CD74ACT573M Equivalent & Substitute Parts

Part Overview

The CD74ACT573M is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring an 8:8 circuit configuration with tri-state output capability in a 20-SOIC surface mount package. This component is classified as Last Time Buy, indicating limited availability from the original manufacturer. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this logic function.

Substiute Parts

CD74ACT573M

Texas InstrumentsIn Stock: 2234CD74ACT573M Datasheet

Current PartRFQ

CD74ACT573M96

Harris CorporationIn Stock: 1927CD74ACT573M96 Datasheet

MFR RecommendedRFQ

MC74ACT573DWR2G

onsemiIn Stock: 2225MC74ACT573DWR2G Datasheet

DirectRFQ

MC74ACT573DWG

onsemiIn Stock: 1184MC74ACT573DWG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD74ACT573M is determined by the following critical parameters:

Primary Compatibility Criteria:

• Logic Type: D-Type Transparent Latch
• Output Type: Tri-State
• Voltage Supply Range: 4.5V ~ 5.5V
• Package / Case: 20-SOIC
• Mounting Type: Surface Mount
• Base Product Number: 74ACT573

Secondary Considerations:

• Circuit Configuration (8:8 or 1:8)
• Propagation Delay Time
• Operating Temperature Range
• RoHS and environmental compliance status

The identified substitute parts maintain compatibility across primary criteria. Variations in circuit configuration (8:8 versus 1:8) and propagation delay time represent functional differences that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

CD74ACT573M96 (Harris Corporation): This part maintains identical electrical specifications and circuit configuration (8:8) to the main part. However, it carries Obsolete product status and is RoHS non-compliant, making it unsuitable for new designs or applications with environmental compliance requirements.

MC74ACT573DWR2G (onsemi, Tape & Reel): This part is Active and ROHS3 compliant. It operates within the same voltage supply range and maintains tri-state output capability. The circuit configuration differs at 1:8 versus 8:8, and propagation delay increases to 10.5ns. Operating temperature range is reduced to -40°C ~ 85°C. This part is suitable for applications where the reduced temperature range and increased propagation delay are acceptable.

MC74ACT573DWG (onsemi, Tube): This part is Active and ROHS3 compliant with identical electrical characteristics to MC74ACT573DWR2G, differing only in packaging format (Tube versus Tape & Reel). Selection between these two onsemi variants depends on procurement and assembly requirements.

For applications requiring the original 8:8 circuit configuration with -55°C ~ 125°C operating range and 3.1ns propagation delay, no direct substitute maintains all specifications. Applications tolerant of 1:8 configuration, -40°C ~ 85°C temperature range, and 10.5ns propagation delay may transition to MC74ACT573DWR2G or MC74ACT573DWG.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT573DWR2G or MC74ACT573DWG directly replace CD74ACT573M in all applications?

A: Direct replacement depends on application-specific requirements. Both onsemi parts maintain voltage supply range, tri-state output, and 20-SOIC package compatibility. However, the circuit configuration differs (1:8 versus 8:8), operating temperature range is narrower (-40°C ~ 85°C versus -55°C ~ 125°C), and propagation delay is longer (10.5ns versus 3.1ns). Applications must tolerate these parameter variations.

Q: What is the difference between MC74ACT573DWR2G and MC74ACT573DWG?

A: These parts are electrically identical. The primary difference is packaging format: MC74ACT573DWR2G is supplied in Tape & Reel (TR) format, while MC74ACT573DWG is supplied in Tube format. Selection depends on assembly equipment compatibility and procurement preferences.

Q: Why is CD74ACT573M96 not recommended as a substitute?

A: Although CD74ACT573M96 maintains identical electrical specifications and 8:8 circuit configuration, it carries Obsolete product status and is RoHS non-compliant. These factors make it unsuitable for new designs and applications subject to environmental compliance regulations.

Q: Are all substitute parts available in the same 20-SOIC package?

A: Yes, all identified substitute parts use the 20-SOIC (0.295", 7.50mm Width) surface mount package, ensuring physical and mechanical compatibility with the original CD74ACT573M.

Q: What compliance certifications apply to these parts?

A: CD74ACT573M, MC74ACT573DWR2G, and MC74ACT573DWG are ROHS3 compliant and REACH unaffected. CD74ACT573M96 is RoHS non-compliant. All parts carry ECCN EAR99 classification and HTSUS code 8542.39.0001.