SN74AC573DWR Equivalent & Substitute Parts

Part Overview

The SN74AC573DWR is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring an 8:8 circuit configuration with tri-state output capability. This component is classified as a single-channel transparent latch in the 74AC logic series and is housed in a 20-SOIC surface mount package. The part maintains active product status with full availability in inventory.

Substitute parts become necessary when the primary part experiences supply constraints, when alternative packaging formats are required for manufacturing processes, or when equivalent performance specifications from alternative manufacturers meet design requirements.

Substiute Parts

SN74AC573DWR

Texas InstrumentsIn Stock: 6012SN74AC573DWR Datasheet

Current PartRFQ

SN74AC533DWR

Texas InstrumentsIn Stock: 883SN74AC533DWR Datasheet

Parametric EquivalentRFQ

MC74AC573DWR2G

onsemiIn Stock: 1952MC74AC573DWR2G Datasheet

DirectRFQ

MC74AC573DWG

onsemiIn Stock: 3269MC74AC573DWG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74AC573DWR is determined by the following critical parameters:

Mandatory Matching Parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage Supply Range: 2V to 6V
• Independent Circuits: 1
• Output Current: 24mA / 24mA
• Operating Temperature Range: -40°C to 85°C
• Package Type: 20-SOIC
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Manufacturer (Texas Instruments, onsemi)
• Packaging Format (Cut Tape, Tape & Reel, Tube)
• Propagation Delay Time (within functional specifications)
• Moisture Sensitivity Level (MSL)
• Product Status (Active or Discontinued at DiGi Electronics)

All substitute parts listed maintain electrical and mechanical compatibility with the primary part specification.

Parameter Comparison

Engineering Selection Recommendations

SN74AC533DWR (Parametric Equivalent): This Texas Instruments part maintains identical electrical specifications to the primary part with marginally faster propagation delay (2ns versus 2.5ns). However, this part is discontinued at DiGi Electronics, limiting availability for new procurement. Selection is appropriate only when existing inventory is accessible through alternative distribution channels.

MC74AC573DWR2G (Direct Substitute): This onsemi equivalent provides identical base product functionality with Tape & Reel packaging suitable for automated assembly processes. The 10ns propagation delay remains within acceptable operational parameters for most applications. MSL rating of 3 (168 Hours) requires standard moisture control during storage and handling. This part is actively manufactured and maintained in inventory.

MC74AC573DWG (MFR Recommended): This onsemi part offers the same electrical performance as MC74AC573DWR2G with Tube packaging format. Selection depends on assembly process requirements and packaging compatibility with existing production workflows. Active product status ensures long-term availability.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the primary part's regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74AC533DWR be used as a direct replacement for SN74AC573DWR?

A: SN74AC533DWR meets all mandatory electrical and mechanical parameters for substitution. The 0.5ns faster propagation delay (2ns versus 2.5ns) presents no compatibility issues. However, discontinued product status at DiGi Electronics restricts procurement viability for new designs.

Q: What is the difference between MC74AC573DWR2G and MC74AC573DWG?

A: Both onsemi parts are electrically identical with matching propagation delay (10ns), output current ratings, and operating temperature ranges. The primary difference is packaging format: MC74AC573DWR2G uses Tape & Reel format for automated pick-and-place assembly, while MC74AC573DWG uses Tube format for manual or alternative assembly processes.

Q: Does the 10ns propagation delay of onsemi parts affect circuit performance compared to the 2.5ns specification of the primary part?

A: Propagation delay differences are within the functional specification range for D-Type Transparent Latch applications. Circuit timing requirements must be evaluated against specific application parameters. The onsemi parts remain electrically compatible for standard latch operations.

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

A: MSL 3 indicates the component can be exposed to ambient conditions of 30°C and 85% relative humidity for a maximum of 168 hours before soldering. Standard moisture control procedures during storage and handling are required. This differs from the primary part's MSL 1 (Unlimited) rating, which requires no moisture precautions.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the primary SN74AC573DWR part.

Q: Which substitute part should be selected for new production designs?

A: MC74AC573DWG or MC74AC573DWR2G are appropriate for new designs, as both maintain active product status with established manufacturing and distribution channels. Selection between these onsemi parts depends on packaging format compatibility with existing assembly processes.