SN74AS04D Equivalent & Substitute Parts

Part Overview

The SN74AS04D is a 6-channel inverter logic IC manufactured by Texas Instruments in a 14-SOIC surface mount package. This component is classified as Last Time Buy, indicating discontinued production with limited availability. The SN74AS04D performs basic logic inversion operations and is commonly used in digital circuit applications requiring signal level conversion.

Due to Last Time Buy status, identifying functionally equivalent substitute parts is essential for design continuity and long-term component sourcing. The primary substitute maintains identical electrical specifications and package configuration while offering Active product status and improved availability.

Substiute Parts

SN74AS04D

Texas InstrumentsIn Stock: 1843SN74AS04D Datasheet

Current PartRFQ

SN74AS04DR

Texas InstrumentsIn Stock: 2221SN74AS04DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74AS04D is determined by strict equivalence across the following critical parameters:

• Logic Type: Inverter (6-channel configuration)
• Number of Circuits and Inputs: 6 circuits, 1 input per circuit
• Electrical Specifications: Voltage supply range, output current ratings, input logic levels, and propagation delay
• Package Configuration: 14-SOIC surface mount package with identical physical dimensions
• Compliance Standards: RoHS3 compliance and MSL rating

The SN74AS04DR qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction is packaging format (Tape & Reel versus Tube) and product status (Active versus Last Time Buy).

Parameter Comparison

Engineering Selection Recommendations

The SN74AS04DR is the direct equivalent substitute for the SN74AS04D. Both parts are manufactured by Texas Instruments and maintain identical electrical performance and package specifications. The SN74AS04DR is recommended for new designs and ongoing production due to Active product status, ensuring long-term availability and supply chain continuity.

The SN74AS04D remains suitable for existing inventory and legacy applications where Last Time Buy components are acceptable. Both parts satisfy ROHS3 compliance requirements and carry MSL Level 1 rating, indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS04DR be used as a direct replacement for the SN74AS04D in existing designs?

A: Yes. The SN74AS04DR is electrically and mechanically equivalent to the SN74AS04D. All electrical parameters, including supply voltage, output current, input logic levels, and propagation delay, are identical. The 14-SOIC package dimensions are the same, enabling direct PCB footprint compatibility.

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

A: Tube packaging (SN74AS04D) is used for smaller quantities and manual handling. Tape & Reel packaging (SN74AS04DR) is designed for automated assembly processes and higher-volume production. Both formats contain the same component with identical specifications; the difference is in packaging and handling method.

Q: Why is the SN74AS04D marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part number. Existing inventory may be available, but no new manufacturing runs are planned. The SN74AS04DR (Active status) is the recommended alternative for future procurement.

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

A: No. Both the SN74AS04D and SN74AS04DR carry identical RoHS3 compliance and MSL Level 1 ratings. They meet the same environmental and regulatory standards.

Q: Can I mix SN74AS04D and SN74AS04DR components 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. However, using a single part number (SN74AS04DR) is recommended to simplify inventory management and supply chain logistics.