SN74ALS05AD Equivalent & Substitute Parts

Part Overview

The SN74ALS05AD is a 6-channel inverter logic IC with open collector outputs in a 14-SOIC surface mount package, manufactured by Texas Instruments. This component is classified as Last Time Buy, indicating limited availability from the original manufacturer. Finding equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this inverter functionality.

Substiute Parts

SN74ALS05AD

Texas InstrumentsIn Stock: 2230SN74ALS05AD Datasheet

Current PartRFQ

SN74ALS05ADR

Texas InstrumentsIn Stock: 2298SN74ALS05ADR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS05AD is determined by strict equivalence across the following critical parameters:

• Logic Type: Inverter with 6 channels, 1 input per channel
• Output Configuration: Open Collector topology
• Electrical Specifications: Supply voltage 4.5V ~ 5.5V, output current 8mA, propagation delay 54ns @ 5V with 50pF load
• Input Logic Levels: Low threshold 0.8V, High threshold 2V
• Operating Temperature Range: 0°C ~ 70°C
• Package: 14-SOIC surface mount form factor
• Compliance: ROHS3 Compliant, Moisture Sensitivity Level 1

The SN74ALS05ADR qualifies as a direct substitute based on identical electrical and functional specifications. The difference lies in packaging format (Cut Tape & Digi-Reel versus Tube) and product status (Active versus Last Time Buy).

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS05ADR is a direct functional equivalent to the SN74ALS05AD. Selection between these parts should be based on the following factors:

• Product Status: The SN74ALS05ADR carries Active status from Texas Instruments, ensuring continued availability and long-term supply chain stability. The SN74ALS05AD is Last Time Buy, indicating limited future availability.
• Compliance: Both parts maintain identical ROHS3 compliance and Moisture Sensitivity Level 1 ratings, meeting regulatory and environmental requirements.
• Packaging Considerations: The SN74ALS05ADR is supplied in Cut Tape & Digi-Reel format, suitable for automated assembly and high-volume production. The SN74ALS05AD is supplied in Tube format, appropriate for manual handling and lower-volume applications.

For new designs or long-term production requirements, the SN74ALS05ADR is the preferred selection due to its Active product status and standard reel packaging format.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS05ADR be used as a direct replacement for the SN74ALS05AD in existing designs?

A: Yes. The SN74ALS05ADR is electrically and functionally identical to the SN74ALS05AD. All electrical parameters, logic specifications, and package dimensions are equivalent. No circuit modifications are required.

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

A: Tube packaging is used for manual component handling and lower-volume applications. Cut Tape & Digi-Reel packaging is designed for automated pick-and-place assembly equipment and high-volume production. Both formats contain the same component in the same 14-SOIC package.

Q: Why is the SN74ALS05AD marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued or is discontinuing production of this specific part number. Existing inventory may be available, but future availability is not guaranteed. The SN74ALS05ADR, with Active status, is the recommended alternative for ongoing supply.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts share identical electrical specifications: 4.5V ~ 5.5V supply voltage, 8mA output current, 54ns propagation delay at 5V with 50pF load, and identical input logic thresholds.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SN74ALS05AD and SN74ALS05ADR are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited), meeting identical regulatory and environmental requirements.