SN74LS08DRE4 Equivalent & Substitute Parts

Part Overview

The SN74LS08DRE4 is a 4-channel AND gate logic IC manufactured by Texas Instruments in the 74LS series. This component is a discontinued product at DiGi Electronics, with 989 pieces available in new original stock. The device integrates four independent 2-input AND gates in a 14-SOIC surface mount package. Due to its discontinued status, identifying equivalent and substitute parts is essential for design continuity and procurement planning.

Substiute Parts

SN74LS08DRE4

Texas InstrumentsIn Stock: 1064SN74LS08DRE4 Datasheet

Current PartRFQ

SN74LS08DR

Texas InstrumentsIn Stock: 17673SN74LS08DR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS08DRE4 is determined by strict equivalence across the following critical parameters:

• Logic function: 4-channel AND gate with 2 inputs per channel
• Electrical specifications: Supply voltage 4.75V ~ 5.25V, output current 400µA/8mA, input logic levels 0.8V/2V, propagation delay 20ns @ 5V with 15pF load
• Package format: 14-SOIC surface mount configuration
• Compliance: ROHS3 compliant, MSL Level 1

The SN74LS08DR qualifies as a parametric equivalent substitute. Both parts share identical electrical characteristics, logic configuration, and package specifications. The primary distinction is product status and packaging format availability.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS08DR is the direct substitute for the SN74LS08DRE4. Both components are manufactured by Texas Instruments and maintain identical electrical and functional specifications. The SN74LS08DR holds active product status with 17,650 pieces in stock, providing superior availability compared to the discontinued SN74LS08DRE4. Both parts carry ROHS3 compliance and MSL Level 1 certification, ensuring compatibility with current manufacturing and environmental standards. Selection between these parts should be based on procurement availability and supply chain requirements rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS08DR directly replace the SN74LS08DRE4 in existing designs?

A: Yes. Both parts are parametrically equivalent with identical logic function, electrical specifications, and 14-SOIC package format. No circuit modifications are required.

Q: What is the difference between SN74LS08DRE4 and SN74LS08DR?

A: The primary difference is product status. The SN74LS08DRE4 is discontinued at DiGi Electronics, while the SN74LS08DR maintains active status. Both share identical electrical characteristics and packaging.

Q: Are there packaging format differences between these parts?

A: The SN74LS08DRE4 is supplied in Digi-Reel format, while the SN74LS08DR is available in Cut Tape (CT) and Digi-Reel packaging options. Both use the same 14-SOIC physical package.

Q: Do both parts meet current compliance requirements?

A: Yes. Both the SN74LS08DRE4 and SN74LS08DR are ROHS3 compliant with MSL Level 1 rating, meeting current environmental and manufacturing standards.

Q: What are the critical parameters for AND gate substitution?

A: Logic function (4-channel, 2-input AND gate), supply voltage range (4.75V ~ 5.25V), output current specifications (400µA/8mA), input logic levels (0.8V/2V), propagation delay (20ns @ 5V, 15pF), and package format (14-SOIC) must remain constant for direct substitution.