SN74ALS164AD Equivalent & Substitute Parts

Part Overview

The SN74ALS164AD is an 8-bit shift register logic IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This component functions as a serial-to-parallel converter with push-pull output configuration. The part is currently in Last Time Buy status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this specific logic function and electrical characteristics.

Substiute Parts

SN74ALS164AD

Texas InstrumentsIn Stock: 1152SN74ALS164AD Datasheet

Current PartRFQ

SN74ALS164ADR

Texas InstrumentsIn Stock: 3575SN74ALS164ADR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS164AD is determined by strict equivalence across the following critical parameters:

• Base product number (74ALS series identification)
• Logic function (8-bit serial-to-parallel shift register)
• Electrical specifications (4.5V ~ 5.5V supply, 0°C ~ 70°C operating range)
• Package type (14-SOIC surface mount)
• Output configuration (push-pull)
• Compliance certifications (ROHS3, REACH Unaffected)

The SN74ALS164ADR qualifies as a direct substitute based on identical electrical and functional parameters. The primary difference is packaging format: the main part is supplied in Tube packaging, while the substitute is supplied in Tape & Reel (TR) format. Both parts share the same 14-SOIC package footprint and are pin-compatible.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS164ADR is the recommended substitute for the SN74ALS164AD. Both parts are manufactured by Texas Instruments and maintain identical electrical specifications, functional characteristics, and package footprints. The substitute part carries Active product status, ensuring continued availability and supply chain stability compared to the Last Time Buy status of the main part.

Both parts meet ROHS3 compliance and REACH Unaffected requirements. The only distinction is the packaging format: Tube versus Tape & Reel. This difference does not affect electrical performance or PCB assembly compatibility. Selection between these parts should be based on procurement requirements and assembly process specifications.

Frequently Asked Questions (FAQ)

Q: Are the SN74ALS164AD and SN74ALS164ADR electrically identical?

A: Yes. Both parts share identical electrical specifications, including supply voltage range (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), logic function (8-bit serial-to-parallel shift register), and output type (push-pull). They are pin-compatible and functionally equivalent.

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

A: Tube packaging supplies individual components in a plastic tube, typically used for manual assembly or small-quantity applications. Tape & Reel packaging supplies components on a continuous reel, optimized for automated pick-and-place assembly. Both formats contain the same 14-SOIC package footprint and are compatible with standard PCB assembly processes.

Q: Can I use the SN74ALS164ADR as a direct replacement on my PCB?

A: Yes. The SN74ALS164ADR is a direct pin-for-pin replacement. No circuit modifications or PCB layout changes are required. The 14-SOIC package footprint is identical between both parts.

Q: Why is the SN74ALS164AD marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. The SN74ALS164ADR, which carries Active status, is the recommended alternative for continued supply and future designs.

Q: Are both parts RoHS compliant?

A: Yes. Both the SN74ALS164AD and SN74ALS164ADR are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.