SN74ALS151DRE4 Equivalent & Substitute Parts

Part Overview

The SN74ALS151DRE4 is a 1 x 8:1 multiplexer logic integrated circuit manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as discontinued at DiGi Electronics, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and component procurement. The part operates with single supply voltage between 4.5V and 5.5V and is suitable for applications requiring 8-to-1 data selection logic.

Substiute Parts

SN74ALS151DRE4

Texas InstrumentsIn Stock: 971SN74ALS151DRE4 Datasheet

Current PartRFQ

SN74ALS151DR

Texas InstrumentsIn Stock: 2752SN74ALS151DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS151DRE4 is determined by strict equivalence across the following critical parameters:

• Circuit Configuration: 1 x 8:1 multiplexer topology
• Package Type: 16-SOIC surface mount package with identical 0.154" (3.90mm) width
• Electrical Specifications: Single supply voltage range 4.5V ~ 5.5V, output current ratings 2.6mA (high) and 24mA (low)
• Operating Temperature Range: 0°C ~ 70°C
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The SN74ALS151DR qualifies as a direct substitute based on identical electrical performance, package specifications, and compliance certifications. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS151DR is the manufacturer-recommended substitute for the SN74ALS151DRE4. Both components share identical electrical specifications, package geometry, and compliance certifications. The SN74ALS151DR maintains active product status with established supply availability, whereas the SN74ALS151DRE4 is discontinued. Selection of the SN74ALS151DR is appropriate for new designs and component replenishment where the 16-SOIC package and specified electrical parameters are required. The transition from tube packaging (DRE4) to tape and reel packaging (DR) reflects standard industry distribution practices and does not affect component functionality or performance.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS151DR directly replace the SN74ALS151DRE4 in existing designs?

A: Yes. Both components are electrically identical 1 x 8:1 multiplexers in 16-SOIC packages with matching voltage supply ranges, output current specifications, and operating temperature ranges. Pin configuration and functional behavior are equivalent.

Q: What is the difference between the SN74ALS151DRE4 and SN74ALS151DR?

A: The primary differences are product status and packaging format. The SN74ALS151DRE4 is discontinued and supplied in tube packaging, while the SN74ALS151DR is an active product supplied in tape and reel format. Electrical performance and package dimensions are identical.

Q: Are there any compliance or certification differences between these parts?

A: No. Both components carry ROHS3 compliance, MSL Level 1 rating, and identical REACH and ECCN classifications. Compliance certifications are equivalent.

Q: Is the 16-SOIC package compatible with existing PCB layouts designed for the SN74ALS151DRE4?

A: Yes. The 16-SOIC package dimensions are identical (0.154" width, 3.90mm), and pin assignments are equivalent. PCB footprints and assembly processes require no modification.

Q: What inventory considerations apply when transitioning from SN74ALS151DRE4 to SN74ALS151DR?

A: The SN74ALS151DR has established supply availability as an active product. Tape and reel packaging is standard for automated assembly processes and offers cost advantages for volume production compared to tube packaging.