SN74HC151DG4 Equivalent & Substitute Parts

Part Overview

The SN74HC151DG4 is a 1 x 8:1 multiplexer logic IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing production and design requirements. The device functions as a data selector, routing one of eight input lines to a single output based on three address select lines.

Substiute Parts

SN74HC151DG4

Texas InstrumentsIn Stock: 983SN74HC151DG4 Datasheet

Current PartRFQ

SN74HC151DR

Texas InstrumentsIn Stock: 3998SN74HC151DR Datasheet

DirectRFQ

SN74HC151D

Texas InstrumentsIn Stock: 2128SN74HC151D Datasheet

MFR RecommendedRFQ

MC74HC151ADR2G

onsemiIn Stock: 6303MC74HC151ADR2G Datasheet

DirectRFQ

74HC151D,653

Nexperia USA Inc.In Stock: 3150874HC151D,653 Datasheet

MFR RecommendedRFQ

SN74HC151DE4

Texas InstrumentsIn Stock: 1029SN74HC151DE4 Datasheet

Parametric EquivalentRFQ

SN74HC251D

Texas InstrumentsIn Stock: 1043SN74HC251D Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74HC151DG4 is determined by the following critical parameters:

Circuit configuration (1 x 8:1 multiplexer function), package type (16-SOIC surface mount), voltage supply range (2V ~ 6V), and operating temperature range. Parts are grouped into three categories based on substitution relationship:

Direct Substitutes maintain identical electrical specifications and package format, differing only in packaging method (tape & reel, tube, or cut tape).

Manufacturer-Recommended Substitutes are functionally equivalent with identical circuit configuration and package, approved by the original manufacturer for direct replacement.

Parametric Equivalents share the same circuit function and package but may have different output current ratings or operating temperature ranges, requiring verification of application requirements.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring the SN74HC151DG4, the following selection criteria apply:

Primary Recommendation: SN74HC151DR is the preferred substitute. Manufactured by Texas Instruments with active product status, it maintains identical electrical specifications and 16-SOIC package format. Availability is confirmed at 3900 pieces in stock.

Secondary Recommendation: 74HC151D,653 from Nexperia USA Inc. is an active product with extended operating temperature range (-40°C ~ 125°C) and higher inventory (31489 pieces). Output current is reduced to 5.2mA, which is acceptable for most applications within the 2V ~ 6V supply range.

Alternative for Extended Temperature Range: MC74HC151ADR2G from onsemi provides the widest operating temperature range (-55°C ~ 125°C) with active product status and 6284 pieces available. Output current specification is 5.2mA. This option is suitable for applications requiring operation beyond standard industrial temperature limits.

Discontinued Alternatives: SN74HC151D, SN74HC151DE4, and SN74HC251D are discontinued at DiGi Electronics and should be avoided for new designs unless existing inventory is available and acceptable.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical package dimensions, ensuring mechanical and thermal compatibility.

Frequently Asked Questions (FAQ)

Q: Can SN74HC151DR be used as a direct replacement for SN74HC151DG4?

A: Yes. Both parts are manufactured by Texas Instruments with identical circuit configuration (1 x 8:1 multiplexer), package type (16-SOIC), voltage supply range (2V ~ 6V), output current ratings (7.8mA), and operating temperature range (-40°C ~ 85°C). The difference is packaging method; SN74HC151DR is supplied in cut tape and Digi-Reel format versus the original part's unspecified packaging.

Q: What is the difference between the onsemi MC74HC151ADR2G and Texas Instruments SN74HC151DR?

A: Both are 1 x 8:1 multiplexers in 16-SOIC packages with 2V ~ 6V supply voltage. The MC74HC151ADR2G has lower output current (5.2mA versus 7.8mA) and extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 85°C). The reduced output current is suitable for most logic applications; the extended temperature range is beneficial for industrial or automotive environments.

Q: Is the Nexperia 74HC151D,653 compatible with the original SN74HC151DG4?

A: Yes, with minor parameter differences. The Nexperia part maintains the same 1 x 8:1 circuit configuration, 16-SOIC package, and 2V ~ 6V supply voltage. Output current is 5.2mA (lower than the original 7.8mA), and operating temperature extends to 125°C (versus 85°C). These differences are acceptable for standard logic applications.

Q: Why do some substitute parts have different output current ratings?

A: Output current ratings reflect the maximum current the device can source or sink at its output pins. The onsemi and Nexperia parts specify 5.2mA, while Texas Instruments parts specify 7.8mA. Both ratings are sufficient for driving standard logic inputs and most applications. Selection depends on specific load requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, matching the original SN74HC151DG4 specifications.

Q: What is the difference between SN74HC151D and SN74HC251D?

A: Both are 1 x 8:1 multiplexers in 16-SOIC packages with identical electrical specifications. The base product numbers differ (74HC151 versus 74HC251), but they are functionally equivalent for this application. Both are discontinued at DiGi Electronics.