SN74ALS04BD Equivalent & Substitute Parts

Part Overview

The SN74ALS04BD is a 6-channel inverter 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 SN74ALS04BD performs basic logic inversion operations across six independent channels, making it essential for digital signal conditioning and logic level conversion in TTL-compatible systems. Due to its Last Time Buy status, identifying functionally equivalent substitute parts is necessary for design continuity and long-term supply chain planning.

Substiute Parts

SN74ALS04BD

Texas InstrumentsIn Stock: 2127SN74ALS04BD Datasheet

Current PartRFQ

SN74ALS04BDR

Texas InstrumentsIn Stock: 2247SN74ALS04BDR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74ALS04BD is determined by strict equivalence across the following critical parameters:

• Logic Function: Inverter with 6 channels, 1 input per channel
• Electrical Specifications: Supply voltage 4.5V ~ 5.5V, output current 400µA (high) and 8mA (low), input logic levels 0.8V (low) and 2V (high), propagation delay 11ns @ 5V with 50pF load
• Operating Temperature Range: 0°C ~ 70°C
• Package Format: 14-SOIC surface mount package with 0.154" (3.90mm) width
• Compliance Standards: ROHS3 compliant, REACH unaffected

The SN74ALS04BDR qualifies as a direct substitute based on identical electrical performance, package specifications, and compliance certifications. The primary distinction is packaging format (Cut Tape versus Tube) and product status (Active versus Last Time Buy).

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS04BDR is the direct substitute for the SN74ALS04BD. Both parts are manufactured by Texas Instruments and share identical electrical specifications, logic function, and package dimensions. The SN74ALS04BDR maintains Active product status, ensuring continued availability and supply chain stability compared to the Last Time Buy status of the SN74ALS04BD.

Both parts meet ROHS3 compliance requirements and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, making them suitable for standard manufacturing and storage conditions. The only functional difference is packaging format: the SN74ALS04BD is supplied in Tube packaging, while the SN74ALS04BDR is supplied in Cut Tape format. This distinction affects order quantities and handling procedures but does not impact electrical performance or circuit compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS04BDR replace the SN74ALS04BD in existing designs?

A: Yes. The SN74ALS04BDR is electrically and functionally identical to the SN74ALS04BD. Both parts operate at the same supply voltage (4.5V ~ 5.5V), produce identical output currents, and exhibit the same propagation delay characteristics. The 14-SOIC package dimensions are identical, allowing direct PCB footprint compatibility.

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

A: Tube packaging supplies components in plastic tubes for manual handling and smaller order quantities. Cut Tape packaging supplies components on continuous tape for automated pick-and-place assembly equipment. Both formats contain the same component with identical electrical specifications. Selection depends on manufacturing process requirements and order volume.

Q: Why is the SN74ALS04BD 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 from distributors, but no new production runs are planned. The SN74ALS04BDR, with Active status, represents the recommended path for new designs and long-term supply continuity.

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

A: No. Both the SN74ALS04BD and SN74ALS04BDR carry identical ROHS3 compliance and REACH unaffected status. Both parts are classified under the same ECCN (EAR99) and HTSUS (8542.39.0001) codes.

Q: What are the critical parameters for substitution compatibility?

A: Substitution compatibility is determined by: logic function (6-channel inverter), supply voltage range (4.5V ~ 5.5V), output current specifications (400µA high, 8mA low), input logic levels (0.8V low, 2V high), propagation delay (11ns @ 5V, 50pF), operating temperature range (0°C ~ 70°C), and 14-SOIC package format. All these parameters are identical between the SN74ALS04BD and SN74ALS04BDR.