SN74LS10D NAND Gate IC Equivalent & Substitute Parts

Part Overview

The SN74LS10D is a triple 3-input NAND gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The SN74LS10D remains in use for legacy system maintenance, repair, and field replacement applications where original specifications must be maintained. Identifying qualified substitute parts ensures design continuity and supply chain reliability for systems utilizing this logic gate configuration.

Substiute Parts

SN74LS10D

Texas InstrumentsIn Stock: 2552SN74LS10D Datasheet

Current PartRFQ

SN74LS10DR

Texas InstrumentsIn Stock: 22782SN74LS10DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LS10D is determined by strict equivalence across the following critical parameters:

• Logic Function: Identical NAND gate configuration with 3 channels and 3 inputs per channel
• Electrical Specifications: Matching supply voltage range (4.75V ~ 5.25V), input logic thresholds (Low: 0.8V, High: 2V), and propagation delay (15ns @ 5V, 15pF)
• Package Compatibility: Identical 14-SOIC surface mount package with matching physical dimensions (0.154", 3.90mm Width)
• Environmental Compliance: ROHS3 compliance and MSL Level 1 rating maintained
• Thermal Operating Range: 0°C ~ 70°C specification preserved

The SN74LS10DR qualifies as a direct substitute based on these parameters. The primary distinction is packaging format (Tape & Reel versus Tube) and product status (Active versus Last Time Buy), which do not affect functional or electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS10DR is the qualified substitute for the SN74LS10D based on complete electrical and functional equivalence. Both parts maintain identical logic specifications, electrical performance characteristics, and environmental compliance ratings. The SN74LS10DR carries Active product status, ensuring continued availability and supply chain support compared to the Last Time Buy status of the SN74LS10D. Both components satisfy ROHS3 compliance requirements and MSL Level 1 moisture sensitivity specifications. The packaging format difference (Tape & Reel versus Tube) reflects distribution method only and does not impact circuit performance or board-level integration.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS10DR replace the SN74LS10D in existing designs?

A: Yes. The SN74LS10DR is electrically and functionally equivalent to the SN74LS10D. Both parts feature identical logic gate configuration, supply voltage range, input/output specifications, propagation delay, and operating temperature range. The 14-SOIC package dimensions are identical, enabling direct PCB footprint compatibility.

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

A: Tube packaging (SN74LS10D) and Tape & Reel packaging (SN74LS10DR) represent different distribution and handling formats. Tube packaging is typically used for lower-volume orders and manual placement, while Tape & Reel is optimized for automated assembly processes. Both formats contain identical components with no functional differences.

Q: Why is the SN74LS10D marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. The SN74LS10DR, carrying Active status, represents the current production equivalent and is recommended for new designs and ongoing supply requirements.

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

A: No. Both the SN74LS10D and SN74LS10DR maintain identical ROHS3 compliance and MSL Level 1 moisture sensitivity ratings. Environmental and regulatory compliance specifications are equivalent.

Q: What are the critical parameters for substitution compatibility?

A: Substitution compatibility is determined by: logic function (triple 3-input NAND gate), supply voltage (4.75V ~ 5.25V), input logic thresholds (0.8V low, 2V high), propagation delay (15ns @ 5V, 15pF), operating temperature range (0°C ~ 70°C), and 14-SOIC package format. All these parameters are identical between the main part and substitute.