SN74ACT374DWRG4 Equivalent & Substitute Parts

Part Overview

The SN74ACT374DWRG4 is a D-type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit positive edge triggering in a 20-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and production continuity. The 74ACT series provides standard logic functionality with tri-state, non-inverted outputs suitable for digital data storage and transfer applications.

Substiute Parts

SN74ACT374DWRG4

Texas InstrumentsIn Stock: 1086SN74ACT374DWRG4 Datasheet

Current PartRFQ

SN74ACT374DWR

Texas InstrumentsIn Stock: 2450SN74ACT374DWR Datasheet

Parametric EquivalentRFQ

MC74ACT374DWG

onsemiIn Stock: 2288MC74ACT374DWG Datasheet

MFR RecommendedRFQ

MC74ACT377DWG

onsemiIn Stock: 794MC74ACT377DWG Datasheet

MFR RecommendedRFQ

MC74ACT377DWR2G

onsemiIn Stock: 2424MC74ACT377DWR2G Datasheet

MFR RecommendedRFQ

MC74ACT574DWG

onsemiIn Stock: 2128MC74ACT574DWG Datasheet

MFR RecommendedRFQ

MC74ACT574DWR2G

onsemiIn Stock: 2111MC74ACT574DWR2G Datasheet

MFR RecommendedRFQ

MC74ACT374DWR2G

onsemiIn Stock: 1886MC74ACT374DWR2G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74ACT374DWRG4 is determined by the following critical parameters:

Primary Substitution Criteria:

• Package type: 20-SOIC (0.295", 7.50mm Width)
• Function: D-Type flip-flop with 1 element, 8-bit configuration
• Output type: Tri-State, Non-Inverted
• Trigger type: Positive Edge
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature: -40°C ~ 85°C

Substitution Categories:

Direct Parametric Equivalents maintain identical electrical specifications and output characteristics. These parts are fully interchangeable with the main part number.

Manufacturer-Recommended Alternatives are functionally compatible but may have minor variations in quiescent current, propagation delay, or moisture sensitivity level. These parts are suitable for applications where the main part is unavailable.

Functional Variants share the same package and basic D-type flip-flop architecture but differ in clock frequency or output type. These require design review to confirm compatibility with specific timing requirements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Highest Compatibility): SN74ACT374DWR from Texas Instruments is the primary direct substitute. This part maintains active product status, identical clock frequency (160 MHz), and improved propagation delay (8.5 ns vs. 10 ns). Both parts share MSL 1 rating and identical output specifications.

For Alternative Sourcing (onsemi Equivalents): MC74ACT374DWR2G and MC74ACT374DWG from onsemi provide full functional equivalence with identical clock frequency and propagation delay. These parts are actively manufactured and available in higher quantities. The trade-off is increased quiescent current (8 µA vs. 4 µA) and MSL 3 moisture sensitivity rating, which requires appropriate handling during assembly.

For Lower-Speed Applications: MC74ACT574DWR2G and MC74ACT574DWG are suitable when clock frequency can be reduced to 100 MHz. These parts offer active product status and good availability but require confirmation that the 11 ns propagation delay meets system timing requirements.

For Non-Tri-State Output Requirements: MC74ACT377DWR2G provides an alternative with non-inverted output only (no tri-state capability). This part operates at 140 MHz and is actively produced by onsemi. Selection requires verification that tri-state functionality is not required in the application.

Avoid: MC74ACT377DWG carries obsolete product status and should not be selected for new designs or long-term production.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT374DWR directly replace SN74ACT374DWRG4? A: Yes. Both parts share identical electrical specifications, package type (20-SOIC), and output characteristics (tri-state, non-inverted). SN74ACT374DWR is actively produced by Texas Instruments and offers improved propagation delay (8.5 ns vs. 10 ns).

Q: What is the difference between MC74ACT374DWR2G and MC74ACT374DWG? A: Both parts are manufactured by onsemi with identical electrical specifications. The primary difference is packaging: DWR2G is supplied in Tape & Reel format, while DWG is supplied in Tube format. Electrical performance and MSL rating are identical.

Q: Can MC74ACT574DWR2G replace SN74ACT374DWRG4? A: Functionally, yes, but with timing considerations. The MC74ACT574DWR2G operates at 100 MHz (vs. 160 MHz) with 11 ns propagation delay (vs. 10 ns). Both maintain tri-state, non-inverted output and 20-SOIC packaging. Design review is required to confirm the lower clock frequency and increased propagation delay are acceptable.

Q: Why do onsemi parts show higher quiescent current (8 µA vs. 4 µA)? A: This is a manufacturing difference between Texas Instruments and onsemi implementations of the 74ACT logic family. Both values remain within acceptable limits for standard logic applications. The higher quiescent current has minimal impact on most designs.

Q: What does MSL 3 (168 Hours) mean compared to MSL 1 (Unlimited)? A: MSL rating indicates moisture sensitivity during storage and assembly. MSL 1 parts have unlimited shelf life in standard conditions. MSL 3 parts must be used within 168 hours of opening the moisture barrier bag. onsemi parts require appropriate moisture control during PCB assembly but are otherwise fully compatible.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the environmental compliance profile of the original SN74ACT374DWRG4.

Q: Can I use MC74ACT377DWR2G as a substitute? A: Only if your application does not require tri-state output capability. The MC74ACT377DWR2G provides non-inverted output only, without the ability to place outputs in high-impedance state. Verify your circuit design does not depend on tri-state functionality before selecting this part.