CD74ACT74M Equivalent & Substitute Parts

Part Overview

The CD74ACT74M is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments in a 14-SOIC surface mount package. This component functions as a 2-element D-type flip-flop with complementary outputs, set/preset and reset capabilities, and positive edge triggering. The CD74ACT74M is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production requirements. Active alternatives from Texas Instruments and onsemi maintain functional compatibility within the 74ACT logic family.

Substiute Parts

CD74ACT74M

Texas InstrumentsIn Stock: 1323CD74ACT74M 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 of the CD74ACT74M is determined by strict adherence to the following electrical and mechanical parameters:

Critical Compatibility Parameters:

• Logic family: 74ACT series
• Package type: 14-SOIC (0.154", 3.90mm Width)
• Function: Dual D-type flip-flop with set/preset and reset
• Output configuration: Complementary outputs
• Trigger mechanism: Positive edge
• Supply voltage range: 4.5V – 5.5V
• Output drive capability: 24 mA high and low
• Mounting: Surface mount

All substitute parts listed maintain these core parameters. Variations in clock frequency, propagation delay, input capacitance, and operating temperature range are documented in the parameter comparison table and do not prevent functional substitution within the specified electrical constraints.

Parameter Comparison

Engineering Selection Recommendations

CD74ACT74M96 (Texas Instruments) This part is the direct Texas Instruments equivalent with identical electrical specifications to the discontinued CD74ACT74M. It maintains the same clock frequency (85 MHz), propagation delay (9.5 ns), input capacitance (10 pF), and extended operating temperature range (-55°C to 125°C). The CD74ACT74M96 is active and available in Cut Tape and Digi-Reel packaging formats. Selection of this part preserves all original design parameters without modification.

MC74ACT74DR2G (onsemi, Tape & Reel) This onsemi alternative operates within the same supply voltage and output drive specifications. It features enhanced clock frequency (210 MHz) and reduced input capacitance (4.5 pF) compared to the original part. The operating temperature range is narrower (-40°C to 85°C). This part is suitable for applications where the extended low-temperature performance of the original is not required and where higher clock frequency capability provides design margin.

MC74ACT74DG (onsemi, Tube) This onsemi part is manufacturer-recommended and shares identical electrical characteristics with the MC74ACT74DR2G variant. It is supplied in tube packaging and is active with full availability. Selection between MC74ACT74DR2G and MC74ACT74DG depends on packaging and quantity requirements for production workflows.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and 14-SOIC package compatibility. Product status is active for all alternatives, ensuring long-term supply availability.

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT74M96 be used as a direct replacement for the discontinued CD74ACT74M? A: Yes. The CD74ACT74M96 maintains identical electrical specifications including clock frequency (85 MHz), propagation delay (9.5 ns), input capacitance (10 pF), and operating temperature range (-55°C to 125°C). No circuit modifications are required.

Q: What are the differences between the Texas Instruments and onsemi alternatives? A: The onsemi parts (MC74ACT74DR2G and MC74ACT74DG) feature higher clock frequency (210 MHz) and lower input capacitance (4.5 pF) but operate over a narrower temperature range (-40°C to 85°C) compared to the Texas Instruments alternatives. All parts maintain identical supply voltage range, output drive capability, and package dimensions.

Q: Are all substitute parts compatible with the original 14-SOIC footprint? A: Yes. All substitute parts use the 14-SOIC (0.154", 3.90mm Width) package and are pin-compatible surface mount devices. PCB layout and footprint modifications are not required.

Q: What packaging options are available for each substitute part? A: CD74ACT74M96 is available in Cut Tape (CT) and Digi-Reel packaging. MC74ACT74DR2G is supplied in Tape & Reel (TR) format. MC74ACT74DG is supplied in tube packaging. Selection depends on production volume and assembly process requirements.

Q: Do all parts meet the same compliance standards? A: Yes. All substitute parts are ROHS3 compliant, carry MSL Level 1 rating (unlimited moisture sensitivity), and are REACH unaffected. Compliance certifications are equivalent across all alternatives.

Q: Which substitute part should be selected for applications requiring extended temperature operation? A: The CD74ACT74M96 maintains the original operating range of -55°C to 125°C. The onsemi alternatives (MC74ACT74DR2G and MC74ACT74DG) operate from -40°C to 85°C and are suitable only for applications within this narrower range.

Q: Are there any performance differences that affect circuit operation? A: The onsemi parts feature faster clock frequency (210 MHz vs. 85 MHz) and lower input capacitance (4.5 pF vs. 10 pF), which provide improved performance margin. Propagation delay is slightly higher (11 ns vs. 9.5 ns) but remains within acceptable timing specifications for most 74ACT logic applications.