74AC151SC Equivalent & Substitute Parts

Part Overview

The 74AC151SC 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 equivalent substitute parts necessary for new designs and ongoing production requirements. The 74AC151 series provides single-supply multiplexing functionality suitable for digital logic applications requiring data selection from eight input lines.

Substiute Parts

74AC151SC

onsemiIn Stock: 99874AC151SC Datasheet

Current PartRFQ

CD74AC151M96

Texas InstrumentsIn Stock: 1457CD74AC151M96 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74AC151SC is determined by the following critical parameters that must remain consistent:

• Circuit Configuration: 1 x 8:1 multiplexer topology
• Package Type: 16-SOIC surface mount package with 0.154" (3.90mm) width
• Output Current Capability: 24mA high and low output current
• Voltage Supply Architecture: Single supply operation
• Base Series Compatibility: 74AC logic family

The CD74AC151M96 manufactured by Texas Instruments meets all substitution criteria. Both parts share identical circuit configuration, package specifications, and output current ratings. The substitute part maintains functional and electrical equivalence while offering active product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The CD74AC151M96 from Texas Instruments is the direct equivalent substitute for the obsolete 74AC151SC. Selection of the substitute part is justified by:

• Identical Functional Specifications: Both parts implement the same 1 x 8:1 multiplexer circuit with matching output current ratings and package footprint
• Active Product Status: The CD74AC151M96 maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both parts maintain REACH Unaffected status and equivalent moisture sensitivity ratings
• Enhanced Operating Range: The substitute part provides extended voltage supply range (1.5V ~ 5.5V versus 2V ~ 6V) and wider operating temperature range (-55°C ~ 125°C versus -40°C ~ 85°C), offering greater design flexibility

The CD74AC151M96 is suitable for direct replacement in applications currently using the 74AC151SC without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the CD74AC151M96 be used as a direct replacement for the 74AC151SC?

A: Yes. Both parts share identical circuit configuration (1 x 8:1 multiplexer), output current specifications (24mA), and 16-SOIC package dimensions. The substitute part is functionally and electrically equivalent.

Q: What are the key differences between these parts?

A: The primary differences are product status and operating ranges. The CD74AC151M96 is active production, while the 74AC151SC is obsolete. The substitute part supports lower minimum supply voltage (1.5V versus 2V) and wider operating temperature range (-55°C to 125°C versus -40°C to 85°C).

Q: Are there any package compatibility concerns?

A: No. Both parts use identical 16-SOIC surface mount packaging with 0.154" (3.90mm) width. PCB footprints and land patterns are compatible without modification.

Q: Does the substitute part meet the same regulatory requirements?

A: Yes. Both parts maintain REACH Unaffected status and identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited).

Q: What is the supply voltage compatibility?

A: The 74AC151SC operates at 2V ~ 6V, while the CD74AC151M96 operates at 1.5V ~ 5.5V. The substitute part covers the primary operating range of the original part within the 2V ~ 5.5V overlap region.