CD74ACT08ME4 Equivalent & Substitute Parts

Part Overview

The CD74ACT08ME4 is a 4-channel 2-input AND gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics, making substitute parts necessary for ongoing production and maintenance applications. The 74ACT08 logic family provides standard AND gate functionality with ACT-level speed and power characteristics suitable for digital logic circuits requiring 4.5V to 5.5V supply operation.

Substiute Parts

CD74ACT08ME4

Texas InstrumentsIn Stock: 1017CD74ACT08ME4 Datasheet

Current PartRFQ

CD74ACT08M96

Texas InstrumentsIn Stock: 2657CD74ACT08M96 Datasheet

DirectRFQ

CD74ACT08M

Harris CorporationIn Stock: 1806CD74ACT08M Datasheet

MFR RecommendedRFQ

74ACT08SC

onsemiIn Stock: 152074ACT08SC Datasheet

MFR RecommendedRFQ

74ACT08SCX

onsemiIn Stock: 1575374ACT08SCX Datasheet

MFR RecommendedRFQ

MC74ACT08DG

onsemiIn Stock: 3657MC74ACT08DG Datasheet

MFR RecommendedRFQ

MC74ACT08DR2G

onsemiIn Stock: 40318MC74ACT08DR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74ACT08ME4 is determined by the following critical parameters:

• Logic Function: All substitutes must be 4-channel 2-input AND gates (74ACT08 base product number)
• Package Type: All substitutes must use 14-SOIC surface mount packaging with identical physical dimensions (0.154", 3.90mm Width)
• Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), input/output logic levels, and quiescent current must match or be compatible
• Propagation Delay: Maximum propagation delay specifications determine timing compatibility in digital circuits
• Operating Temperature Range: The original part operates -55°C ~ 125°C; substitutes with narrower ranges (-40°C ~ 85°C) are acceptable for applications not requiring full military temperature range
• Compliance & Status: RoHS3 compliance and active product status are preferred for new designs

Substitutes are grouped by manufacturer and packaging configuration while maintaining electrical equivalence within the 74ACT08 logic family.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Highest Compatibility): CD74ACT08M96 (Texas Instruments, Active)

The CD74ACT08M96 is the direct equivalent from the original manufacturer with active product status. It maintains identical electrical specifications including the 12.9ns propagation delay and full -55°C ~ 125°C operating temperature range. The only difference is packaging format (Tape & Reel vs. Tube), which does not affect electrical performance. ROHS3 compliance is maintained.

Secondary Substitutes (onsemi, Active Status): 74ACT08SCX, MC74ACT08DR2G

Both onsemi parts are actively manufactured with ROHS3 compliance. The 74ACT08SCX offers the highest inventory availability (15691 Pcs) and Cut Tape packaging for flexible quantity requirements. The MC74ACT08DR2G provides Tape & Reel packaging with substantial inventory (40300 Pcs). Both exhibit improved propagation delay (9ns vs. 12.9ns) but operate within a narrower temperature range (-40°C ~ 85°C). These are suitable for applications not requiring military temperature specifications.

Alternative (onsemi, Active Status): 74ACT08SC, MC74ACT08DG

Both parts provide equivalent electrical performance to the onsemi alternatives above with active product status and ROHS3 compliance. Selection between these and the SCX/DR2G variants depends on packaging preference (Tube vs. Tape & Reel).

Not Recommended: CD74ACT08M (Harris Corporation, Obsolete)

This part is obsolete and RoHS non-compliant, making it unsuitable for new designs or applications requiring regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can I use 74ACT08SCX as a direct replacement for CD74ACT08ME4?

A: Yes. Both parts are 4-channel 2-input AND gates in 14-SOIC packaging with identical logic function, supply voltage range (4.5V ~ 5.5V), input/output logic levels, and quiescent current specifications. The 74ACT08SCX operates within -40°C ~ 85°C, which is narrower than the original -55°C ~ 125°C range. If your application requires the full military temperature range, use CD74ACT08M96 instead.

Q: What is the difference between CD74ACT08M96 and MC74ACT08DR2G?

A: Both are functionally equivalent 74ACT08 AND gates. CD74ACT08M96 is manufactured by Texas Instruments with 12.9ns propagation delay and -55°C ~ 125°C operating range. MC74ACT08DR2G is manufactured by onsemi with 9ns propagation delay and -40°C ~ 85°C operating range. The onsemi part offers faster switching but narrower temperature specifications. Both use Tape & Reel packaging and are ROHS3 compliant.

Q: Does packaging format (Tube vs. Tape & Reel) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly processes. Electrical specifications and performance are identical regardless of whether the part is supplied in Tube or Tape & Reel format.

Q: Why does 74ACT08SCX have better propagation delay (9ns) than CD74ACT08ME4 (12.9ns)?

A: Propagation delay specifications reflect manufacturing process improvements and characterization at the time of production. The 9ns specification from onsemi is within the same logic family and maintains full compatibility. Faster propagation delay does not create compatibility issues in circuits designed for the original 12.9ns specification.

Q: Is CD74ACT08M from Harris Corporation a viable substitute?

A: No. Although functionally equivalent, this part is obsolete and RoHS non-compliant. It is not suitable for new designs or applications requiring regulatory compliance with current environmental standards.

Q: Which substitute has the best inventory availability?

A: MC74ACT08DR2G from onsemi has the highest inventory (40300 Pcs), followed by 74ACT08SCX (15691 Pcs). Both are active products with ROHS3 compliance and suitable for high-volume applications.