SN74HC151DRG4 Equivalent & Substitute Parts

Part Overview

The SN74HC151DRG4 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 design support and procurement. The device functions as a data selector, routing one of eight input lines to a single output based on three address select lines. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts may differ in manufacturer, packaging format, or minor performance characteristics while remaining functionally compatible within the 74HC logic family.

Substiute Parts

SN74HC151DRG4

Texas InstrumentsIn Stock: 999SN74HC151DRG4 Datasheet

Current PartRFQ

SN74HC151DR

Texas InstrumentsIn Stock: 3998SN74HC151DR Datasheet

Parametric EquivalentRFQ

SN74HC151DT

Texas InstrumentsIn Stock: 7460SN74HC151DT 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 eligibility for the SN74HC151DRG4 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)
• Operating temperature range (-40°C ~ 85°C minimum)
• RoHS3 compliance
• Moisture sensitivity level (MSL 1)

Substitute parts are grouped into three categories:

Parametric Equivalents (Texas Instruments 74HC151 series): SN74HC151DR and SN74HC151DT maintain identical electrical specifications and 16-SOIC packaging. These differ only in packaging format (Cut Tape vs. Tape & Reel) and product status.

Cross-Series Equivalents (Texas Instruments 74HC251 series): SN74HC251DR and SN74HC251DT are functionally equivalent 1 x 8:1 multiplexers with identical electrical parameters and 16-SOIC packaging, differing only in base product number and packaging format.

Alternative Manufacturer Parts: MC74HC151ADR2G (onsemi) and 74HC151D,653 (Nexperia) provide functional equivalence with the same 1 x 8:1 multiplexer configuration and 16-SOIC package. Minor variations exist in output current specifications and operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74HC151DR is the direct equivalent replacement. It maintains identical electrical specifications (7.8mA output current, -40°C ~ 85°C operating range) and 16-SOIC packaging as the original SN74HC151DRG4. This part is currently active and available in high volume (3900 Pcs), making it the preferred choice for new procurement and design continuity.

Secondary Recommendation: SN74HC251DR provides functional equivalence with identical electrical performance and packaging. As an active product with substantial inventory (4820 Pcs), it serves as an alternative when SN74HC151DR availability is constrained.

Alternative Manufacturer Options: MC74HC151ADR2G (onsemi) and 74HC151D,653 (Nexperia) are functionally compatible alternatives. Both are active products with robust inventory levels. The Nexperia part (74HC151D,653) offers the highest inventory availability (31489 Pcs) and extended operating temperature range (-40°C ~ 125°C). The onsemi part (MC74HC151ADR2G) provides an extended upper operating temperature limit (-55°C ~ 125°C). Both parts feature reduced output current specifications (5.2mA vs. 7.8mA), which is acceptable for most 74HC logic applications but should be verified against specific circuit load requirements.

All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and 16-SOIC surface mount packaging, ensuring compatibility with existing PCB designs and manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can I use SN74HC251DR as a direct replacement for SN74HC151DRG4?

A: Yes. Both parts are 1 x 8:1 multiplexers in 16-SOIC packages with identical voltage supply (2V ~ 6V), output current (7.8mA), and operating temperature range (-40°C ~ 85°C). The base product number differs (74HC251 vs. 74HC151), but functional compatibility is maintained within the 74HC logic family.

Q: What is the difference between SN74HC151DR and SN74HC151DT?

A: Both are identical SN74HC151 multiplexers in 16-SOIC packages with the same electrical specifications. The difference is packaging format: DR indicates Cut Tape (CT) & Digi-Reel format, while DT indicates Tape & Reel (TR) format. Selection depends on assembly equipment and procurement requirements.

Q: Can I substitute the onsemi MC74HC151ADR2G for the original part?

A: Yes, with consideration of output current specifications. The MC74HC151ADR2G is a functionally equivalent 1 x 8:1 multiplexer in 16-SOIC packaging with the same voltage supply range. However, output current is reduced to 5.2mA compared to 7.8mA in the original part. Verify that your circuit load requirements are compatible with the lower output current specification before substitution.

Q: Why does the Nexperia 74HC151D,653 have higher inventory than other options?

A: The Nexperia part (74HC151D,653) is an active product with established supply chain distribution. High inventory (31489 Pcs) reflects its status as a standard catalog item. It provides functional equivalence with extended operating temperature range (-40°C ~ 125°C) and is suitable for applications requiring long-term availability and supply security.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 moisture sensitivity rating, ensuring compatibility with modern manufacturing standards and environmental regulations.

Q: What should I consider when selecting between Texas Instruments and alternative manufacturer parts?

A: Selection should be based on product status (active vs. discontinued), inventory availability, and specific circuit requirements. Texas Instruments SN74HC151DR and SN74HC251DR are active products with identical specifications to the original part. Alternative manufacturers (onsemi, Nexperia) provide functionally equivalent options with potentially better long-term availability. Output current differences (5.2mA vs. 7.8mA) should be evaluated against circuit load requirements.