SN74LS30D NAND Gate IC Equivalent & Substitute Parts

Part Overview

The SN74LS30D is a NAND Gate IC manufactured by Texas Instruments, featuring 1 channel with 8 inputs in a 14-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited remaining inventory. Finding equivalent substitute parts is necessary to ensure design continuity and long-term component availability for new production runs and system maintenance.

Substiute Parts

SN74LS30D

Texas InstrumentsIn Stock: 1152SN74LS30D Datasheet

Current PartRFQ

SN74LS30DR

Texas InstrumentsIn Stock: 12596SN74LS30DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS30D is determined by strict equivalence across the following critical parameters:

• Logic function: NAND Gate with identical 1 channel, 8-input configuration
• Electrical specifications: Voltage supply range (4.75V ~ 5.25V), quiescent current (500 µA max), output current ratings (400µA, 8mA), input logic levels (0.8V low, 2V high), and propagation delay (20ns @ 5V, 15pF)
• Package type: 14-SOIC surface mount package with identical physical dimensions (0.154", 3.90mm width)
• Compliance standards: ROHS3 compliance and MSL Level 1 rating
• Series compatibility: 74LS logic family

The SN74LS30DR meets all these criteria and is classified as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS30DR is the direct equivalent substitute for the SN74LS30D. Both components are manufactured by Texas Instruments and maintain identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status: the SN74LS30D is Last Time Buy with limited inventory (1103 pcs), while the SN74LS30DR is Active with significantly higher availability (12540 pcs).

For new designs and production continuity, the SN74LS30DR is the appropriate selection. Both parts carry ROHS3 compliance and MSL Level 1 rating, ensuring regulatory and environmental compatibility. The packaging difference (Tube versus Cut Tape & Digi-Reel) does not affect functional or electrical performance and is determined by procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS30DR be used as a direct replacement for the SN74LS30D?

A: Yes. The SN74LS30DR is electrically and mechanically identical to the SN74LS30D. All electrical parameters, logic function, package dimensions, and compliance certifications are equivalent. The only difference is product status and packaging format.

Q: What is the difference between Tube and Cut Tape & Digi-Reel packaging?

A: Tube and Cut Tape & Digi-Reel are packaging and delivery formats that do not affect component performance. Tube packaging is typically used for lower-volume orders, while Cut Tape & Digi-Reel is standard for higher-volume production. Selection depends on assembly line requirements and order quantity.

Q: Why is the SN74LS30D marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. Existing inventory is available for a limited time. The SN74LS30DR is the active replacement and should be used for new designs and future production.

Q: Are there any differences in compliance or certifications between these parts?

A: No. Both the SN74LS30D and SN74LS30DR are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 rating. They meet identical regulatory and environmental standards.

Q: Can I mix SN74LS30D and SN74LS30DR in the same production batch?

A: Yes. Since both parts are electrically and mechanically identical, they can be used interchangeably in the same circuit design and production environment without functional impact.