SN74LVC574AQPWREP Equivalent & Substitute Parts

Part Overview

The SN74LVC574AQPWREP is a D-type flip-flop logic integrated circuit manufactured by Texas Instruments, designed for 8-bit data storage and transfer applications. This device operates as a single element with 8 bits per element, featuring tri-state non-inverted outputs and positive edge triggering. The part is currently in active production status with 895 pieces available in new original stock.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging or supply chain options are required, or when design specifications allow for compatible alternatives from different manufacturers or product lines within the 74LVC/74LCX logic families.

Substiute Parts

SN74LVC574AQPWREP

Texas InstrumentsIn Stock: 913SN74LVC574AQPWREP Datasheet

Current PartRFQ

CLVC574AQPWRG4Q1

Texas InstrumentsIn Stock: 8340CLVC574AQPWRG4Q1 Datasheet

Parametric EquivalentRFQ

MC74LCX574DTR2G

onsemiIn Stock: 85415MC74LCX574DTR2G Datasheet

DirectRFQ

74LCX574FT

Toshiba Semiconductor and StorageIn Stock: 205674LCX574FT Datasheet

MFR RecommendedRFQ

74LVC574APW,118

NXP SemiconductorsIn Stock: 19580174LVC574APW,118 Datasheet

MFR RecommendedRFQ

74LVC574AT20-13

Diodes IncorporatedIn Stock: 1017174LVC574AT20-13 Datasheet

MFR RecommendedRFQ

MC74LCX574DTG

onsemiIn Stock: 1296MC74LCX574DTG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74LVC574AQPWREP are classified based on strict adherence to the following critical parameters:

Primary Substitution Criteria:

• 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-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount

Secondary Compatibility Parameters:

• Clock Frequency: 150 MHz or higher
• Voltage - Supply: 2V ~ 3.6V range (minimum)
• Current - Output High/Low: 24 mA or higher
• Operating Temperature: -40°C ~ 125°C or compatible range
• RoHS Status: ROHS3 Compliant

Substitute parts are grouped into three categories: Parametric Equivalents (identical electrical and mechanical specifications), Direct Manufacturer Alternatives (different manufacturer, equivalent performance), and MFR Recommended Alternatives (manufacturer-approved substitutes with minor specification variations).

Parameter Comparison

Engineering Selection Recommendations

CLVC574AQPWRG4Q1 (Texas Instruments - Parametric Equivalent)

This part is a direct parametric equivalent with identical electrical specifications to the SN74LVC574AQPWREP. The primary distinction is automotive-grade qualification (AEC-Q100) and higher inventory availability (8300 pieces). Selection is appropriate for applications requiring automotive-grade components or when higher stock levels are advantageous. Both parts maintain ROHS3 compliance and MSL 1 rating.

MC74LCX574DTR2G (onsemi - Direct Manufacturer Alternative)

This onsemi part operates within compatible parameters with slightly higher propagation delay (8.5 ns vs. 7 ns) and input capacitance (7 pF vs. 4 pF). Operating temperature range is reduced to -40°C ~ 85°C. Selection is appropriate when onsemi supply chain preference exists or when the reduced temperature range is acceptable. Excellent inventory availability (85400 pieces) supports supply chain continuity.

74LCX574FT (Toshiba - MFR Recommended Alternative)

Toshiba's offering provides extended lower voltage supply range (1.65V minimum vs. 2V) with equivalent performance characteristics. Operating temperature is limited to -40°C ~ 85°C. This part is suitable for applications requiring lower voltage operation. Current inventory is moderate (2045 pieces).

74LVC574APW,118 (NXP Semiconductors - MFR Recommended Alternative)

NXP's part features the highest clock frequency specification (200 MHz vs. 150 MHz) and extended lower voltage supply range (1.65V minimum). Packaging is bulk rather than tape & reel. This part is suitable for high-speed applications and offers the largest inventory (195695 pieces). Operating temperature range extends to -40°C ~ 125°C, matching the primary part.

74LVC574AT20-13 (Diodes Incorporated - MFR Recommended Alternative)

Diodes' offering maintains core functionality with slightly reduced clock frequency (125 MHz) and lower propagation delay specification (7.1 ns @ 30pF). Moisture sensitivity level is elevated to MSL 3 (168 hours), requiring controlled storage conditions. Operating temperature range is -40°C ~ 125°C. This part is suitable when MSL 3 handling procedures are established. Inventory is adequate (10100 pieces).

MC74LCX574DTG (onsemi - Obsolete Status)

This part is marked as obsolete and should not be selected for new designs. While electrical parameters are compatible, the obsolete status indicates discontinued production and limited future availability (1279 pieces). Selection is only appropriate for legacy system maintenance or repair applications.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for the SN74LVC574AQPWREP?

A: All listed parts share the same 20-TSSOP package and core D-type flip-flop functionality with 8-bit configuration. However, substitution depends on your specific application requirements. Parts with identical electrical specifications (CLVC574AQPWRG4Q1) are direct replacements. Parts with variations in propagation delay, clock frequency, or operating temperature range require design verification to confirm compatibility with your circuit timing and environmental requirements.

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

A: Both series are compatible logic families with similar functionality. The 74LCX series (onsemi, Toshiba) typically exhibits slightly higher propagation delays (8.5 ns vs. 7 ns) and higher input capacitance (7 pF vs. 4 pF) compared to 74LVC parts. The 74LVC series maintains faster switching characteristics. Both operate within the 2V ~ 3.6V supply range and are suitable for low-voltage logic applications.

Q: Does packaging format affect substitution?

A: All substitute parts use the same 20-TSSOP surface mount package, ensuring mechanical compatibility with existing PCB layouts. Packaging format differences (Tape & Reel, Bulk, Tube) relate only to supply and handling methods, not electrical or mechanical performance. Selection between packaging formats depends on procurement volume and assembly process requirements.

Q: What is the significance of the MSL (Moisture Sensitivity Level) rating?

A: MSL 1 (Unlimited) parts like the primary SN74LVC574AQPWREP and most substitutes require no special moisture control during storage and handling. The 74LVC574AT20-13 carries MSL 3 (168 hours), requiring storage in dry conditions and limiting the time the part can be exposed to ambient humidity before soldering. MSL 3 parts require controlled storage in moisture barrier bags with desiccant and may require baking before assembly.

Q: Why is the MC74LCX574DTG marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. While existing inventory may be available, future supply cannot be guaranteed. This part should not be selected for new designs. It is suitable only for maintenance or repair of existing systems where the part is already in use.

Q: Which substitute offers the best performance for high-speed applications?

A: The 74LVC574APW,118 from NXP offers the highest clock frequency specification at 200 MHz, compared to 150 MHz for most alternatives. This part also provides the fastest propagation delay (7 ns @ 50pF) and extended lower voltage supply range (1.65V minimum). However, design verification is necessary to confirm that the bulk packaging format and NXP supply chain are compatible with your procurement process.

Q: Are all these parts RoHS compliant?

A: All listed parts except 74LVC574APW,118 explicitly state ROHS3 compliance. The NXP part does not specify RoHS status in the provided data. If RoHS compliance is a mandatory requirement, confirm with the supplier before selection. The primary part SN74LVC574AQPWREP and most alternatives (CLVC574AQPWRG4Q1, MC74LCX574DTR2G, 74LCX574FT, 74LVC574AT20-13, MC74LCX574DTG) are confirmed ROHS3 compliant.