SN74LS164D Equivalent & Substitute Parts

Part Overview

The SN74LS164D is an 8-bit serial-to-parallel shift register manufactured by Texas Instruments, housed in a 14-SOIC surface mount package. This logic component converts serial input data into parallel output format, commonly used in data acquisition, display drivers, and digital control applications. The SN74LS164D is currently discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing production and maintenance applications. Active equivalent models remain available through standard distribution channels.

Substiute Parts

SN74LS164D

Texas InstrumentsIn Stock: 1577SN74LS164D Datasheet

Current PartRFQ

SN74LS164DR

Texas InstrumentsIn Stock: 2579SN74LS164DR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS164D is determined by strict equivalence across the following critical parameters:

• Logic function: Serial-to-parallel shift register operation
• Bit width: 8-bit configuration
• Output type: Push-pull topology
• Supply voltage range: 4.75V ~ 5.25V
• Operating temperature range: 0°C ~ 70°C
• Package specification: 14-SOIC form factor
• Electrical performance: Identical pin configuration and signal timing

The SN74LS164DR qualifies as a direct substitute based on complete alignment with these parameters. The primary distinction between the main part and substitute is packaging format: the SN74LS164D is supplied in tube packaging, while the SN74LS164DR is supplied in tape and reel format. Both parts share identical electrical specifications, pin assignments, and functional characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS164DR is the direct equivalent substitute for the SN74LS164D. Both parts are manufactured by Texas Instruments and maintain identical electrical and functional specifications. The SN74LS164DR holds active product status, ensuring continued availability through distribution channels, whereas the SN74LS164D is discontinued.

Selection between these parts depends on procurement and assembly requirements. The SN74LS164DR in tape and reel format is suitable for automated pick-and-place assembly operations and high-volume production environments. The tube packaging of the SN74LS164D is appropriate for manual assembly and lower-volume applications, though this variant is no longer actively produced.

Both parts satisfy ROHS3 compliance and REACH requirements. Moisture sensitivity level 1 indicates unlimited shelf life under standard storage conditions. The identical 14-SOIC package ensures direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS164DR be used as a direct replacement for the SN74LS164D?

A: Yes. The SN74LS164DR is a direct electrical and functional equivalent. Both parts share identical pin configurations, voltage specifications, operating temperature ranges, and shift register performance characteristics. The only difference is packaging format: tube versus tape and reel.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging contains individual components in a plastic tube, suitable for manual handling and lower-volume assembly. Tape and reel packaging presents components on a continuous carrier tape wound on a reel, designed for automated assembly equipment. Both formats contain the same electronic component with identical specifications.

Q: Are there any PCB layout considerations when substituting these parts?

A: No. Both the SN74LS164D and SN74LS164DR use the 14-SOIC package with identical pin assignments and dimensions. PCB layouts designed for either part are directly compatible with the other.

Q: What supply voltage range is required for operation?

A: Both parts operate within the 4.75V to 5.25V supply voltage range. This specification ensures compatibility with standard 5V logic systems.

Q: Are these parts suitable for high-temperature applications?

A: Both parts are rated for 0°C to 70°C operating temperature. Applications requiring extended temperature ranges require alternative components rated for those conditions.

Q: Do these parts require special storage or handling?

A: Both parts have moisture sensitivity level 1, indicating unlimited shelf life under standard storage conditions. No special moisture control measures are required.