74FCT3244SOG Equivalent & Substitute Parts

Part Overview

The 74FCT3244SOG is a non-inverting buffer IC manufactured by Renesas Electronics Corporation, designed for logic signal buffering applications. This 20-SOIC surface mount device features 2 elements with 4 bits per element and 3-state output capability, operating across a 2.7V to 3.6V supply voltage range. The device is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to address inventory availability, alternative sourcing requirements, or specific application voltage specifications while maintaining functional and mechanical compatibility.

Substiute Parts

74FCT3244SOG

Renesas Electronics CorporationIn Stock: 135174FCT3244SOG Datasheet

Current PartRFQ

CY74FCT2244CTSOC

Texas InstrumentsIn Stock: 1688CY74FCT2244CTSOC Datasheet

UpgradeRFQ

74FCT3244ASOG

IDT, Integrated Device Technology IncIn Stock: 224674FCT3244ASOG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74FCT3244SOG are classified into two categories based on allowed electrical and mechanical parameters:

Parametric Equivalent (74FCT3244ASOG): This substitute maintains identical electrical specifications including voltage supply range (2.7V ~ 3.6V), output current ratings (8mA, 24mA), and all functional parameters. The device is manufactured by IDT (Integrated Device Technology Inc) and shares the same base product number 74FCT3244. Packaging is identical at 20-SOIC form factor. This classification allows direct substitution in applications where the original Renesas part is unavailable.

Upgrade Substitute (CY74FCT2244CTSOC): This substitute operates at a different voltage supply range (4.75V ~ 5.25V) and exhibits different output current specifications (15mA, 12mA). Manufactured by Texas Instruments, this device is suitable only for applications designed for 5V logic operation. The identical package format (20-SOIC) and functional architecture (2 elements, 4 bits per element, 3-state output) permit substitution in systems where the higher voltage specification is compatible with circuit design requirements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution: The 74FCT3244ASOG is the primary substitute when the original 74FCT3244SOG is unavailable. Both devices maintain identical electrical specifications, operating temperature range, and RoHS3 compliance status. All three parts are in active production, ensuring continued availability. Selection between Renesas and IDT manufacturing sources depends on supply chain requirements and procurement preferences, as functional performance is equivalent.

For Voltage-Specific Applications: The CY74FCT2244CTSOC substitute is applicable only in systems designed for 5V logic operation (4.75V ~ 5.25V supply range). This device is not suitable for 3.3V systems specified for the 74FCT3244SOG. The different output current ratings (15mA high, 12mA low versus 8mA high, 24mA low) must be evaluated against circuit load requirements. All three devices maintain identical package geometry and thermal characteristics, permitting direct PCB placement compatibility.

Frequently Asked Questions (FAQ)

Q: Can the CY74FCT2244CTSOC replace the 74FCT3244SOG in a 3.3V circuit? A: No. The CY74FCT2244CTSOC operates at 4.75V to 5.25V supply voltage and is not specified for 3.3V operation. Use only in systems designed for 5V logic levels. The 74FCT3244ASOG is the correct substitute for 3.3V applications.

Q: Are all three parts physically identical? A: Yes. All three devices use the 20-SOIC package format with 0.295" (7.50mm) width. PCB footprints and mounting requirements are identical, permitting direct component replacement without layout modifications.

Q: What is the difference in output current capability between the main part and the upgrade substitute? A: The 74FCT3244SOG provides 8mA output high and 24mA output low. The CY74FCT2244CTSOC provides 15mA output high and 12mA output low. Circuit design must account for these differences when selecting the appropriate substitute for specific load requirements.

Q: Are all parts RoHS3 compliant? A: Yes. The 74FCT3244SOG, 74FCT3244ASOG, and CY74FCT2244CTSOC are all ROHS3 compliant, meeting environmental and regulatory requirements for commercial applications.

Q: Which substitute should be selected for general inventory replacement? A: The 74FCT3244ASOG is the recommended parametric equivalent for direct replacement in existing 3.3V designs. It maintains all electrical specifications and operating characteristics of the original 74FCT3244SOG.