74ACT374SC Equivalent & Substitute Parts

Part Overview

The 74ACT374SC is a D-type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit capacity and tri-state, non-inverted output configuration. This component operates at a maximum clock frequency of 160 MHz with a propagation delay of 10ns at 5V with 50pF load. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

74ACT374SC

onsemiIn Stock: 191074ACT374SC Datasheet

Current PartRFQ

MC74ACT374DWG

onsemiIn Stock: 2288MC74ACT374DWG Datasheet

DirectRFQ

MC74ACT374DWR2G

onsemiIn Stock: 1886MC74ACT374DWR2G Datasheet

SimilarRFQ

SN74ACT374DWR

Texas InstrumentsIn Stock: 2450SN74ACT374DWR Datasheet

DirectRFQ

SN74ACT574DW

Texas InstrumentsIn Stock: 2264SN74ACT574DW Datasheet

DirectRFQ

CD74ACT374M

Harris CorporationIn Stock: 1946CD74ACT374M Datasheet

SimilarRFQ

CD74ACT374M96

Texas InstrumentsIn Stock: 2372CD74ACT374M96 Datasheet

SimilarRFQ

SN74ACT374NSR

Texas InstrumentsIn Stock: 2308SN74ACT374NSR Datasheet

SimilarRFQ

SN74ACT374DW

Texas InstrumentsIn Stock: 3404SN74ACT374DW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ACT374SC are classified based on functional and electrical equivalence within the 74ACT logic family. The substitution logic is determined by the following critical parameters:

Primary Substitution Criteria:

• D-Type flip-flop configuration with 1 element and 8-bit capacity
• Tri-state, non-inverted output type
• Positive edge trigger mechanism
• 20-SOIC package footprint compatibility
• Supply voltage range of 4.5V ~ 5.5V
• Output current capability of 24mA (high and low)
• Operating temperature range of -40°C ~ 85°C

Direct Manufacturer Equivalents maintain identical electrical specifications and package dimensions, differing only in product status or packaging format (tube, tape & reel, cut tape).

Similar Manufacturer Parts share the same functional architecture and pin configuration but may exhibit variations in propagation delay, quiescent current, input capacitance, or operating temperature range. These parts remain functionally compatible for most applications within the specified parameter tolerances.

Parametric Equivalents provide the same core functionality with improved or equivalent electrical performance characteristics, suitable for direct replacement in new designs or legacy system updates.

Parameter Comparison

Engineering Selection Recommendations

For Active Production and New Designs: MC74ACT374DWG and MC74ACT374DWR2G from onsemi provide direct functional equivalence with active product status and RoHS3 compliance. SN74ACT374DWR from Texas Instruments offers superior propagation delay performance (8.5ns versus 10ns) with active availability and RoHS3 compliance, making it suitable for timing-critical applications.

For Legacy System Maintenance: SN74ACT374NSR maintains the original 160 MHz clock frequency and 10ns propagation delay specifications with active product status and RoHS3 compliance. Package dimensions differ slightly (0.209" versus 0.295" width), requiring PCB layout verification before substitution.

For Extended Temperature Range Applications: CD74ACT374M96 from Texas Instruments extends the operating temperature range to -55°C ~ 125°C with active product status and RoHS3 compliance, suitable for industrial and automotive environments requiring broader thermal specifications.

Parts to Avoid: SN74ACT574DW is discontinued at DiGi Electronics and exhibits reduced clock frequency (110 MHz) and increased propagation delay (11ns). CD74ACT374M is obsolete and RoHS non-compliant. 74ACT374SC is obsolete and should be replaced with active alternatives.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT374DWG directly replace 74ACT374SC? A: Yes. Both parts share identical electrical specifications, package footprint (20-SOIC 0.295" width), and functional configuration. MC74ACT374DWG is active and available, whereas 74ACT374SC is obsolete. The primary difference is quiescent current (8 µA versus 40 µA), which represents improved power efficiency in the active part.

Q: What is the difference between MC74ACT374DWG and MC74ACT374DWR2G? A: Both parts are electrically identical. The difference is packaging format: DWG is supplied in tube format, while DWR2G is supplied in tape & reel format. Selection depends on assembly process requirements and order quantity.

Q: Why does SN74ACT374DWR show lower propagation delay (8.5ns) than the original part (10ns)? A: SN74ACT374DWR from Texas Instruments exhibits improved propagation delay performance while maintaining the same 160 MHz clock frequency specification. This represents enhanced electrical performance and is suitable for direct replacement.

Q: Is SN74ACT374NSR compatible with the original 74ACT374SC? A: Functionally yes, but with a package dimension caveat. SN74ACT374NSR uses a narrower 20-SOIC package (0.209" width) compared to the original (0.295" width). PCB footprint verification is required before substitution to ensure mechanical compatibility.

Q: Can I use CD74ACT374M96 as a substitute? A: CD74ACT374M96 is functionally compatible but exhibits different electrical characteristics: reduced clock frequency (110 MHz versus 160 MHz) and increased propagation delay (11.2ns versus 10ns). It is suitable for applications where these performance reductions are acceptable. The extended operating temperature range (-55°C ~ 125°C) makes it preferable for extreme environment applications.

Q: What does "Last Time Buy" status mean for SN74ACT374DW? A: Last Time Buy indicates the manufacturer has announced end-of-life for this part. Existing inventory may be available, but no future production is planned. For new designs, select active alternatives such as MC74ACT374DWG or SN74ACT374DWR.

Q: Are all substitute parts RoHS compliant? A: Active parts (MC74ACT374DWG, MC74ACT374DWR2G, SN74ACT374DWR, SN74ACT374DW, SN74ACT374NSR, CD74ACT374M96) are RoHS3 compliant. Obsolete parts (74ACT374SC, CD74ACT374M) are not RoHS compliant.