SN74ALS165D Equivalent & Substitute Parts

Part Overview

The SN74ALS165D is an 8-bit parallel-in/serial-out shift register manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This component functions to convert parallel data inputs into serial output format, making it essential for data serialization applications in digital logic circuits. The main part carries a Last Time Buy status, indicating discontinued production, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and procurement planning.

Substiute Parts

SN74ALS165D

Texas InstrumentsIn Stock: 2603SN74ALS165D Datasheet

Current PartRFQ

SN74ALS165DR

Texas InstrumentsIn Stock: 3093SN74ALS165DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS165D is determined by strict equivalence across the following critical parameters:

• Logic Type: Shift Register (8-bit configuration)
• Output Type: Complementary
• Function: Parallel or Serial to Serial conversion capability
• Voltage Supply Range: 4.5V ~ 5.5V
• Operating Temperature Range: 0°C ~ 70°C
• Package / Case: 16-SOIC form factor with identical pin configuration
• Mounting Type: Surface Mount

The SN74ALS165DR qualifies as a direct manufacturer-recommended substitute, maintaining identical electrical specifications, functional behavior, and physical packaging while differing only in packaging format (Cut Tape & Digi-Reel versus Tube).

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS165DR is the designated manufacturer-recommended substitute for the SN74ALS165D. Both components maintain identical electrical and functional specifications, with full compatibility in circuit applications. The primary distinction is product status: the SN74ALS165D is Last Time Buy, while the SN74ALS165DR carries Active status, ensuring continued availability and supply chain reliability.

Both parts satisfy ROHS3 compliance and REACH unaffected requirements, supporting regulatory conformance in manufacturing environments. The SN74ALS165DR's Active status and higher inventory availability (3040 Pcs versus 2508 Pcs) position it as the preferred selection for new designs and ongoing production requirements.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS165DR directly replace the SN74ALS165D in existing circuit designs?

A: Yes. The SN74ALS165DR is electrically and functionally identical to the SN74ALS165D. Both components share the same 16-SOIC package, pin configuration, voltage supply range (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), and shift register functionality. No circuit modifications are required.

Q: What is the difference between the SN74ALS165D and SN74ALS165DR?

A: The components are electrically equivalent. The difference lies in packaging format: the SN74ALS165D is supplied in Tube packaging, while the SN74ALS165DR is supplied in Cut Tape (CT) & Digi-Reel format. Product status also differs—SN74ALS165D is Last Time Buy, while SN74ALS165DR is Active.

Q: Why is the SN74ALS165D marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. The SN74ALS165DR remains in active production as the current equivalent offering.

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

A: No. Both the SN74ALS165D and SN74ALS165DR are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). Regulatory and environmental compliance is equivalent.

Q: Which part should be selected for new designs?

A: The SN74ALS165DR should be selected for new designs due to its Active product status and assured long-term availability. The SN74ALS165D should be used only for legacy system maintenance or existing inventory utilization.