N74F32D,623 OR Gate IC Equivalent & Substitute Parts

Part Overview

The N74F32D,623 is a 4-channel 2-input OR gate logic IC manufactured by NXP USA Inc. in 14-SOIC surface mount packaging. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The 74F series OR gate remains functionally relevant in legacy system maintenance and component replacement scenarios where pin-compatible alternatives are required.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
Voltage Supply Range	4.5V ~ 5.5V
Output Current (High/Low)	1mA / 20mA
Input Logic Level Low	0.8V
Input Logic Level High	2V
Max Propagation Delay	5.6ns @ 5V, 50pF
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount
Package Type	14-SOIC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the N74F32D,623 is determined by strict equivalence across the following parameters:

Logic function: 4-channel 2-input OR gate configuration
Electrical specifications: 4.5V ~ 5.5V supply voltage, 1mA/20mA output current, 0.8V/2V input logic levels, 5.6ns propagation delay
Mounting and packaging: Surface mount technology, 14-SOIC package footprint
Environmental compliance: ROHS3 compliance, MSL Level 1, REACH unaffected status
Base product series: 74F logic family

All substitute parts listed maintain identical functional and electrical characteristics. Packaging format variations (tube vs. tape & reel) and product status differences do not affect electrical interchangeability.

Parameter Comparison

Parameter	N74F32D,623 (NXP)	SN74F32D (TI)	SN74F32DR (TI)	SN74F32NSR (TI)
Manufacturer	NXP USA Inc.	Texas Instruments	Texas Instruments	Texas Instruments
Logic Type	OR Gate	OR Gate	OR Gate	OR Gate
Circuits / Inputs	4 / 2	4 / 2	4 / 2	4 / 2
Voltage Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Output Current (H/L)	1mA / 20mA	1mA / 20mA	1mA / 20mA	1mA / 20mA
Input Logic Levels (L/H)	0.8V / 2V	0.8V / 2V	0.8V / 2V	0.8V / 2V
Propagation Delay	5.6ns @ 5V, 50pF	5.6ns @ 5V	5.6ns @ 5V	5.6ns @ 5V
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)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.209", 5.30mm)
Product Status	Obsolete	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SN74F32DR (Texas Instruments) is the primary substitute for new designs and procurement. This part maintains active product status, ensuring long-term availability and supply chain stability. It is supplied in tape & reel format suitable for automated assembly processes and carries full ROHS3 compliance with unlimited moisture sensitivity rating.

SN74F32NSR (Texas Instruments) serves as a manufacturer-recommended alternative with active status. This variant uses a wider 14-SOIC package (0.209" width vs. 0.154"), which may require PCB layout verification for footprint compatibility before implementation.

SN74F32D (Texas Instruments) is available as a last-time-buy option in tube packaging. This part is electrically equivalent but carries end-of-life status, making it suitable only for immediate replacement needs where supply is confirmed.

All three Texas Instruments substitutes maintain identical electrical performance, compliance certifications, and functional equivalence to the obsolete NXP N74F32D,623.

Frequently Asked Questions (FAQ)

Q: Can SN74F32NSR be used as a direct replacement for N74F32D,623?

A: SN74F32NSR is electrically equivalent and functionally interchangeable. However, the package width differs (0.209" vs. 0.154"), requiring PCB footprint verification. Pin configuration and electrical characteristics are identical.

Q: What is the difference between SN74F32D and SN74F32DR?

A: Both parts are electrically identical 4-channel 2-input OR gates with matching electrical specifications. The primary difference is packaging format: SN74F32D is supplied in tubes, while SN74F32DR is supplied in tape & reel. SN74F32DR has active product status; SN74F32D is last-time-buy.

Q: Are all substitutes ROHS3 compliant?

A: Yes. The N74F32D,623 and all listed substitutes (SN74F32D, SN74F32DR, SN74F32NSR) are ROHS3 compliant with MSL Level 1 rating and REACH unaffected status.

Q: Which substitute should be selected for new production?

A: SN74F32DR is recommended for new designs due to active product status, ensuring sustained availability and supply continuity. It is supplied in tape & reel format optimized for automated manufacturing.

Q: Do propagation delay specifications differ between substitutes?

A: All substitutes maintain 5.6ns maximum propagation delay at 5V. The original N74F32D,623 specifies this delay at 50pF load; Texas Instruments substitutes do not specify load capacitance in the provided data.

Q: Can these parts be used interchangeably in legacy systems?

A: Yes. All substitutes maintain identical pin configuration, logic function, voltage supply range (4.5V ~ 5.5V), input/output levels, and operating temperature range (0°C ~ 70°C), enabling direct functional replacement in existing circuits.

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