N74F02D,602 NOR Gate IC Equivalent & Substitute Parts

Part Overview

The N74F02D,602 is a 4-channel 2-input NOR Gate logic IC manufactured by NXP Semiconductors in a 14-SO surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The part operates within a 4.5V to 5.5V supply voltage range and is suitable for standard TTL logic applications requiring NOR gate functionality.

Key Parameters

Parameter	Value
Logic Type	NOR Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	4.5V ~ 5.5V
Current - Output High, Low	1mA, 20mA
Input Logic Level - Low	0.8V
Input Logic Level - High	2V
Max Propagation Delay @ V, Max CL	5.5ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the N74F02D,602 is determined by strict equivalence across the following parameters:

Logic function: 4-channel 2-input NOR gate
Electrical specifications: 4.5V ~ 5.5V supply, 1mA/20mA output current, 0.8V/2V input logic levels, 5.5ns propagation delay
Operating temperature range: 0°C ~ 70°C
Mounting type: Surface mount
Compliance: ROHS3, REACH Unaffected, EAR99

All substitute parts listed maintain identical electrical and functional characteristics. Packaging variations (14-SO vs. 14-SOIC) and supplier device packages are noted but do not affect functional compatibility when PCB layout accommodates the physical dimensions.

Parameter Comparison

Parameter	N74F02D,602 (NXP)	SN74F02DR (TI)	SN74F02NSR (TI)	SN74F02D (TI)
Manufacturer	NXP Semiconductors	Texas Instruments	Texas Instruments	Texas Instruments
Product Status	Obsolete	Active	Active	Last Time Buy
Logic Type	NOR Gate	NOR Gate	NOR Gate	NOR Gate
Number of Circuits	4	4	4	4
Number of Inputs	2	2	2	2
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Current - Output High, Low	1mA, 20mA	1mA, 20mA	1mA, 20mA	1mA, 20mA
Input Logic Level - Low	0.8V	0.8V	0.8V	0.8V
Input Logic Level - High	2V	2V	2V	2V
Max Propagation Delay @ V, Max CL	5.5ns @ 5V, 50pF	5.5ns @ 5V, 50pF	5.5ns @ 5V, 50pF	5.5ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.209", 5.30mm Width)	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SN74F02DR (Texas Instruments) is the primary direct substitute. This part is in active production status with 15,091 units in stock, ensuring long-term availability. It maintains identical electrical parameters and operates in the same 14-SOIC package footprint (0.154", 3.90mm width) as the original N74F02D,602. Packaging is supplied in Tape & Reel format suitable for automated assembly.

SN74F02NSR (Texas Instruments) is the manufacturer-recommended alternative. This part is also in active production with 3,400 units available. It differs only in package width (0.209", 5.30mm) compared to the original specification. PCB layout verification is required to confirm compatibility with the wider package footprint.

SN74F02D (Texas Instruments) is a parametric equivalent classified as Last Time Buy. With 1,804 units in stock, this part maintains full electrical equivalence but has limited future availability. Packaging is supplied in Tube format. This option is suitable only for applications where long-term supply is not critical.

All three substitutes are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74F02DR be used as a direct replacement for N74F02D,602?

A: Yes. The SN74F02DR is electrically and functionally identical to the N74F02D,602. Both parts share the same 14-SOIC package footprint (0.154", 3.90mm width), logic configuration, electrical specifications, and operating temperature range. No circuit modifications are required.

Q: What is the difference between SN74F02DR and SN74F02NSR?

A: Both parts are electrically identical 4-channel 2-input NOR gates with matching electrical specifications. The primary difference is package width: SN74F02DR uses a 0.154" (3.90mm) width package, while SN74F02NSR uses a 0.209" (5.30mm) width package. Verify PCB layout compatibility before selecting SN74F02NSR.

Q: Why is the N74F02D,602 marked as obsolete?

A: The N74F02D,602 is an older NXP product that has been discontinued. Texas Instruments continues to manufacture equivalent 74F02 logic gates, making substitution straightforward for ongoing production and design updates.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (SN74F02DR, SN74F02NSR, and SN74F02D) are ROHS3 compliant with Moisture Sensitivity Level 1 (unlimited shelf life). They meet current environmental and regulatory requirements.

Q: What packaging formats are available for the substitute parts?

A: SN74F02DR is supplied in Tape & Reel format for automated assembly. SN74F02NSR is also supplied in Tape & Reel format. SN74F02D is supplied in Tube format. Select based on your assembly process requirements.

Q: Can I use SN74F02D if SN74F02DR is unavailable?

A: SN74F02D is electrically equivalent and can be used as a substitute. However, it is classified as Last Time Buy with limited inventory (1,804 units). Use this option only if SN74F02DR is unavailable and long-term supply is not required.

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