SN74ALS30AD NAND Gate IC Equivalent & Substitute Parts

Part Overview

The SN74ALS30AD 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 limited availability from the original packaging configuration. The SN74ALS30AD operates within the 74ALS logic family and is designed for applications requiring high-speed NAND logic operations. Identifying equivalent substitute parts is necessary due to product status constraints and to ensure design continuity and procurement flexibility.

Substiute Parts

SN74ALS30AD

Texas InstrumentsIn Stock: 1477SN74ALS30AD Datasheet

Current PartRFQ

SN74ALS30ADR

Texas InstrumentsIn Stock: 3069SN74ALS30ADR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74ALS30AD are determined by strict equivalence across the following critical parameters:

• Logic Type: NAND Gate
• Number of Circuits: 1
• Number of Inputs: 8
• Voltage - Supply: 4.5V ~ 5.5V
• Current - Output High, Low: 400µA, 8mA
• Input Logic Level - Low: 0.8V
• Input Logic Level - High: 2V
• Max Propagation Delay @ V, Max CL: 12ns @ 5V, 50pF
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• RoHS Status: ROHS3 Compliant

The primary distinction between the main part and its substitute is the packaging format: the SN74ALS30AD is supplied in Tube packaging, while the SN74ALS30ADR is supplied in Tape & Reel (TR) format. Both parts share identical electrical specifications, functional characteristics, and compliance certifications. The substitution is valid for applications where packaging format does not impose constraints on assembly or procurement workflows.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS30ADR is the direct substitute for the SN74ALS30AD. Both parts are manufactured by Texas Instruments and maintain identical electrical and functional specifications. The SN74ALS30ADR carries Active product status, providing superior long-term availability compared to the Last Time Buy status of the SN74ALS30AD. Both parts meet ROHS3 compliance and REACH requirements, ensuring regulatory alignment for current and future applications.

The selection between these parts should be based on packaging requirements and procurement strategy. The SN74ALS30ADR in Tape & Reel format is suitable for high-volume automated assembly processes, while the SN74ALS30AD in Tube format may be appropriate for lower-volume or manual assembly scenarios. From a supply chain perspective, the SN74ALS30ADR is recommended due to its Active status and higher inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS30ADR directly replace the SN74ALS30AD in my circuit?

A: Yes. Both parts are electrically and functionally identical. They share the same logic type, input/output specifications, propagation delay, operating temperature range, and package dimensions. The only difference is the packaging format (Tube versus Tape & Reel).

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

A: Tube packaging is typically used for lower-volume orders and manual assembly processes. Tape & Reel (TR) packaging is designed for automated pick-and-place assembly equipment and high-volume production. The components themselves are identical; only the delivery format differs.

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

A: No. Both the SN74ALS30AD and SN74ALS30ADR are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). They meet the same regulatory and environmental standards.

Q: Why is the SN74ALS30AD marked as Last Time Buy?

A: Last Time Buy status indicates that the manufacturer has discontinued or is phasing out this specific packaging configuration. The SN74ALS30ADR in Tape & Reel format remains in Active production, making it the recommended choice for new designs and ongoing procurement.

Q: Will substituting the SN74ALS30ADR affect my PCB assembly process?

A: If your assembly process uses automated equipment, the Tape & Reel format of the SN74ALS30ADR is actually preferred. If your process requires Tube packaging, you would need to confirm that your assembly partner can accommodate Tape & Reel format or request special packaging arrangements from the supplier.

Q: Are the pin configurations identical between these parts?

A: Yes. Both parts use the 14-SOIC package with identical pin assignments and dimensions (0.154", 3.90mm Width). No PCB layout modifications are required for substitution.