CY74FCT373CTSOCT Equivalent & Substitute Parts

Part Overview

The CY74FCT373CTSOCT 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 obsolete, indicating discontinuation from the manufacturer's active product line. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this logic latch architecture.

Substiute Parts

CY74FCT373CTSOCT

Texas InstrumentsIn Stock: 741CY74FCT373CTSOCT Datasheet

Current PartRFQ

CY74FCT373ATSOCT

Texas InstrumentsIn Stock: 742CY74FCT373ATSOCT Datasheet

Parametric EquivalentRFQ

CY74FCT573ATSOCT

Texas InstrumentsIn Stock: 2295CY74FCT573ATSOCT Datasheet

Parametric EquivalentRFQ

CY74FCT573TSOCT

Texas InstrumentsIn Stock: 1174CY74FCT573TSOCT Datasheet

Parametric EquivalentRFQ

74FCT373ATSOG

IDT, Integrated Device Technology IncIn Stock: 471374FCT373ATSOG Datasheet

MFR RecommendedRFQ

CY74FCT373ATSOC

Texas InstrumentsIn Stock: 2976CY74FCT373ATSOC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CY74FCT373CTSOCT is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

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

Secondary Consideration:

• Current Output specifications (High/Low) must remain within or equal to the original part specifications to ensure compatible drive capability in the target circuit.

All substitute parts listed maintain identical logic functionality, electrical performance characteristics, and physical package dimensions as the main part. Variations in product status, packaging format (Tape & Reel, Tube, Bulk), and manufacturer do not affect electrical interchangeability when all primary criteria are met.

Parameter Comparison

Engineering Selection Recommendations

Preferred Substitutes (Active Product Status):

CY74FCT573ATSOCT and CY74FCT373ATSOC are the recommended primary substitutes, both maintaining active product status with Texas Instruments. These parts provide assured long-term availability and supply chain continuity. CY74FCT573ATSOCT is available in Tape & Reel packaging with 2200 units in stock, while CY74FCT373ATSOC is supplied in Tube format with 2952 units in stock. Both maintain full electrical equivalence and ROHS3 compliance.

Alternative Substitute (Active, Different Manufacturer):

74FCT373ATSOG, manufactured by IDT (Integrated Device Technology Inc), is an active product with 4702 units in stock and represents a manufacturer-recommended alternative. This part maintains electrical equivalence across all critical parameters with the exception of output current specifications (15mA / 48mA versus 32mA / 64mA). Selection of this part requires circuit-level verification that reduced output drive capability does not compromise system performance.

Secondary Substitutes (Discontinued Status):

CY74FCT373ATSOCT and CY74FCT573TSOCT are classified as discontinued at DiGi Electronics but remain electrically equivalent. These parts may be considered only when primary substitutes are unavailable and existing inventory is confirmed through alternative distribution channels.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT373CTSOCT be directly replaced with CY74FCT573ATSOCT?

A: Yes. Both parts are D-Type Transparent Latch ICs with 8:8 circuit configuration, tri-state output, identical voltage supply range (4.75V ~ 5.25V), 2ns propagation delay, and 20-SOIC surface mount packaging. Electrical and mechanical compatibility is confirmed across all specified parameters.

Q: What is the difference between the CY74FCT373 and CY74FCT573 base product numbers?

A: The base product numbers differ, but both variants maintain identical electrical specifications and package configurations as specified in the provided data. The substitution is valid based on matching all critical electrical and mechanical parameters.

Q: Why does 74FCT373ATSOG show lower output current (15mA / 48mA) compared to the original part (32mA / 64mA)?

A: The IDT-manufactured 74FCT373ATSOG variant has reduced output current specifications. This part remains electrically equivalent for logic-level operation but may not provide sufficient drive capability for circuits requiring the full 32mA / 64mA output current. Circuit-level analysis is required to confirm compatibility in applications with high current load demands.

Q: Are all substitute parts ROHS3 compliant?

A: Five of the six substitute parts are confirmed ROHS3 compliant. The 74FCT373ATSOG (IDT manufacturer) does not specify RoHS status in the provided data. Compliance verification with the IDT part should be obtained directly from the manufacturer if RoHS certification is a design requirement.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Tape & Reel (CY74FCT573ATSOCT), Tube (CY74FCT373ATSOC), and Bulk (74FCT373ATSOG). Selection of packaging format depends on production volume requirements and inventory management practices. All formats maintain identical electrical and mechanical specifications.

Q: Is the 20-SOIC package dimension identical across all substitute parts?

A: Yes. All substitute parts use the 20-SOIC package with dimensions of 0.295" × 7.50mm width. PCB footprint and assembly compatibility are maintained across all listed substitutes.