SN74HC02PW Equivalent & Substitute Parts

Part Overview

The SN74HC02PW is a 4-channel NOR gate logic IC manufactured by Texas Instruments in 14-TSSOP surface mount packaging. This part is discontinued at DiGi Electronics but remains available through inventory channels. The SN74HC02PW operates across a 2V to 6V supply voltage range and is suitable for general-purpose logic applications requiring NOR gate functionality. Due to its discontinued status, equivalent substitute parts from active manufacturers are 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	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 ~ 85°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SN74HC02PW is determined by strict equivalence across the following parameters: logic type (NOR gate), circuit count (4 channels), input count (2 inputs per gate), supply voltage range (2V ~ 6V minimum), output current capability (5.2mA minimum), package type (14-TSSOP), and RoHS compliance status. Parts meeting these criteria are functionally interchangeable at the circuit level. Variations in quiescent current, propagation delay, and operating temperature range do not prevent substitution but indicate performance differences that may be relevant to specific applications.

Parameter Comparison

Part Number	Manufacturer	Product Status	Quiescent Current (Max)	Propagation Delay @ 6V, 50pF	Operating Temperature	Packaging	Inventory
SN74HC02PW	Texas Instruments	Discontinued	2 µA	15ns	-40°C ~ 85°C	Tube	14338 Pcs
SN74HC02PWR	Texas Instruments	Active	2 µA	15ns	-40°C ~ 85°C	Cut Tape (CT) & Digi-Reel®	22300 Pcs
MC74HC02ADTR2G	onsemi	Active	1 µA	13ns	-55°C ~ 125°C	Cut Tape (CT) & Digi-Reel®	50200 Pcs
MM74HC02MTC	Fairchild Semiconductor	Active	2 µA	15ns	-40°C ~ 85°C	Bulk	25450 Pcs
MM74HC02MTCX	onsemi	Active	2 µA	15ns	-40°C ~ 85°C	Tape & Reel (TR)	3250 Pcs
74HC02PW-Q100,118	Nexperia USA Inc.	Active	2 µA	15ns	-40°C ~ 125°C	Tape & Reel (TR)	2907 Pcs
74HC02PW,118	Nexperia USA Inc.	Active	2 µA	15ns	-40°C ~ 125°C	Tape & Reel (TR)	1900 Pcs
NLV74HC02ADTR2G	onsemi	Obsolete	1 µA	13ns	-55°C ~ 125°C	Tape & Reel (TR)	3332 Pcs

Engineering Selection Recommendations

For active production and new designs, SN74HC02PWR (Texas Instruments, active status) provides direct functional equivalence with identical electrical performance and the same operating temperature range as the original SN74HC02PW. This part is available in higher inventory quantities and maintains the same packaging format.

MC74HC02ADTR2G (onsemi, active status) offers improved performance characteristics with lower quiescent current (1 µA vs. 2 µA) and faster propagation delay (13ns vs. 15ns), along with an extended operating temperature range (-55°C ~ 125°C). This part is suitable for applications requiring enhanced thermal performance or lower power consumption.

74HC02PW,118 (Nexperia USA Inc., active status) and 74HC02PW-Q100,118 (Nexperia USA Inc., active status, AEC-Q100 qualified) provide extended operating temperature range (-40°C ~ 125°C) and are recommended for applications requiring automotive-grade qualification or broader temperature operation.

MM74HC02MTC (Fairchild Semiconductor, active status) and MM74HC02MTCX (onsemi, active status) are functionally equivalent alternatives with standard performance characteristics. All substitute parts maintain ROHS3 compliance and MSL 1 rating consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can SN74HC02PWR be used as a direct replacement for SN74HC02PW?

A: Yes. SN74HC02PWR is functionally equivalent with identical electrical specifications, logic configuration, and operating temperature range. The primary difference is packaging format (Cut Tape & Digi-Reel® vs. Tube) and active product status.

Q: What is the difference between MC74HC02ADTR2G and the original SN74HC02PW?

A: MC74HC02ADTR2G maintains functional equivalence but offers improved electrical performance: lower quiescent current (1 µA vs. 2 µA), faster propagation delay (13ns vs. 15ns), and extended operating temperature range (-55°C ~ 125°C vs. -40°C ~ 85°C). These differences do not prevent substitution but indicate superior performance characteristics.

Q: Are the Nexperia parts (74HC02PW,118 and 74HC02PW-Q100,118) suitable replacements?

A: Yes. Both Nexperia parts are functionally equivalent with identical electrical specifications and extended operating temperature range (-40°C ~ 125°C). The 74HC02PW-Q100,118 variant includes AEC-Q100 automotive qualification, making it suitable for automotive applications.

Q: Why is NLV74HC02ADTR2G listed as obsolete?

A: NLV74HC02ADTR2G is marked as obsolete but remains available in inventory. For new designs, active alternatives such as MC74HC02ADTR2G or 74HC02PW,118 are recommended to ensure long-term supply continuity.

Q: Does packaging format affect functional substitution?

A: No. Packaging format (Tube, Cut Tape, Tape & Reel, Bulk) does not affect electrical or functional equivalence. Selection should be based on procurement and assembly requirements. All listed parts use the same 14-TSSOP package case.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 rating, consistent with the original SN74HC02PW specifications.

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