SN74LS595D Equivalent & Substitute Parts

Part Overview

The SN74LS595D is an 8-bit serial-in, parallel-out shift register with output latches, manufactured by Texas Instruments in a 16-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The identification of equivalent and substitute parts is necessary to ensure design continuity and procurement flexibility for applications requiring this logic function.

Substiute Parts

SN74LS595D

Texas InstrumentsIn Stock: 7316SN74LS595D Datasheet

Current PartRFQ

SN74LS595DR

Texas InstrumentsIn Stock: 12429SN74LS595DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS595D is determined by strict equivalence across the following critical parameters:

• Logic function: 8-bit shift register with serial-to-parallel conversion
• Output configuration: Tri-state output type
• Electrical specifications: 4.75V to 5.25V supply voltage range
• Temperature rating: 0°C to 70°C operating range
• Package format: 16-SOIC surface mount package with 0.154" (3.90mm) width
• Compliance certifications: ROHS3 compliance and MSL Level 1 rating

The SN74LS595DR qualifies as a direct substitute based on identical electrical characteristics, functional specifications, and package geometry. The difference between these parts is limited to packaging format (tube versus cut tape/digi-reel), which does not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS595DR is the qualified substitute for the SN74LS595D. Both parts maintain identical electrical and mechanical specifications, ensuring direct compatibility in circuit applications. The SN74LS595DR carries Active product status, providing superior long-term availability compared to the Last Time Buy status of the SN74LS595D. Both parts satisfy ROHS3 compliance and MSL Level 1 requirements for standard manufacturing environments. Selection between these parts should be based on procurement availability and packaging format requirements (tube versus cut tape/digi-reel).

Frequently Asked Questions (FAQ)

Q: Can the SN74LS595DR replace the SN74LS595D in existing designs?

A: Yes. The SN74LS595DR is electrically and mechanically equivalent to the SN74LS595D. Both parts feature identical supply voltage ranges (4.75V to 5.25V), operating temperature ratings (0°C to 70°C), and 16-SOIC package geometry. No circuit modifications are required.

Q: What is the difference between SN74LS595D and SN74LS595DR?

A: The primary difference is packaging format. The SN74LS595D is supplied in tube packaging, while the SN74LS595DR is supplied in cut tape and digi-reel formats. Electrical and functional specifications are identical.

Q: Why is the SN74LS595D marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. The SN74LS595DR, with Active status, represents the current production equivalent and is recommended for new designs and long-term procurement.

Q: Are there any compliance differences between these parts?

A: No. Both the SN74LS595D and SN74LS595DR are ROHS3 compliant with MSL Level 1 rating. REACH status is unaffected for both parts.

Q: Can these parts be used interchangeably on the same PCB assembly line?

A: Yes, provided the assembly equipment can accommodate the respective packaging formats. The 16-SOIC package dimensions are identical for both parts, allowing use of the same PCB footprint and reflow profile.