74HC151PW,112 Equivalent & Substitute Parts

Part Overview

The 74HC151PW,112 is a 1 x 8:1 multiplexer logic integrated circuit manufactured by Nexperia USA Inc. in a 16-TSSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74HC151 series multiplexer functions as a data selector, routing one of eight input lines to a single output based on three select lines, operating across a 2V to 6V supply range with a -40°C to 125°C temperature range.

Substiute Parts

74HC151PW,112

Nexperia USA Inc.In Stock: 117874HC151PW,112 Datasheet

Current PartRFQ

MC74HC151ADTR2G

onsemiIn Stock: 1938MC74HC151ADTR2G Datasheet

DirectRFQ

SN74HC151PW

Texas InstrumentsIn Stock: 1219SN74HC151PW Datasheet

SimilarRFQ

SN74HC151PWR

Texas InstrumentsIn Stock: 4140SN74HC151PWR Datasheet

SimilarRFQ

SN74HC151PWT

Texas InstrumentsIn Stock: 1182SN74HC151PWT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74HC151PW,112 is determined by the following critical parameters:

Electrical Compatibility: All substitute parts must maintain the 1 x 8:1 multiplexer circuit configuration, single supply voltage operation within 2V to 6V range, and compatible output current specifications.

Package Compatibility: All substitutes must use the 16-TSSOP surface mount package with identical 0.173" width (4.40mm) to ensure PCB footprint compatibility without layout modifications.

Functional Equivalence: All parts must belong to the 74HC151 base product series, ensuring pin-for-pin compatibility and identical logic function.

Compliance Requirements: All substitutes must maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status to meet regulatory and environmental standards.

Substitute parts are grouped into two categories: direct manufacturer equivalents (MC74HC151ADTR2G from onsemi) and similar Texas Instruments variants (SN74HC151PW, SN74HC151PWR, SN74HC151PWT).

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MC74HC151ADTR2G (onsemi) is the preferred direct substitute. This part maintains identical output current specifications (5.2mA) to the original 74HC151PW,112, offers an extended operating temperature range (-55°C to 125°C), and holds active product status with confirmed inventory availability. ROHS3 compliance and MSL Level 1 rating ensure regulatory alignment.

Secondary Recommendation: SN74HC151PWR (Texas Instruments) is suitable for applications where higher output current capability (7.8mA) is acceptable. This part maintains active product status and provides reliable long-term availability. The reduced upper operating temperature limit (-40°C to 85°C) must be evaluated against application requirements.

Alternative Options: SN74HC151PW and SN74HC151PWT from Texas Instruments are functionally equivalent but carry discontinued status at DiGi Electronics, limiting future procurement viability. These parts are suitable only for existing inventory management or short-term production runs.

All substitute parts maintain pin-for-pin compatibility, identical package footprint, and equivalent logic function, enabling direct replacement without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can MC74HC151ADTR2G directly replace 74HC151PW,112 without PCB modifications?

A: Yes. Both parts use the 16-TSSOP package with identical 0.173" width and pin configuration, enabling direct PCB footprint compatibility without layout changes.

Q: What is the difference between the output current ratings of 5.2mA and 7.8mA?

A: The 74HC151PW,112 and MC74HC151ADTR2G specify 5.2mA output current, while Texas Instruments variants (SN74HC151PW, SN74HC151PWR, SN74HC151PWT) specify 7.8mA. Both ratings are within standard 74HC logic specifications. Higher output current provides greater drive capability for downstream logic loads. Selection depends on circuit load requirements.

Q: Why does MC74HC151ADTR2G have a wider operating temperature range (-55°C to 125°C) compared to the original part (-40°C to 125°C)?

A: onsemi's specification extends the lower temperature limit to -55°C, providing broader environmental operating capability. This does not affect compatibility; applications requiring only -40°C to 125°C operation remain fully supported.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status, meeting current regulatory and environmental standards.

Q: What packaging options are available for substitute parts?

A: MC74HC151ADTR2G is supplied in Tape & Reel (TR) packaging. Texas Instruments variants are available in Tube (SN74HC151PW) or Cut Tape (CT) & Digi-Reel® (SN74HC151PWR, SN74HC151PWT) formats. Packaging selection depends on procurement volume and assembly requirements.

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

A: MC74HC151ADTR2G (onsemi) and SN74HC151PWR (Texas Instruments) both maintain active product status with confirmed inventory, ensuring reliable long-term procurement. SN74HC151PW and SN74HC151PWT are discontinued at DiGi Electronics and should not be selected for new designs requiring extended production support.