SN74ALS373ADW Equivalent & Substitute Parts

Part Overview

The SN74ALS373ADW is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring 1 channel with 8:8 circuit configuration and tri-state output capability. This 20-SOIC surface mount device operates within the 4.5V to 5.5V supply voltage range and is designed for digital logic applications requiring transparent latch functionality. The main part is currently in Last Time Buy status, making equivalent and substitute parts necessary for ongoing design support and procurement planning.

Substiute Parts

SN74ALS373ADW

Texas InstrumentsIn Stock: 1989SN74ALS373ADW Datasheet

Current PartRFQ

SN74ALS373ADWR

Texas InstrumentsIn Stock: 2395SN74ALS373ADWR Datasheet

MFR RecommendedRFQ

SN74ALS533ADW

Texas InstrumentsIn Stock: 2012SN74ALS533ADW Datasheet

Parametric EquivalentRFQ

SN74ALS563BDW

Texas InstrumentsIn Stock: 869SN74ALS563BDW Datasheet

Parametric EquivalentRFQ

SN74AS573ADW

Texas InstrumentsIn Stock: 2283SN74AS573ADW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ALS373ADW is determined by strict equivalence across the following critical parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage - Supply: 4.5V ~ 5.5V
• Delay Time - Propagation: 6ns
• Current - Output High, Low: 2.6mA, 24mA
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All substitute parts listed maintain identical electrical and mechanical specifications across these parameters. Variations in packaging format (Tube vs. Tape & Reel) and product status do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the SN74ALS373ADW. Selection among these equivalents should be based on the following factors:

Product Status Consideration: SN74ALS373ADWR, SN74ALS533ADW, SN74ALS563BDW, and SN74AS573ADW are all in Active product status, providing long-term availability and supply chain stability compared to the main part's Last Time Buy status.

Packaging Format: SN74ALS373ADWR is supplied in Tape & Reel format, suitable for automated assembly processes. SN74ALS373ADW, SN74ALS533ADW, SN74ALS563BDW, and SN74AS573ADW are supplied in Tube format, appropriate for manual handling and lower-volume applications.

Compliance Certification: All parts maintain ROHS3 compliance and REACH Unaffected status, meeting environmental and regulatory requirements for industrial and commercial applications.

Inventory Availability: Current stock levels range from 800 to 2290 pieces across substitute options, supporting immediate procurement needs.

Frequently Asked Questions (FAQ)

Q: Can SN74ALS373ADWR be used as a direct replacement for SN74ALS373ADW?

A: Yes. Both parts are electrically and mechanically identical. The primary difference is packaging format: SN74ALS373ADWR uses Tape & Reel format while SN74ALS373ADW uses Tube format. Selection depends on assembly process requirements.

Q: What is the difference between the 74ALS and 74AS series substitutes?

A: SN74AS573ADW belongs to the 74AS logic series while other substitutes belong to the 74ALS series. All maintain identical electrical specifications for voltage supply, propagation delay, output current, and operating temperature. Series designation reflects manufacturing process differences that do not affect functional performance in this application.

Q: Are all substitute parts suitable for the same PCB layout?

A: Yes. All substitute parts use the identical 20-SOIC package with 0.295" width and 7.50mm dimensions. PCB footprints, pin assignments, and mounting requirements are identical across all listed parts.

Q: Why is the main part listed as Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing this specific part number. Active substitute parts provide equivalent functionality with assured long-term availability.

Q: Do all parts meet the same environmental compliance standards?

A: Yes. All parts are ROHS3 compliant, REACH Unaffected, and carry Moisture Sensitivity Level 1 (Unlimited), meeting identical environmental and handling requirements.