74ACT563SC Equivalent & Substitute Parts

Part Overview

The 74ACT563SC is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring 1 channel with 8:8 circuit configuration and tri-state output capability. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The 20-SOIC surface mount package provides standard integration for digital logic applications requiring transparent latch functionality with tri-state output control.

Substiute Parts

74ACT563SC

onsemiIn Stock: 100474ACT563SC Datasheet

Current PartRFQ

SN74ACT563DWR

Texas InstrumentsIn Stock: 3766SN74ACT563DWR Datasheet

DirectRFQ

SN74ACT563DW

Texas InstrumentsIn Stock: 1647SN74ACT563DW Datasheet

Parametric EquivalentRFQ

SN74ACT573DW

Texas InstrumentsIn Stock: 2818SN74ACT573DW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT563SC is determined by strict equivalence across the following critical parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Supply Voltage Range: 4.5V ~ 5.5V
• Independent Circuits: 1
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

All identified substitute parts maintain these core electrical and mechanical specifications. Variations in propagation delay (6ns to 7ns) and packaging format (Tape & Reel versus Tube) do not affect functional substitutability but may impact procurement and assembly workflows.

Parameter Comparison

Engineering Selection Recommendations

SN74ACT563DWR (Texas Instruments, Active Status)

This part is the primary substitute for new designs and ongoing procurement. It maintains full electrical and mechanical compatibility with the 74ACT563SC while offering active product status from a major manufacturer. The Tape & Reel packaging format supports automated assembly processes. ROHS3 compliance and unlimited moisture sensitivity level ensure regulatory alignment and storage flexibility.

SN74ACT563DW (Texas Instruments, Last Time Buy)

This parametric equivalent provides identical electrical performance to the SN74ACT563DWR with the same propagation delay and output characteristics. The Tube packaging format is suitable for manual assembly or lower-volume applications. Last Time Buy status indicates limited future availability; procurement should prioritize the Active status SN74ACT563DWR for long-term supply security.

SN74ACT573DW (Texas Instruments, Discontinued at DiGi Electronics)

This part maintains full electrical and mechanical substitutability with marginally improved propagation delay (6ns versus 7ns). Discontinued status at major distributors restricts availability. This option is suitable only for legacy system maintenance where existing inventory exists or for applications where the faster propagation delay provides measurable benefit.

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT563DWR directly replace the 74ACT563SC without circuit modifications?

A: Yes. The SN74ACT563DWR maintains identical logic type, circuit configuration, output type, supply voltage range, output current ratings, operating temperature range, and 20-SOIC package specifications. No circuit modifications are required.

Q: What is the significance of the propagation delay difference between 7ns and 6ns?

A: The propagation delay variation (7ns for 74ACT563SC, 6.5ns for SN74ACT563DWR, and 6ns for SN74ACT573DW) reflects manufacturing process differences between onsemi and Texas Instruments. All values remain within the same performance class for standard logic applications. Timing-critical designs should verify that the faster delays do not introduce setup or hold time violations in existing circuits.

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

A: Tape & Reel (TR) packaging is optimized for automated pick-and-place assembly and high-volume production. Tube packaging is suitable for manual assembly, lower-volume applications, and bench-level component handling. Both formats contain identical die and electrical performance; the choice depends on assembly methodology and procurement volume.

Q: Why is the 74ACT563SC marked as obsolete?

A: Obsolete status indicates that onsemi has discontinued manufacturing and support for this part number. Texas Instruments continues to manufacture functionally equivalent parts under the 74ACT563 and 74ACT573 base product numbers, ensuring design continuity and supply availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All Texas Instruments substitute parts (SN74ACT563DWR, SN74ACT563DW, and SN74ACT573DW) are ROHS3 compliant. The original 74ACT563SC RoHS status was not specified in the provided data.

Q: Can I use SN74ACT573DW as a substitute if the other options are unavailable?

A: Yes, with the caveat that SN74ACT573DW is discontinued at DiGi Electronics, limiting future availability. It provides full electrical and mechanical compatibility. Verify that the improved propagation delay (6ns) does not create timing conflicts in your specific application before committing to this option for production use.