74LVC74ADB,118 Equivalent & Substitute Parts

Part Overview

The 74LVC74ADB,118 is a dual D-type flip-flop logic integrated circuit manufactured by Nexperia USA Inc. in a 14-SSOP surface mount package. This device features complementary outputs, positive edge triggering, and operates across a supply voltage range of 1.2V to 3.6V with a maximum clock frequency of 150 MHz. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

74LVC74ADB,118

Nexperia USA Inc.In Stock: 134074LVC74ADB,118 Datasheet

Current PartRFQ

74LVC74APW,118

NXP SemiconductorsIn Stock: 5701574LVC74APW,118 Datasheet

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SN74LVC74ADBR

Texas InstrumentsIn Stock: 2934SN74LVC74ADBR Datasheet

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SN74LVC74AQPWRG4Q1

Texas InstrumentsIn Stock: 2713SN74LVC74AQPWRG4Q1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74LVC74ADB,118 is determined by the following critical parameters: base product number (74LVC74), logic function (dual D-type flip-flop with complementary outputs), trigger type (positive edge), clock frequency (150 MHz), propagation delay (5.2ns @ 3.3V, 50pF), supply voltage range, output drive capability (24mA), and operating temperature range (-40°C ~ 125°C).

Substitute parts are grouped into two categories based on package type:

Package Type 1 - 14-TSSOP (0.173", 4.40mm Width): Parts with narrower package footprint while maintaining identical electrical specifications.

Package Type 2 - 14-SSOP (0.209", 5.30mm Width): Parts with identical package dimensions to the original part.

All substitute parts maintain the core 74LVC logic family specifications and are compatible with the original design when package constraints are satisfied.

Parameter Comparison

Engineering Selection Recommendations

For direct package replacement (14-SSOP): The SN74LVC74ADBR from Texas Instruments is the primary substitute. This part maintains identical package dimensions, electrical specifications, and operating parameters. The part is in active production status, ensuring long-term availability. Supply voltage range is 1.65V ~ 3.6V, which covers the typical operating range of the original part.

For space-constrained designs (14-TSSOP): Two options are available. The 74LVC74APW,118 from NXP Semiconductors provides a narrower package footprint (0.173" vs 0.209") while maintaining full electrical compatibility. The SN74LVC74AQPWRG4Q1 from Texas Instruments offers the same package advantage with automotive-grade qualification (AEC-Q100) for applications requiring automotive reliability standards.

Compliance considerations: All substitute parts maintain ROHS3 compliance and MSL Level 1 rating. The SN74LVC74AQPWRG4Q1 includes automotive qualification, making it suitable for automotive and mission-critical applications.

Frequently Asked Questions (FAQ)

Q: Can I use the 74LVC74APW,118 as a direct replacement for the 74LVC74ADB,118?

A: The 74LVC74APW,118 is electrically equivalent but uses a different package (14-TSSOP vs 14-SSOP). If your PCB layout accommodates the narrower 14-TSSOP package, this part is fully compatible. The footprint is smaller, which may require PCB redesign.

Q: What is the difference between 14-SSOP and 14-TSSOP packages?

A: The 14-SSOP package is 0.209" (5.30mm) wide, while the 14-TSSOP package is 0.173" (4.40mm) wide. Both are 14-pin surface mount packages with the same pin pitch and height. The TSSOP variant offers a narrower footprint for space-constrained applications.

Q: Are there supply voltage differences between the substitutes?

A: The original 74LVC74ADB,118 operates from 1.2V to 3.6V. The SN74LVC74ADBR operates from 1.65V to 3.6V, and the SN74LVC74AQPWRG4Q1 operates from 2V to 3.6V. For applications requiring operation below 1.65V, the 74LVC74APW,118 (1.2V ~ 3.6V) is the appropriate choice.

Q: Which substitute should I use for automotive applications?

A: The SN74LVC74AQPWRG4Q1 is qualified to AEC-Q100 automotive standards and is the recommended choice for automotive applications.

Q: Are all substitutes in active production?

A: Yes. The original 74LVC74ADB,118 is obsolete, but all three substitute parts are in active production status, ensuring availability for new designs and ongoing procurement.

Q: Do all parts have the same propagation delay?

A: Yes. All substitute parts maintain the same maximum propagation delay of 5.2ns at 3.3V with 50pF load, ensuring timing compatibility with the original design.