74LVC574AD,118 Equivalent & Substitute Parts

Part Overview

The 74LVC574AD,118 is a D-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., designed for 8-bit data storage and transfer applications. This device features positive edge triggering, tri-state non-inverted outputs, and operates across a supply voltage range of 1.65V to 3.6V. The part is currently in active production status and is RoHS3 compliant. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative packaging or qualification requirements while maintaining functional compatibility.

Key Parameters

Parameter	Value
Function	D-Type Flip Flop, 1 Element, 8 Bit
Output Type	Tri-State, Non-Inverted
Trigger Type	Positive Edge
Clock Frequency	200 MHz
Max Propagation Delay @ 3.3V, 50pF	7 ns
Output Current (High/Low)	24 mA / 24 mA
Supply Voltage Range	1.65V ~ 3.6V
Quiescent Current	10 µA
Input Capacitance	5 pF
Operating Temperature	-40°C ~ 125°C
Package	20-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 74LVC574AD,118 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Functional Parameters:

D-Type flip-flop architecture with 1 element, 8-bit configuration
Tri-state, non-inverted output configuration
Positive edge trigger mechanism
20-SOIC package form factor (0.295", 7.50mm Width)

Electrical Compatibility Criteria:

Supply voltage range must encompass or overlap with 1.65V ~ 3.6V
Output current capability of 24 mA minimum (both high and low)
Propagation delay performance at 3.3V, 50pF load
Operating temperature range of -40°C ~ 125°C minimum

Compliance & Environmental:

RoHS3 compliance
REACH unaffected status
Moisture sensitivity level acceptable for standard handling

Substitute parts meeting these criteria are functionally interchangeable at the circuit level, though packaging format and supplier device package may vary.

Parameter Comparison

Part Number	Manufacturer	Series	Clock Frequency	Propagation Delay @ 3.3V, 50pF	Supply Voltage	Quiescent Current	Input Capacitance	Operating Temperature	Packaging	MSL
74LVC574AD,118	Nexperia USA Inc.	74LVC	200 MHz	7 ns	1.65V ~ 3.6V	10 µA	5 pF	-40°C ~ 125°C	Cut Tape (CT) & Digi-Reel®	1
CLVC574AQDWRG4Q1	Texas Instruments	74LVC	150 MHz	7 ns	2V ~ 3.6V	10 µA	4 pF	-40°C ~ 125°C	Tape & Reel (TR)	1
MC74LCX574DWR2G	onsemi	74LCX	150 MHz	8.5 ns	2V ~ 3.6V	10 µA	7 pF	-40°C ~ 85°C	Cut Tape (CT)	3
SN74LVC574ADW	Texas Instruments	74LVC	150 MHz	6.8 ns	1.65V ~ 3.6V	10 µA	4 pF	-40°C ~ 125°C	Tube	1
SN74LVC574ADWR	Texas Instruments	74LVC	150 MHz	6.8 ns	1.65V ~ 3.6V	1.5 µA	4 pF	-40°C ~ 125°C	Tape & Reel (TR)	1
SN74LVC574AQDWRQ1	Texas Instruments	74LVC	150 MHz	7 ns	2V ~ 3.6V	10 µA	4 pF	-40°C ~ 125°C	Tape & Reel (TR)	1

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

SN74LVC574ADW and SN74LVC574ADWR are direct functional equivalents from Texas Instruments within the 74LVC series. Both maintain the full supply voltage range of 1.65V ~ 3.6V, matching the original part's lower voltage specification. SN74LVC574ADWR offers reduced quiescent current (1.5 µA vs. 10 µA) and is supplied in Tape & Reel format for automated assembly. SN74LVC574ADW is supplied in Tube packaging.

CLVC574AQDWRG4Q1 and SN74LVC574AQDWRQ1 are automotive-qualified variants (AEC-Q100) with identical functional performance. Both are limited to 2V minimum supply voltage and are suitable for applications requiring automotive-grade components.

Secondary Substitute (Performance Trade-off):

MC74LCX574DWR2G from onsemi operates within the 74LCX series and exhibits slightly higher propagation delay (8.5 ns vs. 7 ns) and reduced operating temperature range (-40°C ~ 85°C vs. -40°C ~ 125°C). Moisture sensitivity level is elevated to MSL 3 (168 Hours). This part is suitable for applications where the performance and environmental specifications are acceptable.

Compliance Status:

All substitute parts maintain RoHS3 compliance and REACH unaffected status, consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC574ADWR replace 74LVC574AD,118 in all applications?

A: SN74LVC574ADWR is functionally compatible for circuits operating within the 1.65V ~ 3.6V supply range. The reduced quiescent current (1.5 µA) provides a power consumption advantage. Verify that your application does not depend on the specific packaging format (Tape & Reel vs. Cut Tape & Digi-Reel).

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

A: Both are D-type flip-flop logic families with identical pinout and package. The 74LCX series (MC74LCX574DWR2G) exhibits slightly higher propagation delay and narrower operating temperature range. Selection depends on timing margin and thermal environment requirements.

Q: Are automotive-qualified parts (CLVC574AQDWRG4Q1, SN74LVC574AQDWRQ1) suitable for non-automotive applications?

A: Yes. Automotive-qualified parts meet or exceed standard industrial specifications and are fully compatible with non-automotive designs. The AEC-Q100 qualification provides additional reliability assurance.

Q: What is the impact of MSL 3 (MC74LCX574DWR2G) versus MSL 1 on handling and storage?

A: MSL 1 parts have unlimited shelf life under controlled conditions. MSL 3 parts require reflow within 168 hours of moisture exposure. For standard manufacturing environments with proper moisture control, this difference is typically not significant. Verify your assembly process capabilities.

Q: Can I use SN74LVC574ADW (Tube packaging) in automated pick-and-place assembly?

A: Tube packaging is designed for manual handling or specialized feeder systems. For high-volume automated assembly, Tape & Reel formats (SN74LVC574ADWR, CLVC574AQDWRG4Q1, SN74LVC574AQDWRQ1) are recommended.

Q: What is the minimum supply voltage for each substitute part?

A: 74LVC574AD,118, SN74LVC574ADW, and SN74LVC574ADWR support 1.65V minimum. CLVC574AQDWRG4Q1 and SN74LVC574AQDWRQ1 require 2V minimum. MC74LCX574DWR2G requires 2V minimum. Verify your circuit's lowest operating voltage against the selected part's specification.

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