SN74F74NG4 Equivalent & Substitute Parts

Part Overview

The SN74F74NG4 is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments in the 74F series. This component features two independent 1-bit D-type flip-flops with set and reset functionality, complementary outputs, and positive edge triggering. The part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design requirements and production needs.

Substiute Parts

SN74F74NG4

Texas InstrumentsIn Stock: 1003SN74F74NG4 Datasheet

Current PartRFQ

SN74F74N

Texas InstrumentsIn Stock: 2162SN74F74N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74F74NG4 is determined by strict equivalence across the following critical parameters:

• Logic Function: Dual D-type flip-flop with set/reset capability and complementary outputs
• Electrical Performance: 145 MHz clock frequency, 8 ns maximum propagation delay at 5V with 50 pF load
• Trigger Characteristic: Positive edge triggering
• Power Supply: 4.5V to 5.5V operating range
• Output Drive Capability: 1 mA high, 20 mA low
• Package Specification: 14-DIP (0.300", 7.62mm) through-hole mounting
• Compliance Standards: ROHS3 compliant, REACH unaffected

The SN74F74N qualifies as a direct substitute based on identical electrical specifications, functional characteristics, and package configuration. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The SN74F74N is a direct functional and electrical equivalent to the SN74F74NG4. Selection between these parts should be based on the following factors:

Product Status: The SN74F74NG4 is discontinued at DiGi Electronics, whereas the SN74F74N maintains active status with Texas Instruments. For new designs and ongoing production, the SN74F74N is the preferred selection to ensure long-term availability and supply chain continuity.

Compliance and Certifications: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution.

Packaging and Availability: The SN74F74N is supplied in tube packaging format with 2100 pieces in stock, compared to the SN74F74NG4 with 894 pieces available. The tube packaging is standard for active production components and supports automated assembly processes.

Electrical Equivalence: All electrical parameters, timing specifications, and functional characteristics are identical between the two parts, ensuring direct pin-for-pin compatibility and circuit performance equivalence.

Frequently Asked Questions (FAQ)

Q: Can the SN74F74N be used as a direct replacement for the SN74F74NG4 in existing designs?

A: Yes. The SN74F74N is electrically and functionally equivalent to the SN74F74NG4. Both parts share identical pin configurations, electrical specifications, timing characteristics, and package dimensions (14-DIP, 0.300", 7.62mm). Direct substitution is supported without circuit modifications.

Q: What is the primary difference between the SN74F74NG4 and SN74F74N?

A: The primary differences are product status and packaging format. The SN74F74NG4 is discontinued at DiGi Electronics, while the SN74F74N maintains active status with Texas Instruments. The SN74F74N is supplied in tube packaging, which is standard for active production components.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both the SN74F74NG4 and SN74F74N maintain identical ROHS3 compliance and REACH unaffected status. They meet the same regulatory requirements for electronic component manufacturing and distribution.

Q: What are the critical parameters that define substitution eligibility for this part?

A: Substitution eligibility is determined by equivalence in logic function (dual D-type flip-flop with set/reset), electrical performance (145 MHz clock frequency, 8 ns propagation delay), trigger type (positive edge), power supply range (4.5V to 5.5V), output drive capability (1 mA high, 20 mA low), and package specification (14-DIP through-hole).

Q: Is the 14-DIP package dimension critical for substitution?

A: Yes. The 14-DIP (0.300", 7.62mm) package dimension is a critical substitution parameter. Both the SN74F74NG4 and SN74F74N use identical package specifications, ensuring mechanical and electrical compatibility in through-hole PCB applications.

Q: What is the operating temperature range for these parts?

A: Both the SN74F74NG4 and SN74F74N operate across the temperature range of 0°C to 70°C (TA). This specification is identical for both parts and must be considered in thermal design and application environments.