DM74ALS373WMX Equivalent & Substitute Parts

Part Overview

The DM74ALS373WMX is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 circuit configuration with tri-state output in a 20-SOIC 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 applications requiring transparent latch functionality in digital logic circuits.

Substiute Parts

DM74ALS373WMX

onsemiIn Stock: 1282DM74ALS373WMX Datasheet

Current PartRFQ

SN74ALS373ADW

Texas InstrumentsIn Stock: 1989SN74ALS373ADW Datasheet

DirectRFQ

SN74ALS373ADWR

Texas InstrumentsIn Stock: 2395SN74ALS373ADWR Datasheet

DirectRFQ

SN74ALS373ANSR

Texas InstrumentsIn Stock: 4297SN74ALS373ANSR Datasheet

SimilarRFQ

SN74ALS573CDWR

Texas InstrumentsIn Stock: 2822SN74ALS573CDWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DM74ALS373WMX is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage - Supply: 4.5V ~ 5.5V
• Independent Circuits: 1
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-SOIC or equivalent footprint

Substitute parts are grouped into three categories based on their relationship to the main part:

Direct Manufacturer Substitutes: Parts with identical electrical specifications and package dimensions, differing only in manufacturer or packaging format (tube vs. tape & reel).

Similar Substitutes: Parts meeting all electrical requirements but with minor package variations (different package width specifications) that may require PCB layout verification.

Parametric Equivalents: Parts with identical electrical performance and package dimensions but different base product numbers within the same logic family, offering functional equivalence for the application.

Parameter Comparison

Engineering Selection Recommendations

SN74ALS373ADWR (Recommended Primary Substitute)

The SN74ALS373ADWR from Texas Instruments is the preferred substitute for the obsolete DM74ALS373WMX. This part maintains identical electrical specifications, package dimensions (20-SOIC 0.295" width), and operating parameters. The part carries Active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment. Packaging in tape & reel format supports automated assembly processes.

SN74ALS573CDWR (Parametric Equivalent)

The SN74ALS573CDWR offers identical propagation delay (2ns) and package specifications to the original part, with Active product status and ROHS3 compliance. The different base product number (74ALS573 vs. 74ALS373) reflects a variant within the same logic family. This part is suitable where propagation delay matching is critical to circuit timing.

SN74ALS373ADW (Secondary Substitute)

The SN74ALS373ADW provides direct electrical equivalence with identical package dimensions but carries Last Time Buy status. This part is suitable only for applications where immediate procurement is possible and long-term availability is not a requirement.

SN74ALS373ANSR (Package Variant)

The SN74ALS373ANSR differs in package width specification (20-SOIC 0.209" vs. 0.295"), requiring PCB layout verification before implementation. This part is Active with ROHS3 compliance but should only be selected if the narrower package footprint is compatible with existing board designs.

Frequently Asked Questions (FAQ)

Q: Can I directly replace DM74ALS373WMX with SN74ALS373ADWR without circuit modifications?

A: Yes. The SN74ALS373ADWR maintains identical electrical specifications, supply voltage range, output current ratings, and package dimensions. No circuit modifications are required for direct substitution.

Q: What is the difference between SN74ALS373ADWR and SN74ALS573CDWR?

A: Both parts are functionally equivalent with identical propagation delay (2ns) and package specifications. The difference lies in the base product number (74ALS373 vs. 74ALS573), indicating variants within the 74ALS logic family. Both are suitable substitutes for the original part.

Q: Why does SN74ALS373ANSR have a different package width?

A: The SN74ALS373ANSR uses a 20-SO package with 0.209" width compared to the standard 20-SOIC with 0.295" width. While electrically equivalent, the narrower package may not be compatible with existing PCB layouts designed for the wider package. PCB footprint verification is required before selection.

Q: What is the significance of propagation delay differences between substitute parts?

A: The DM74ALS373WMX and SN74ALS573CDWR both specify 2ns propagation delay, while SN74ALS373ADW, SN74ALS373ADWR, and SN74ALS373ANSR specify 6ns. For timing-critical applications, the 2ns variants ensure performance matching. For non-critical applications, the 6ns variants are acceptable substitutes.

Q: Are all substitute parts RoHS compliant?

A: Yes. All Texas Instruments substitute parts listed carry ROHS3 compliance certification, meeting current environmental and regulatory requirements.

Q: What packaging formats are available for the substitute parts?

A: SN74ALS373ADW is supplied in tube format. SN74ALS373ADWR and SN74ALS573CDWR are supplied in tape & reel format suitable for automated assembly. SN74ALS373ANSR is also supplied in tape & reel format.

Q: Which substitute part has the longest product lifecycle?

A: SN74ALS373ADWR and SN74ALS573CDWR both carry Active product status, indicating ongoing manufacturer support and availability. SN74ALS373ADW carries Last Time Buy status, indicating limited future availability.