74ACT373PC Equivalent & Substitute Parts

Part Overview

The 74ACT373PC is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 circuit configuration with tri-state output capability. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The 74ACT373 series provides transparent latch functionality suitable for data storage and bus interface applications in digital logic systems.

Substiute Parts

74ACT373PC

onsemiIn Stock: 134374ACT373PC Datasheet

Current PartRFQ

SN74ACT373N

Texas InstrumentsIn Stock: 2120SN74ACT373N Datasheet

DirectRFQ

CD74ACT373E

Harris CorporationIn Stock: 1477CD74ACT373E Datasheet

SimilarRFQ

SN74ACT563N

Texas InstrumentsIn Stock: 1463SN74ACT563N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ACT373PC are classified based on functional and electrical compatibility within the 74ACT logic family. The primary substitution criteria are:

• Logic Type & Circuit Configuration: All substitutes maintain D-Type Transparent Latch topology with 8:8 circuit configuration
• Electrical Parameters: Supply voltage (4.5V ~ 5.5V), output current (24mA / 24mA), and tri-state output capability must remain constant
• Package Compatibility: All substitutes use 20-DIP (0.300", 7.62mm) through-hole packaging
• Propagation Delay: Acceptable variance within logic family specifications
• Operating Temperature Range: Minimum -40°C ~ 85°C requirement

The 74ACT373PC has three identified substitutes: SN74ACT373N (direct equivalent), CD74ACT373E (similar equivalent), and SN74ACT563N (parametric equivalent).

Parameter Comparison

Engineering Selection Recommendations

SN74ACT373N (Texas Instruments) is the primary direct equivalent substitute. This part maintains identical electrical specifications and operating parameters while offering active product status and ROHS3 compliance. Propagation delay of 8.5ns is within acceptable variance of the original 8ns specification.

SN74ACT563N (Texas Instruments) serves as a parametric equivalent with faster propagation delay (6.5ns) and active product status. This part is suitable for applications where improved timing performance is beneficial. ROHS3 compliance is maintained.

CD74ACT373E (Harris Corporation) is classified as a similar equivalent but carries obsolete product status. This part features superior propagation delay (3ns) and extended operating temperature range (-55°C ~ 125°C) but does not meet RoHS compliance requirements. Selection of this part should be limited to legacy system maintenance where RoHS compliance is not mandated.

For new designs and procurement, SN74ACT373N is the recommended primary choice due to active status and regulatory compliance. SN74ACT563N provides an alternative for timing-critical applications.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT373N directly replace 74ACT373PC without circuit modification?

A: Yes. SN74ACT373N maintains identical electrical specifications, package type, and pin configuration. No circuit modification is required for direct substitution.

Q: What is the difference between SN74ACT373N and SN74ACT563N?

A: Both are Texas Instruments products with active status and ROHS3 compliance. The primary difference is propagation delay: SN74ACT373N operates at 8.5ns while SN74ACT563N operates at 6.5ns. Both maintain identical supply voltage, output current, and package specifications. Selection depends on timing requirements of the application.

Q: Why is CD74ACT373E listed as a substitute if it is obsolete?

A: CD74ACT373E is included for reference in legacy system maintenance scenarios. However, its obsolete status and RoHS non-compliance make it unsuitable for new designs or systems requiring regulatory compliance.

Q: Are all substitutes available in the same packaging?

A: Yes. All listed substitutes use 20-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical and electrical compatibility with existing PCB designs.

Q: What compliance certifications should I verify for new procurement?

A: For new designs, verify ROHS3 compliance and active product status. SN74ACT373N and SN74ACT563N both meet these requirements. Confirm REACH compliance status with your supplier for applications subject to regulatory requirements.