SN74HC02QPWREP NOR Gate IC Equivalent & Substitute Parts

Part Overview

The SN74HC02QPWREP is a 4-channel NOR gate logic IC manufactured by Texas Instruments in a 14-TSSOP surface mount package. This device implements four independent 2-input NOR gates and operates across a 2V to 6V supply voltage range. The part is currently in active production status with 1086 units in stock.

Substitute parts are necessary when the primary part number becomes unavailable, when specific automotive qualifications are required, or when alternative manufacturers' equivalents offer improved performance characteristics or better inventory availability.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	2V ~ 6V
Current - Quiescent (Max)	2 µA
Current - Output High/Low	5.2mA / 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V
Max Propagation Delay @ 6V, 50pF	15ns
Operating Temperature	-40°C ~ 125°C
Package Type	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74HC02QPWREP is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

Logic Type: NOR Gate (4 channels, 2 inputs per channel)
Package Type: 14-TSSOP surface mount
Voltage Supply Range: 2V ~ 6V
Input/Output Logic Levels: 0.5V ~ 1.8V (Low), 1.5V ~ 4.2V (High)
Output Current: 5.2mA High/Low
RoHS3 Compliance
Moisture Sensitivity Level: 1

Performance Variation Allowances:

Quiescent Current: 1 µA to 2 µA (lower values acceptable)
Propagation Delay: 13ns to 15ns @ 6V, 50pF (lower values acceptable)
Operating Temperature: -40°C to -55°C minimum; 85°C to 125°C maximum (extended ranges acceptable)

Qualification Additions:

Automotive grade (AEC-Q100) and non-automotive variants are interchangeable for non-automotive applications
Packaging format variations (Tape & Reel vs. Cut Tape) do not affect electrical compatibility

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuits/Inputs	Supply Voltage	Quiescent Current (Max)	Propagation Delay @ 6V	Operating Temp	Package	Status	Automotive Grade
SN74HC02QPWREP	Texas Instruments	NOR Gate	4 / 2	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-TSSOP	Active	No
SN74HC02QPWRG4Q1	Texas Instruments	NOR Gate	4 / 2	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-TSSOP	Active	Yes (AEC-Q100)
SN74HC02QPWRQ1	Texas Instruments	NOR Gate	4 / 2	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-TSSOP	Active	Yes (AEC-Q100)
MC74HC02ADTR2G	onsemi	NOR Gate	4 / 2	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-TSSOP	Active	No
MM74HC02MTCX	onsemi	NOR Gate	4 / 2	2V ~ 6V	2 µA	15ns	-40°C ~ 85°C	14-TSSOP	Active	No
NLV74HC02ADTR2G	onsemi	NOR Gate	4 / 2	2V ~ 6V	1 µA	13ns	-55°C ~ 125°C	14-TSSOP	Obsolete	Yes (AEC-Q100)
74HC02PW,118	Nexperia USA Inc.	NOR Gate	4 / 2	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-TSSOP	Active	No
74HC02PW-Q100,118	Nexperia USA Inc.	NOR Gate	4 / 2	2V ~ 6V	2 µA	15ns	-40°C ~ 125°C	14-TSSOP	Active	Yes (AEC-Q100)

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Use 74HC02PW,118 (Nexperia) or SN74HC02QPWRG4Q1 / SN74HC02QPWRQ1 (Texas Instruments automotive variants) when the primary part is unavailable. These maintain identical electrical performance and operating temperature ranges.

For Improved Performance Characteristics: MC74HC02ADTR2G and NLV74HC02ADTR2G (both onsemi) offer reduced quiescent current (1 µA vs. 2 µA) and faster propagation delay (13ns vs. 15ns). These are suitable for applications where lower power consumption or faster switching is beneficial. MC74HC02ADTR2G extends the minimum operating temperature to -55°C.

For Automotive Applications: Select SN74HC02QPWRG4Q1, SN74HC02QPWRQ1, 74HC02PW-Q100,118, or NLV74HC02ADTR2G. These variants carry AEC-Q100 qualification and are appropriate for automotive-grade designs.

For Temperature-Constrained Applications: MM74HC02MTCX operates only to 85°C maximum and should be avoided if the full -40°C to 125°C range is required. NLV74HC02ADTR2G and MC74HC02ADTR2G support extended temperature ranges (-55°C minimum).

Inventory Considerations: MC74HC02ADTR2G has the highest stock availability (50,200 units). SN74HC02QPWRG4Q1 and 74HC02PW-Q100,118 also maintain substantial inventory (2,847 and 2,907 units respectively).

Obsolescence Status: NLV74HC02ADTR2G is marked obsolete and should be used only when no active alternatives meet application requirements.

Frequently Asked Questions (FAQ)

Q: Can I use an automotive-grade part (AEC-Q100) in a non-automotive application? A: Yes. Automotive-qualified parts meet or exceed standard commercial specifications and are fully compatible with non-automotive designs. The qualification adds manufacturing rigor but does not restrict use.

Q: What is the difference between the Texas Instruments variants (QPWREP, QPWRG4Q1, QPWRQ1)? A: All three are electrically identical 4-channel NOR gates in 14-TSSOP packages. QPWRG4Q1 and QPWRQ1 carry AEC-Q100 automotive qualification; QPWREP does not. The suffix designations reflect internal Texas Instruments manufacturing and qualification tracking.

Q: Why do onsemi parts show lower quiescent current and faster propagation delay? A: MC74HC02ADTR2G and NLV74HC02ADTR2G represent improved silicon process generations. The 1 µA quiescent current and 13ns propagation delay are within the allowed substitution parameters and represent performance enhancements over the 2 µA / 15ns baseline.

Q: Is the 14-TSSOP package identical across all manufacturers? A: Yes. The 14-TSSOP package specification (0.173" width, 4.40mm) is standardized. All listed parts use the same footprint and are mechanically interchangeable on PCBs.

Q: Can I substitute MM74HC02MTCX if my application requires operation above 85°C? A: No. MM74HC02MTCX is rated only to 85°C maximum. For applications requiring the full -40°C to 125°C range, use SN74HC02QPWREP, SN74HC02QPWRG4Q1, SN74HC02QPWRQ1, 74HC02PW,118, 74HC02PW-Q100,118, MC74HC02ADTR2G, or NLV74HC02ADTR2G.

Q: What does RoHS3 compliance mean for this part? A: RoHS3 (Restriction of Hazardous Substances Directive 3) compliance confirms the part contains no lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers above specified thresholds. All listed substitutes maintain ROHS3 compliance.

Q: Is NLV74HC02ADTR2G still available despite being marked obsolete? A: The part shows 3,332 units in current inventory despite obsolete status. However, obsolete designation indicates the manufacturer has discontinued production. Existing stock may be available, but long-term availability is not guaranteed. Active alternatives should be prioritized for new designs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message