SN74ACT563DBR Equivalent & Substitute Parts

Part Overview

The SN74ACT563DBR is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring an 8:8 circuit configuration with tri-state output capability in a 20-SSOP surface mount package. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity. The part operates within a 4.5V to 5.5V supply voltage range and is suitable for applications requiring transparent latch functionality with independent tri-state output control.

Substiute Parts

SN74ACT563DBR

Texas InstrumentsIn Stock: 1046SN74ACT563DBR Datasheet

Current PartRFQ

SN74ACT573DBR

Texas InstrumentsIn Stock: 3186SN74ACT573DBR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SN74ACT563DBR are identified based on strict parametric equivalence across the following critical criteria:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Supply Voltage Range: 4.5V ~ 5.5V
• Package / Case: 20-SSOP
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 85°C
• Independent Circuits: 1

The SN74ACT573DBR meets all these requirements and qualifies as a parametric equivalent. Both parts share identical electrical specifications, mechanical packaging, and thermal operating ranges, enabling direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The SN74ACT573DBR is the qualified substitute for the obsolete SN74ACT563DBR. Selection of the SN74ACT573DBR is supported by the following factors:

• Identical parametric specifications across all critical electrical and mechanical parameters
• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance maintained, meeting environmental and regulatory requirements
• Propagation delay of 6ns is superior to the main part's 6.5ns specification, providing improved timing performance
• Both parts carry identical moisture sensitivity level (MSL 1) and REACH unaffected status

The substitute part is suitable for direct replacement in applications currently specified for the SN74ACT563DBR without circuit redesign or board layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT573DBR be used as a direct replacement for the SN74ACT563DBR?

A: Yes. Both parts share identical logic type, circuit configuration, output type, supply voltage, package, and operating temperature specifications. Direct substitution is supported without circuit modification.

Q: What is the difference in propagation delay between these parts?

A: The SN74ACT573DBR has a propagation delay of 6ns compared to the SN74ACT563DBR at 6.5ns. This represents improved timing performance in the substitute part.

Q: Are there packaging differences between these parts?

A: No. Both parts use the 20-SSOP surface mount package with identical dimensions (0.209", 5.30mm Width). PCB footprints and assembly processes remain unchanged.

Q: Why is the SN74ACT563DBR listed as obsolete?

A: The SN74ACT563DBR has reached end-of-life status. The SN74ACT573DBR remains in active production, providing a viable alternative for new designs and production continuity.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited).