DM74ALS373SJ Equivalent & Substitute Parts

Part Overview

The DM74ALS373SJ is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 circuit configuration with tri-state output capability. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-SOP surface mount package. Identifying compatible alternatives ensures design flexibility and supply chain resilience for applications requiring this logic function.

Substiute Parts

DM74ALS373SJ

onsemiIn Stock: 2094DM74ALS373SJ Datasheet

Current PartRFQ

SN74ALS373ANSR

Texas InstrumentsIn Stock: 4297SN74ALS373ANSR Datasheet

DirectRFQ

SN74ALS373ADW

Texas InstrumentsIn Stock: 1989SN74ALS373ADW Datasheet

SimilarRFQ

SN74ALS373ADWR

Texas InstrumentsIn Stock: 2395SN74ALS373ADWR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DM74ALS373SJ are qualified based on the following critical parameters:

• Logic Type & Circuit Configuration: All substitutes maintain D-Type Transparent Latch functionality with 8:8 circuit configuration
• Output Characteristics: Tri-state output type with matching current specifications (2.6mA high, 24mA low)
• Electrical Specifications: Supply voltage range 4.5V ~ 5.5V and operating temperature 0°C ~ 70°C
• Mounting & Package: Surface mount technology with compatible SOIC package footprints
• Moisture Sensitivity: MSL 1 rating maintained across all substitutes

Substitutes are categorized as direct or similar based on packaging format and product status. Direct substitutes maintain identical packaging specifications, while similar substitutes may have different package dimensions but equivalent electrical functionality.

Parameter Comparison

Engineering Selection Recommendations

SN74ALS373ANSR (Texas Instruments) is the primary direct substitute, offering active product status with ROHS3 compliance. This part maintains the 20-SOIC (0.209", 5.30mm Width) package footprint identical to the original DM74ALS373SJ, ensuring direct PCB compatibility without layout modifications. Tape & Reel packaging supports automated assembly processes.

SN74ALS373ADWR (Texas Instruments) provides an alternative with active product status and ROHS3 compliance. This part uses a wider 20-SOIC package (0.295", 7.50mm Width) and requires PCB footprint verification before implementation. Tape & Reel packaging is suitable for high-volume production.

SN74ALS373ADW (Texas Instruments) carries Last Time Buy status, indicating limited future availability. While functionally equivalent with ROHS3 compliance, this part should be considered only when other active alternatives are unavailable. The wider 20-SOIC package (0.295", 7.50mm Width) requires PCB footprint assessment.

All three substitutes maintain electrical equivalence with the original part across supply voltage, output current, operating temperature, and logic function specifications. Propagation delay differences (6ns versus 2ns) are within acceptable tolerances for standard logic applications.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS373ANSR replace DM74ALS373SJ directly on the PCB?

A: Yes. The SN74ALS373ANSR maintains identical package dimensions (20-SOIC, 0.209", 5.30mm Width) and electrical specifications, enabling direct substitution without PCB layout modifications.

Q: What is the difference between SN74ALS373ADW and SN74ALS373ADWR?

A: Both parts are functionally equivalent with identical electrical specifications. The primary difference is packaging format: SN74ALS373ADW is supplied in Tube format, while SN74ALS373ADWR is supplied in Tape & Reel format. The Tape & Reel option is preferred for automated assembly processes.

Q: Are there package footprint differences between the substitutes?

A: Yes. SN74ALS373ANSR uses a 20-SOIC package with 0.209" width (5.30mm), matching the original DM74ALS373SJ. Both SN74ALS373ADW and SN74ALS373ADWR use a wider 20-SOIC package (0.295", 7.50mm). PCB footprint verification is required before selecting the wider package variants.

Q: What is the significance of the propagation delay difference (2ns vs. 6ns)?

A: The original DM74ALS373SJ specifies 2ns propagation delay, while all Texas Instruments substitutes specify 6ns. This difference is within acceptable tolerances for standard logic applications and does not affect functional compatibility in typical circuit designs.

Q: Which substitute offers the best long-term availability?

A: SN74ALS373ANSR and SN74ALS373ADWR both carry Active product status, indicating ongoing manufacturing and availability. SN74ALS373ADW is designated Last Time Buy, meaning production will cease and availability will become limited.

Q: Are all substitutes RoHS compliant?

A: Yes. All three Texas Instruments substitutes are ROHS3 compliant. The original DM74ALS373SJ is REACH Unaffected, which is compatible with RoHS requirements.