SN74AS00D Equivalent & Substitute Parts

Part Overview

The SN74AS00D is a NAND Gate IC featuring 4 channels with 2 inputs per channel in a 14-SOIC surface mount package, manufactured by Texas Instruments. This component is classified as Last Time Buy, indicating discontinued production with limited availability. Finding equivalent substitute parts is necessary to ensure project continuity and secure long-term component supply for new designs or production runs.

Substiute Parts

SN74AS00D

Texas InstrumentsIn Stock: 1057SN74AS00D Datasheet

Current PartRFQ

SN74AS00DR

Texas InstrumentsIn Stock: 31689SN74AS00DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74AS00D is determined by strict equivalence across the following critical parameters:

• Logic function: NAND Gate with identical 4-channel, 2-input configuration
• Electrical specifications: Supply voltage range 4.5V ~ 5.5V, output current ratings 2mA/20mA, input logic levels 0.8V/2V, and propagation delay 4.5ns @ 5V, 50pF
• Package format: 14-SOIC surface mount package with 0.154" width (3.90mm)
• Operating temperature range: 0°C ~ 70°C
• Compliance certifications: ROHS3 Compliant, MSL Level 1

The primary distinction between the main part and its substitute relates to packaging configuration and product status, not functional or electrical performance.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS00DR is the direct functional equivalent to the SN74AS00D. Both parts are manufactured by Texas Instruments and share identical electrical and mechanical specifications. The SN74AS00DR is designated as Active product status, ensuring continued availability and supply chain reliability compared to the Last Time Buy status of the SN74AS00D.

The distinction between these parts is packaging configuration: the SN74AS00D is supplied in Tube packaging, while the SN74AS00DR is supplied in Tape & Reel (TR) format. Both maintain ROHS3 compliance and MSL Level 1 rating. Selection between these parts should be based on procurement requirements and assembly process compatibility with the available packaging format.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS00DR directly replace the SN74AS00D in existing designs?

A: Yes. Both parts are electrically and mechanically identical. They feature the same 14-SOIC package dimensions, supply voltage range, output current ratings, propagation delay, and operating temperature specifications. The only difference is packaging format (Tube versus Tape & Reel).

Q: What is the significance of the Last Time Buy status for the SN74AS00D?

A: Last Time Buy indicates that the SN74AS00D is no longer in active production. Existing inventory is limited, and once depleted, the part will not be restocked. The SN74AS00DR, with Active status, is the recommended alternative for new designs and ongoing production requirements.

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

A: No. Both the SN74AS00D and SN74AS00DR maintain identical ROHS3 compliance, MSL Level 1 rating, REACH Unaffected status, and ECCN/HTSUS classifications.

Q: How does packaging format affect component selection?

A: Packaging format (Tube versus Tape & Reel) impacts procurement, storage, and assembly processes. Tube packaging is suitable for manual assembly or small-volume applications, while Tape & Reel format is optimized for automated pick-and-place assembly in high-volume production environments. Electrical and mechanical performance remains identical regardless of packaging format.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching logic function (4-channel NAND gate with 2 inputs), supply voltage range (4.5V ~ 5.5V), output current specifications (2mA/20mA), input logic levels (0.8V/2V), propagation delay (4.5ns @ 5V, 50pF), operating temperature range (0°C ~ 70°C), and 14-SOIC package format. All these parameters must align for functional equivalence.