74FCT573ATSOG Equivalent & Substitute Parts

Part Overview

The 74FCT573ATSOG is a D-Type Transparent Latch logic IC manufactured by Renesas Electronics Corporation, configured as a 1-channel 8:8 circuit with tri-state output in a 20-SOIC surface mount package. This component operates within the 4.75V to 5.25V supply voltage range with a 2ns propagation delay and is compliant with ROHS3 standards. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this logic function.

Substiute Parts

74FCT573ATSOG

Renesas Electronics CorporationIn Stock: 77774FCT573ATSOG Datasheet

Current PartRFQ

74FCT373ATSOG

IDT, Integrated Device Technology IncIn Stock: 471374FCT373ATSOG Datasheet

Parametric EquivalentRFQ

CY74FCT573ATSOC

Texas InstrumentsIn Stock: 2198CY74FCT573ATSOC Datasheet

MFR RecommendedRFQ

CY74FCT573ATSOCT

Texas InstrumentsIn Stock: 2295CY74FCT573ATSOCT Datasheet

MFR RecommendedRFQ

CY74FCT573CTSOC

Texas InstrumentsIn Stock: 3291CY74FCT573CTSOC Datasheet

MFR RecommendedRFQ

CY74FCT573TSOC

Texas InstrumentsIn Stock: 1101CY74FCT573TSOC Datasheet

MFR RecommendedRFQ

CY74FCT573TSOCT

Texas InstrumentsIn Stock: 1174CY74FCT573TSOCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74FCT573ATSOG are classified based on strict adherence to the following critical parameters:

Core Substitution Criteria:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Supply Voltage Range: 4.75V ~ 5.25V
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount
• Propagation Delay: 2ns

Substitution Categories:

Parametric Equivalent: Parts that match all core electrical and mechanical parameters but may differ in manufacturer or packaging format.

Manufacturer Recommended: Parts explicitly recommended by manufacturers as direct replacements, maintaining functional equivalence with potential variations in output current specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - Parametric Equivalent: The 74FCT373ATSOG (IDT) is the closest parametric equivalent, matching all electrical specifications and output current ratings of the original 74FCT573ATSOG. This part maintains Active product status, ensuring long-term availability and supply chain stability. Both parts are ROHS3 compliant and share identical package specifications.

Secondary Substitutes - Manufacturer Recommended: The CY74FCT573ATSOC, CY74FCT573ATSOCT, CY74FCT573CTSOC, and CY74FCT573TSOC (Texas Instruments) are manufacturer-recommended alternatives. These parts maintain all core functional parameters and operating specifications. The primary distinction is increased output current capability (32mA / 64mA versus 15mA / 48mA), which provides enhanced drive capability without compromising compatibility. All Texas Instruments variants are ROHS3 compliant and carry Active product status.

Packaging Considerations:

• CY74FCT573ATSOC: Tube packaging
• CY74FCT573ATSOCT: Tape & Reel (TR) packaging
• CY74FCT573CTSOC: Tube packaging
• CY74FCT573TSOC: Tube packaging
• CY74FCT573TSOCT: Discontinued at DiGi Electronics (not recommended for new designs)

Compliance Status: All recommended substitutes maintain ROHS3 compliance, REACH Unaffected status, and EAR99 export classification, ensuring regulatory alignment with the original part.

Frequently Asked Questions (FAQ)

Q: Can the 74FCT373ATSOG directly replace the 74FCT573ATSOG? A: Yes. The 74FCT373ATSOG is a parametric equivalent with identical electrical specifications, output current ratings, and package configuration. The primary advantage is Active product status, providing superior long-term availability compared to the Last Time Buy status of the original part.

Q: What is the difference between the Texas Instruments CY74FCT573 variants? A: The variants differ in packaging format: ATSOC uses Tube, ATSOCT uses Tape & Reel, CTSOC uses Tube, and TSOC uses Tube. All maintain identical electrical specifications and output current ratings (32mA / 64mA). Selection depends on assembly process requirements and volume considerations.

Q: Are the Texas Instruments parts with higher output current (32mA / 64mA) compatible with designs specified for 15mA / 48mA? A: Yes. Higher output current capability is a superset of the original specification and does not create compatibility issues. The increased drive capability provides additional design margin without affecting functional operation.

Q: What is the significance of the Last Time Buy status for the 74FCT573ATSOG? A: Last Time Buy status indicates that Renesas Electronics has ceased production and will not accept new orders beyond a specified date. This necessitates transition to alternative parts for ongoing production and future designs. All recommended substitutes carry Active status, ensuring continued availability.

Q: Are all substitute parts ROHS3 compliant? A: Yes. The 74FCT373ATSOG and all Texas Instruments CY74FCT573 variants are ROHS3 compliant, maintaining regulatory alignment with the original 74FCT573ATSOG.

Q: Which substitute should be selected for new designs? A: For new designs, the 74FCT373ATSOG (IDT) is recommended as the primary choice due to parametric equivalence and Active product status. If Texas Instruments sourcing is preferred, the CY74FCT573ATSOC, CY74FCT573ATSOCT, or CY74FCT573CTSOC are suitable alternatives, with packaging selection based on assembly requirements.