SN74LVC374AQDWREP Equivalent & Substitute Parts

Part Overview

The SN74LVC374AQDWREP is a D-type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 8-bit parallel data storage capability. This device operates as a positive edge-triggered flip-flop with tri-state, non-inverted outputs in a 20-SOIC surface mount package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN74LVC374AQDWREP
Manufacturer	Texas Instruments
Series	74LVC
Type	D-Type Flip-Flop
Number of Elements	1
Number of Bits per Element	8
Output Type	Tri-State, Non-Inverted
Clock Frequency	100 MHz
Max Propagation Delay @ 3.3V, 50pF	8.5 ns
Voltage Supply Range	2V ~ 3.6V
Current Output High/Low	24 mA / 24 mA
Quiescent Current (Iq)	10 µA
Input Capacitance	4 pF
Operating Temperature Range	-40°C ~ 125°C
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SN74LVC374AQDWREP are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Compatibility Parameters:

Type: D-Type Flip-Flop
Number of Elements: 1
Number of Bits per Element: 8
Output Type: Tri-State, Non-Inverted
Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount
Trigger Type: Positive Edge

Electrical Performance Parameters:

Clock Frequency: 100 MHz or higher
Max Propagation Delay @ 3.3V, 50pF: 8.5 ns or lower
Voltage Supply Range: Must encompass or exceed 2V ~ 3.6V
Current Output High/Low: 24 mA or higher
Quiescent Current (Iq): 10 µA or lower
Input Capacitance: 4 pF or lower

Compliance & Certification:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 or 3 (168 Hours)

Substitutes are grouped into two categories: MFR Recommended (active product status with direct manufacturer support) and Parametric Equivalent (active status with matching or superior electrical specifications).

Parameter Comparison

Parameter	SN74LVC374AQDWREP	SN74LVC374ADWR	CLVC374AQDWRG4Q1	74LVC374AD,118	74LVC374AD-Q100J	MC74LCX374DWR2G
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Nexperia USA Inc.	Nexperia USA Inc.	onsemi
Series	74LVC	74LVC	74LVC	74LVC	74LVC	74LCX
Product Status	Obsolete	Active	Active	Active	Active	Active
Type	D-Type	D-Type	D-Type	D-Type	D-Type	D-Type
Number of Bits per Element	8	8	8	8	8	8
Output Type	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted
Clock Frequency	100 MHz	100 MHz	100 MHz	150 MHz	150 MHz	150 MHz
Max Propagation Delay @ 3.3V, 50pF	8.5 ns	7 ns	8.5 ns	7 ns	7 ns	8.5 ns
Voltage Supply Range	2V ~ 3.6V	1.65V ~ 3.6V	2V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	2V ~ 3.6V
Current Output High/Low	24 mA / 24 mA	24 mA / 24 mA	24 mA / 24 mA	24 mA / 24 mA	24 mA / 24 mA	24 mA / 24 mA
Quiescent Current (Iq)	10 µA	10 µA	10 µA	10 µA	10 µA	10 µA
Input Capacitance	4 pF	4 pF	4 pF	4 pF	4 pF	7 pF
Operating Temperature Range	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C
Package / Case	20-SOIC	20-SOIC	20-SOIC	20-SOIC	20-SOIC	20-SOIC
Packaging Type	Not specified	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)
AEC-Q100 Qualification	No	No	Yes	No	Yes	No

Engineering Selection Recommendations

Primary Recommendation: SN74LVC374ADWR

SN74LVC374ADWR is the MFR Recommended substitute from Texas Instruments with active product status. It maintains the same 74LVC series lineage and 20-SOIC package as the obsolete SN74LVC374AQDWREP. This part offers improved propagation delay (7 ns vs. 8.5 ns) and extended voltage supply range (1.65V ~ 3.6V), providing superior performance margins. Moisture Sensitivity Level 1 (Unlimited) matches the original specification.

Secondary Recommendation: CLVC374AQDWRG4Q1

CLVC374AQDWRG4Q1 is a parametric equivalent with active product status and AEC-Q100 automotive qualification. It matches the original operating temperature range (-40°C ~ 125°C) and propagation delay (8.5 ns @ 3.3V, 50pF). This part is suitable for applications requiring automotive-grade components or extended temperature operation.

Alternative Recommendations: 74LVC374AD,118 and 74LVC374AD-Q100J

Both Nexperia USA Inc. parts (74LVC374AD,118 and 74LVC374AD-Q100J) are active products with superior clock frequency (150 MHz) and improved propagation delay (7 ns). The 74LVC374AD-Q100J includes AEC-Q100 automotive qualification. These parts support extended operating temperature ranges (-40°C ~ 125°C) and are suitable for high-performance applications.

Alternative Recommendation: MC74LCX374DWR2G

MC74LCX374DWR2G from onsemi is an active product with 150 MHz clock frequency and matching propagation delay (8.5 ns). The 74LCX series maintains functional compatibility with the 74LVC family. Note that this part has Moisture Sensitivity Level 3 (168 Hours) and a reduced operating temperature range (-40°C ~ 85°C), which may require additional handling considerations in high-humidity environments.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74LVC374AQDWREP with SN74LVC374ADWR?

A: Yes. Both parts share the same 74LVC series, D-type flip-flop architecture, 8-bit configuration, tri-state output, and 20-SOIC package. SN74LVC374ADWR is the active product successor with improved electrical performance (7 ns propagation delay vs. 8.5 ns) and extended voltage supply range (1.65V ~ 3.6V).

Q: What is the difference between 74LVC and 74LCX series parts?

A: Both series are compatible D-type flip-flops with identical functional specifications and 20-SOIC packaging. The 74LCX series (MC74LCX374DWR2G) offers higher clock frequency (150 MHz) but has different moisture sensitivity handling (MSL 3 vs. MSL 1) and a narrower operating temperature range (-40°C ~ 85°C vs. -40°C ~ 125°C).

Q: Which substitute part should I use for automotive applications?

A: CLVC374AQDWRG4Q1 or 74LVC374AD-Q100J are qualified for automotive use with AEC-Q100 certification. Both maintain the required electrical specifications and support extended temperature operation (-40°C ~ 125°C).

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use the 20-SOIC (0.295", 7.50mm Width) surface mount package, ensuring mechanical compatibility. Packaging types vary: SN74LVC374ADWR and Nexperia parts are supplied in Tape & Reel (TR), while MC74LCX374DWR2G is supplied in Cut Tape (CT).

Q: What is the impact of Moisture Sensitivity Level differences?

A: SN74LVC374AQDWREP, SN74LVC374ADWR, CLVC374AQDWRG4Q1, and Nexperia parts have MSL 1 (Unlimited), requiring no special moisture handling. MC74LCX374DWR2G has MSL 3 (168 Hours), requiring storage in dry conditions and baking before reflow if exposed to humidity for extended periods.

Q: Can I use a part with higher clock frequency as a direct substitute?

A: Yes. Parts with 150 MHz clock frequency (74LVC374AD,118, 74LVC374AD-Q100J, MC74LCX374DWR2G) are fully compatible with designs specified for 100 MHz operation. Higher frequency capability provides performance margin without affecting circuit functionality.

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by: D-type flip-flop architecture, 1 element with 8-bit configuration, tri-state non-inverted outputs, positive edge trigger, 20-SOIC package, and electrical specifications including clock frequency ≥100 MHz, propagation delay ≤8.5 ns @ 3.3V/50pF, voltage supply range encompassing 2V ~ 3.6V, and output current ≥24 mA.

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