SN74LS374DW Equivalent & Substitute Parts

Part Overview

The SN74LS374DW is a Logic category integrated circuit functioning as a Flip Flop 1 Element D-Type 8 Bit Positive Edge device in a 20-SOIC surface mount package. This component is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and procurement. The SN74LS374DW operates within the 74LS series standard logic family and maintains tri-state, non-inverted output configuration suitable for digital logic applications requiring edge-triggered data storage.

Substiute Parts

SN74LS374DW

Texas InstrumentsIn Stock: 2207SN74LS374DW Datasheet

Current PartRFQ

SN74LS374DWR

Texas InstrumentsIn Stock: 2071SN74LS374DWR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS374DW is determined by strict equivalence across the following critical parameters:

• Base product number (74LS374) and series (74LS) must remain identical
• Functional classification as D-Type Flip Flop with 1 element and 8 bits per element
• Output configuration: Tri-State, Non-Inverted
• Trigger mechanism: Positive Edge
• Electrical specifications: Clock frequency 50 MHz, propagation delay 28ns @ 5V/45pF, supply voltage 4.75V ~ 5.25V, output currents 2.6mA/24mA, quiescent current 40 mA
• Operating temperature range: 0°C ~ 70°C
• Package specification: 20-SOIC (0.295", 7.50mm Width) surface mount
• Compliance certifications: ROHS3 Compliant, MSL Level 1

Substitutes differ only in packaging format (Tube versus Tape & Reel) and product status (Discontinued versus Active), with all electrical and functional parameters held constant.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS374DWR serves as the direct functional equivalent to the SN74LS374DW. Both components maintain identical electrical characteristics, functional specifications, and package geometry. The primary distinction lies in packaging format and product availability status.

Selection of SN74LS374DWR is supported by its Active product status, ensuring continued manufacturer support and supply chain availability. Both variants maintain ROHS3 compliance and MSL Level 1 rating, confirming equivalent environmental and regulatory standing. The Tape & Reel packaging format of the SN74LS374DWR aligns with standard high-volume production workflows, whereas the Tube format of the SN74LS374DW is suited for lower-volume or legacy procurement scenarios.

Frequently Asked Questions (FAQ)

Q: Can SN74LS374DWR directly replace SN74LS374DW in existing designs?

A: Yes. Both components are electrically and functionally identical across all specified parameters. The 20-SOIC package geometry, pin configuration, and electrical performance are equivalent. Substitution requires no design modifications.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging contains individual components in a plastic tube, typically used for lower-volume orders or manual assembly. Tape & Reel packaging presents components on continuous carrier tape within a reel, optimized for automated pick-and-place assembly equipment. Both formats contain identical components with identical specifications.

Q: Why is SN74LS374DW listed as discontinued?

A: Discontinuation at DiGi Electronics reflects supplier inventory status and does not indicate product obsolescence. The SN74LS374DWR remains in active production by Texas Instruments, providing continued access to the 74LS374 base product.

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

A: No. Both SN74LS374DW and SN74LS374DWR maintain identical ROHS3 compliance, MSL Level 1 rating, and regulatory certifications. No compliance-related restrictions apply to substitution.

Q: What are the critical electrical parameters for substitution verification?

A: Substitution compatibility is confirmed by matching: base product number (74LS374), series designation (74LS), functional type (D-Type Flip Flop, 8-bit), output configuration (Tri-State, Non-Inverted), trigger mechanism (Positive Edge), clock frequency (50 MHz), propagation delay (28ns @ 5V, 45pF), supply voltage range (4.75V ~ 5.25V), and operating temperature (0°C ~ 70°C).