CD74ACT74ME4 Equivalent & Substitute Parts

Part Overview

The CD74ACT74ME4 is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments in 14-SOIC surface mount packaging. This component functions as a 2-element, 1-bit positive edge-triggered flip-flop with complementary outputs and Set/Reset capability. The CD74ACT74ME4 is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production requirements.

Substiute Parts

CD74ACT74ME4

Texas InstrumentsIn Stock: 741CD74ACT74ME4 Datasheet

Current PartRFQ

CD74ACT74M96

Texas InstrumentsIn Stock: 1786CD74ACT74M96 Datasheet

DirectRFQ

MC74ACT74DR2G

onsemiIn Stock: 6226MC74ACT74DR2G Datasheet

DirectRFQ

MC74ACT74DG

onsemiIn Stock: 2049MC74ACT74DG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74ACT74ME4 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Base product number: 74ACT74
• Package type: 14-SOIC (0.154", 3.90mm Width)
• Function: Dual D-Type Flip-Flop with Set/Reset
• Output type: Complementary
• Trigger type: Positive Edge
• Voltage supply range: 4.5V ~ 5.5V
• Output current capability: 24mA / 24mA minimum
• Mounting type: Surface Mount

Acceptable Parameter Variations:

• Clock frequency: Equal to or greater than 85 MHz
• Propagation delay: Equal to or less than 9.5ns
• Operating temperature range: May be narrower than the original
• Input capacitance: May vary within logic IC tolerances
• Quiescent current: May vary within logic IC tolerances
• Manufacturer: Different manufacturers acceptable if all electrical and mechanical parameters align

The substitute parts CD74ACT74M96, MC74ACT74DR2G, and MC74ACT74DG meet these criteria and are qualified as direct equivalents.

Parameter Comparison

Engineering Selection Recommendations

CD74ACT74M96 (Texas Instruments) This part is the direct Texas Instruments equivalent with identical electrical specifications to the CD74ACT74ME4. It maintains the same clock frequency (85 MHz), propagation delay (9.5ns), and operating temperature range (-55°C ~ 125°C). The CD74ACT74M96 is currently active in production and available in Cut Tape and Digi-Reel packaging formats. Selection of this part preserves the original design specifications without modification.

MC74ACT74DR2G (onsemi) This onsemi-manufactured substitute provides enhanced performance characteristics with a clock frequency of 210 MHz and reduced input capacitance (4.5 pF versus 10 pF). The propagation delay is 11ns, which remains within acceptable tolerance for most applications. The operating temperature range is narrower (-40°C ~ 85°C) compared to the original part. This part is supplied in Tape & Reel packaging and is currently active in production.

MC74ACT74DG (onsemi) This onsemi-manufactured substitute is the manufacturer-recommended equivalent, offering the same enhanced performance as the MC74ACT74DR2G (210 MHz clock frequency, 11ns propagation delay, 4.5 pF input capacitance). The operating temperature range is -40°C ~ 85°C. This part is supplied in Tube packaging and is currently active in production.

All three substitute parts are ROHS3 compliant, carry MSL rating 1 (Unlimited), and are electrically and mechanically compatible with the CD74ACT74ME4 in 14-SOIC surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT74M96 be used as a direct replacement for the CD74ACT74ME4? A: Yes. The CD74ACT74M96 is a direct substitute with identical electrical and mechanical specifications. Both parts are manufactured by Texas Instruments, use the same 14-SOIC package, and share identical clock frequency, propagation delay, and operating temperature range.

Q: What is the difference between the onsemi parts (MC74ACT74DR2G and MC74ACT74DG)? A: Both onsemi parts have identical electrical specifications. The primary difference is packaging format: MC74ACT74DR2G is supplied in Tape & Reel format, while MC74ACT74DG is supplied in Tube format. Selection depends on assembly process requirements and quantity needs.

Q: Are the onsemi substitutes compatible with the original CD74ACT74ME4 design? A: Yes. The onsemi parts meet all mandatory electrical and mechanical parameters. The operating temperature range is narrower (-40°C ~ 85°C versus -55°C ~ 125°C), so applications requiring operation below -40°C or above 85°C must use the Texas Instruments alternatives. The enhanced clock frequency (210 MHz) and reduced propagation delay (11ns) of onsemi parts provide performance margin in most applications.

Q: Does the 14-SOIC package remain the same across all substitute parts? A: Yes. All substitute parts use the 14-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical compatibility with existing PCB layouts and sockets.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts (CD74ACT74M96, MC74ACT74DR2G, and MC74ACT74DG) are ROHS3 compliant with MSL rating 1 (Unlimited), meeting environmental and regulatory requirements equivalent to the original CD74ACT74ME4.

Q: Which substitute part should be selected for new production? A: Selection depends on application requirements and supply chain considerations. For designs requiring the full -55°C ~ 125°C operating range, use CD74ACT74M96. For applications operating within -40°C ~ 85°C, either onsemi part (MC74ACT74DR2G or MC74ACT74DG) is acceptable, with selection based on packaging format preference (Tape & Reel or Tube).