SN74LS375NSR Equivalent & Substitute Parts

Part Overview

The SN74LS375NSR is a D-Type Transparent Latch IC with 4 independent channels, manufactured by Texas Instruments in the 74LS logic series. This component features differential output configuration and operates within the 4.75V to 5.25V supply voltage range. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs requiring this logic function.

Substiute Parts

SN74LS375NSR

Texas InstrumentsIn Stock: 3104SN74LS375NSR Datasheet

Current PartRFQ

SN74LS75NSR

Texas InstrumentsIn Stock: 3209SN74LS75NSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS375NSR is determined by the following critical parameters that must remain constant:

• Logic Type: D-Type Transparent Latch configuration
• Independent Circuits: 4 channels
• Output Type: Differential
• Supply Voltage Range: 4.75V ~ 5.25V
• Package / Case: 16-SOIC form factor
• Mounting Type: Surface Mount

The SN74LS75NSR qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary distinction is product status: SN74LS75NSR is active production, whereas SN74LS375NSR is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS75NSR is the direct equivalent for the obsolete SN74LS375NSR. Both components maintain identical electrical specifications, package geometry, and mounting characteristics. The SN74LS75NSR offers improved propagation delay performance (9ns versus 12ns), representing a performance enhancement with no functional compromise.

Selection of SN74LS75NSR is supported by:

• Active product status ensuring long-term availability and supply chain continuity
• Full compliance with ROHS3 and REACH regulatory requirements
• Identical supply voltage range and operating temperature specifications
• Matching output current characteristics and circuit configuration
• Identical 16-SOIC package footprint for direct PCB compatibility

Frequently Asked Questions (FAQ)

Q: Can SN74LS75NSR directly replace SN74LS375NSR in existing designs?

A: Yes. Both components share identical electrical parameters, supply voltage requirements, operating temperature range, and 16-SOIC package dimensions. Direct substitution is supported without circuit modification.

Q: What is the difference in propagation delay between these parts?

A: SN74LS75NSR operates at 9ns propagation delay compared to 12ns for SN74LS375NSR. This represents improved performance and does not create compatibility issues in systems designed for the original specification.

Q: Are there packaging differences between these parts?

A: No. Both components use identical 16-SOIC (0.209", 5.30mm Width) surface mount packaging. PCB footprints and assembly processes remain unchanged.

Q: Why is SN74LS375NSR classified as obsolete?

A: SN74LS375NSR has been discontinued by Texas Instruments. SN74LS75NSR serves as the active production equivalent and is the recommended selection for new designs and ongoing system support.

Q: Do compliance certifications differ between these parts?

A: No. Both components maintain identical ROHS3 compliance and REACH unaffected status, supporting equivalent regulatory requirements.