SN74ALS08DG4 Equivalent & Substitute Parts

Part Overview

The SN74ALS08DG4 is a 4-channel AND gate logic IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This part is classified as Last Time Buy, indicating limited future availability. The device operates within the 4.5V to 5.5V supply voltage range and is suitable for digital logic applications requiring AND gate functionality. Due to its Last Time Buy status, identifying equivalent substitute parts with identical electrical and mechanical specifications is essential for design continuity and procurement planning.

Substiute Parts

SN74ALS08DG4

Texas InstrumentsIn Stock: 1142SN74ALS08DG4 Datasheet

Current PartRFQ

SN74ALS08DR

Texas InstrumentsIn Stock: 4134SN74ALS08DR Datasheet

MFR RecommendedRFQ

SN74ALS08D

Texas InstrumentsIn Stock: 3873SN74ALS08D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74ALS08DG4 are qualified based on strict equivalence across the following critical parameters:

• Logic Type: AND Gate with 4 channels and 2 inputs per channel
• Voltage - Supply: 4.5V ~ 5.5V
• Current - Output High, Low: 400µA, 8mA
• Input Logic Level - Low: 0.8V
• Input Logic Level - High: 2V
• Max Propagation Delay @ V, Max CL: 14ns @ 5V, 50pF
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The identified substitutes differ only in packaging format (Cut Tape & Digi-Reel versus Tube) and product status, while maintaining complete electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SN74ALS08DG4, SN74ALS08DR, and SN74ALS08D—are electrically and mechanically identical and fully interchangeable in circuit applications. Selection should be based on the following factors:

SN74ALS08DR is the preferred substitute for new designs and long-term procurement. It carries Active product status, ensuring continued availability and support from Texas Instruments. The Cut Tape & Digi-Reel packaging format provides flexibility for both automated assembly and manual component handling. Current inventory of 4037 units supports sustained production requirements.

SN74ALS08D is an alternative substitute with Last Time Buy status, similar to the original SN74ALS08DG4. While electrically equivalent, this part shares the same end-of-life trajectory as the primary part. It is suitable for immediate replacement in existing designs but should not be selected for new long-term projects.

SN74ALS08DG4 retains Last Time Buy status with limited inventory (1058 units). Continued use of this specific part number is not recommended for new designs or future production runs.

Frequently Asked Questions (FAQ)

Q: Are SN74ALS08DR and SN74ALS08D direct pin-for-pin replacements for SN74ALS08DG4?

A: Yes. All three parts are pin-for-pin compatible with identical pinout, electrical characteristics, and 14-SOIC package dimensions. No circuit modifications are required for substitution.

Q: What is the difference between the Tube and Cut Tape & Digi-Reel packaging formats?

A: Tube packaging is used for manual component handling and smaller quantity orders. Cut Tape & Digi-Reel packaging is optimized for automated pick-and-place assembly equipment and high-volume production. Both formats contain the same die and offer identical electrical performance.

Q: Why is SN74ALS08DR recommended over SN74ALS08D?

A: SN74ALS08DR carries Active product status, indicating ongoing manufacturer support and availability. SN74ALS08D, like the original SN74ALS08DG4, is Last Time Buy, meaning production will cease and inventory will eventually deplete. For designs requiring long-term component availability, SN74ALS08DR is the appropriate choice.

Q: Can I mix parts from different packaging formats in the same production run?

A: Yes. Since all three parts are electrically and mechanically identical, they can be used interchangeably within the same assembly. However, for consistency in procurement and inventory management, selecting a single part number is recommended.

Q: Are all three parts RoHS3 compliant?

A: Yes. SN74ALS08DG4, SN74ALS08DR, and SN74ALS08D are all ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited), meeting environmental and regulatory requirements for commercial and industrial applications.