74ACT151SC Equivalent & Substitute Parts

Part Overview

The 74ACT151SC is a 1 x 8:1 multiplexer logic IC manufactured by onsemi in a 16-SOIC surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The 74ACT151 series provides single-supply multiplexing functionality suitable for digital logic applications requiring data selection from eight input lines.

Substiute Parts

74ACT151SC

onsemiIn Stock: 162374ACT151SC Datasheet

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CD74ACT151M96

Texas InstrumentsIn Stock: 3398CD74ACT151M96 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACT151SC is determined by strict equivalence in the following parameters:

• Circuit configuration: 1 x 8:1 multiplexer topology
• Output drive capability: 24mA high and low current
• Supply voltage compatibility: 4.5V to 5.5V single supply operation
• Package footprint: 16-SOIC with 0.154" width (3.90mm)
• Surface mount mounting type
• Moisture sensitivity: MSL 1 classification

The CD74ACT151M96 from Texas Instruments meets all these core electrical and mechanical requirements, enabling direct functional substitution in applications currently using the 74ACT151SC.

Parameter Comparison

Engineering Selection Recommendations

The CD74ACT151M96 is the qualified substitute for the obsolete 74ACT151SC. Key selection factors:

• Product Status: The 74ACT151SC is obsolete; the CD74ACT151M96 is active production, ensuring long-term availability and supply chain stability.
• Compliance: Both parts maintain REACH Unaffected status and EAR99 classification, with the CD74ACT151M96 additionally certified as ROHS3 Compliant.
• Operating Temperature: The CD74ACT151M96 supports an extended operating range of -55°C to 125°C compared to the 74ACT151SC range of -40°C to 85°C, providing broader application flexibility.
• Electrical Equivalence: All critical electrical parameters—output current, supply voltage, and circuit configuration—are identical between the two parts.
• Package Compatibility: Both parts use the identical 16-SOIC footprint, enabling direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT151M96 directly replace the 74ACT151SC on existing PCBs?

A: Yes. Both parts share identical 16-SOIC package dimensions and pinout. No PCB modifications are required for substitution.

Q: What is the primary reason for substituting the 74ACT151SC?

A: The 74ACT151SC is obsolete. The CD74ACT151M96 provides equivalent functionality with active production status and improved long-term availability.

Q: Are there electrical differences between these parts?

A: No. Output current ratings (24mA high/low), supply voltage range (4.5V–5.5V), and circuit configuration (1 x 8:1 multiplexer) are identical.

Q: Does the extended operating temperature range of the CD74ACT151M96 affect compatibility?

A: No. The extended range (-55°C to 125°C versus -40°C to 85°C) provides additional operational margin and does not impact compatibility with existing designs.

Q: Are both parts RoHS compliant?

A: The CD74ACT151M96 is ROHS3 Compliant. Both parts maintain REACH Unaffected status and EAR99 export classification.

Q: What packaging options are available for the CD74ACT151M96?

A: The CD74ACT151M96 is supplied in Cut Tape (CT) and Digi-Reel® packaging formats.