74F280SJ Parity Generator/Checker - Equivalent & Substitute Parts

Part Overview

The 74F280SJ is a 9-bit parity generator/checker logic integrated circuit manufactured by onsemi in a 14-SOP surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74F280 series provides parallel parity generation and checking functionality for digital systems requiring error detection in 9-bit data paths. Substitute parts maintain functional equivalence while offering improved availability and product status through active manufacturers.

Substiute Parts

74F280SJ

onsemiIn Stock: 238874F280SJ Datasheet

Current PartRFQ

SN74F280BD

Texas InstrumentsIn Stock: 2131SN74F280BD Datasheet

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SN74F280BDR

Texas InstrumentsIn Stock: 3683SN74F280BDR Datasheet

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SN74F280BNSR

Texas InstrumentsIn Stock: 2976SN74F280BNSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74F280SJ is determined by strict equivalence across the following parameters: logic type (parity generator/checker), circuit count (9-bit), output current specifications (1mA high, 20mA low), supply voltage range (4.5 V ~ 5.5 V), operating temperature range (0°C ~ 70°C), and base product number (74F280). All identified substitute parts meet these core electrical requirements. Package variations exist between the main part and substitutes, with differences in case width (5.30mm versus 3.90mm) and supplier device package designations (14-SOP versus 14-SOIC). These package differences are mechanical only and do not affect electrical functionality or pin configuration compatibility.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the 74F280SJ, the SN74F280BDR represents the primary substitute option. This part is manufactured by Texas Instruments, carries Active product status, maintains ROHS3 compliance, and is available in Tape & Reel packaging with 3600 units in stock. The SN74F280BDR provides long-term availability and supply chain stability compared to the obsolete onsemi part.

The SN74F280BNSR offers an alternative with identical package dimensions (5.30mm width) to the original 74F280SJ, facilitating direct mechanical compatibility in existing PCB layouts. This part also carries Active status and ROHS3 compliance.

The SN74F280BD is available in Tube packaging with Last Time Buy status, indicating limited future availability. This option is suitable only for immediate requirements without long-term supply assurance.

Package width differences between the 3.90mm variants (SN74F280BD, SN74F280BDR) and the 5.30mm variants (74F280SJ, SN74F280BNSR) require PCB footprint verification prior to substitution. Pin configuration and electrical function remain identical across all variants.

Frequently Asked Questions (FAQ)

Q: Are all substitute parts electrically identical to the 74F280SJ? A: Yes. All substitute parts maintain identical logic type (parity generator/checker), circuit count (9-bit), output current specifications (1mA, 20mA), supply voltage range (4.5 V ~ 5.5 V), and operating temperature range (0°C ~ 70°C). Electrical functionality and pin configuration are equivalent.

Q: What is the difference between the package variants? A: The primary difference is case width. The 74F280SJ and SN74F280BNSR use 14-SOIC packages with 5.30mm width, while the SN74F280BD and SN74F280BDR use 14-SOIC packages with 3.90mm width. This affects PCB footprint dimensions but not electrical performance or pin assignments.

Q: Which substitute should I select for new designs? A: The SN74F280BDR is recommended for new designs. It carries Active product status, ROHS3 compliance, and is available in standard Tape & Reel packaging with strong inventory levels.

Q: Can I use the SN74F280BNSR as a direct replacement in existing boards? A: Yes, if your PCB footprint accommodates the 5.30mm package width. The SN74F280BNSR matches the original 74F280SJ package dimensions and carries Active status with ROHS3 compliance.

Q: What is the difference between Tube and Tape & Reel packaging? A: Tube packaging is suitable for manual assembly or small-quantity applications. Tape & Reel packaging is standard for automated assembly processes and high-volume production. Both provide identical component functionality.

Q: Are there any compliance or regulatory differences between these parts? A: All substitute parts maintain REACH Unaffected status and ROHS3 compliance. Moisture Sensitivity Level (MSL) is 1 (Unlimited) across all variants, indicating no special moisture handling requirements.