74HC374D,652 Equivalent & Substitute Parts

Part Overview

The 74HC374D,652 is a D-Type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., configured as a single 8-bit element with tri-state, non-inverted outputs in a 20-SOIC surface mount package. This component is classified as Obsolete, which necessitates identification of functionally equivalent alternatives from active product lines. The 74HC374 series serves as a standard latch/register function in digital logic applications requiring edge-triggered data capture and output control.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HC374D,652
Manufacturer	Nexperia USA Inc.
Product Status	Obsolete
Type	D-Type Flip-Flop
Number of Elements	1
Number of Bits per Element	8
Output Type	Tri-State, Non-Inverted
Clock Frequency	83 MHz
Max Propagation Delay @ 6V, 50pF	28 ns
Trigger Type	Positive Edge
Voltage Supply Range	2V – 6V
Current Output High/Low	7.8 mA / 7.8 mA
Quiescent Current (Iq)	4 µA
Input Capacitance	4.6 pF
Operating Temperature Range	–40°C to +125°C
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74HC374D,652 is determined by strict equivalence across the following critical parameters:

Functional Equivalence Requirements:

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
Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount

Electrical Compatibility Parameters:

Voltage Supply Range: 2V – 6V (minimum overlap required)
Output Current Capability: 7.8 mA / 7.8 mA
Propagation Delay: Must not exceed specified maximum at rated conditions
Operating Temperature Range: Must encompass or exceed –40°C to +125°C

Compliance & Certification:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: Acceptable for intended application

Substitute parts are grouped into three categories based on product status and availability: Active Direct Equivalents, Active Similar Equivalents, and Last Time Buy / Discontinued alternatives.

Parameter Comparison

Part Number	Manufacturer	Product Status	Clock Frequency (MHz)	Max Propagation Delay @ 6V, 50pF (ns)	Quiescent Current (µA)	Input Capacitance (pF)	Operating Temperature (°C)	Packaging	RoHS Status	MSL
74HC374D,652	Nexperia USA Inc.	Obsolete	83	28	4	4.6	–40 to +125	20-SOIC	ROHS3	1
74HC374D,653	Nexperia USA Inc.	Active	83	28	4	4.6	–40 to +125	20-SOIC	ROHS3	1
74HC374D	Toshiba Semiconductor and Storage	Active	90	32	4	3	–40 to +125	20-SOIC	ROHS3	1
MC74HC374ADWR2G	onsemi	Active	35	21	4	10	–55 to +125	20-SOIC	ROHS3	3
CD74HC374M	Texas Instruments	Last Time Buy	60	28	8	10	–55 to +125	20-SOIC	ROHS3	1
CD74HC374M96	Texas Instruments	Active	60	28	8	10	–55 to +125	20-SOIC	ROHS3	1
MC74HC374ADWG	onsemi	Active	35	21	4	10	–55 to +125	20-SOIC	ROHS3	3
MM74HC374WM	Fairchild Semiconductor	Active	35	40	8	5	–40 to +85	20-SOIC	Not Specified	Not Specified
MM74HC374WMX	Fairchild Semiconductor	Active	35	40	8	5	–40 to +85	20-SOIC	Not Specified	Not Specified
SN74HC374DW	Texas Instruments	Discontinued at DiGi Electronics	70	15	8	3	–40 to +85	20-SOIC	ROHS3	1
SN74HC374DWR	Texas Instruments	Active	70	15	8	3	–40 to +85	20-SOIC	ROHS3	1

Engineering Selection Recommendations

Primary Recommendation: 74HC374D,653 (Nexperia USA Inc.)

The 74HC374D,653 is the direct functional equivalent of the obsolete 74HC374D,652, differing only in packaging format (Cut Tape & Digi-Reel versus unspecified). Both parts share identical electrical specifications, temperature range, and compliance certifications. This part is currently Active and maintains full compatibility with existing designs.

