74LVC574AD,112 Equivalent & Substitute Parts

Part Overview

The 74LVC574AD,112 is a D-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc., designed for 8-bit data storage and transfer applications. This component features tri-state, non-inverted outputs with positive edge triggering and operates across a 1.65V to 3.6V supply voltage range. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and system maintenance. Active alternatives from major manufacturers provide functional equivalence while maintaining compatibility with existing circuit designs.

Substiute Parts

74LVC574AD,112

Nexperia USA Inc.In Stock: 112274LVC574AD,112 Datasheet

Current PartRFQ

CLVC574AQDWRG4Q1

Texas InstrumentsIn Stock: 2864CLVC574AQDWRG4Q1 Datasheet

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MC74LCX574DWR2G

onsemiIn Stock: 2138MC74LCX574DWR2G Datasheet

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SN74LVC574ADW

Texas InstrumentsIn Stock: 2136SN74LVC574ADW Datasheet

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SN74LVC574ADWR

Texas InstrumentsIn Stock: 4649SN74LVC574ADWR Datasheet

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SN74LVC574AQDWRQ1

Texas InstrumentsIn Stock: 2560SN74LVC574AQDWRQ1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74LVC574AD,112 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Package type: 20-SOIC (0.295", 7.50mm Width) — all substitutes must use identical package
• Function: D-Type flip-flop with 8-bit configuration
• Output configuration: Tri-state, non-inverted outputs
• Trigger mechanism: Positive edge triggering
• Supply voltage range: Must encompass or be compatible with 1.65V ~ 3.6V
• Propagation delay: Maximum 7ns @ 3.3V, 50pF
• Output current capability: 24mA high and low
• Quiescent current: 10 µA maximum

Allowed Substitution Criteria: Substitute parts must maintain identical package geometry, pin configuration, and functional behavior. Variations in clock frequency (150 MHz vs. 200 MHz), input capacitance (4 pF vs. 5 pF), or operating temperature upper limits (85°C vs. 125°C) are acceptable provided the substitute meets or exceeds the minimum performance requirements for the application. Supply voltage ranges may differ if the substitute range encompasses the original specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

SN74LVC574ADW and SN74LVC574ADWR from Texas Instruments are the preferred substitutes. Both maintain the full supply voltage range of 1.65V ~ 3.6V, matching the original 74LVC574AD,112 specification. SN74LVC574ADWR offers superior quiescent current performance at 1.5 µA and is available in tape and reel packaging for high-volume production. Both parts are active products with full temperature range support (-40°C ~ 125°C) and RoHS3 compliance.

Automotive-Grade Alternatives:

CLVC574AQDWRG4Q1 and SN74LVC574AQDWRQ1 are qualified to AEC-Q100 automotive standards. These parts are suitable for applications requiring automotive-grade components. Note that both have a minimum supply voltage of 2V, which excludes operation below this threshold compared to the original 1.65V minimum.

Secondary Substitute (Temperature Limitation):

MC74LCX574DWR2G from onsemi is functionally compatible but operates only to 85°C maximum, compared to the 125°C upper limit of the original part. This substitute is appropriate only for applications with operating temperature requirements not exceeding 85°C. Additionally, this part carries MSL-3 moisture sensitivity, requiring controlled storage conditions (168-hour floor life after moisture exposure).

Substitution Priority:

1. SN74LVC574ADWR (active, full voltage range, lowest quiescent current)
2. SN74LVC574ADW (active, full voltage range, tube packaging)
3. SN74LVC574AQDWRQ1 (active, automotive-grade, AEC-Q100)
4. CLVC574AQDWRG4Q1 (active, automotive-grade, AEC-Q100)
5. MC74LCX574DWR2G (active, temperature-limited to 85°C, MSL-3)

Frequently Asked Questions (FAQ)

Q: Can I use SN74LVC574ADWR as a direct replacement for 74LVC574AD,112?

A: Yes. SN74LVC574ADWR is a direct functional and pin-compatible substitute. It maintains identical package geometry (20-SOIC), electrical specifications (1.65V ~ 3.6V supply, 24mA output current, positive edge triggering), and operating temperature range (-40°C ~ 125°C). The part is currently in active production status.

Q: What is the difference between SN74LVC574ADW and SN74LVC574ADWR?

A: Both parts are electrically identical. The primary difference is packaging: SN74LVC574ADW is supplied in tube packaging, while SN74LVC574ADWR is supplied in tape and reel format. Tape and reel packaging is standard for automated assembly and high-volume production. Select based on your assembly process requirements.

Q: Why does MC74LCX574DWR2G have a lower maximum operating temperature?

A: MC74LCX574DWR2G is specified to -40°C ~ 85°C, whereas the original part operates to 125°C. This is a design characteristic of the onsemi part. Use this substitute only if your application does not require operation above 85°C. For applications requiring the full 125°C range, select alternatives from the Texas Instruments or Nexperia product lines.

Q: What does MSL-3 (168 Hours) mean for MC74LCX574DWR2G?

A: MSL-3 indicates Moisture Sensitivity Level 3, with a floor life of 168 hours after exposure to moisture. This part requires controlled storage in dry conditions and has a limited shelf life after opening the moisture barrier bag. MSL-1 parts (all other substitutes listed) have unlimited floor life and are more suitable for standard warehouse and production environments.

Q: Are the automotive-grade parts (CLVC574AQDWRG4Q1 and SN74LVC574AQDWRQ1) suitable for non-automotive applications?

A: Yes. Automotive-grade parts meet AEC-Q100 qualification standards, which impose stricter reliability and quality requirements than standard industrial grades. These parts are fully compatible with non-automotive applications and provide enhanced reliability margins. The trade-off is typically higher cost and longer lead times.

Q: What is the significance of the supply voltage range difference (1.65V vs. 2V minimum)?

A: The original 74LVC574AD,112 operates down to 1.65V, while CLVC574AQDWRG4Q1 and SN74LVC574AQDWRQ1 operate down to 2V minimum. If your circuit operates below 2V, use SN74LVC574ADW, SN74LVC574ADWR, or MC74LCX574DWR2G. For applications operating at 2V or above, all substitutes are acceptable.

Q: Can I mix different substitute parts in the same design?

A: Yes, provided all parts meet your application's electrical and environmental requirements. However, for production consistency and supply chain management, it is recommended to standardize on a single substitute part number. If multiple parts are used, ensure they are qualified and tested together in your specific application circuit.

Q: What is the propagation delay difference, and does it matter?

A: Propagation delays range from 6.8ns to 8.5ns at 3.3V with 50pF load. For most digital logic applications, these differences are negligible. If your design has critical timing requirements with propagation delay margins less than 1.5ns, verify the specific substitute part meets your timing budget before implementation.