74ACTQ244SJ Equivalent & Substitute Parts

Part Overview

The 74ACTQ244SJ is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This device is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

The 74ACTQ244SJ operates within a 4.5V to 5.5V supply voltage range and is rated for -40°C to 85°C operating temperature. Its 20-SOP surface mount package and 24mA output current specifications define the core electrical and mechanical requirements for identifying compatible alternatives.

Substiute Parts

74ACTQ244SJ

onsemiIn Stock: 113074ACTQ244SJ Datasheet

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CD74ACT244M96

Texas InstrumentsIn Stock: 2027CD74ACT244M96 Datasheet

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SN74ACT244DW

Texas InstrumentsIn Stock: 7278SN74ACT244DW Datasheet

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SN74ACT244DWR

Texas InstrumentsIn Stock: 93153SN74ACT244DWR Datasheet

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SN74ACT244IDWREP

Texas InstrumentsIn Stock: 770SN74ACT244IDWREP Datasheet

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SN74ACT244MDWREP

Texas InstrumentsIn Stock: 814SN74ACT244MDWREP Datasheet

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SN74ACT244MNSREP

Texas InstrumentsIn Stock: 2291SN74ACT244MNSREP Datasheet

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SN74ACT244NSR

Texas InstrumentsIn Stock: 2425SN74ACT244NSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ACTQ244SJ is determined by the following critical parameters:

• Logic function: Buffer, Non-Inverting with 2 elements and 4 bits per element
• Output configuration: 3-State output
• Electrical performance: 24mA output current (high and low)
• Supply voltage range: 4.5V ~ 5.5V
• Package type: 20-pin surface mount (SOIC or SOP variants)
• Moisture sensitivity: MSL 1 (Unlimited)

Substitute parts must maintain identical logic functionality, output current specifications, and supply voltage compatibility. Package variants (20-SOIC vs. 20-SOP) are mechanically interchangeable within the specified dimensions. Operating temperature range variations are noted where they differ from the original specification.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring direct replacement of the 74ACTQ244SJ, the following selection criteria apply:

Package-Matched Substitutes (20-SO, 5.30mm width):

• SN74ACT244MNSREP and SN74ACT244NSR provide identical package dimensions to the original 74ACTQ244SJ. Both are manufactured by Texas Instruments and maintain full electrical compatibility. SN74ACT244MNSREP offers extended operating temperature range (-55°C ~ 125°C) compared to the original specification. Both parts are RoHS3 compliant and carry active product status.

Package-Compatible Substitutes (20-SOIC, 7.50mm width):

• CD74ACT244M96, SN74ACT244DWR, SN74ACT244IDWREP, and SN74ACT244MDWREP are mechanically compatible alternatives with identical electrical specifications. These parts feature the wider 20-SOIC package format. SN74ACT244DWR and CD74ACT244M96 maintain the original -40°C ~ 85°C operating temperature range. SN74ACT244MDWREP provides extended temperature operation (-55°C ~ 125°C). All active-status parts are RoHS3 compliant.

Discontinued Status Consideration:

• SN74ACT244DW is listed as discontinued at DiGi Electronics and should not be selected for new designs requiring long-term availability.

All substitute parts share identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8542.39.0001) with the original part.

Frequently Asked Questions (FAQ)

Q: Can I use a 20-SOIC package substitute in place of the 20-SOP original?

A: The 20-SOIC and 20-SOP packages are mechanically compatible for PCB footprints designed for the narrower 5.30mm width. However, the 20-SOIC variants (7.50mm width) require verification that your PCB layout accommodates the wider package. If your design specifies the 5.30mm width, use SN74ACT244MNSREP or SN74ACT244NSR for direct package compatibility.

Q: What is the difference between SN74ACT244MNSREP and SN74ACT244NSR?

A: Both parts use the 20-SO package (5.30mm width) and maintain 4.5V ~ 5.5V supply voltage and 24mA output current specifications. SN74ACT244MNSREP operates across -55°C ~ 125°C, while SN74ACT244NSR is rated for -40°C ~ 85°C. Select SN74ACT244MNSREP for applications requiring extended temperature operation.

Q: Are all substitute parts RoHS compliant?

A: All active-status substitute parts listed (CD74ACT244M96, SN74ACT244DWR, SN74ACT244IDWREP, SN74ACT244MDWREP, SN74ACT244MNSREP, and SN74ACT244NSR) are RoHS3 compliant. SN74ACT244DW is also RoHS3 compliant but is discontinued.

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

A: SN74ACT244DWR and CD74ACT244M96 are both active-status parts from Texas Instruments with substantial inventory levels (93,100 and 2,000 units respectively). Both maintain full electrical compatibility with the original 74ACTQ244SJ.

Q: Can I substitute based on the base product number 74ACT244?

A: The base product number 74ACT244 identifies the core logic function shared across all listed parts. However, substitution must account for specific package variants, temperature ratings, and product status. Direct part number matching ensures compatibility with your specific application requirements.