74ACT151SCX Equivalent & Substitute Parts

Part Overview

The 74ACT151SCX is a 1 x 8:1 multiplexer logic integrated circuit manufactured by onsemi in a 16-SOIC surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. The 74ACT151 series provides single-supply operation with standardized output current specifications, making it suitable for digital signal routing applications requiring 8-to-1 data selection.

Substiute Parts

74ACT151SCX

onsemiIn Stock: 508874ACT151SCX Datasheet

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CD74ACT151M96

Texas InstrumentsIn Stock: 3398CD74ACT151M96 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ACT151SCX is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: Must be 1 x 8:1 multiplexer topology
• Package Type: Must be 16-SOIC with identical 0.154" (3.90mm) width
• Mounting Technology: Must be surface mount compatible
• Voltage Supply Range: Must support 4.5V ~ 5.5V single supply operation
• Output Current Specifications: Must provide 24mA output capability (both high and low states)
• Base Series Designation: Must belong to the 74ACT151 logic family

The CD74ACT151M96 manufactured by Texas Instruments meets all substitution criteria as an active-status alternative within the same functional family and package specification.

Parameter Comparison

Engineering Selection Recommendations

The CD74ACT151M96 is the direct functional equivalent for the obsolete 74ACT151SCX. Selection of the Texas Instruments alternative provides the following advantages:

• Active Product Status: The CD74ACT151M96 maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Extended Temperature Range: Operating specification of -55°C ~ 125°C exceeds the original -40°C ~ 85°C range, providing broader application flexibility
• Compliance Certifications: RoHS3 compliance and REACH unaffected status align with current regulatory requirements
• Identical Electrical Performance: All critical electrical parameters (voltage supply, output current, circuit configuration) are identical to the original part
• Package Compatibility: 16-SOIC surface mount package dimensions are identical, enabling direct PCB layout compatibility

Frequently Asked Questions (FAQ)

Q: Can the CD74ACT151M96 be used as a direct replacement for the 74ACT151SCX?

A: Yes. Both parts share identical circuit configuration (1 x 8:1 multiplexer), package type (16-SOIC), voltage supply range (4.5V ~ 5.5V), and output current specifications (24mA). The CD74ACT151M96 is electrically and mechanically compatible for direct substitution.

Q: What is the primary difference between these two parts?

A: The CD74ACT151M96 has an extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 85°C) and maintains active product status, whereas the 74ACT151SCX is obsolete. Both parts are functionally equivalent for standard applications within the original temperature specification.

Q: Are there any package or pinout differences?

A: No. Both parts use the 16-SOIC package with identical 0.154" (3.90mm) width. Pinout and PCB footprint compatibility is guaranteed.

Q: Does the CD74ACT151M96 require any design modifications?

A: No design modifications are required. The substitute part operates within the same voltage supply range and provides identical output current specifications. Existing circuit designs require no alteration.

Q: What certifications apply to the substitute part?

A: The CD74ACT151M96 is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.