74FR244SCX Equivalent & Substitute Parts

Part Overview

The 74FR244SCX is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability in a 20-SOIC package. This device is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 74FR244SCX operates within a 4.5V to 5.5V supply voltage range and is suitable for applications requiring buffering and signal distribution in TTL-compatible logic circuits.

Substiute Parts

74FR244SCX

onsemiIn Stock: 119574FR244SCX Datasheet

Current PartRFQ

SN74F244DW

Texas InstrumentsIn Stock: 2747SN74F244DW Datasheet

SimilarRFQ

SN74AS244ADWR

Texas InstrumentsIn Stock: 879SN74AS244ADWR Datasheet

Parametric EquivalentRFQ

SN74BCT244DWR

Texas InstrumentsIn Stock: 735SN74BCT244DWR Datasheet

Parametric EquivalentRFQ

SN74F244DWR

Texas InstrumentsIn Stock: 7819SN74F244DWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74FR244SCX are qualified based on strict electrical and mechanical parameter matching. All substitute devices maintain identical specifications across the following critical parameters:

• Logic Type: Buffer, Non-Inverting
• Number of Elements: 2
• Number of Bits per Element: 4
• Output Type: 3-State
• Current - Output High, Low: 15mA, 64mA
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: 0°C ~ 70°C (TA)
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are differentiated by manufacturer, product series, product status, and packaging format. All qualified substitutes are manufactured by Texas Instruments and represent different logic families (74F, 74AS, 74BCT) within the standard TTL logic hierarchy.

Parameter Comparison

Engineering Selection Recommendations

Selection of substitute parts should prioritize product status and compliance requirements:

Active Status Parts (Recommended for New Designs): SN74AS244ADWR and SN74BCT244DWR are both classified as Active products, ensuring long-term availability and continued manufacturer support. Both devices are ROHS3 Compliant and available in Tape & Reel packaging suitable for automated assembly processes.

Last Time Buy Status: SN74F244DW is classified as Last Time Buy, indicating limited future availability. This part is suitable for legacy system maintenance but not recommended for new production designs.

Active Alternative with High Inventory: SN74F244DWR is classified as Active with the highest inventory level (7783 Pcs), available in Cut Tape and Digi-Reel packaging formats, and ROHS3 Compliant.

All substitute parts maintain identical electrical performance and mechanical compatibility with the 74FR244SCX within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can SN74F244DW be used as a direct replacement for 74FR244SCX?

A: Yes. SN74F244DW is electrically and mechanically equivalent to the 74FR244SCX. Both devices share identical logic type, element count, bit configuration, output type, current ratings, supply voltage range, operating temperature, and 20-SOIC package specifications. However, SN74F244DW is classified as Last Time Buy, limiting future procurement availability.

Q: What is the difference between SN74AS244ADWR and SN74BCT244DWR?

A: Both parts are parametrically equivalent to the 74FR244SCX and maintain identical electrical and mechanical specifications. The primary differences are manufacturer series designation (74AS versus 74BCT) and inventory availability. Both are Active status products with ROHS3 compliance and Tape & Reel packaging.

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

A: Yes. All substitute parts use the 20-SOIC package with 0.295" width and 7.50mm width specification, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: Are all substitute parts ROHS3 Compliant?

A: All Texas Instruments substitute parts (SN74F244DW, SN74AS244ADWR, SN74BCT244DWR, SN74F244DWR) are ROHS3 Compliant. The original 74FR244SCX does not specify RoHS status.

Q: Which substitute part offers the best long-term availability?

A: SN74F244DWR and SN74AS244ADWR are both classified as Active products. SN74F244DWR has the highest current inventory (7783 Pcs), while SN74AS244ADWR is available in standard Tape & Reel format (803 Pcs). Both are suitable for new designs requiring long-term component availability.