SN74LVC02APWRG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC02APWRG4 is a NOR Gate IC with 4 channels and 2 inputs per channel, manufactured by Texas Instruments in a 14-TSSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The device operates across a supply voltage range of 1.65V to 3.6V with low quiescent current and is suitable for low-voltage logic applications requiring NOR gate functionality.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	1.65V ~ 3.6V
Current - Quiescent (Max)	1 µA
Current - Output High, Low	24mA, 24mA
Max Propagation Delay @ 3.3V, 50pF	4.2ns
Operating Temperature	-40°C ~ 125°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution for the SN74LVC02APWRG4 is determined by strict equivalence in the following parameters: logic type (NOR Gate), number of circuits (4), number of inputs (2), package type (14-TSSOP), and mounting type (Surface Mount). Electrical compatibility is established through matching or overlapping supply voltage ranges, output current capabilities, and propagation delay specifications. Parts are grouped into three categories based on their relationship to the main part:

Parametric Equivalents (Texas Instruments SN74LVC02 series): Parts with identical electrical specifications and the same 74LVC series designation. These differ only in packaging format (Tape & Reel vs. Plastic Gull Wing).

Direct Manufacturer Equivalent (NXP 74LVC02APW,118): A functionally equivalent part from an alternative manufacturer with the same base product number and package, though with slightly different electrical tolerances.

Manufacturer Recommended Alternatives (Fairchild and onsemi 74LCX series): Parts from the 74LCX logic family that maintain core functionality with compatible electrical parameters but operate within a narrower supply voltage range (2V ~ 3.6V) and lower operating temperature maximum (85°C vs. 125°C).

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Voltage - Supply	Current - Quiescent (Max)	Max Propagation Delay @ 3.3V, 50pF	Operating Temperature	Packaging
SN74LVC02APWRG4	Texas Instruments	74LVC	Obsolete	1.65V ~ 3.6V	1 µA	4.2ns	-40°C ~ 125°C	Plastic Gull Wing
SN74LVC02APWR	Texas Instruments	74LVC	Active	1.65V ~ 3.6V	1 µA	4.2ns	-40°C ~ 125°C	Tape & Reel
SN74LVC02APWT	Texas Instruments	74LVC	Active	1.65V ~ 3.6V	1 µA	4.2ns	-40°C ~ 125°C	Tape & Reel
74LVC02APW,118	NXP Semiconductors	74LVC	Active	1.2V ~ 3.6V	40 µA	5.5ns @ 3.3V, 50pF	-40°C ~ 125°C	Bulk
74LCX02MTCX	Fairchild Semiconductor	74LCX	Active	2V ~ 3.6V	10 µA	5.2ns @ 3.3V, 50pF	-40°C ~ 85°C	Plastic Gull Wing
MC74LCX02DTG	onsemi	74LCX	Active	2V ~ 3.6V	10 µA	5.5ns @ 3.3V, 50pF	-40°C ~ 85°C	Tube
MC74LCX02DTR2G	onsemi	74LCX	Active	2V ~ 3.6V	10 µA	5.5ns @ 3.3V, 50pF	-40°C ~ 85°C	Tape & Reel

Engineering Selection Recommendations

For direct replacement with identical specifications: Select SN74LVC02APWR or SN74LVC02APWT. Both are active Texas Instruments products in the 74LVC series with matching electrical parameters and operating temperature range. The choice between these depends on packaging requirements: Tape & Reel format for automated assembly or alternative procurement channels.

For extended supply voltage range: The NXP 74LVC02APW,118 extends the lower supply voltage limit to 1.2V, providing additional design flexibility for ultra-low-voltage applications. Note that quiescent current increases to 40 µA and propagation delay extends to 5.5ns.

For active product status with compatible operation: The Fairchild 74LCX02MTCX and onsemi MC74LCX02DTG/MC74LCX02DTR2G are active alternatives. These parts operate within the 2V to 3.6V supply range and maintain the -40°C to 85°C temperature specification. Selection depends on packaging format availability and supply chain requirements. All three are ROHS3 compliant and carry REACH Unaffected status.

Compliance considerations: All substitute parts listed maintain RoHS3 compliance and REACH Unaffected status, consistent with the original part. Moisture Sensitivity Level (MSL) is 1 (Unlimited) across all options.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC02APWR directly replace SN74LVC02APWRG4 in existing designs?

A: Yes. SN74LVC02APWR is a parametric equivalent with identical electrical specifications and operating temperature range. The difference is packaging format (Tape & Reel vs. Plastic Gull Wing). Verify your assembly process accommodates the packaging change.

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

A: The 74LCX series operates within a narrower supply voltage range (2V ~ 3.6V minimum vs. 1.65V for 74LVC) and has a lower maximum operating temperature (85°C vs. 125°C). Use 74LCX parts only if your application operates within these constraints.

Q: Is the NXP 74LVC02APW,118 suitable for low-voltage applications below 1.65V?

A: Yes. The NXP part extends the lower supply voltage limit to 1.2V. However, quiescent current increases to 40 µA (vs. 1 µA for the original), and propagation delay increases to 5.5ns. Verify these changes are acceptable for your circuit.

Q: Do all substitute parts use the same 14-TSSOP package?

A: All parts use the 14-TSSOP package with identical physical dimensions (0.173", 4.40mm Width). Packaging format (Plastic Gull Wing, Tape & Reel, Tube, or Bulk) affects procurement and assembly handling, not PCB footprint compatibility.

Q: Are there temperature-related limitations when substituting with 74LCX parts?

A: Yes. The 74LCX series maximum operating temperature is 85°C, compared to 125°C for the original 74LVC part. If your application requires operation above 85°C, use only the Texas Instruments 74LVC series alternatives.

Q: What compliance certifications apply to all substitute parts?

A: All listed substitutes are ROHS3 compliant, REACH Unaffected, and carry Moisture Sensitivity Level 1 (Unlimited). Verify specific certifications required by your end-use application or regional requirements.

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