SN74HC02N-NG Equivalent & Substitute Parts

Part Overview

The SN74HC02N-NG is a NOR Gate IC manufactured by Texas Instruments, featuring 4 channels with 2 inputs per channel in a 14-PDIP package. This logic component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter ranges, enabling component procurement flexibility while preserving circuit functionality.

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 @ V, Max CL	15ns @ 6V, 50pF
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SN74HC02N-NG is determined by strict equivalence across the following critical parameters:

Logic Configuration: Identical NOR gate topology with 4 channels and 2 inputs per channel ensures functional compatibility at the circuit level.

Electrical Specifications: Supply voltage range (2V ~ 6V), quiescent current (2 µA maximum), output current ratings (5.2mA), input logic thresholds, and propagation delay (15ns @ 6V, 50pF) must remain unchanged.

Mechanical Compatibility: Through-hole mounting type and 14-DIP package footprint (0.300", 7.62mm) ensure physical interchangeability on printed circuit boards.

Compliance & Status: Active product status and RoHS3 compliance are required for substitute parts to maintain regulatory and supply chain consistency.

The SN74HC02N (without the -NG suffix) qualifies as a parametric equivalent based on identical electrical and mechanical specifications.

Parameter Comparison

Parameter	SN74HC02N-NG (Main Part)	SN74HC02N (Substitute)
Manufacturer	Texas Instruments	Texas Instruments
Series	74HC	74HC
Logic Type	NOR Gate	NOR Gate
Number of Circuits	4	4
Number of Inputs	2	2
Voltage - Supply	2V ~ 6V	2V ~ 6V
Current - Quiescent (Max)	2 µA	2 µA
Current - Output High, Low	5.2mA, 5.2mA	5.2mA, 5.2mA
Input Logic Level - Low	0.5V ~ 1.8V	0.5V ~ 1.8V
Input Logic Level - High	1.5V ~ 4.2V	1.5V ~ 4.2V
Max Propagation Delay @ V, Max CL	15ns @ 6V, 50pF	15ns @ 6V, 50pF
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Through Hole	Through Hole
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both the SN74HC02N-NG and SN74HC02N are Active status components manufactured by Texas Instruments with identical electrical and mechanical specifications. The primary distinction is packaging format: SN74HC02N-NG is supplied in standard packaging, while SN74HC02N is supplied in tube packaging. Both maintain ROHS3 compliance and are suitable for equivalent circuit applications.

Selection between these parts should be based on procurement requirements, inventory availability, and packaging preferences for assembly operations. No electrical performance difference exists between the two part numbers.

Frequently Asked Questions (FAQ)

Q: Can SN74HC02N replace SN74HC02N-NG in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format only. Substitution is valid for all circuit applications where SN74HC02N-NG is specified.

Q: What determines if a part is a valid substitute for the SN74HC02N-NG?

A: Valid substitutes must maintain identical logic configuration (4-channel NOR gate, 2 inputs), electrical specifications (2V ~ 6V supply, 2 µA quiescent current, 5.2mA output current, 15ns propagation delay), mechanical compatibility (14-DIP through-hole package), and compliance status (Active, RoHS3).

Q: Are there differences in the 14-DIP package footprint between substitute parts?

A: No. Both parts use the 14-DIP (0.300", 7.62mm) package with identical through-hole mounting specifications, ensuring direct PCB compatibility.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (standard vs. tube) does not affect electrical characteristics, operating temperature range, or logic performance.

Q: What is the significance of the -NG suffix?

A: The -NG suffix indicates a specific packaging or distribution format. The base part number SN74HC02N represents the core component with identical electrical specifications.

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