SN74F02NS Equivalent & Substitute Parts

Part Overview

The SN74F02NS is a NOR Gate IC manufactured by Texas Instruments, featuring 4 channels with 2 inputs per channel in a 14-SO surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The SN74F02NS remains functional and compliant with current standards, but sourcing alternatives becomes necessary due to inventory depletion and product lifecycle status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications requiring NOR gate logic functionality.

Substiute Parts

SN74F02NS

Texas InstrumentsIn Stock: 2127SN74F02NS Datasheet

Current PartRFQ

SN74F02NSR

Texas InstrumentsIn Stock: 3440SN74F02NSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74F02NS is determined by strict equivalence across the following critical parameters:

Logic Function: NOR Gate with identical 4-channel, 2-input configuration ensures functional compatibility at the circuit level.

Electrical Specifications: Supply voltage range (4.5V ~ 5.5V), input logic thresholds (Low: 0.8V, High: 2V), and propagation delay (5.5ns @ 5V, 50pF) must match exactly to guarantee signal integrity and timing performance.

Package Compatibility: 14-SOIC surface mount package with 0.209" width and 5.30mm dimensions ensures mechanical and PCB layout compatibility without redesign.

Environmental & Compliance Standards: RoHS3 compliance and MSL Level 1 rating must be maintained for manufacturing and storage requirements.

The SN74F02NSR qualifies as a direct substitute based on identical electrical performance, package specifications, and compliance certifications. The primary distinction is product status and packaging format (Tape & Reel versus bulk).

Parameter Comparison

Engineering Selection Recommendations

The SN74F02NSR is the direct substitute for the SN74F02NS based on identical electrical and mechanical specifications. Selection between these parts should be driven by supply chain and manufacturing process requirements:

SN74F02NS (Last Time Buy status): Suitable for immediate fulfillment of existing inventory requirements. Limited availability necessitates expedited procurement planning.

SN74F02NSR (Active status): Recommended for new designs and long-term production requirements. Tape & Reel packaging format supports automated assembly processes and provides superior supply chain continuity. Active product status ensures ongoing availability and manufacturing support from Texas Instruments.

Both parts maintain identical functional performance, electrical characteristics, and compliance certifications. Selection should prioritize the SN74F02NSR for designs requiring sustained production volumes and supply reliability.

Frequently Asked Questions (FAQ)

Q: Can the SN74F02NSR replace the SN74F02NS in existing designs?

A: Yes. The SN74F02NSR is electrically and mechanically identical to the SN74F02NS. All electrical parameters, logic function, propagation delay, and package dimensions are equivalent. Direct substitution requires no circuit redesign or PCB layout modification.

Q: What is the difference between SN74F02NS and SN74F02NSR?

A: The primary differences are product status and packaging format. The SN74F02NS is Last Time Buy (discontinued), supplied in bulk packaging. The SN74F02NSR is Active (current production), supplied in Tape & Reel format for automated assembly. Electrical and functional specifications are identical.

Q: Is the 14-SOIC package compatible between both parts?

A: Yes. Both parts use the identical 14-SOIC package with 0.209" width and 5.30mm dimensions. PCB footprints, solder pad layouts, and mounting procedures are identical. No PCB redesign is required.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the SN74F02NS and SN74F02NSR are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating. Both parts meet current environmental and manufacturing standards.

Q: Which part should be selected for new production designs?

A: The SN74F02NSR should be selected for new designs. Active product status ensures long-term availability, ongoing manufacturing support, and supply chain reliability. Tape & Reel packaging supports high-volume automated assembly processes.

Q: What is the propagation delay specification for both parts?

A: Both parts specify 5.5ns maximum propagation delay at 5V supply voltage with 50pF load capacitance. Timing performance is identical between the two parts.