SN74LS04NS Equivalent & Substitute Parts

Part Overview

The SN74LS04NS is a 6-channel inverter logic IC manufactured by Texas Instruments in a 14-SO surface mount package. This component is classified as discontinued at DiGi Electronics, making substitute parts necessary for ongoing production and maintenance applications. The SN74LS04NS operates within the 74LS logic family and provides basic digital inversion functionality for TTL-compatible circuits.

Substiute Parts

SN74LS04NS

Texas InstrumentsIn Stock: 10318SN74LS04NS Datasheet

Current PartRFQ

SN74LS04NSR

Texas InstrumentsIn Stock: 3425SN74LS04NSR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74LS04NS is determined by strict equivalence across the following critical parameters:

• Logic Family & Function: Both parts must belong to the 74LS series and perform 6-channel inverter logic
• Electrical Specifications: Supply voltage range (4.75V ~ 5.25V), output current ratings (400µA, 8mA), and propagation delay (15ns @ 5V, 15pF) must be identical
• Package Compatibility: Both parts must use the 14-SOIC surface mount package with identical physical dimensions
• Compliance & Certification: RoHS3 compliance and MSL rating must match

The SN74LS04NSR qualifies as a direct substitute based on these parameters. The primary distinction is packaging format (Cut Tape & Digi-Reel versus Tube) and product status (Active versus Discontinued), with no electrical or mechanical differences.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS04NSR is the appropriate substitute for the discontinued SN74LS04NS. Both parts maintain identical electrical and mechanical specifications, ensuring direct functional equivalence in circuit applications. The SN74LS04NSR carries Active product status, providing supply chain continuity and availability advantages over the discontinued SN74LS04NS.

Both parts satisfy ROHS3 compliance and REACH unaffected status, meeting environmental and regulatory requirements. The packaging format difference (Tube versus Cut Tape & Digi-Reel) does not affect electrical performance and represents a logistics consideration only.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS04NSR replace the SN74LS04NS in existing designs?

A: Yes. The SN74LS04NSR is electrically and mechanically equivalent to the SN74LS04NS. All critical parameters including supply voltage, output current, propagation delay, and package dimensions are identical. Direct substitution is supported without circuit modification.

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

A: Tube packaging supplies components in plastic tubes for manual handling and small-quantity applications. Cut Tape & Digi-Reel packaging provides components on continuous tape for automated pick-and-place assembly. Both formats contain identical components; the difference is handling and assembly method only.

Q: Are there any compliance differences between these parts?

A: No. Both the SN74LS04NS and SN74LS04NSR are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings. Compliance status is equivalent.

Q: Why is the SN74LS04NS discontinued?

A: Product discontinuation is a supplier decision and does not reflect component performance or reliability. The SN74LS04NSR remains in active production and provides functional continuity for applications requiring 74LS inverter logic.

Q: Can I mix packaging formats in the same production run?

A: Yes. Since both parts are electrically and mechanically identical, they can be used interchangeably. However, assembly process compatibility with your pick-and-place equipment should be verified based on your specific packaging format requirements.