined by strict adherence to the 74ACT logic family standard. All substitute parts must maintain identical electrical specifications: 4.5V ~ 5.5V supply voltage, 4 µA maximum quiescent current, 24mA output drive capability, and identical input logic thresholds. The package type and physical dimensions are critical mechanical parameters for PCB compatibility.

Substitute parts are grouped into two categories based on allowed parameter variations:

Direct Substitutes (Identical Electrical & Mechanical Parameters): Parts with 9.5ns maximum propagation delay at 5V and 50pF load, operating temperature -40°C ~ 85°C, and 14-SOIC (0.154", 3.90mm) packaging. These parts are electrically and mechanically interchangeable with the MC74ACT86DG.

Similar Substitutes (Extended Operating Temperature & Propagation Delay): Parts with 14.6ns maximum propagation delay at 5V and 50pF load and extended operating temperature range (-55°C ~ 125°C). These parts maintain all core electrical parameters but differ in performance characteristics and temperature rating. Physical packaging remains 14-SOIC surface mount.

Package Variant Substitute (Different Physical Dimensions): The SN74ACT86NSR uses 14-SO packaging (0.209", 5.30mm width) instead of the standard 14-SOIC (0.154", 3.90mm). This variant requires PCB layout verification before substitution.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Choice): The SN74ACT86DR from Texas Instruments is the preferred substitute. It maintains identical electrical performance (9.5ns propagation delay) and operating temperature range (-40°C ~ 85°C) as the MC74ACT86DG, with matching 14-SOIC (0.154", 3.90mm) packaging. The part is currently active in production and ROHS3 compliant, ensuring long-term availability and regulatory compliance.

For Extended Temperature Applications: The CD74ACT86MDREP from Texas Instruments provides extended operating temperature range (-55°C ~ 125°C) while maintaining ROHS3 compliance and active product status. The 14.6ns propagation delay represents a 5.1ns increase from the MC74ACT86DG specification. This part is suitable only for applications where the extended temperature range justifies the performance trade-off.

For Package Variant Applications: The SN74ACT86NSR offers identical electrical performance to the MC74ACT86DG but uses 14-SO packaging with 0.209" width instead of 0.154". This part requires PCB layout verification to confirm footprint compatibility before implementation.

Parts to Avoid: CD74ACT86M and CD74ACT86M96 from Harris Corporation are obsolete and RoHS non-compliant. SN74ACT86D from Texas Instruments is discontinued at DiGi Electronics and should not be selected for new designs.

Frequently Asked Questions (FAQ)

Q: Can I use SN74ACT86DR as a direct replacement for MC74ACT86DG? A: Yes. The SN74ACT86DR maintains identical electrical specifications (9.5ns propagation delay, -40°C ~ 85°C operating range) and physical packaging (14-SOIC, 0.154" width). No circuit modifications are required.

Q: What is the difference between the 9.5ns and 14.6ns propagation delay variants? A: The 9.5ns specification applies to SN74ACT86DR and SN74ACT86D. The 14.6ns specification applies to CD74ACT86MDREP, CD74ACT86M, and CD74ACT86M96. The 5.1ns difference reflects different manufacturing processes and extended temperature rating. For timing-critical applications, verify that 14.6ns delay meets system requirements before substitution.

Q: Is the SN74ACT86NSR compatible with MC74ACT86DG? A: Electrically yes, mechanically conditional. The SN74ACT86NSR uses 14-SO packaging (0.209" width) versus the standard 14-SOIC (0.154" width). PCB footprint verification is required before substitution.

Q: Why are CD74ACT86M and CD74ACT86M96 not recommended? A: Both parts are obsolete and RoHS non-compliant. New designs should not use these parts due to supply uncertainty and regulatory non-compliance.

Q: Can I use CD74ACT86MDREP in place of MC74ACT86DG? A: Conditional substitution only. The CD74ACT86MDREP is electrically compatible but has 14.6ns propagation delay (versus 9.5ns) and extended operating temperature (-55°C ~ 125°C versus -40°C ~ 85°C). Use only if your application tolerates the slower propagation delay and benefits from the extended temperature range.

Q: What does ROHS3 compliance mean for this part? A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All recommended substitutes are ROHS3 compliant except CD74ACT86M and CD74ACT86M96.

Q: Are all substitute parts available in the same packaging options? A: No. SN74ACT86DR is available in Cut Tape (CT) & Digi-Reel packaging. SN74ACT86NSR is available in Tape & Reel (TR). CD74ACT86MDREP is available in Tape & Reel (TR). Verify packaging availability with your supplier before procurement.