CD74AC280M Equivalent & Substitute Parts

Part Overview

The CD74AC280M is a 9-bit parity generator/checker logic integrated circuit manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The CD74AC280M operates across a supply voltage range of 1.5 V to 5.5 V and maintains functionality across industrial temperature ranges from -55°C to 125°C. Identifying equivalent substitute parts is necessary due to the Last Time Buy status, which restricts future procurement from standard inventory channels.

Substiute Parts

CD74AC280M

Texas InstrumentsIn Stock: 1578CD74AC280M Datasheet

Current PartRFQ

CD74AC280M96

Texas InstrumentsIn Stock: 2560CD74AC280M96 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74AC280M is determined by strict equivalence across the following critical parameters:

• Logic Type: Parity Generator/Checker (9-Bit configuration)
• Output Current Specifications: 24mA high, 24mA low
• Supply Voltage Range: 1.5 V ~ 5.5 V
• Operating Temperature Range: -55°C ~ 125°C
• Package Type: 14-SOIC surface mount
• Base Product Number: 74AC280

The CD74AC280M96 qualifies as a direct substitute based on identical electrical specifications and package geometry. The primary distinction between these parts is packaging format: the main part uses Tube packaging, while the substitute uses Tape & Reel (TR) format. Both parts share the same 14-SOIC physical footprint and electrical performance characteristics, making them functionally interchangeable at the circuit level.

Parameter Comparison

Engineering Selection Recommendations

The CD74AC280M96 is the direct substitute for the CD74AC280M. Both parts maintain identical electrical performance and physical compatibility. The CD74AC280M96 carries Active product status, ensuring continued availability and supply chain reliability compared to the Last Time Buy designation of the main part. Both parts satisfy ROHS3 compliance and REACH unaffected requirements, supporting regulatory and environmental standards.

The selection between these parts should be based on packaging requirements and procurement strategy. The Tube packaging of the CD74AC280M is suitable for lower-volume applications or manual assembly processes, while the Tape & Reel format of the CD74AC280M96 is optimized for automated pick-and-place assembly and higher-volume production runs. No electrical or thermal performance differences exist between these parts.

Frequently Asked Questions (FAQ)

Q: Can the CD74AC280M96 be used as a direct replacement for the CD74AC280M in existing designs?

A: Yes. The CD74AC280M96 is electrically and mechanically equivalent. Both parts feature identical 14-SOIC package geometry, supply voltage specifications (1.5 V ~ 5.5 V), output current ratings (24mA), and operating temperature range (-55°C ~ 125°C). Circuit-level substitution requires no design modifications.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging contains individual components in a plastic tube, suitable for manual handling and lower-volume assembly. Tape & Reel packaging places components on a continuous carrier tape wound on a reel, designed for automated assembly equipment. Both formats contain the same component with identical electrical specifications.

Q: Why is the CD74AC280M marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. Existing inventory may be available through authorized distributors, but future procurement cannot be guaranteed. The CD74AC280M96 provides continued access to the same functionality with Active product status.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the CD74AC280M and CD74AC280M96 are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). Regulatory and environmental certifications are equivalent.

Q: What is the 9-bit configuration in this parity generator/checker?

A: The 9-bit specification indicates the component processes nine data bits for parity generation or checking operations. This configuration is consistent across both the main part and substitute, ensuring functional equivalence in parity detection applications.