SN74F74DRG4 Equivalent & Substitute Parts

Part Overview

The SN74F74DRG4 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 2-element D-type flip-flop with complementary outputs, set/preset and reset capabilities, and positive edge triggering. The SN74F74DRG4 is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and production continuity.

Substiute Parts

SN74F74DRG4

Texas InstrumentsIn Stock: 1151SN74F74DRG4 Datasheet

Current PartRFQ

SN74F74DR

Texas InstrumentsIn Stock: 8068SN74F74DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74F74DRG4 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Criteria:

• Base product number (74F74 logic family)
• Functional architecture (dual D-type flip-flop, 2 elements, 1 bit per element)
• Output configuration (complementary outputs)
• Control functions (set/preset and reset capability)
• Trigger mechanism (positive edge triggering)
• Clock frequency specification (145 MHz)
• Supply voltage range (4.5V ~ 5.5V)
• Package type (14-SOIC surface mount)
• Pin count and pinout compatibility

The SN74F74DR qualifies as a direct manufacturer-recommended substitute based on identical functional specifications, electrical characteristics, and package configuration. The primary distinction is product status and packaging format availability.

Parameter Comparison

Engineering Selection Recommendations

The SN74F74DR is the manufacturer-recommended substitute for the discontinued SN74F74DRG4. Both components maintain identical functional specifications, electrical performance parameters, and package configurations. The SN74F74DR offers superior propagation delay performance (5.8 ns versus 8 ns), providing enhanced timing margins in digital logic applications.

Selection of the SN74F74DR is supported by:

• Active product status ensuring long-term availability and supply chain continuity
• ROHS3 compliance and REACH unaffected status matching the original part
• Identical MSL rating (1 - Unlimited) for moisture sensitivity
• Equivalent EAR99 export classification and HTSUS coding
• Identical pinout and 14-SOIC package footprint compatibility

Frequently Asked Questions (FAQ)

Q: Can the SN74F74DR be used as a direct replacement for the SN74F74DRG4?

A: Yes. Both parts share identical functional architecture, electrical specifications, supply voltage requirements, operating temperature range, and 14-SOIC package configuration. The SN74F74DR is the manufacturer-recommended substitute.

Q: What is the difference between SN74F74DRG4 and SN74F74DR?

A: The primary differences are product status and packaging format. The SN74F74DRG4 is discontinued and supplied in Digi-Reel format, while the SN74F74DR is active and available in Cut Tape (CT) and Digi-Reel packaging options. The SN74F74DR also exhibits improved propagation delay performance (5.8 ns versus 8 ns at 5V, 50pF load).

Q: Are the pin configurations identical between these parts?

A: Yes. Both the SN74F74DRG4 and SN74F74DR use the 14-SOIC package with identical pinout. No PCB layout modifications are required for substitution.

Q: Do compliance certifications differ between the substitute parts?

A: No. Both parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels (MSL 1 - Unlimited). Export classification (EAR99) and HTSUS coding are equivalent.

Q: What is the impact of the improved propagation delay in the SN74F74DR?

A: The SN74F74DR provides faster signal propagation (5.8 ns versus 8 ns), which improves timing margins in synchronous logic circuits. This enhancement is beneficial for high-frequency applications operating near the 145 MHz clock frequency specification.

Q: Is the SN74F74DR suitable for new designs?

A: Yes. The SN74F74DR is an active product with full manufacturer support, making it the appropriate choice for new designs requiring dual D-type flip-flop functionality in the 74F logic family.