74HCT280N,652 Equivalent & Substitute Parts

Part Overview

The 74HCT280N,652 is a 9-bit parity generator/checker logic integrated circuit manufactured by NXP USA Inc. in a 14-DIP through-hole package. This component is classified as obsolete, indicating discontinued production and limited availability through standard distribution channels. The identification of equivalent substitute parts is necessary to maintain design continuity and ensure component procurement for legacy system maintenance and new production builds requiring this functional specification.

Substiute Parts

74HCT280N,652

NXP USA Inc.In Stock: 104774HCT280N,652 Datasheet

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CD74HCT280E

Harris CorporationIn Stock: 6949CD74HCT280E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HCT280N,652 are identified based on the following critical parameters that determine functional and physical compatibility:

• Logic Function: Parity Generator/Checker with 9-bit configuration
• Supply Voltage Range: 4.5 V ~ 5.5 V
• Package Type: 14-DIP (0.300", 7.62mm) through-hole mounting
• Series Compatibility: 74HCT logic family
• Pin Configuration: Identical 14-pin DIP footprint

The CD74HCT280E manufactured by Harris Corporation meets all these substitution criteria, providing equivalent functional performance and physical compatibility for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 74HCT280N,652 and CD74HCT280E are classified as obsolete products. The CD74HCT280E from Harris Corporation provides functional equivalence as a direct substitute, sharing identical logic specifications, supply voltage requirements, and physical package dimensions.

The NXP part carries ROHS3 compliance certification, while the Harris substitute is RoHS non-compliant. Design teams must evaluate regulatory and compliance requirements for their specific application context when selecting between these alternatives.

Both components share the same ECCN (EAR99) and HTSUS classification codes, indicating equivalent export control and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Can the CD74HCT280E directly replace the 74HCT280N,652 in existing designs?

A: Yes. Both components share identical logic function (9-bit parity generator/checker), supply voltage range (4.5 V ~ 5.5 V), and 14-DIP package footprint. Direct pin-for-pin substitution is supported.

Q: What is the difference in RoHS compliance between these parts?

A: The 74HCT280N,652 is ROHS3 compliant, while the CD74HCT280E is RoHS non-compliant. Applications subject to RoHS regulations must use the NXP part or identify alternative compliant solutions.

Q: Are there differences in output current specifications?

A: The CD74HCT280E specifies output current ratings of 4mA (high) and 4mA (low). The 74HCT280N,652 does not provide this specification in available documentation. Both operate within the 74HCT logic family standard parameters.

Q: What operating temperature ranges are supported?

A: The CD74HCT280E operates across -55°C to 125°C. The 74HCT280N,652 operating temperature range is not specified in available data. Designs requiring extended temperature operation should reference complete datasheets for both components.

Q: Are both parts available for procurement?

A: Both components are classified as obsolete. The CD74HCT280E shows higher inventory availability (6900 pcs) compared to the 74HCT280N,652 (938 pcs) through current distribution channels.