74ACT273SJX Equivalent & Substitute Parts

Part Overview

The 74ACT273SJX is a D-Type flip-flop logic integrated circuit manufactured by onsemi, featuring 1 element with 8-bit configuration and positive edge triggering. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates with a master reset function and non-inverted output configuration, designed for surface mount applications in the 20-SOIC package format.

Substiute Parts

74ACT273SJX

onsemiIn Stock: 111174ACT273SJX Datasheet

Current PartRFQ

CD74ACT273M96

Texas InstrumentsIn Stock: 1481CD74ACT273M96 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACT273SJX is determined by strict adherence to the following electrical and mechanical parameters:

Core Substitution Criteria:

• Series compatibility: 74ACT logic family
• Functional equivalence: D-Type flip-flop with 1 element, 8-bit configuration
• Trigger mechanism: Positive edge triggering
• Output configuration: Non-inverted output
• Function: Master reset capability
• Supply voltage range: 4.5V ~ 5.5V
• Package type: 20-SOIC surface mount
• Mounting compatibility: Surface mount technology

The CD74ACT273M96 from Texas Instruments meets all core substitution criteria. Both parts share identical logic family designation, functional architecture, and electrical operating parameters. The substitute part maintains compatibility with the 20-SOIC package format and surface mount assembly requirements.

Parameter Comparison

Engineering Selection Recommendations

The CD74ACT273M96 serves as a functional equivalent for the obsolete 74ACT273SJX. The substitute part is currently in active production status, ensuring long-term availability and supply chain stability. Both components comply with REACH regulations and carry EAR99 export classification.

The Texas Instruments CD74ACT273M96 provides ROHS3 compliance, offering environmental and regulatory advantages over the original onsemi part. The substitute maintains identical supply voltage specifications and output drive capabilities, supporting direct functional replacement in existing circuit designs.

Physical package dimensions differ between the two parts: the original measures 0.209" width while the substitute measures 0.295" width in the 20-SOIC format. This dimensional variance requires verification of PCB layout compatibility prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT273M96 directly replace the 74ACT273SJX in existing designs?

A: Functional replacement is supported based on identical logic family, flip-flop configuration, and electrical operating parameters. Physical package dimensions differ, requiring PCB layout verification before implementation.

Q: What are the key differences between these parts?

A: The substitute part operates at lower clock frequency (80 MHz versus 189 MHz) and exhibits longer propagation delay (14.6 ns versus 8.5 ns). The CD74ACT273M96 features lower quiescent current (8 µA versus 40 µA) and extended operating temperature range (-55°C to 125°C versus -40°C to 85°C). The substitute is in active production status with ROHS3 compliance.

Q: Are there package compatibility concerns?

A: Both parts use 20-SOIC surface mount packages. Physical dimensions differ: 0.209" width for the original versus 0.295" width for the substitute. PCB footprint and assembly equipment compatibility must be evaluated for your specific application.

Q: What is the supply voltage compatibility?

A: Both parts operate within identical supply voltage range of 4.5V to 5.5V, ensuring direct electrical compatibility in this parameter.

Q: Does the substitute part meet regulatory requirements?

A: The CD74ACT273M96 is ROHS3 compliant and REACH unaffected. Both parts carry EAR99 export classification and unlimited moisture sensitivity level rating.