SN74ACT573PWRE4 Equivalent & Substitute Parts

Part Overview

The SN74ACT573PWRE4 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 designed for applications requiring transparent latch functionality in digital logic systems. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain identical electrical characteristics and package compatibility to ensure seamless integration into existing designs.

Substiute Parts

SN74ACT573PWRE4

Texas InstrumentsIn Stock: 1094SN74ACT573PWRE4 Datasheet

Current PartRFQ

SN74ACT573PWR

Texas InstrumentsIn Stock: 10256SN74ACT573PWR Datasheet

Parametric EquivalentRFQ

MC74ACT573DTR2G

onsemiIn Stock: 3144MC74ACT573DTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ACT573PWRE4 is determined by strict adherence to the following critical parameters:

Primary Substitution Criteria:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage Supply Range: 4.5V ~ 5.5V
• Package Type: 20-TSSOP
• Operating Temperature Range: -40°C ~ 85°C
• Output Current Capability: 24mA (High and Low)

Acceptable Variation Tolerance:

• Propagation Delay Time: Up to 10.5ns (original specification: 6ns)
• Manufacturer: Alternative qualified manufacturers permitted
• Product Status: Active status preferred for long-term availability

Parts meeting all primary criteria are classified as parametric equivalents. Parts with identical electrical specifications but different packaging formats or manufacturers are classified as functional alternatives.

Parameter Comparison

Engineering Selection Recommendations

SN74ACT573PWR (Texas Instruments)

This part is the primary substitute for the SN74ACT573PWRE4. It maintains identical electrical specifications, including 8:8 circuit configuration, 6ns propagation delay, and 24mA output current capability. The SN74ACT573PWR is currently in active production status, ensuring long-term availability and supply chain reliability. Both parts are ROHS3 compliant with MSL 1 rating. The primary difference is packaging format (Cut Tape & Digi-Reel versus the original PWRE4 variant), which does not affect electrical performance or PCB integration.

MC74ACT573DTR2G (onsemi)

This part is a qualified alternative from onsemi, meeting all critical electrical parameters including voltage supply range, output current, operating temperature, and package type. The circuit configuration is listed as 1:8 rather than 8:8, and propagation delay is specified at 10.5ns compared to the original 6ns specification. This part is suitable for applications where timing margins accommodate the increased propagation delay. The MC74ACT573DTR2G is in active production status and carries equivalent compliance certifications (ROHS3, MSL 1).

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT573PWR directly replace the SN74ACT573PWRE4 in production?

A: Yes. Both parts share identical electrical specifications, package type (20-TSSOP), and compliance certifications. The primary difference is packaging format. No circuit modifications are required.

Q: What is the significance of the circuit configuration difference between the main part (8:8) and the MC74ACT573DTR2G (1:8)?

A: The circuit configuration describes the latch channel arrangement. The 8:8 configuration in the main part differs from the 1:8 configuration in the onsemi part. This difference must be evaluated against specific application requirements before substitution.

Q: Is the 10.5ns propagation delay of the MC74ACT573DTR2G acceptable as a substitute?

A: The MC74ACT573DTR2G has a propagation delay of 10.5ns compared to the original 6ns specification. Substitution is permissible only if system timing margins accommodate this 4.5ns increase. Design timing analysis is required to confirm compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both the SN74ACT573PWR and MC74ACT573DTR2G are ROHS3 compliant with MSL 1 rating, matching the original part's compliance status.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) and Digi-Reel packaging are supply formats that do not affect component electrical performance or PCB mounting. The choice depends on production volume and assembly equipment compatibility.

Q: Can I use the MC74ACT573DTR2G if timing is not critical in my application?

A: Yes, provided the increased propagation delay does not violate system timing requirements. The MC74ACT573DTR2G maintains all other critical electrical parameters and is suitable for non-timing-critical applications.