SN74ACT74MDREP Equivalent & Substitute Parts

Part Overview

The SN74ACT74MDREP is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments, housed in a 14-SOIC surface mount package. This component functions as a Set/Preset and Reset element with complementary outputs, operating at a maximum clock frequency of 210 MHz. The part is currently in active production status and is ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring this specific logic function and electrical performance.

Substiute Parts

SN74ACT74MDREP

Texas InstrumentsIn Stock: 2064SN74ACT74MDREP Datasheet

Current PartRFQ

MC74ACT74DR2G

onsemiIn Stock: 6226MC74ACT74DR2G Datasheet

DirectRFQ

MC74ACT74DG

onsemiIn Stock: 2049MC74ACT74DG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ACT74MDREP is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Base product number: 74ACT74
• Package type: 14-SOIC (0.154", 3.90mm Width)
• Functional type: D-Type flip-flop with 2 elements, 1 bit per element
• Output configuration: Complementary
• Clock frequency: 210 MHz minimum
• Trigger mechanism: Positive edge
• Supply voltage range: 4.5V ~ 5.5V
• Mounting type: Surface mount

Allowable Variations:

• Manufacturer identity (Texas Instruments, onsemi)
• Packaging format (Tape & Reel, Tube)
• Operating temperature range (provided minimum performance is maintained)
• Quiescent current and input capacitance (within component tolerance)
• Propagation delay specifications (at rated conditions)

Substitute parts must maintain identical functional performance, pinout compatibility, and electrical characteristics within the specified supply voltage and operating temperature parameters.

Parameter Comparison

Engineering Selection Recommendations

All three parts listed—SN74ACT74MDREP, MC74ACT74DR2G, and MC74ACT74DG—are active production components with ROHS3 compliance and REACH unaffected status. Selection between these parts is based on the following criteria:

SN74ACT74MDREP (Texas Instruments): Primary choice for applications requiring the extended operating temperature range of -55°C to 125°C. Offers lower quiescent current (2 µA) and lower input capacitance (3 pF), beneficial for power-sensitive or high-frequency applications. Available in Tape & Reel packaging.

MC74ACT74DR2G (onsemi): Direct substitute for standard industrial applications with operating temperature range of -40°C to 85°C. Identical electrical performance at rated conditions. Available in Tape & Reel packaging for automated assembly processes.

MC74ACT74DG (onsemi): Functionally equivalent to MC74ACT74DR2G with identical electrical specifications. Supplied in Tube packaging, suitable for manual assembly or lower-volume procurement scenarios.

Selection should be based on application temperature requirements, packaging format compatibility with assembly processes, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT74DR2G replace SN74ACT74MDREP in all applications?

A: MC74ACT74DR2G is functionally equivalent for applications operating within the -40°C to 85°C temperature range. Applications requiring operation below -40°C or above 85°C must use SN74ACT74MDREP to maintain specified performance.

Q: What is the difference between MC74ACT74DR2G and MC74ACT74DG?

A: Both parts are electrically identical. The primary difference is packaging format: MC74ACT74DR2G is supplied in Tape & Reel format for automated pick-and-place assembly, while MC74ACT74DG is supplied in Tube format for manual handling or lower-volume applications.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 14-SOIC package with identical pinout and functional behavior, ensuring direct mechanical and electrical compatibility.

Q: What are the key electrical differences between these parts?

A: The SN74ACT74MDREP has lower quiescent current (2 µA vs. 4 µA) and lower input capacitance (3 pF vs. 4.5 pF) compared to the onsemi equivalents. All parts maintain identical clock frequency, propagation delay, and output drive capability.

Q: Which part should be selected for high-temperature applications?

A: SN74ACT74MDREP is required for applications exceeding 85°C, as it is rated to 125°C. The onsemi parts (MC74ACT74DR2G and MC74ACT74DG) are limited to 85°C maximum operating temperature.

Q: Are these parts suitable for military or aerospace applications?

A: Selection for military or aerospace applications must be based on specific program requirements and qualification standards. All three parts are ROHS3 compliant and REACH unaffected, but additional screening or certification may be required depending on application specifications.