SN74LS30NE4 Equivalent & Substitute Parts

Part Overview

The SN74LS30NE4 is a NAND Gate IC manufactured by Texas Instruments, featuring 1 channel with 8 inputs in a 14-PDIP package. This logic component operates within the 74LS series and is designed for digital logic applications requiring NAND gate functionality. The part is currently in Active product status with 963 pieces available in new original inventory.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory depletion, or when alternative sourcing is required to maintain supply chain continuity. The SN74LS30N represents a parametrically equivalent alternative that maintains functional compatibility while offering different availability and compliance characteristics.

Substiute Parts

SN74LS30NE4

Texas InstrumentsIn Stock: 1063SN74LS30NE4 Datasheet

Current PartRFQ

SN74LS30N

onsemiIn Stock: 3784SN74LS30N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LS30NE4 is determined by strict alignment of the following critical parameters:

Functional Parameters:

• Logic Type: NAND Gate
• Number of Circuits: 1
• Number of Inputs: 8

Electrical Parameters:

• Voltage - Supply: 4.75V ~ 5.25V
• Input Logic Level - Low: 0.8V
• Input Logic Level - High: 2V
• Max Propagation Delay @ 5V, 15pF: 20ns

Physical Parameters:

• Package / Case: 14-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole

The SN74LS30N meets all functional, electrical, and physical requirements for direct substitution. Both parts operate identically within the specified parameter ranges and share the same 14-PDIP package footprint, enabling pin-compatible board-level replacement.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: SN74LS30NE4 (Texas Instruments)

The SN74LS30NE4 is the recommended primary choice for new designs and applications requiring active product status. This part carries Active product status, ensuring long-term availability and supply chain stability. It is ROHS3 compliant, meeting current environmental and regulatory requirements for commercial and industrial applications. Current inventory of 963 pieces supports immediate procurement needs.

Alternative Selection: SN74LS30N (onsemi)

The SN74LS30N serves as a parametric equivalent for applications where the primary part is unavailable. This part maintains functional and electrical compatibility across all critical parameters. However, the following conditions apply:

• Product Status: Obsolete. This part has reached end-of-life status, limiting long-term availability.
• RoHS Compliance: Non-compliant. Applications subject to RoHS regulations or customer requirements for environmental compliance cannot use this substitute.
• Quiescent Current: 500 µA versus 1.1 mA in the primary part. Lower quiescent current may provide marginal power consumption benefits in specific applications.

The SN74LS30N is suitable only for legacy system maintenance, repair operations, or applications with no regulatory compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS30N directly replace the SN74LS30NE4 on a PCB?

A: Yes, from a physical and functional standpoint. Both parts use the 14-DIP (0.300", 7.62mm) package with identical pin configurations and electrical characteristics. However, regulatory and compliance considerations must be evaluated before substitution. The SN74LS30N is RoHS non-compliant, which may violate design requirements or customer specifications.

Q: What is the difference in quiescent current between these parts?

A: The SN74LS30NE4 has a maximum quiescent current of 1.1 mA, while the SN74LS30N specifies 500 µA. This difference reflects manufacturing variations between Texas Instruments and onsemi. For most applications, this difference is negligible. In power-sensitive designs with multiple ICs, cumulative effects should be calculated.

Q: Why is the SN74LS30N marked as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and support for this part. New inventory may be available from distributors, but long-term supply cannot be guaranteed. For new designs, the Active status SN74LS30NE4 is the appropriate choice.

Q: Are there any timing or performance differences between these parts?

A: No. Both parts specify identical maximum propagation delay of 20ns at 5V with 15pF load. Input and output logic levels are identical. Functional performance is equivalent.

Q: Which part should be used for RoHS-compliant applications?

A: The SN74LS30NE4 is ROHS3 compliant and must be used for applications subject to RoHS regulations or customer requirements. The SN74LS30N is not RoHS compliant and cannot be used in these applications.

Q: Is the SN74LS30N still available for purchase?

A: The provided data indicates 3750 pieces in new original inventory. However, as an obsolete part, availability is limited to existing distributor stock. Once depleted, sourcing becomes difficult or impossible. The SN74LS30NE4 with 963 pieces in stock offers more reliable long-term availability.