CY74FCT244CTSOCT Equivalent & Substitute Parts

Part Overview

The CY74FCT244CTSOCT is a non-inverting buffer logic IC manufactured by Texas Instruments, featuring 2 elements with 4 bits per element and 3-state output capability in a 20-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement continuity. The 74FCT series represents a standard logic buffer architecture with consistent electrical and mechanical specifications across multiple manufacturers.

Substiute Parts

CY74FCT244CTSOCT

Texas InstrumentsIn Stock: 1161CY74FCT244CTSOCT Datasheet

Current PartRFQ

CY74FCT244ATSOCT

Cypress Semiconductor CorpIn Stock: 4473CY74FCT244ATSOCT Datasheet

Parametric EquivalentRFQ

CY74FCT244TSOCT

Texas InstrumentsIn Stock: 1117CY74FCT244TSOCT Datasheet

Parametric EquivalentRFQ

74FCT244ATSOG

IDT, Integrated Device Technology IncIn Stock: 145874FCT244ATSOG Datasheet

MFR RecommendedRFQ

74FCT244ATSOG8

IDT, Integrated Device Technology IncIn Stock: 407474FCT244ATSOG8 Datasheet

MFR RecommendedRFQ

74FCT244CTSOG

IDT, Integrated Device Technology IncIn Stock: 221774FCT244CTSOG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CY74FCT244CTSOCT is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Logic Type: Buffer, Non-Inverting
• Number of Elements: 2
• Number of Bits per Element: 4
• Output Type: 3-State
• Voltage - Supply: 4.75V ~ 5.25V
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

Secondary Consideration:

• Current - Output High, Low: Parts with 32mA/64mA output current are direct equivalents. Parts with 15mA/64mA output current maintain functional compatibility within the 3-state buffer architecture but with reduced output drive capability.

All identified substitute parts maintain the base product number 74FCT series designation and are available from active manufacturers, ensuring long-term procurement viability.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Output Current): CY74FCT244ATSOCT and CY74FCT244TSOCT provide direct parametric equivalence to the CY74FCT244CTSOCT. Both parts maintain 32mA/64mA output current specifications and are available from active manufacturers. CY74FCT244ATSOCT (Cypress Semiconductor) offers the highest inventory availability at 4400 units. CY74FCT244TSOCT (Texas Instruments) maintains continuity with the original manufacturer.

Functional Equivalents (Reduced Output Current): 74FCT244ATSOG, 74FCT244ATSOG8, and 74FCT244CTSOG (all IDT) maintain full functional compatibility with reduced output high current of 15mA versus the original 32mA. These parts are suitable for applications where output drive requirements do not exceed 15mA. All three IDT variants are active products with substantial inventory availability.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the original part. The CY74FCT244CTSOCT specifies MSL 1 (Unlimited); verify moisture sensitivity requirements for substitute parts in high-humidity storage or assembly environments.

Frequently Asked Questions (FAQ)

Q: Can I use 74FCT244ATSOG as a direct replacement for CY74FCT244CTSOCT? A: Yes, functionally. The 74FCT244ATSOG maintains identical logic architecture, voltage supply range, operating temperature, and package specifications. The output high current is reduced from 32mA to 15mA. Verify that your circuit design does not require the higher 32mA output drive capability.

Q: What is the difference between CY74FCT244ATSOCT and CY74FCT244TSOCT? A: Both parts are parametric equivalents with identical electrical specifications (32mA/64mA output current, 4.75V ~ 5.25V supply, -40°C ~ 85°C operating range) and package (20-SOIC). The primary difference is manufacturer: Cypress Semiconductor versus Texas Instruments. CY74FCT244ATSOCT offers higher inventory availability.

Q: Are all substitute parts available in the same 20-SOIC package? A: Yes. All substitute parts listed use the 20-SOIC (0.295", 7.50mm Width) surface mount package, ensuring mechanical and electrical compatibility with existing PCB designs.

Q: Why do some parts have lower output current specifications? A: IDT variants (74FCT244ATSOG, 74FCT244ATSOG8, 74FCT244CTSOG) specify 15mA output high current compared to 32mA in the original and Cypress/Texas Instruments equivalents. This reflects manufacturing process differences while maintaining functional buffer operation. Select based on your circuit's output load requirements.

Q: Is the CY74FCT244CTSOCT still available for procurement? A: The CY74FCT244CTSOCT is classified as obsolete. Current inventory of 1140 units is available, but long-term procurement should transition to active equivalents such as CY74FCT244ATSOCT or CY74FCT244TSOCT.