CD74AC374M Equivalent & Substitute Parts

Part Overview

The CD74AC374M 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 classified as Last Time Buy, indicating discontinued production status. Alternative equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Substiute Parts

CD74AC374M

Texas InstrumentsIn Stock: 2061CD74AC374M Datasheet

Current PartRFQ

CD74AC374M96

Texas InstrumentsIn Stock: 1428CD74AC374M96 Datasheet

MFR RecommendedRFQ

MC74AC374DWR2G

onsemiIn Stock: 3778MC74AC374DWR2G Datasheet

DirectRFQ

MC74AC374DWG

onsemiIn Stock: 984MC74AC374DWG Datasheet

MFR RecommendedRFQ

MC74AC377DWR2G

onsemiIn Stock: 1739MC74AC377DWR2G Datasheet

MFR RecommendedRFQ

MC74AC574DWG

onsemiIn Stock: 2608MC74AC574DWG Datasheet

MFR RecommendedRFQ

MC74AC574DWR2G

onsemiIn Stock: 2232MC74AC574DWR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74AC374M is determined by the following critical parameters that must remain functionally equivalent:

Core Functional Requirements:

• D-Type flip-flop architecture with 1 element and 8-bit configuration
• Positive edge trigger mechanism
• Tri-State, Non-Inverted output capability
• 20-SOIC package form factor (0.295", 7.50mm Width)
• Surface mount mounting type

Electrical Compatibility Parameters:

• Supply voltage range must encompass or match the original specification
• Propagation delay performance at 5V, 50pF load
• Output drive current (24 mA minimum for both high and low states)
• Quiescent current specifications
• Input capacitance characteristics

Compliance & Environmental Parameters:

• RoHS3 compliance status
• Operating temperature range coverage
• Moisture sensitivity level (MSL) rating

Substitute parts are grouped based on whether they maintain these core functional and electrical parameters while potentially differing in packaging format (Tube vs. Tape & Reel) or manufacturer source.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same Base Product Number):

CD74AC374M96 is the manufacturer-recommended equivalent from Texas Instruments, maintaining the same 74AC374 base product number with identical functional architecture. This part is in Active product status and provides the most direct substitution path. The primary difference is packaging format (Tape & Reel versus Tube) and MSL rating (1 versus 1). Operating temperature range remains -55°C ~ 125°C, matching the original specification.

Cross-Manufacturer Equivalents (74AC374 Base Product):

MC74AC374DWR2G and MC74AC374DWG from onsemi are functionally equivalent D-Type flip-flops with identical 8-bit, tri-state output architecture. Both maintain the 20-SOIC package form factor and are in Active product status. These parts feature improved propagation delay performance (9.5 ns versus 10.8 ns) and extended supply voltage range (2V ~ 6V). Operating temperature range is narrower (-40°C ~ 85°C), which may be a limiting factor for applications requiring the full -55°C ~ 125°C range of the original part. MSL rating is 3 (168 Hours).

Functional Alternatives (Different Base Product Numbers):

MC74AC377DWR2G (74AC377 base) and MC74AC574DWG/MC74AC574DWR2G (74AC574 base) are functional alternatives with the same D-Type flip-flop architecture, 1 element, 8-bit configuration, and 20-SOIC package. These parts differ in output configuration or internal logic function but maintain electrical compatibility for tri-state, non-inverted output applications. All are in Active product status with ROHS3 compliance and MSL rating of 3 (168 Hours).

Selection Criteria:

For applications requiring the full -55°C ~ 125°C operating temperature range, CD74AC374M96 is the recommended substitute. For applications operating within -40°C ~ 85°C, onsemi equivalents (MC74AC374DWR2G or MC74AC374DWG) provide superior performance characteristics and active product status. Packaging format selection (Tube, Tape & Reel, or Cut Tape) should align with production assembly requirements and inventory management practices.

Frequently Asked Questions (FAQ)

Q: Can MC74AC374DWR2G replace CD74AC374M in all applications?

A: MC74AC374DWR2G is functionally equivalent for applications operating within -40°C ~ 85°C. The original CD74AC374M supports -55°C ~ 125°C. If your application requires the full temperature range, this substitute is not suitable. For standard industrial temperature ranges, this part is compatible.

Q: What is the difference between CD74AC374M96 and MC74AC374DWR2G?

A: CD74AC374M96 is manufactured by Texas Instruments and maintains the original -55°C ~ 125°C operating temperature range with MSL rating of 1. MC74AC374DWR2G is manufactured by onsemi with -40°C ~ 85°C operating range and MSL rating of 3. Both are 74AC374 base products with identical functional architecture. CD74AC374M96 is the direct manufacturer equivalent; MC74AC374DWR2G is a cross-manufacturer alternative.

Q: Why are MC74AC377DWR2G and MC74AC574DWG listed as substitutes if they have different base product numbers?

A: These parts share the same D-Type flip-flop architecture, 1 element, 8-bit configuration, tri-state output capability, and 20-SOIC package form factor. While the internal logic function differs (74AC377 versus 74AC574), they are functionally compatible for applications requiring D-Type flip-flop logic with these specifications. Verify specific logic function requirements before substitution.

Q: Does packaging format affect electrical performance?

A: No. Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel® are packaging and delivery formats only. Electrical performance, functional characteristics, and pin configuration remain identical. Selection should be based on production assembly equipment compatibility and inventory management requirements.

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

A: MSL rating indicates moisture sensitivity level. MSL 1 (Unlimited) means the component has no moisture sensitivity restrictions and can be stored indefinitely. MSL 3 (168 Hours) means the component must be used within 168 hours of package opening in standard humidity conditions. For applications with extended storage or humid environments, MSL 1 rated parts are preferred.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the original CD74AC374M specification.

Q: Can I use MC74AC574DWR2G if my design specifies CD74AC374M?

A: MC74AC574DWR2G is a functional alternative with the same D-Type flip-flop architecture and 20-SOIC package. However, the 74AC574 base product has different internal logic compared to 74AC374. Substitution is only appropriate if your circuit design does not depend on the specific logic function of the 74AC374. Consult your schematic and application requirements before substitution.