74F244SJ Equivalent & Substitute Parts

Part Overview

The 74F244SJ is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This component is classified as obsolete, which necessitates identification of equivalent and substitute parts for ongoing design requirements and production continuity. The 74F244 series maintains consistent functional specifications across multiple manufacturers and packaging variants, enabling direct substitution based on electrical and mechanical parameter alignment.

Substiute Parts

74F244SJ

onsemiIn Stock: 501374F244SJ Datasheet

Current PartRFQ

SN74F244NSR

Texas InstrumentsIn Stock: 2150SN74F244NSR Datasheet

DirectRFQ

SN74F244DW

Texas InstrumentsIn Stock: 2747SN74F244DW Datasheet

SimilarRFQ

SN74F244DWR

Texas InstrumentsIn Stock: 7819SN74F244DWR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74F244SJ is determined by strict alignment of the following electrical and mechanical parameters:

• Logic Type: Buffer, Non-Inverting (mandatory match)
• Number of Elements: 2 (mandatory match)
• Number of Bits per Element: 4 (mandatory match)
• Output Type: 3-State (mandatory match)
• Voltage - Supply: 4.5V ~ 5.5V (mandatory match)
• Operating Temperature: 0°C ~ 70°C (TA) (mandatory match)
• Mounting Type: Surface Mount (mandatory match)
• Base Product Number: 74F244 (mandatory match)

The substitute parts identified maintain these core electrical specifications. Variations in packaging dimensions, current output ratings, and product status are secondary considerations that do not affect functional equivalence within the specified operating parameters.

Parameter Comparison

Engineering Selection Recommendations

SN74F244NSR (Texas Instruments) is the primary substitute for the 74F244SJ. This part maintains identical package dimensions (20-SOIC 0.209", 5.30mm Width), carries Active product status, and holds ROHS3 compliance certification. The electrical specifications align completely with the original component.

SN74F244DWR (Texas Instruments) is an alternative substitute with Active product status and ROHS3 compliance. This part features a larger package footprint (20-SOIC 0.295", 7.50mm Width) and is supplied in Cut Tape & Digi-Reel packaging. PCB layout modifications are required to accommodate the increased package dimensions.

SN74F244DW (Texas Instruments) is available as a substitute with Last Time Buy product status and ROHS3 compliance. This part also requires PCB layout modifications due to the larger package footprint (20-SOIC 0.295", 7.50mm Width). Last Time Buy status indicates limited future availability.

Frequently Asked Questions (FAQ)

Q: Can SN74F244NSR be used as a direct replacement for 74F244SJ without PCB modifications?

A: Yes. The SN74F244NSR maintains identical package dimensions (20-SOIC 0.209", 5.30mm Width) and all electrical specifications, enabling direct substitution without PCB layout changes.

Q: What is the difference between SN74F244DWR and SN74F244NSR?

A: Both parts are electrically equivalent and carry Active product status. The primary difference is packaging format: SN74F244DWR is supplied in Cut Tape & Digi-Reel format, while SN74F244NSR is supplied in Tape & Reel format. SN74F244DWR features a larger package footprint (0.295" width vs. 0.209" width), requiring PCB modifications.

Q: Why is the 74F244SJ classified as obsolete?

A: The 74F244SJ is an onsemi product that has reached end-of-life status. Texas Instruments continues to manufacture equivalent 74F244 variants in Active status, providing continuity for this logic function.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified Texas Instruments substitutes (SN74F244NSR, SN74F244DW, SN74F244DWR) carry ROHS3 compliance certification.

Q: Can SN74F244DW be used if SN74F244NSR is unavailable?

A: SN74F244DW is electrically equivalent but carries Last Time Buy status, indicating limited future availability. While functionally suitable, SN74F244DWR is preferred for new designs due to Active product status.