SN74ALS09D Equivalent & Substitute Parts

Part Overview

The SN74ALS09D is a 4-channel AND gate logic IC with open collector output, manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited availability. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this logic function.

Substiute Parts

SN74ALS09D

Texas InstrumentsIn Stock: 2007SN74ALS09D Datasheet

Current PartRFQ

SN74ALS09DR

Texas InstrumentsIn Stock: 4522SN74ALS09DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS09D is determined by the following critical parameters:

• Logic Function: 4-channel AND gate with 2 inputs per channel
• Output Configuration: Open collector topology
• Electrical Specifications: Supply voltage 4.5V ~ 5.5V, output current 8mA, propagation delay 54ns @ 5V
• Package Format: 14-SOIC surface mount package with 0.154" width
• Compliance: ROHS3 compliant, MSL Level 1

The SN74ALS09DR qualifies as a direct substitute based on identical electrical characteristics, logic configuration, and package specifications. The primary distinction is product status and packaging format (Cut Tape & Digi-Reel vs. Tube).

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS09DR is the manufacturer-recommended substitute for the SN74ALS09D. Both parts are manufactured by Texas Instruments and share identical electrical and functional specifications. The SN74ALS09DR maintains Active product status, ensuring continued availability and supply chain support compared to the Last Time Buy status of the SN74ALS09D.

Both parts meet ROHS3 compliance and carry MSL Level 1 rating, confirming equivalent environmental and handling requirements. The 14-SOIC package format is identical, allowing direct PCB layout compatibility without design modification.

Selection between these parts should be based on procurement requirements: the SN74ALS09D in Tube packaging for existing inventory management, or the SN74ALS09DR in Cut Tape & Digi-Reel format for ongoing production and new designs.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS09DR replace the SN74ALS09D in existing designs?

A: Yes. The SN74ALS09DR is electrically and functionally identical to the SN74ALS09D. Both parts feature the same 4-channel AND gate logic, open collector output, supply voltage range, output current rating, and propagation delay specifications. The 14-SOIC package dimensions are identical, requiring no PCB layout changes.

Q: What is the difference between the SN74ALS09D and SN74ALS09DR?

A: The primary differences are product status and packaging format. The SN74ALS09D is Last Time Buy with Tube packaging, while the SN74ALS09DR is Active with Cut Tape & Digi-Reel packaging. All electrical specifications, logic function, and compliance certifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, carry MSL Level 1 rating, and share identical REACH and ECCN classifications. Environmental and handling requirements are equivalent.

Q: Does the packaging format affect circuit performance?

A: No. Packaging format (Tube vs. Cut Tape & Digi-Reel) affects only procurement and handling logistics, not electrical performance or functional characteristics. The die and package case specifications are identical.

Q: Which part should be selected for new designs?

A: The SN74ALS09DR is recommended for new designs due to its Active product status, ensuring long-term availability and supply chain continuity. The SN74ALS09D should be reserved for existing inventory management or legacy system support.