74FCT573ATSOG8 Equivalent & Substitute Parts

Part Overview

The 74FCT573ATSOG8 is a D-Type Transparent Latch logic IC manufactured by Renesas Electronics Corporation, configured as a single 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 and is designed for applications requiring transparent latch functionality with propagation delay of 2ns.

The main part is currently in Last Time Buy status, indicating end-of-life production. Identifying qualified substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term inventory planning.

Substiute Parts

74FCT573ATSOG8

Renesas Electronics CorporationIn Stock: 76574FCT573ATSOG8 Datasheet

Current PartRFQ

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

Substitution eligibility for the 74FCT573ATSOG8 is determined by strict equivalence across the following critical parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage - Supply: 4.75V ~ 5.25V
• Delay Time - Propagation: 2ns
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

All identified substitute parts maintain identical functional specifications and package dimensions. Variations in packaging format (Tube vs. Tape & Reel) and output current ratings do not affect functional interchangeability within the specified electrical operating parameters. Texas Instruments CY74FCT573 series variants meet all substitution criteria and are available in Active product status, providing long-term supply assurance.

Parameter Comparison

Engineering Selection Recommendations

All Texas Instruments CY74FCT573 variants listed above are functionally equivalent to the 74FCT573ATSOG8 and maintain full electrical and mechanical compatibility. Selection among substitute parts should be based on the following criteria:

For Active Product Status with Assured Long-Term Availability: CY74FCT573ATSOC, CY74FCT573ATSOCT, and CY74FCT573CTSOC are recommended as primary substitutes. These parts carry Active product status, ensuring continued manufacturing and supply chain support.

For Packaging Format Requirements: CY74FCT573ATSOCT is the direct equivalent in Tape & Reel packaging, matching the original 74FCT573ATSOG8 format. CY74FCT573ATSOC and CY74FCT573CTSOC are available in Tube packaging for alternative assembly workflows.

For Inventory Availability: CY74FCT573CTSOC offers the highest current inventory level at 3,198 pieces. CY74FCT573ATSOCT provides 2,200 pieces in Tape & Reel format.

Avoid: CY74FCT573TSOCT is marked as Discontinued at DiGi Electronics and should not be selected for new designs or long-term production planning.

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can the CY74FCT573 series parts from Texas Instruments directly replace the Renesas 74FCT573ATSOG8?

A: Yes. All CY74FCT573 variants listed maintain identical logic type, circuit configuration, output type, supply voltage range, propagation delay, operating temperature range, package dimensions, and mounting type. Functional interchangeability is confirmed across all specified electrical parameters.

Q: What is the difference between Tube and Tape & Reel packaging options?

A: Tube and Tape & Reel are alternative packaging formats for the same component. Tape & Reel (TR) is optimized for automated pick-and-place assembly equipment. Tube packaging is suitable for manual assembly or lower-volume production. Both formats contain identical die and electrical specifications. Selection depends on assembly process requirements, not functional performance.

Q: Are the output current ratings different between the Renesas and Texas Instruments parts?

A: Yes. The 74FCT573ATSOG8 specifies 15mA output high and 48mA output low current. Texas Instruments CY74FCT573 variants specify 32mA output high and 64mA output low current. These higher ratings in the substitute parts provide enhanced drive capability and do not create compatibility issues. The substitute parts can deliver greater output current while remaining compatible with circuits designed for the original specifications.

Q: Why is the 74FCT573ATSOG8 marked as Last Time Buy?

A: Last Time Buy status indicates that Renesas Electronics has discontinued production of this part. Customers are advised to transition to alternative sources to ensure long-term supply continuity. The Texas Instruments CY74FCT573 series provides functionally equivalent alternatives in Active production status.

Q: Which substitute part should be selected for new product designs?

A: For new designs, select from CY74FCT573ATSOC, CY74FCT573ATSOCT, or CY74FCT573CTSOC, all carrying Active product status. If Tape & Reel packaging is required for automated assembly, CY74FCT573ATSOCT is the optimal choice. If Tube packaging is acceptable, CY74FCT573CTSOC offers the highest inventory availability.

Q: Are there any compliance or certification differences between the parts?

A: No. All parts maintain identical ROHS3 compliance status and Moisture Sensitivity Level 1 rating. REACH and ECCN classifications are consistent across all substitute options, ensuring regulatory compliance for equivalent applications.