SN74LS165AD Equivalent & Substitute Parts

Part Overview

The SN74LS165AD is an 8-bit parallel-load shift register manufactured by Texas Instruments, designed for applications requiring conversion between parallel and serial data formats. This component operates within the 74LS logic family and is housed in a 16-SOIC surface-mount package. The SN74LS165AD is currently discontinued at DiGi Electronics, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

SN74LS165AD

Texas InstrumentsIn Stock: 2226SN74LS165AD Datasheet

Current PartRFQ

SN74LS165ADR

Texas InstrumentsIn Stock: 20222SN74LS165ADR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS165AD is determined by strict equivalence across the following critical parameters:

• Logic type and function (8-bit shift register with parallel or serial to serial conversion capability)
• Output type (complementary outputs)
• Electrical specifications (4.75V ~ 5.25V supply voltage, 0°C ~ 70°C operating temperature range)
• Package and pinout (16-SOIC surface-mount configuration)
• Compliance certifications (ROHS3, REACH Unaffected, EAR99 classification)

The SN74LS165ADR qualifies as a direct substitute based on identical electrical characteristics, pinout, and functional performance. The primary distinction is packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS165ADR is the direct functional equivalent of the SN74LS165AD. Both components share identical electrical specifications, pinout configuration, and compliance certifications. The SN74LS165ADR maintains active product status with significantly higher inventory availability (20,200 units versus 2,200 units), ensuring supply chain continuity. Both variants are ROHS3 compliant and carry equivalent regulatory classifications. Selection between these parts should be based on packaging requirements: the SN74LS165ADR is supplied in Cut Tape and Digi-Reel formats, while the SN74LS165AD is supplied in Tube packaging. For new designs or production restocking, the SN74LS165ADR is the appropriate choice due to active manufacturer support and superior availability.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS165ADR be used as a direct replacement for the SN74LS165AD?

A: Yes. Both components are electrically and functionally identical. They share the same pinout, voltage specifications, operating temperature range, and package dimensions. The only differences are product status and packaging format.

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

A: Tube packaging supplies components in plastic tubes, typically used for lower-volume applications. Cut Tape and Digi-Reel packaging supplies components on continuous tape, suitable for automated assembly processes. Both formats contain the same component with identical electrical characteristics.

Q: Why is the SN74LS165AD discontinued?

A: The SN74LS165AD has been discontinued at DiGi Electronics. The SN74LS165ADR remains in active production and is the recommended source for ongoing supply.

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

A: No. Both the SN74LS165AD and SN74LS165ADR carry identical ROHS3 compliance, REACH Unaffected status, and EAR99 classification.

Q: What are the critical parameters for substitution?

A: Substitution is valid when the following parameters match: logic type (shift register), bit width (8-bit), function (parallel or serial to serial), output type (complementary), supply voltage (4.75V ~ 5.25V), operating temperature range (0°C ~ 70°C), and package type (16-SOIC surface mount).