SN74LS11D Equivalent & Substitute Parts

Part Overview

The SN74LS11D is a 3-channel AND gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This component implements three independent 3-input AND gates in a single package, commonly used in digital logic circuits for signal gating and control applications. The SN74LS11D is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for ongoing production and maintenance applications.

Substiute Parts

SN74LS11D

Texas InstrumentsIn Stock: 1360SN74LS11D Datasheet

Current PartRFQ

SN74LS11DR

Texas InstrumentsIn Stock: 11182SN74LS11DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS11D is based on functional and electrical equivalence within the 74LS logic family. The primary substitution criterion is the maintenance of identical electrical characteristics: 3-channel AND gate configuration with 3 inputs per channel, 14-SOIC package compatibility, and matching voltage supply range (4.75V ~ 5.25V). The substitute part must operate within the same temperature range (0°C ~ 70°C) and maintain equivalent propagation delay specifications (20ns @ 5V, 15pF). Packaging format differences (Tube versus Tape & Reel) do not affect functional substitution but reflect supply chain and inventory management variations. Both parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring environmental and moisture handling compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS11DR is the direct functional equivalent and recommended substitute for the SN74LS11D. Both parts are manufactured by Texas Instruments and share identical electrical specifications, logic configuration, and package geometry. The primary distinction is product status: the SN74LS11D is in Last Time Buy phase, while the SN74LS11DR maintains Active status with significantly higher inventory availability (11,160 pieces versus 1,348 pieces). Both parts maintain full ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with current manufacturing and environmental standards. The packaging format difference (Tube versus Tape & Reel) reflects supply chain logistics and does not affect functional performance or pin compatibility. Selection of the SN74LS11DR ensures long-term supply chain continuity and access to active production inventory.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS11DR directly replace the SN74LS11D in existing designs?

A: Yes. The SN74LS11DR is a direct functional equivalent with identical pin configuration, electrical characteristics, and 14-SOIC package dimensions. No circuit modifications are required.

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

A: Tube packaging is used for manual handling and smaller quantity orders, while Tape & Reel (TR) packaging is optimized for automated assembly processes and higher volume production. Both formats contain the same component with identical electrical performance.

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

A: No. Both the SN74LS11D and SN74LS11DR maintain identical ROHS3 compliance, REACH unaffected status, and MSL Level 1 moisture sensitivity rating.

Q: Why is the SN74LS11D in Last Time Buy status?

A: Last Time Buy status indicates that Texas Instruments has discontinued active production of this part number. The SN74LS11DR remains in active production and is the recommended long-term alternative.

Q: Are the electrical specifications identical between both parts?

A: Yes. Both parts share identical voltage supply range (4.75V ~ 5.25V), propagation delay (20ns @ 5V, 15pF), quiescent current (3.6 mA max), output current ratings (400µA, 8mA), and operating temperature range (0°C ~ 70°C).

Q: Can I mix SN74LS11D and SN74LS11DR components in the same production batch?

A: Yes. Since both parts are functionally and electrically equivalent with identical package geometry, they can be used interchangeably in the same circuit design and production environment.