SN74ACT74DRE4 Equivalent & Substitute Parts

Part Overview

The SN74ACT74DRE4 is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments in a 14-SOIC surface mount package. This device functions as a 2-element D-type flip-flop with complementary outputs, set/preset and reset capabilities, and positive edge triggering. The part is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

SN74ACT74DRE4

Texas InstrumentsIn Stock: 946SN74ACT74DRE4 Datasheet

Current PartRFQ

SN74ACT74DR

Texas InstrumentsIn Stock: 2228SN74ACT74DR Datasheet

Parametric EquivalentRFQ

MC74ACT74DR2G

onsemiIn Stock: 6226MC74ACT74DR2G Datasheet

DirectRFQ

MC74ACT74DG

onsemiIn Stock: 2049MC74ACT74DG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ACT74DRE4 is determined by strict equivalence across the following critical parameters:

Functional Parameters:

• Series: 74ACT (logic family)
• Type: D-Type Flip-Flop
• Number of Elements: 2
• Number of Bits per Element: 1
• Output Type: Complementary
• Function: Set (Preset) and Reset
• Trigger Type: Positive Edge
• Clock Frequency: 210 MHz

Electrical Parameters:

• Voltage Supply Range: 4.5V to 5.5V
• Operating Temperature: -40°C to 85°C

Physical Parameters:

• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

All substitute parts listed maintain identical functional, electrical, and physical specifications. Variations in propagation delay, quiescent current, and input capacitance are within acceptable tolerance ranges for the 74ACT logic family and do not affect pin-level compatibility or circuit operation.

Parameter Comparison

Engineering Selection Recommendations

SN74ACT74DR (Texas Instruments): This part is the parametric equivalent manufactured by the original supplier. It maintains identical electrical and functional specifications to the SN74ACT74DRE4 with the exception of improved propagation delay (7.5ns versus 11ns). Product status is active, ensuring long-term availability and supply chain stability. This part is recommended as the primary substitute when Texas Instruments sourcing is preferred.

MC74ACT74DR2G (onsemi): This part is a direct manufacturer equivalent supplied in Tape & Reel packaging. It maintains all critical functional and electrical parameters with ROHS3 compliance and unlimited moisture sensitivity rating. Product status is active. This part is suitable for high-volume production environments requiring reel packaging.

MC74ACT74DG (onsemi): This part is the manufacturer-recommended equivalent supplied in Tube packaging. It maintains all critical functional and electrical parameters with ROHS3 compliance and unlimited moisture sensitivity rating. Product status is active. This part is suitable for lower-volume applications or manual assembly environments.

All substitute parts are pin-compatible and functionally interchangeable with the SN74ACT74DRE4 in 14-SOIC surface mount applications operating within the specified voltage and temperature ranges.

Frequently Asked Questions (FAQ)

Q: Are these substitute parts pin-compatible with the SN74ACT74DRE4?

A: Yes. All listed substitute parts are 14-SOIC surface mount packages with identical pinout and functional behavior. Direct PCB substitution is possible without circuit modification.

Q: What is the difference between the SN74ACT74DR and the onsemi alternatives?

A: The SN74ACT74DR is manufactured by Texas Instruments and offers improved propagation delay (7.5ns versus 11ns). The onsemi parts (MC74ACT74DR2G and MC74ACT74DG) are functionally equivalent but differ in packaging format (Tape & Reel versus Tube) and have slightly higher quiescent current (4 µA versus 2 µA) and input capacitance (4.5 pF versus 3 pF). These differences do not affect circuit compatibility.

Q: Can I use these parts interchangeably in my design?

A: Yes, within the specified operating conditions. All parts operate across the same voltage supply range (4.5V to 5.5V) and temperature range (-40°C to 85°C). The 74ACT logic family ensures consistent logic levels and timing behavior across all manufacturers.

Q: What packaging options are available?

A: The SN74ACT74DR is available in Cut Tape and Digi-Reel packaging. The MC74ACT74DR2G is supplied in Tape & Reel format for automated assembly. The MC74ACT74DG is supplied in Tube format for manual handling and lower-volume applications.

Q: Are all parts RoHS compliant?

A: Yes. All listed parts are ROHS3 compliant with Moisture Sensitivity Level 1 (unlimited), meeting current environmental and reliability standards.

Q: Why is the SN74ACT74DRE4 discontinued?

A: The SN74ACT74DRE4 has been discontinued at DiGi Electronics. Active alternatives from both Texas Instruments and onsemi ensure continued design support and component availability for 74ACT dual D-type flip-flop applications.