SN74HC74AN Equivalent & Substitute Parts

Part Overview

The SN74HC74AN is a dual D-type flip-flop logic integrated circuit manufactured by Texas Instruments. This component functions as a Flip Flop Element Bit and is classified within the Logic category. The device is currently in Active product status with 1071 pieces available in new original stock inventory.

The SN74HC74AN is ROHS3 compliant and carries ECCN classification EAR99 with HTSUS code 8542.39.0001. Identifying equivalent and substitute parts is necessary when the primary device becomes unavailable, when supply chain optimization is required, or when design flexibility across manufacturing sources is needed while maintaining functional compatibility.

Substiute Parts

SN74HC74AN

Texas InstrumentsIn Stock: 1115SN74HC74AN Datasheet

Current PartRFQ

CD74HC74E

Harris CorporationIn Stock: 1470CD74HC74E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The CD74HC74E has been identified as a substitute part for the SN74HC74AN based on the following substitution criteria:

Functional Equivalence: Both devices operate as dual D-type flip-flop logic circuits with identical functional classification within the Logic category.

Base Product Number Alignment: Both parts share the base product number 74HC74, indicating they implement the same core logic function and pin configuration.

Electrical Classification: Both components are classified as Logic category integrated circuits with D-type flip-flop architecture.

Trade Compliance: Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, ensuring equivalent regulatory treatment.

The substitution relationship is based strictly on functional equivalence and regulatory classification. Differences in manufacturer, packaging format, and product status are noted in the comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: The SN74HC74AN is the recommended selection for new designs and applications. This device maintains Active product status, ensuring long-term availability and manufacturer support. The component is ROHS3 compliant, meeting current environmental and regulatory requirements for commercial and industrial applications.

Substitute Selection Criteria: The CD74HC74E may be considered as a substitute only in legacy system maintenance or repair scenarios where existing inventory must be matched. The following conditions apply:

The CD74HC74E carries Obsolete product status, indicating discontinued manufacturing and limited future availability. This part is RoHS non-compliant, which may restrict its use in applications subject to environmental regulations or customer specifications requiring RoHS compliance.

Both parts share identical ECCN and HTSUS classifications, ensuring equivalent export control and tariff treatment. Selection between these parts should be based on application requirements regarding product lifecycle status and regulatory compliance rather than functional differences.

Frequently Asked Questions (FAQ)

Q: What is the functional relationship between SN74HC74AN and CD74HC74E?

A: Both parts implement the same 74HC74 dual D-type flip-flop logic function. They share identical base product numbering and functional classification within the Logic category. The substitution is based on functional equivalence of the core logic circuit.

Q: Are there packaging differences between these parts?

A: Yes. The CD74HC74E is specified in Tube packaging with 14-PDIP (0.300", 7.62mm) package format. The SN74HC74AN packaging specification is not provided in the available data. Packaging compatibility must be verified against specific application requirements before substitution.

Q: What is the significance of the product status difference?

A: The SN74HC74AN maintains Active status, indicating current production and manufacturer support. The CD74HC74E is classified as Obsolete, meaning manufacturing has been discontinued. Active status parts are preferred for new designs; Obsolete parts are suitable only for legacy system support where existing inventory exists.

Q: Does RoHS compliance affect substitution decisions?

A: Yes. The SN74HC74AN is ROHS3 compliant, meeting current environmental standards. The CD74HC74E is RoHS non-compliant. Applications subject to RoHS requirements or customer specifications mandating RoHS compliance must use the SN74HC74AN or identify alternative compliant substitutes.

Q: Are the regulatory classifications identical?

A: Yes. Both parts carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications. This ensures equivalent treatment under export control regulations and tariff schedules.

Q: When should CD74HC74E be selected over SN74HC74AN?

A: The CD74HC74E should be selected only in repair or maintenance scenarios for legacy systems where component matching is required and RoHS non-compliance is acceptable. For new designs, applications requiring RoHS compliance, or systems with long-term support requirements, the SN74HC74AN is the appropriate selection.