DM74ALS08SJ Equivalent & Substitute Parts

Part Overview

The DM74ALS08SJ is a 4-channel 2-input AND gate logic IC manufactured by onsemi in a 14-SOP surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part operates within a 4.5V to 5.5V supply voltage range and is suitable for standard logic applications requiring AND gate functionality.

Substiute Parts

DM74ALS08SJ

onsemiIn Stock: 957DM74ALS08SJ Datasheet

Current PartRFQ

SN74ALS08NS

Texas InstrumentsIn Stock: 3027SN74ALS08NS Datasheet

DirectRFQ

SN74ALS08NSR

Texas InstrumentsIn Stock: 3148SN74ALS08NSR Datasheet

DirectRFQ

SN74ALS08D

Texas InstrumentsIn Stock: 3873SN74ALS08D Datasheet

SimilarRFQ

SN74ALS08DR

Texas InstrumentsIn Stock: 4134SN74ALS08DR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DM74ALS08SJ is determined by strict equivalence across the following parameters: logic type (AND gate), number of circuits (4), number of inputs per circuit (2), supply voltage range (4.5V ~ 5.5V), output current specifications (400µA high, 8mA low), propagation delay (14ns @ 5V, 50pF), and operating temperature range (0°C ~ 70°C). All substitute parts maintain these electrical specifications. Package variations exist within the 14-pin SOIC family, which affects mechanical compatibility but not electrical function. Substitute parts are grouped by package type: 14-SO (SN74ALS08NS, SN74ALS08NSR) and 14-SOIC (SN74ALS08D, SN74ALS08DR).

Parameter Comparison

Engineering Selection Recommendations

For new designs and long-term procurement, SN74ALS08NSR and SN74ALS08DR are the preferred selections due to their active product status and RoHS3 compliance. Both parts maintain full electrical equivalence to the DM74ALS08SJ while offering supply continuity. SN74ALS08NSR is supplied in Tape & Reel packaging suitable for automated assembly, while SN74ALS08DR is available in Cut Tape and Digi-Reel formats. SN74ALS08NS and SN74ALS08D remain available as alternatives but carry Last Time Buy status, indicating limited future availability. Package selection between 14-SO and 14-SOIC variants depends on PCB layout requirements and existing design specifications.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS08NSR directly replace DM74ALS08SJ? A: Yes. Both parts are electrically equivalent across all specified parameters: 4-channel AND gate, 2 inputs per channel, 4.5V to 5.5V supply, 14ns propagation delay, and 0°C to 70°C operating range. Package differences (14-SO vs. 14-SOP) require PCB layout verification.

Q: What is the difference between 14-SO and 14-SOIC packages? A: Both are 14-pin surface mount packages with different body widths. 14-SO measures 0.209" (5.30mm) width, while 14-SOIC measures 0.154" (3.90mm) width. Pin pitch and spacing differ, requiring appropriate PCB footprint design.

Q: Why is DM74ALS08SJ marked obsolete? A: Obsolete status indicates the manufacturer has discontinued production. Texas Instruments SN74ALS08 variants provide direct functional equivalents with active or Last Time Buy status.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All Texas Instruments substitute parts (SN74ALS08NS, SN74ALS08NSR, SN74ALS08D, SN74ALS08DR) are RoHS3 compliant.

Q: Which substitute part offers the best long-term availability? A: SN74ALS08NSR (Active status, Tape & Reel packaging) and SN74ALS08DR (Active status, Cut Tape & Digi-Reel packaging) both offer active product status with ongoing manufacturer support.