SN74LS374NSRG4 Equivalent & Substitute Parts

Part Overview

The SN74LS374NSRG4 is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, designed for 8-bit parallel data storage and transfer applications. This component features a single element with 8 bits per element, positive edge triggering, and tri-state non-inverted outputs. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

SN74LS374NSRG4

Texas InstrumentsIn Stock: 715SN74LS374NSRG4 Datasheet

Current PartRFQ

SN74LS374NSR

Texas InstrumentsIn Stock: 3781SN74LS374NSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74LS374NSRG4 is determined by strict equivalence across the following critical parameters:

• Logic Function: D-Type flip-flop with 8-bit configuration and single element
• Output Characteristics: Tri-state, non-inverted outputs
• Electrical Performance: 50 MHz clock frequency, 28 ns maximum propagation delay, 5V supply voltage range (4.75V ~ 5.25V)
• Trigger Mechanism: Positive edge triggering
• Package Specification: 20-SOIC surface mount package with 0.209" width (5.30mm)
• Compliance Standards: ROHS3 compliant, MSL Level 1

The primary substitute identified is the SN74LS374NSR, which maintains identical electrical specifications, functional characteristics, and package geometry while differing only in packaging format (Tape & Reel versus individual packaging) and product status (Active versus Discontinued).

Parameter Comparison

Engineering Selection Recommendations

The SN74LS374NSR is a direct functional and electrical equivalent to the SN74LS374NSRG4. Both parts are manufactured by Texas Instruments, share identical logic specifications, and are housed in the same 20-SOIC package. The primary distinction is product status: the SN74LS374NSRG4 is discontinued, while the SN74LS374NSR maintains active production status with higher inventory availability (3700 units in stock versus 631 units).

Both parts maintain ROHS3 compliance and MSL Level 1 certification, ensuring compatibility with modern manufacturing and environmental standards. The SN74LS374NSR is available in Tape & Reel packaging, which is standard for high-volume production environments. For applications requiring individual unit packaging, alternative sourcing channels or packaging conversion services may be necessary.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS374NSR directly replace the SN74LS374NSRG4 in existing designs?

A: Yes. Both parts are electrically and functionally identical. They share the same pin configuration, electrical characteristics, and 20-SOIC package dimensions. Direct substitution is possible without circuit modification.

Q: What is the difference between SN74LS374NSRG4 and SN74LS374NSR?

A: The parts are functionally equivalent. The primary differences are packaging format (individual versus Tape & Reel) and product status (discontinued versus active). The "G4" suffix in the original part number indicates a specific packaging variant that is no longer in production.

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

A: No. Both parts maintain identical ROHS3 compliance and MSL Level 1 certification. They meet the same environmental and regulatory standards.

Q: What is the pin compatibility between these parts?

A: Both parts use the 20-SOIC package with identical pin assignments. PCB layouts designed for the SN74LS374NSRG4 require no modification for the SN74LS374NSR.

Q: Is the Tape & Reel packaging of the SN74LS374NSR suitable for my application?

A: Tape & Reel packaging is standard for automated assembly and high-volume production. If your assembly process requires individual unit packaging, contact your supplier regarding alternative packaging options or bulk quantity conversions.

Q: What are the critical electrical parameters for substitution?

A: The critical parameters are 50 MHz clock frequency, 28 ns maximum propagation delay, 5V supply voltage range, positive edge triggering, tri-state non-inverted outputs, and 8-bit configuration. The SN74LS374NSR maintains all these specifications.