N74F02D,623 NOR Gate IC Equivalent & Substitute Parts

Part Overview

The N74F02D,623 is a 4-channel 2-input NOR gate logic IC manufactured by Nexperia USA Inc. in a 14-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. 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.

Substiute Parts

N74F02D,623

Nexperia USA Inc.In Stock: 825N74F02D,623 Datasheet

Current PartRFQ

SN74F02D

Texas InstrumentsIn Stock: 1885SN74F02D Datasheet

DirectRFQ

SN74F02DR

Texas InstrumentsIn Stock: 15201SN74F02DR Datasheet

DirectRFQ

SN74F02NSR

Texas InstrumentsIn Stock: 3440SN74F02NSR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the N74F02D,623 is determined by strict equivalence across the following parameters:

• Logic Type: NOR Gate (4 channels, 2 inputs per channel)
• Voltage Supply Range: 4.5V ~ 5.5V
• Current Output Specifications: 1mA (high), 20mA (low)
• Input Logic Levels: 0.8V (low), 2V (high)
• Propagation Delay: 5.5ns @ 5V, 50pF
• Operating Temperature Range: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package Type: 14-SOIC or 14-SO variants
• Compliance: ROHS3, REACH Unaffected, MSL 1

All substitute parts listed maintain identical electrical characteristics and functional specifications. Package variations (14-SOIC vs. 14-SO) are noted where applicable, as these represent different physical dimensions within the same logical footprint family.

Parameter Comparison

Engineering Selection Recommendations

SN74F02DR (Texas Instruments) is the primary substitute for the N74F02D,623. This part maintains active product status, ensuring long-term availability and supply chain stability. It is supplied in Tape & Reel packaging and carries full ROHS3 compliance with unlimited moisture sensitivity rating.

SN74F02D (Texas Instruments) serves as a secondary substitute with Last Time Buy status. This part is available in Tube packaging and maintains identical electrical specifications. Selection of this part should account for its limited production window.

SN74F02NSR (Texas Instruments) is functionally equivalent but features a wider 14-SOIC package (0.209" vs. 0.154" width). This part is suitable only for designs where the larger package footprint is accommodated in the PCB layout. It maintains active product status and full compliance certifications.

All three substitutes are ROHS3 compliant, REACH unaffected, and carry MSL 1 ratings, matching the original part's environmental and regulatory compliance profile.

Frequently Asked Questions (FAQ)

Q: Can SN74F02NSR be used as a direct replacement for N74F02D,623 on existing PCBs?

A: SN74F02NSR has a different package width (0.209" vs. 0.154"), making it incompatible with PCB layouts designed for the narrower 14-SOIC footprint. PCB redesign is required for this substitution.

Q: What is the difference between SN74F02D and SN74F02DR?

A: Both parts are electrically identical. The primary difference is packaging: SN74F02D is supplied in Tube, while SN74F02DR is supplied in Tape & Reel. SN74F02DR has active product status, while SN74F02D is Last Time Buy.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitutes—SN74F02D, SN74F02DR, and SN74F02NSR—are ROHS3 compliant with MSL 1 (Unlimited) ratings, matching the original N74F02D,623 specifications.

Q: Which substitute should be selected for new designs?

A: SN74F02DR is recommended for new designs due to its active product status, ensuring availability throughout the design lifecycle and production phases.

Q: Do all substitutes operate within the same voltage and temperature ranges?

A: Yes. All substitutes operate within 4.5V to 5.5V supply voltage and 0°C to 70°C operating temperature ranges, with identical propagation delay specifications of 5.5ns @ 5V, 50pF.