SN74ACT374DWE4 Equivalent & Substitute Parts

Part Overview

The SN74ACT374DWE4 is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, configured as a single element with 8-bit positive edge triggering in a 20-SOIC surface mount package. This device is classified as Last Time Buy, indicating limited availability and the necessity to identify equivalent alternatives for ongoing design requirements and production continuity.

The 74ACT374 series represents a standard logic function within the ACT (Advanced CMOS Technology) family, widely used in digital systems requiring edge-triggered data storage and tri-state output capability. Substitution becomes critical when the SN74ACT374DWE4 reaches end-of-life status, requiring engineers to select functionally equivalent parts that maintain electrical and mechanical compatibility.

Substiute Parts

SN74ACT374DWE4

Texas InstrumentsIn Stock: 1195SN74ACT374DWE4 Datasheet

Current PartRFQ

SN74ACT374DWR

Texas InstrumentsIn Stock: 2450SN74ACT374DWR Datasheet

MFR RecommendedRFQ

SN74ACT374DW

Texas InstrumentsIn Stock: 3404SN74ACT374DW Datasheet

MFR RecommendedRFQ

MC74ACT374DWR2G

onsemiIn Stock: 1886MC74ACT374DWR2G 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

MC74ACT374DWG

onsemiIn Stock: 2288MC74ACT374DWG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ACT374DWE4 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Base product number (74ACT374 series)
• Package type (20-SOIC surface mount)
• Output configuration (Tri-State, Non-Inverted)
• Trigger type (Positive Edge)
• Number of elements (1) and bits per element (8)
• Supply voltage range (4.5V ~ 5.5V)
• Operating temperature range (-40°C ~ 85°C)

Acceptable Variation Parameters:

• Clock frequency (minimum 100 MHz acceptable)
• Max propagation delay (up to 11 ns acceptable)
• Quiescent current (up to 8 µA acceptable)
• Moisture Sensitivity Level (MSL 1 or MSL 3 acceptable)
• Packaging format (Tube, Cut Tape, or Tape & Reel)
• Manufacturer (Texas Instruments or onsemi)

Substitute parts must maintain identical pinout, package footprint, and functional behavior within the specified electrical tolerances. Parts with different base numbers (74ACT377, 74ACT574) are included only when they maintain full electrical and mechanical compatibility within the stated parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Direct Functional Equivalent:

SN74ACT374DWR (Texas Instruments, Active status) provides the most direct substitution path. This part maintains identical electrical specifications to the SN74ACT374DWE4 with improved propagation delay performance (8.5 ns vs. 10 ns) and active product status ensuring long-term availability. The only difference is packaging format (Cut Tape vs. Tube), which does not affect electrical function or PCB assembly compatibility.

Secondary Recommendation - Parametric Equivalent:

MC74ACT374DWG or MC74ACT374DWR2G (onsemi, Active status) offer full parametric equivalence with identical clock frequency and propagation delay specifications. These parts maintain tri-state, non-inverted output configuration and 20-SOIC package compatibility. The trade-off is increased quiescent current (8 µA vs. 4 µA) and MSL 3 moisture sensitivity rating, which may require adjusted handling procedures in high-humidity manufacturing environments.

Alternative Consideration - Lower Performance Tier:

MC74ACT574DWG or MC74ACT574DWR2G (onsemi, Active status) function as electrical substitutes with reduced clock frequency (100 MHz vs. 160 MHz) and slightly increased propagation delay (11 ns vs. 10 ns). These parts are suitable only for applications where the lower performance specifications do not impact system timing requirements. Product status is Active, ensuring availability.

Not Recommended:

MC74ACT377DWG (onsemi, Obsolete status) should not be selected despite parametric compatibility, as obsolete status indicates discontinued manufacturing and limited inventory availability.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74ACT374DWE4 with SN74ACT374DWR without circuit modification?

A: Yes. Both parts are 74ACT374 base devices with identical electrical specifications, pinout, and 20-SOIC package footprint. The difference in packaging format (Tube vs. Cut Tape) does not affect circuit function or PCB assembly compatibility.

Q: What is the difference between Texas Instruments and onsemi 74ACT374 parts?

A: Both manufacturers produce 74ACT374 logic devices meeting identical functional specifications. Texas Instruments SN74ACT374DWR offers lower quiescent current (4 µA) and MSL 1 rating. onsemi MC74ACT374DWG/DWR2G variants have higher quiescent current (8 µA) and MSL 3 rating. Electrical performance and pinout are equivalent.

Q: Why do some substitute parts show different clock frequencies (100 MHz vs. 160 MHz)?

A: MC74ACT574 variants operate at 100 MHz maximum clock frequency, compared to 160 MHz for 74ACT374 devices. This represents a different product line within the 74ACT family. Selection depends on application timing requirements. If your circuit requires 160 MHz operation, 74ACT574 parts are not suitable.

Q: What does MSL 3 (168 Hours) mean compared to MSL 1 (Unlimited)?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to ambient conditions before soldering. MSL 1 (Unlimited) allows indefinite storage without special handling. MSL 3 (168 Hours) requires components to be stored in dry conditions and baked before assembly if storage exceeds 168 hours. This affects manufacturing logistics but not electrical function.

Q: Are 74ACT377 parts (MC74ACT377DWG/DWR2G) suitable substitutes?

A: MC74ACT377 devices are not recommended as primary substitutes. While they share the 20-SOIC package and basic D-Type flip-flop architecture, they have different output configuration (Non-Inverted only, without tri-state capability) and lower clock frequency (140 MHz vs. 160 MHz). Use only if your circuit does not require tri-state output functionality.

Q: What is the inventory status for each substitute part?

A: SN74ACT374DWR (Texas Instruments) has 2401 units in stock. MC74ACT374DWG (onsemi) has 2216 units. MC74ACT374DWR2G (onsemi) has 1789 units. MC74ACT574 variants have 2040-2092 units. All substitute parts show adequate inventory for production requirements.

Q: Can I use MC74ACT574 parts if my application only requires 100 MHz operation?

A: Yes, if your circuit timing specifications do not exceed 100 MHz clock frequency and 11 ns propagation delay, MC74ACT574DWG or MC74ACT574DWR2G are electrically compatible substitutes. Verify that system timing margins accommodate the slightly increased propagation delay compared to 74ACT374 devices.