SN74LS04NSRG4 Equivalent & Substitute Parts

Part Overview

The SN74LS04NSRG4 is a 6-channel inverter logic IC manufactured by Texas Instruments in the 74LS series. This component features a single input per channel with 14-pin SOIC packaging and operates within a 4.75V to 5.25V supply voltage range. The part is currently classified as obsolete, which necessitates identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and new designs.

Substiute Parts

SN74LS04NSRG4

Texas InstrumentsIn Stock: 1002SN74LS04NSRG4 Datasheet

Current PartRFQ

SN74LS04DR

Texas InstrumentsIn Stock: 20122SN74LS04DR Datasheet

MFR RecommendedRFQ

SN74LS04NSR

Texas InstrumentsIn Stock: 3425SN74LS04NSR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74LS04NSRG4 are identified based on strict electrical and mechanical parameter matching within the 74LS inverter logic family. The substitution criteria are:

• Identical logic type (Inverter) and circuit configuration (6 channels, 1 input per channel)
• Matching electrical specifications: supply voltage range (4.75V ~ 5.25V), output current ratings (400µA high, 8mA low), input logic levels (0.8V low, 2V high), and propagation delay (15ns @ 5V, 15pF)
• Compatible surface mount packaging in 14-SOIC form factor
• Equivalent compliance certifications (ROHS3, MSL 1, REACH Unaffected, EAR99)
• Active product status to ensure ongoing availability

The two qualified substitutes—SN74LS04DR and SN74LS04NSR—meet all these criteria and differ only in packaging configuration and inventory availability, not in functional or electrical performance.

Parameter Comparison

Engineering Selection Recommendations

Both SN74LS04DR and SN74LS04NSR are qualified substitutes for the obsolete SN74LS04NSRG4 based on complete electrical and mechanical parameter equivalence. Selection between the two active alternatives depends on packaging and supply considerations:

SN74LS04DR is the manufacturer-recommended substitute, offering active product status with the highest inventory availability (20,100 pcs). This part features a narrower 14-SOIC package (0.154", 3.90mm width) compared to the original, which may require PCB layout verification for existing designs with tighter pitch requirements.

SN74LS04NSR provides parametric equivalence with identical package dimensions (0.209", 5.30mm width) to the original SN74LS04NSRG4, minimizing PCB redesign requirements. This part maintains active status with substantial inventory (3,400 pcs) and is suitable for direct replacement in existing layouts.

Both parts carry identical compliance certifications (ROHS3, MSL 1, REACH Unaffected, EAR99) and meet all electrical specifications without modification to circuit design or operation.

Frequently Asked Questions (FAQ)

Q: Can SN74LS04DR be used as a direct replacement for SN74LS04NSRG4?

A: SN74LS04DR is electrically and functionally equivalent with identical logic performance. However, the package width differs (0.154" vs 0.209"), requiring PCB layout verification before implementation in existing designs.

Q: What is the difference between SN74LS04DR and SN74LS04NSR?

A: Both parts are electrically identical with matching electrical specifications and compliance certifications. The primary difference is package width: SN74LS04DR uses a narrower 14-SOIC (0.154", 3.90mm), while SN74LS04NSR matches the original package dimensions (0.209", 5.30mm). Packaging format also differs—SN74LS04DR is supplied in Cut Tape and Digi-Reel, while SN74LS04NSR follows the same packaging convention.

Q: Why is the original SN74LS04NSRG4 marked as obsolete?

A: Product obsolescence reflects Texas Instruments' lifecycle management. Active substitutes SN74LS04DR and SN74LS04NSR provide continued access to equivalent 74LS inverter functionality with improved supply availability.

Q: Are there any electrical performance differences between the three parts?

A: No. All three parts share identical electrical specifications: 4.75V–5.25V supply voltage, 400µA/8mA output current, 0.8V/2V input logic levels, and 15ns propagation delay at 5V with 15pF load.

Q: Which substitute should I select for a new design?

A: SN74LS04DR is recommended for new designs due to active status and highest inventory availability. SN74LS04NSR is appropriate if existing PCB layouts require package dimension compatibility with the original part.

Q: Do these parts require different handling or storage procedures?

A: No. All three parts share identical moisture sensitivity level (MSL 1 – Unlimited), requiring no special storage or handling beyond standard ESD precautions for surface mount components.