74HC151DB,118 Equivalent & Substitute Parts

Part Overview

The 74HC151DB,118 is a logic multiplexer IC manufactured by Nexperia USA Inc., configured as a 1 x 8:1 multiplexer in a 16-SSOP surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across a single supply voltage range of 2V to 6V with an operating temperature range of -40°C to 125°C, suitable for general-purpose digital logic applications requiring data selection functionality.

Substiute Parts

74HC151DB,118

Nexperia USA Inc.In Stock: 104074HC151DB,118 Datasheet

Current PartRFQ

74HC151PW,118

Nexperia USA Inc.In Stock: 1319674HC151PW,118 Datasheet

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SN74HC151PW

Texas InstrumentsIn Stock: 1219SN74HC151PW Datasheet

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SN74HC151PWR

Texas InstrumentsIn Stock: 4140SN74HC151PWR Datasheet

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SN74HC151PWT

Texas InstrumentsIn Stock: 1182SN74HC151PWT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HC151DB,118 is determined by the following critical parameters:

Functional Equivalence: All substitute parts maintain the 1 x 8:1 multiplexer circuit configuration and 74HC151 base product number, ensuring identical logic functionality.

Electrical Compatibility: All substitutes operate within the 2V to 6V supply voltage range. Output current specifications vary between manufacturers (5.2mA for Nexperia, 7.8mA for Texas Instruments), with higher current ratings providing enhanced drive capability while remaining functionally compatible.

Package Compatibility: Substitutes are available in two related surface mount packages: 16-TSSOP (0.173", 4.40mm Width) and 16-SSOP (0.209", 5.30mm Width). Package selection depends on PCB layout constraints and design requirements.

Temperature Range Considerations: The main part supports -40°C to 125°C operation. Texas Instruments substitutes operate within -40°C to 85°C, which is suitable for most commercial and industrial applications but may not cover extended temperature requirements.

Compliance and Status: All parts maintain ROHS3 compliance and REACH unaffected status. Product status varies from Active to Discontinued at DiGi Electronics, affecting long-term availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute - 74HC151PW,118 (Nexperia): This part is the direct functional equivalent from the same manufacturer. It maintains identical electrical specifications (5.2mA output current, -40°C to 125°C operating range) and ROHS3 compliance. The primary difference is the package format (16-TSSOP vs. 16-SSOP) and active product status, ensuring long-term availability. Selection of this part is appropriate when PCB layout can accommodate the narrower 16-TSSOP package.

Secondary Substitute - SN74HC151PWR (Texas Instruments): This part provides active product status with established supply chain availability. It maintains the 1 x 8:1 multiplexer function and 2V to 6V supply voltage compatibility. The higher output current specification (7.8mA) provides enhanced drive capability. The reduced operating temperature range (-40°C to 85°C) is suitable for standard commercial and industrial applications. This selection is appropriate when higher output current is beneficial and extended temperature operation beyond 85°C is not required.

Tertiary Options - SN74HC151PW and SN74HC151PWT (Texas Instruments): Both parts offer identical electrical specifications to SN74HC151PWR but are discontinued at DiGi Electronics. These parts may be considered only when existing inventory is available and long-term procurement is not a concern.

Frequently Asked Questions (FAQ)

Q: Can the 74HC151PW,118 directly replace the 74HC151DB,118 on the PCB?

A: Functional replacement is direct. Both parts implement the 1 x 8:1 multiplexer circuit with identical electrical specifications. The primary consideration is package footprint: 74HC151PW,118 uses 16-TSSOP (0.173", 4.40mm width) while 74HC151DB,118 uses 16-SSOP (0.209", 5.30mm width). PCB layout modification may be required if the original design does not accommodate the narrower TSSOP package.

Q: What is the difference between 16-SSOP and 16-TSSOP packages?

A: Both are 16-pin surface mount packages with identical pin counts and pitch. The primary difference is package width: SSOP is 0.209" (5.30mm) while TSSOP is 0.173" (4.40mm). TSSOP is a more compact variant. Pin assignments and electrical function remain identical between the two package types for the 74HC151 multiplexer.

Q: Are Texas Instruments SN74HC151 parts compatible with the Nexperia 74HC151DB,118?

A: Yes, all SN74HC151 variants maintain functional compatibility as 1 x 8:1 multiplexers with 2V to 6V supply voltage operation. The Texas Instruments parts feature higher output current (7.8mA vs. 5.2mA) and a reduced operating temperature range (-40°C to 85°C vs. -40°C to 125°C). Selection depends on whether the application requires the extended temperature range and whether the higher output current is beneficial or neutral for the design.

Q: Why is the 74HC151DB,118 marked as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Nexperia USA Inc. The 74HC151PW,118 from the same manufacturer serves as the active replacement, maintaining identical electrical specifications while offering improved long-term availability.

Q: What packaging options are available for 74HC151 multiplexers?

A: The substitute parts are available in three packaging formats: Tape & Reel (TR) for automated assembly, Cut Tape (CT) & Digi-Reel® for flexible quantities, and Tube for smaller volume requirements. Selection depends on procurement volume and assembly process requirements.