SN74HC151DT Equivalent & Substitute Parts

Part Overview

The SN74HC151DT is a 1 x 8:1 multiplexer logic integrated circuit 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 design support and procurement. The SN74HC151DT operates as a data selector, routing one of eight input lines to a single output based on three address select lines. Functionally equivalent alternatives exist from multiple manufacturers with identical or enhanced electrical characteristics.

Substiute Parts

SN74HC151DT

Texas InstrumentsIn Stock: 7460SN74HC151DT Datasheet

Current PartRFQ

SN74HC151DR

Texas InstrumentsIn Stock: 3998SN74HC151DR Datasheet

Parametric EquivalentRFQ

SN74HC251DR

Texas InstrumentsIn Stock: 4915SN74HC251DR Datasheet

Parametric EquivalentRFQ

SN74HC251DT

Texas InstrumentsIn Stock: 1312SN74HC251DT Datasheet

Parametric EquivalentRFQ

MC74HC151ADR2G

onsemiIn Stock: 6303MC74HC151ADR2G Datasheet

DirectRFQ

74HC151D,653

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74HC151DT is determined by strict equivalence in the following parameters: circuit configuration (1 x 8:1 multiplexer), output current capability, supply voltage range (2V to 6V), package type (16-SOIC), and surface mount mounting type. All identified substitutes maintain these core electrical and mechanical specifications.

Substitutes are grouped into three categories based on manufacturer and product status:

Parametric Equivalents (Texas Instruments): SN74HC151DR and SN74HC251DR maintain identical electrical specifications to the main part. The SN74HC151DR differs only in packaging format (Cut Tape & Digi-Reel versus Tape & Reel). The SN74HC251DR uses an alternative base product number (74HC251 versus 74HC151) but maintains identical 1 x 8:1 circuit configuration and electrical performance.

Direct Manufacturer Alternative (onsemi): MC74HC151ADR2G provides functional equivalence with modified output current specifications (5.2mA versus 7.8mA) and an extended operating temperature range (-55°C to 125°C versus -40°C to 85°C).

Manufacturer Recommended Alternative (Nexperia USA Inc.): 74HC151D,653 offers functional equivalence with 5.2mA output current and extended operating temperature range (-40°C to 125°C). Package designation differs slightly (16-SO versus 16-SOIC) but maintains identical physical dimensions and pin compatibility.

Parameter Comparison

Engineering Selection Recommendations

For direct replacement of the SN74HC151DT with identical electrical performance and active product status, select SN74HC151DR. This part maintains the original 7.8mA output current specification and -40°C to 85°C operating temperature range while offering active availability from Texas Instruments.

For applications requiring extended operating temperature range or reduced output current specifications, MC74HC151ADR2G (onsemi) or 74HC151D,653 (Nexperia USA Inc.) are suitable alternatives. Both parts maintain the 1 x 8:1 multiplexer configuration, 2V to 6V supply voltage range, and 16-SOIC package compatibility. MC74HC151ADR2G extends the upper operating temperature to 125°C and lower temperature to -55°C. The 74HC151D,653 extends the upper operating temperature to 125°C while maintaining the -40°C lower limit.

All identified substitutes maintain ROHS3 compliance, Moisture Sensitivity Level 1, and identical package dimensions. Selection should prioritize active product status and availability requirements for your procurement timeline.

Frequently Asked Questions (FAQ)

Q: Can SN74HC151DR be used as a direct replacement for SN74HC151DT?

A: Yes. SN74HC151DR is a parametric equivalent with identical electrical specifications (7.8mA output current, 2V to 6V supply, -40°C to 85°C operating range) and 16-SOIC package. The only difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel). Both are surface mount compatible with identical pin configuration.

Q: What is the difference between SN74HC151DR and SN74HC251DR?

A: Both parts are parametric equivalents with identical electrical performance and 16-SOIC packaging. The difference is the base product number designation (74HC151 versus 74HC251). Both function as 1 x 8:1 multiplexers with 7.8mA output current and identical operating specifications. Selection between these parts depends on design documentation requirements and supplier availability.

Q: Why does MC74HC151ADR2G have lower output current (5.2mA versus 7.8mA)?

A: MC74HC151ADR2G is manufactured by onsemi and has different electrical specifications than the Texas Instruments SN74HC151DT. The reduced output current (5.2mA) is a characteristic of the onsemi device. This part is suitable for applications where the lower output current meets circuit requirements. The extended operating temperature range (-55°C to 125°C) provides additional thermal margin.

Q: Are all substitute parts in the same 16-SOIC package?

A: Yes. All identified substitutes use the 16-SOIC package with 0.154" width and 3.90mm physical dimensions. Pin configuration and PCB footprint compatibility are maintained across all parts. The 74HC151D,653 uses the designation "16-SO" but maintains identical physical dimensions and pin spacing.

Q: Which substitute part should I select for new designs?

A: For new designs, select from active product status parts: SN74HC151DR, SN74HC251DR, MC74HC151ADR2G, or 74HC151D,653. SN74HC151DR maintains the original Texas Instruments specifications. MC74HC151ADR2G and 74HC151D,653 offer extended operating temperature ranges suitable for harsh environment applications. All parts are ROHS3 compliant and MSL 1 rated.

Q: Can I use SN74HC251DT as a substitute for SN74HC151DT?

A: SN74HC251DT is a parametric equivalent with identical electrical specifications and 16-SOIC packaging. However, it is also discontinued at DiGi Electronics. For active availability, use SN74HC251DR instead, which maintains identical electrical performance with active product status.