SN74AC373DW Equivalent & Substitute Parts

Part Overview

The SN74AC373DW is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring an 8:8 circuit configuration with tri-state output capability in a 20-SOIC surface mount package. This component is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design requirements and production continuity. The part operates across a 2V to 6V supply voltage range with 7.5ns propagation delay and supports operating temperatures from -40°C to 85°C.

Substiute Parts

SN74AC373DW

Texas InstrumentsIn Stock: 2420SN74AC373DW Datasheet

Current PartRFQ

SN74AC373DWR

Texas InstrumentsIn Stock: 4416SN74AC373DWR Datasheet

DirectRFQ

MC74AC373DWG

onsemiIn Stock: 2053MC74AC373DWG Datasheet

MFR RecommendedRFQ

MC74AC373DWR2G

onsemiIn Stock: 1950MC74AC373DWR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74AC373DW are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage Supply Range: 2V ~ 6V
• Propagation Delay: 7.5ns
• Output Current Capability: 24mA (High and Low)
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

All substitute parts listed maintain identical electrical specifications and mechanical compatibility. Variations in packaging format (Tube, Cut Tape & Digi-Reel®, or Tape & Reel) and manufacturer do not affect functional equivalence when these core parameters are matched.

Parameter Comparison

Engineering Selection Recommendations

SN74AC373DWR (Texas Instruments): Direct manufacturer substitute with active product status. Identical electrical and mechanical specifications to the main part. Available in Cut Tape & Digi-Reel® packaging format with higher inventory availability (4365 units). Maintains ROHS3 compliance and all performance characteristics. Recommended for applications requiring Texas Instruments sourcing continuity.

MC74AC373DWG (onsemi): Manufacturer-recommended equivalent from onsemi with active product status. Meets all electrical and mechanical requirements. Available in Tube packaging. Moisture Sensitivity Level (MSL) rated at 3 (168 Hours) compared to MSL 1 for the main part. Suitable for standard production environments with appropriate moisture control measures.

MC74AC373DWR2G (onsemi): Manufacturer-recommended equivalent from onsemi with active product status. Identical electrical specifications to MC74AC373DWG. Available in Tape & Reel packaging format optimized for high-volume automated assembly. MSL rated at 3 (168 Hours). Recommended for production runs requiring reel-based component feeding.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with existing design requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74AC373DWR be used as a direct replacement for SN74AC373DW?

A: Yes. SN74AC373DWR is a direct functional equivalent manufactured by Texas Instruments with identical electrical specifications, propagation delay, output current capability, and operating temperature range. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tube) and product status (Active versus Discontinued).

Q: What is the difference between the Texas Instruments and onsemi substitute parts?

A: All parts maintain identical logic type, circuit configuration, output type, voltage supply range, propagation delay, output current, operating temperature, and 20-SOIC package specifications. The primary differences are manufacturer identity and Moisture Sensitivity Level (MSL): Texas Instruments parts are MSL 1 (Unlimited), while onsemi parts are MSL 3 (168 Hours). This affects storage and handling requirements but not functional performance.

Q: Does packaging format affect electrical performance?

A: No. Tube, Cut Tape & Digi-Reel®, and Tape & Reel packaging formats contain identical die and electrical characteristics. Packaging selection is determined by assembly process requirements and inventory management practices, not performance specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. SN74AC373DWR, MC74AC373DWG, and MC74AC373DWR2G are all ROHS3 compliant and REACH unaffected, maintaining regulatory compatibility with the original SN74AC373DW.

Q: What does MSL 3 (168 Hours) mean for onsemi parts?

A: Moisture Sensitivity Level 3 indicates the component can be exposed to ambient conditions (typically 30°C / 85% RH) for a maximum of 168 hours before requiring baking. This is a storage and handling specification that does not affect electrical performance or long-term reliability in sealed applications.

Q: Which substitute part should be selected for high-volume production?

A: MC74AC373DWR2G is optimized for high-volume automated assembly due to Tape & Reel packaging format. SN74AC373DWR is suitable for mixed-volume production with Cut Tape & Digi-Reel® availability. MC74AC373DWG is appropriate for lower-volume or manual assembly processes with Tube packaging.