DM74ALS08SJX Equivalent & Substitute Parts

Part Overview

The DM74ALS08SJX 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 substitute parts necessary for ongoing production and maintenance applications. The 74ALS logic family provides standard AND gate functionality with TTL-compatible voltage levels and propagation characteristics suitable for digital logic circuits requiring 4.5V to 5.5V supply operation.

Substiute Parts

DM74ALS08SJX

onsemiIn Stock: 1172DM74ALS08SJX Datasheet

Current PartRFQ

SN74ALS08NS

Texas InstrumentsIn Stock: 3027SN74ALS08NS Datasheet

DirectRFQ

SN74ALS08D

Texas InstrumentsIn Stock: 3873SN74ALS08D Datasheet

SimilarRFQ

SN74ALS08DR

Texas InstrumentsIn Stock: 4134SN74ALS08DR Datasheet

SimilarRFQ

SN74ALS08NSR

Texas InstrumentsIn Stock: 3148SN74ALS08NSR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DM74ALS08SJX is determined by the following critical parameters: logic type (AND gate), circuit count (4 channels), input count (2 inputs per channel), 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 core electrical specifications. Package variations (14-SOP, 14-SO, 14-SOIC) are mechanically compatible within the specified footprint dimensions and represent acceptable substitutions for surface mount assembly. Differences in input logic level thresholds and packaging formats do not prevent functional equivalence when electrical performance requirements are met.

Parameter Comparison

Engineering Selection Recommendations

For new designs and production requiring replacement of the obsolete DM74ALS08SJX, the SN74ALS08DR (Texas Instruments) is the primary selection due to its active product status and ROHS3 compliance. This part maintains all electrical specifications and operates within the specified 0°C to 70°C temperature range with identical propagation delay and output current characteristics.

The SN74ALS08NSR provides an alternative with active status and ROHS3 compliance, suitable for applications requiring tape and reel packaging format. Both parts are manufactured by Texas Instruments and carry equivalent electrical performance to the original onsemi component.

The SN74ALS08NS and SN74ALS08D remain available as secondary options with last-time-buy status. These parts maintain full electrical equivalence but have limited future availability. Selection between these options depends on packaging requirements: SN74ALS08NS in 14-SO format with 0.209" width, or SN74ALS08D in 14-SOIC format with 0.154" width.

All substitute parts are ROHS3 compliant and carry MSL rating of 1 (unlimited moisture sensitivity), matching the environmental specifications of the original component.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS08DR replace DM74ALS08SJX directly? A: Yes. Both parts share identical electrical specifications: 4-channel AND gate configuration, 4.5V to 5.5V supply voltage, 14ns propagation delay at 5V with 50pF load, and 0°C to 70°C operating temperature. Package dimensions are compatible for surface mount assembly.

Q: What is the difference between the 14-SOIC packages listed? A: The DM74ALS08SJX, SN74ALS08NS, and SN74ALS08NSR use 14-SOIC with 0.209" width. The SN74ALS08D and SN74ALS08DR use 14-SOIC with 0.154" width. Both are mechanically compatible 14-pin SOIC packages with different body widths. PCB footprint design must accommodate the specific width dimension.

Q: Why is the DM74ALS08SJX listed as obsolete? A: Obsolete status indicates the part is no longer manufactured by onsemi. Substitute parts from Texas Instruments provide equivalent functionality and are available in active production status.

Q: Are all substitute parts RoHS compliant? A: Yes. All Texas Instruments substitute parts (SN74ALS08NS, SN74ALS08D, SN74ALS08DR, SN74ALS08NSR) are ROHS3 compliant. The original onsemi part RoHS status is not specified in available documentation.

Q: What packaging formats are available for substitution? A: Substitute parts are available in three packaging formats: 14-SO (SN74ALS08NS, SN74ALS08NSR in tape and reel or tube), and 14-SOIC (SN74ALS08D, SN74ALS08DR in tube or cut tape with digi-reel). All are surface mount configurations.

Q: Do input logic level thresholds affect substitution? A: Input logic level specifications vary slightly between parts (DM74ALS08SJX and SN74ALS08DR at 0.8V low / 2V high; SN74ALS08NS at 0.4V-0.5V low / 2.5V high). These variations remain within TTL-compatible ranges and do not prevent functional substitution in standard digital logic applications.