SN74AC373DWR Equivalent & Substitute Parts

Part Overview

The SN74AC373DWR is a D-Type Transparent Latch logic integrated circuit manufactured by Texas Instruments. This 20-SOIC surface mount device provides 1 channel with 8:8 circuit configuration and tri-state output capability. The part is classified as Active status and is widely used in digital logic applications requiring transparent latch functionality with high-speed propagation characteristics. Substitute parts are necessary to address supply chain variations, packaging preferences, and manufacturer availability while maintaining functional and electrical equivalence.

Substiute Parts

SN74AC373DWR

Texas InstrumentsIn Stock: 4416SN74AC373DWR Datasheet

Current PartRFQ

MC74AC373DWG

onsemiIn Stock: 2053MC74AC373DWG Datasheet

MFR RecommendedRFQ

MC74AC373DWR2G

onsemiIn Stock: 1950MC74AC373DWR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74AC373DWR are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Supply Voltage Range: 2V ~ 6V
• Propagation Delay Time: 7.5ns
• Output Current: 24mA (High and Low)
• Operating Temperature Range: -40°C ~ 85°C
• Base Product Number: 74AC373

Mechanical Equivalence Criteria:

• Package Type: 20-SOIC
• Mounting Type: Surface Mount
• Package Dimensions: 0.295" × 7.50mm Width

Compliance Criteria:

• RoHS3 Compliance
• REACH Unaffected Status
• ECCN: EAR99
• HTSUS: 8542.39.0001

The substitute parts MC74AC373DWG and MC74AC373DWR2G meet all electrical and mechanical requirements. Packaging format differences (Cut Tape vs. Tube vs. Tape & Reel) do not affect functional equivalence and are determined by supply chain and assembly process requirements.

Parameter Comparison

Engineering Selection Recommendations

All three parts—SN74AC373DWR, MC74AC373DWG, and MC74AC373DWR2G—are functionally and electrically equivalent for applications requiring D-Type Transparent Latch logic with 8:8 configuration and tri-state output.

Selection Basis:

The SN74AC373DWR (Texas Instruments) and MC74AC373DWG/MC74AC373DWR2G (onsemi) share identical electrical specifications and are both Active status products with ROHS3 compliance and REACH unaffected status.

Packaging format selection depends on assembly requirements: Cut Tape format for manual or small-batch assembly, Tube format for automated pick-and-place systems with tube feeders, and Tape & Reel format for high-volume production lines.

Moisture Sensitivity Level (MSL) differs between manufacturers. The SN74AC373DWR carries MSL 1 (unlimited shelf life), while onsemi substitutes carry MSL 3 (168-hour limit). Storage and handling procedures must align with the selected part's MSL rating.

Frequently Asked Questions (FAQ)

Q: Are MC74AC373DWG and MC74AC373DWR2G direct replacements for SN74AC373DWR?

A: Yes. Both onsemi parts are electrically and mechanically equivalent. They share identical logic type, circuit configuration, output type, supply voltage range, propagation delay, output current ratings, operating temperature range, and package type. Differences in packaging format and moisture sensitivity level do not affect functional compatibility.

Q: What is the difference between the three substitute options?

A: The primary differences are manufacturer (Texas Instruments vs. onsemi) and packaging format. SN74AC373DWR is supplied in Cut Tape & Digi-Reel format. MC74AC373DWG is supplied in Tube format. MC74AC373DWR2G is supplied in Tape & Reel format. All three are electrically identical with 7.5ns propagation delay and 24mA output current capability.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Cut Tape, Tube, or Tape & Reel) is a supply chain and assembly consideration only. Electrical performance and functional characteristics remain identical across all three parts.

Q: What is the significance of Moisture Sensitivity Level (MSL) differences?

A: MSL indicates maximum shelf life under specified humidity conditions. SN74AC373DWR (MSL 1) has unlimited shelf life. MC74AC373DWG and MC74AC373DWR2G (MSL 3) must be used within 168 hours of opening the original packaging under controlled humidity. Storage and handling procedures must comply with the selected part's MSL rating.

Q: Can I use these parts interchangeably in my PCB design?

A: Yes. All three parts use the 20-SOIC package with identical pin configuration and electrical characteristics. PCB footprints and schematic symbols are interchangeable.

Q: Are all three parts RoHS compliant?

A: Yes. SN74AC373DWR, MC74AC373DWG, and MC74AC373DWR2G are all ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements.

Q: Which part should I select for high-volume production?

A: MC74AC373DWR2G (Tape & Reel format) is optimized for high-volume automated assembly. MC74AC373DWG (Tube format) is suitable for medium-volume production with tube feeders. SN74AC373DWR (Cut Tape format) is appropriate for lower-volume or manual assembly processes.