Secondary Recommendation: CD74HC374M96 (Texas Instruments)

The CD74HC374M96 is an Active product offering extended temperature range (–55°C to +125°C) and identical propagation delay performance. It is available in high inventory (22,155 units) and packaged in Tape & Reel format. The increased quiescent current (8 µA versus 4 µA) and input capacitance (10 pF versus 4.6 pF) are within acceptable operational margins for most applications.

Tertiary Recommendation: SN74HC374DWR (Texas Instruments)

The SN74HC374DWR is an Active product with superior propagation delay performance (15 ns versus 28 ns at 6V, 50pF), enabling higher-speed applications. Operating temperature range is limited to –40°C to +85°C. This part is suitable for designs not requiring the full –40°C to +125°C range.

Alternative Consideration: MC74HC374ADWR2G (onsemi)

The MC74HC374ADWR2G provides extended temperature range (–55°C to +125°C) and is currently Active. Moisture Sensitivity Level is MSL 3 (168 hours), requiring controlled storage conditions. Propagation delay is 21 ns at 6V, 50pF, meeting performance requirements.

Not Recommended: MM74HC374WM / MM74HC374WMX (Fairchild Semiconductor)

These parts exhibit degraded propagation delay performance (40 ns versus 28 ns) and reduced operating temperature range (–40°C to +85°C). RoHS and MSL compliance status is not specified, creating potential regulatory and supply chain uncertainty.

Not Recommended: SN74HC374DW (Texas Instruments)

This part is Discontinued at DiGi Electronics and should not be selected for new designs despite superior propagation delay characteristics.

Frequently Asked Questions (FAQ)

Q: Can I use 74HC374D,653 as a direct replacement for 74HC374D,652?

A: Yes. The 74HC374D,653 is functionally and electrically identical to the 74HC374D,652. The only difference is packaging format. Both are 20-SOIC surface mount packages with identical pin assignments, electrical performance, and compliance certifications.

Q: What is the difference between the various substitute parts?

A: Substitute parts differ in clock frequency, propagation delay, quiescent current, input capacitance, operating temperature range, and product status. The 74HC374D,653 and CD74HC374M96 offer the closest electrical match. SN74HC374DWR provides faster propagation delay but narrower temperature range. onsemi and Fairchild alternatives offer cost or availability advantages but with performance trade-offs.

Q: Does operating temperature range affect my selection?

A: Yes. If your application requires operation below –40°C or above +85°C, select CD74HC374M96 or MC74HC374ADWR2G, which support –55°C to +125°C. For standard industrial range (–40°C to +85°C), SN74HC374DWR is acceptable. The original 74HC374D,652 specification requires –40°C to +125°C support.

Q: What is Moisture Sensitivity Level (MSL) and why does it matter?

A: MSL indicates the maximum time a component can be exposed to ambient moisture before soldering. MSL 1 (Unlimited) allows indefinite storage. MSL 3 (168 hours) requires controlled storage and handling. For high-volume manufacturing or extended inventory periods, MSL 1 parts are preferred. MC74HC374ADWR2G and MM74HC374WM/WMX have higher MSL ratings requiring special handling.

Q: Can I use a part with different propagation delay?

A: Propagation delay affects timing margins in synchronous circuits. SN74HC374DWR (15 ns) is faster than the original (28 ns), which is generally acceptable. Slower alternatives like MM74HC374WM (40 ns) may violate timing constraints in high-speed designs. Verify timing requirements before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: No. MM74HC374WM and MM74HC374WMX do not specify RoHS compliance status. If RoHS3 compliance is required for your application, select from: 74HC374D,653, 74HC374D, MC74HC374ADWR2G, MC74HC374ADWG, CD74HC374M, CD74HC374M96, SN74HC374DW, or SN74HC374DWR.

Q: Which part has the best availability?

A: CD74HC374M96 has the highest inventory (22,155 units). 74HC374D (Toshiba) has 20,300 units. 74HC374D,653 (Nexperia) has 6,614 units. Availability should be confirmed with your supplier before design finalization.

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