74LVC02AD,112 NOR Gate IC Equivalent & Substitute Parts

Part Overview

The 74LVC02AD,112 is a 4-channel 2-input NOR gate logic IC manufactured by Nexperia USA Inc. in a 14-SOIC surface mount package. This component operates across a supply voltage range of 1.2V to 3.6V with a maximum quiescent current of 40 µA and propagation delay of 4.4ns at 3.3V with 50pF load. The part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	1.2V ~ 3.6V
Current - Quiescent (Max)	40 µA
Current - Output High/Low	24mA / 24mA
Max Propagation Delay @ 3.3V, 50pF	4.4ns
Operating Temperature Range	-40°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74LVC02AD,112 is determined by the following critical parameters:

Logic function: 4-channel 2-input NOR gate configuration
Package compatibility: 14-SOIC surface mount form factor
Supply voltage overlap: Minimum 1.2V to 3.6V range
Output drive capability: 24mA minimum for both high and low states
Operating temperature range: -40°C to 125°C minimum
Propagation delay: Maximum 5.5ns at 3.3V with 50pF load
RoHS3 compliance and MSL rating

Substitute parts are grouped into two categories based on voltage supply specifications and quiescent current characteristics. The 74LCX series (Fairchild and onsemi) operates at 2V to 3.6V with lower quiescent current (10 µA), while the 74LVC series (Texas Instruments) maintains the extended lower voltage range (1.65V to 3.6V) with significantly reduced quiescent current (1 µA).

Parameter Comparison

Part Number	Manufacturer	Series	Voltage Supply	Quiescent Current (Max)	Output Current H/L	Propagation Delay @ 3.3V, 50pF	Operating Temp	Package	Status
74LVC02AD,112	Nexperia USA Inc.	74LVC	1.2V ~ 3.6V	40 µA	24mA / 24mA	4.4ns	-40°C ~ 125°C	14-SOIC	Obsolete
74LCX02M	Fairchild Semiconductor	74LCX	2V ~ 3.6V	10 µA	24mA / 24mA	5.2ns	-40°C ~ 85°C	14-SOIC	Active
MC74LCX02DG	onsemi	74LCX	2V ~ 3.6V	10 µA	24mA / 24mA	5.5ns	-40°C ~ 85°C	14-SOIC	Obsolete
MC74LCX02DR2G	onsemi	74LCX	2V ~ 3.6V	10 µA	24mA / 24mA	5.5ns	-40°C ~ 85°C	14-SOIC	Active
SN74LVC02AD	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	24mA / 24mA	4.2ns	-40°C ~ 125°C	14-SOIC	Active
SN74LVC02ADR	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	24mA / 24mA	4.2ns	-40°C ~ 125°C	14-SOIC	Active
SN74LVC02ADT	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	24mA / 24mA	4.2ns	-40°C ~ 125°C	14-SOIC	Discontinued at DiGi Electronics
SN74LVC02ANS	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	24mA / 24mA	4.2ns	-40°C ~ 125°C	14-SO (0.209", 5.30mm)	Active
SN74LVC02ANSR	Texas Instruments	74LVC	1.65V ~ 3.6V	1 µA	24mA / 24mA	4.2ns	-40°C ~ 125°C	14-SO (0.209", 5.30mm)	Active
SN74LVC02AQDRG4Q1	Texas Instruments	74LVC	2V ~ 3.6V	10 µA	24mA / 24mA	5.5ns	-40°C ~ 125°C	14-SOIC	Active
SN74LVC02AQDRQ1	Texas Instruments	74LVC	2V ~ 3.6V	10 µA	24mA / 24mA	5.5ns	-40°C ~ 125°C	14-SOIC	Active

Engineering Selection Recommendations

For applications requiring direct replacement of the 74LVC02AD,112 with minimal design changes, the SN74LVC02ADR and SN74LVC02AD from Texas Instruments are preferred. Both maintain the extended supply voltage range (1.65V to 3.6V), superior propagation delay performance (4.2ns), and reduced quiescent current (1 µA). These parts are active products with full RoHS3 compliance and unlimited moisture sensitivity rating.

The SN74LVC02ADR is recommended for production environments due to its tape and reel packaging format, while SN74LVC02AD is available in tube packaging. Both support the full -40°C to 125°C operating temperature range of the original part.

For automotive applications requiring AEC-Q100 qualification, the SN74LVC02AQDRQ1 and SN74LVC02AQDRG4Q1 are available. These parts operate at 2V to 3.6V with 10 µA quiescent current and maintain the -40°C to 125°C temperature range.

The 74LCX series (74LCX02M from Fairchild and MC74LCX02DR2G from onsemi) are suitable substitutes where the minimum supply voltage of 2V is acceptable. The MC74LCX02DR2G is active and available in tape and reel format. These parts feature lower quiescent current (10 µA) but are limited to -40°C to 85°C operating temperature.

Package considerations: The SN74LVC02ANS and SN74LVC02ANSR use a wider 14-SO package (0.209", 5.30mm width) compared to the standard 14-SOIC (0.154", 3.90mm width). PCB layout modifications are required for these variants.

Frequently Asked Questions (FAQ)

Q: Can the 74LCX02M replace the 74LVC02AD,112 in all applications?

A: The 74LCX02M is functionally compatible for logic operation but has two limitations. The minimum supply voltage is 2V instead of 1.2V, and the maximum operating temperature is 85°C instead of 125°C. Verify your application does not require operation below 2V or above 85°C before substitution.

Q: What is the difference between SN74LVC02AD, SN74LVC02ADR, and SN74LVC02ADT?

A: These are the same die with different packaging formats. SN74LVC02AD is tube packaging, SN74LVC02ADR is tape and reel, and SN74LVC02ADT is a variant with discontinued availability at DiGi Electronics. Electrical specifications are identical. Select based on your procurement and assembly requirements.

Q: Are the SN74LVC02ANS and SN74LVC02ANSR direct pin-compatible replacements?

A: These parts have identical pin counts and logic function but use a wider 14-SO package (0.209" width) versus the standard 14-SOIC (0.154" width). PCB footprint modifications are required. Verify your board layout can accommodate the wider package before substitution.

Q: Why do the automotive-grade parts (SN74LVC02AQDRQ1, SN74LVC02AQDRG4Q1) have different electrical specifications?

A: The automotive variants operate at 2V to 3.6V with 10 µA quiescent current and 5.5ns propagation delay. These specifications reflect AEC-Q100 qualification requirements. They are suitable only for applications where the 2V minimum supply voltage is acceptable.

Q: Is the 74LVC02AD,112 truly obsolete, or can it still be sourced?

A: The part is classified as obsolete by the manufacturer. However, 772 pieces are reported in stock. For new designs and long-term production, transition to active alternatives such as SN74LVC02ADR or MC74LCX02DR2G to ensure supply chain continuity.

Q: What is the impact of quiescent current differences between substitute parts?

A: The original 74LVC02AD,112 draws 40 µA quiescent current. Texas Instruments 74LVC series reduces this to 1 µA, while 74LCX series draws 10 µA. Lower quiescent current reduces standby power consumption. Select based on your power budget requirements.

Q: Can I use the MC74LCX02DG (obsolete) as a substitute?

A: The MC74LCX02DG is functionally compatible but is classified as obsolete. While 1682 pieces are in stock, the MC74LCX02DR2G (active status) is the recommended alternative from onsemi for new designs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message