CD74ACT374M Equivalent & Substitute Parts

Part Overview

The CD74ACT374M is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit capacity and tri-state, non-inverted output configuration. This component operates as a standard positive edge-triggered flip-flop in the 74ACT logic family, housed in a 20-SOIC surface mount package.

The CD74ACT374M is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available from active product lines, including direct manufacturer alternatives and parametrically compatible devices that maintain functional compatibility while offering improved availability and extended product lifecycle support.

Key Parameters

Parameter	Value
Type	D-Type Flip-Flop
Number of Elements	1
Number of Bits per Element	8
Output Type	Tri-State, Non-Inverted
Trigger Type	Positive Edge
Clock Frequency	110 MHz (CD74ACT374M)
Max Propagation Delay @ 5V, 50pF	11.2 ns (CD74ACT374M)
Voltage Supply Range	4.5V to 5.5V
Current Output High/Low	24 mA / 24 mA
Quiescent Current (Iq)	8 µA
Operating Temperature	-55°C to 125°C (TA)
Package	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the CD74ACT374M is determined by the following critical parameters:

Package Type: All substitutes must use 20-SOIC surface mount package
Logic Function: D-Type flip-flop with 1 element, 8-bit configuration
Output Configuration: Tri-state, non-inverted output
Trigger Mechanism: Positive edge-triggered operation
Voltage Supply: 4.5V to 5.5V operating range
Output Drive Capability: 24 mA minimum for both high and low states
Compliance: ROHS3 compliant

Substitute parts are grouped into three categories:

Direct Manufacturer Equivalent (CD74ACT374M96): Identical base product number (74ACT374) from Texas Instruments with active product status and matching electrical specifications.
Parametric Equivalent (CD74ACT574M): Different base product number (74ACT574) with identical electrical parameters, package, and functional characteristics, though marked as obsolete.
Manufacturer Recommended Alternatives (onsemi MC74ACT series): onsemi-manufactured parts including MC74ACT374DWG, MC74ACT374DWR2G, MC74ACT574DWG, MC74ACT574DWR2G, and MC74ACT377DWR2G, all with active product status and compatible electrical specifications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Clock Frequency (MHz)	Max Propagation Delay @ 5V, 50pF (ns)	Input Capacitance (pF)	Operating Temperature (°C)	MSL Rating	Packaging
CD74ACT374M	Texas Instruments	Discontinued	110	11.2	10	-55 to 125	1 (Unlimited)	Tube
CD74ACT374M96	Texas Instruments	Active	110	11.2	10	-55 to 125	1 (Unlimited)	Not specified
CD74ACT574M	Texas Instruments	Obsolete	110	11.2	10	-55 to 125	1 (Unlimited)	Tube
MC74ACT374DWG	onsemi	Active	160	10	4.5	-40 to 85	3 (168 Hours)	Tube
MC74ACT374DWR2G	onsemi	Active	160	10	4.5	-40 to 85	3 (168 Hours)	Tape & Reel
MC74ACT574DWG	onsemi	Active	100	11	4.5	-40 to 85	3 (168 Hours)	Tube
MC74ACT574DWR2G	onsemi	Active	100	11	4.5	-40 to 85	3 (168 Hours)	Tape & Reel
MC74ACT377DWR2G	onsemi	Active	140	10	4.5	-40 to 85	3 (168 Hours)	Tape & Reel

Engineering Selection Recommendations

Primary Recommendation: CD74ACT374M96

CD74ACT374M96 is the direct equivalent from Texas Instruments with active product status. This part maintains identical electrical specifications and operating parameters to the discontinued CD74ACT374M, including the extended operating temperature range of -55°C to 125°C and MSL rating of 1 (Unlimited). Selection of this part eliminates any parametric deviations and ensures seamless integration into existing designs.

Secondary Recommendation: MC74ACT374DWR2G or MC74ACT374DWG

onsemi-manufactured MC74ACT374 variants offer active product status with improved performance characteristics. Both parts feature higher clock frequency (160 MHz vs. 110 MHz) and faster propagation delay (10 ns vs. 11.2 ns). The trade-off involves a narrower operating temperature range (-40°C to 85°C vs. -55°C to 125°C) and higher MSL rating (3 vs. 1). These parts are suitable for applications not requiring the extended temperature range of the original device.

Tertiary Recommendation: MC74ACT574DWG or MC74ACT574DWR2G

onsemi MC74ACT574 variants provide parametric equivalence with active product status. Clock frequency is reduced to 100 MHz with propagation delay of 11 ns, closely matching the original CD74ACT374M specifications. Operating temperature range and MSL rating follow the same constraints as other onsemi alternatives.

Packaging Consideration

For high-volume applications, tape and reel packaging (DWR2G suffix) offers cost and handling advantages over tube packaging. For low-volume or prototype applications, tube packaging (DWG suffix) may be more practical.

Frequently Asked Questions (FAQ)

Q: Can I directly replace CD74ACT374M with CD74ACT374M96?

A: Yes. CD74ACT374M96 is the direct active equivalent from Texas Instruments with identical electrical specifications, package configuration, and functional characteristics. No design modifications are required.

Q: What are the key differences between Texas Instruments and onsemi alternatives?

A: onsemi MC74ACT374 and MC74ACT574 parts offer improved performance (higher clock frequency and faster propagation delay) but operate within a narrower temperature range (-40°C to 85°C vs. -55°C to 125°C). Selection depends on application temperature requirements. All parts maintain the same 20-SOIC package and tri-state output configuration.

Q: Is MC74ACT377DWR2G a suitable substitute?

A: MC74ACT377DWR2G is functionally compatible with identical electrical parameters and package type. The primary difference is non-inverted output configuration without tri-state capability in certain applications. Verify output requirements before selection.

Q: What does MSL rating mean for component selection?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to ambient conditions before soldering. CD74ACT374M carries MSL 1 (Unlimited), while onsemi alternatives carry MSL 3 (168 Hours). For standard manufacturing environments, both ratings are acceptable. Extended storage or high-humidity conditions may require special handling for MSL 3 components.

Q: Can I use tape and reel packaging instead of tube?

A: Yes. Tape and reel packaging (DWR2G suffix) contains the same die and electrical specifications as tube packaging (DWG suffix). The difference is mechanical packaging format. Tape and reel is standard for automated assembly lines, while tube packaging is common for manual assembly or lower-volume applications.

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 CD74ACT374M.

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