74ACT533PC Equivalent & Substitute Parts

Part Overview

The 74ACT533PC is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 circuit configuration with tri-state output capability. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The 74ACT533PC operates within the 4.5V to 5.5V supply voltage range and is housed in a 20-DIP package suitable for through-hole mounting applications.

Substiute Parts

74ACT533PC

onsemiIn Stock: 73174ACT533PC Datasheet

Current PartRFQ

SN74ACT533N

Texas InstrumentsIn Stock: 1668SN74ACT533N Datasheet

SimilarRFQ

SN74ACT573N

Texas InstrumentsIn Stock: 2082SN74ACT573N Datasheet

Parametric EquivalentRFQ

SN74ACT573NE4

Texas InstrumentsIn Stock: 874SN74ACT573NE4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ACT533PC 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
• Operating Temperature Range: -40°C ~ 85°C
• Package Type: 20-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Output Current Capability: 24mA (High and Low)

Two substitute parts meet these criteria. The SN74ACT533N provides direct functional equivalence with improved propagation delay performance (2.5ns versus 6ns). The SN74ACT573N and SN74ACT573NE4 maintain identical propagation delay and all other electrical parameters while offering active product status and enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

For new designs and ongoing procurement, the SN74ACT533N (Texas Instruments) is the primary substitute for the 74ACT533PC. This part maintains full electrical and mechanical compatibility while offering active product status and superior propagation delay performance at 2.5ns. The SN74ACT533N carries ROHS3 compliance certification and is available in standard tube packaging.

The SN74ACT573N serves as a parametric equivalent alternative, maintaining identical propagation delay (6ns) and all electrical specifications of the original 74ACT533PC. This part is actively manufactured by Texas Instruments and carries ROHS3 compliance. The SN74ACT573NE4 provides the same electrical performance but is discontinued at DiGi Electronics, limiting its suitability for new procurement despite its compliance certifications.

Selection between SN74ACT533N and SN74ACT573N should be based on timing requirements. Applications requiring faster propagation delay should specify SN74ACT533N. Applications with timing margins accommodating 6ns propagation delay may select either part based on availability and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can the SN74ACT533N directly replace the 74ACT533PC in existing designs?

A: Yes. The SN74ACT533N is electrically and mechanically equivalent to the 74ACT533PC across all specified parameters. The improved propagation delay (2.5ns versus 6ns) provides performance enhancement without requiring circuit modification. Both parts operate identically within the 4.5V to 5.5V supply range and share the 20-DIP package footprint.

Q: What is the difference between SN74ACT533N and SN74ACT573N?

A: Both parts are functionally equivalent D-Type Transparent Latch ICs with 8:8 circuit configuration and tri-state output. The primary difference is propagation delay: SN74ACT533N operates at 2.5ns while SN74ACT573N operates at 6ns, matching the original 74ACT533PC specification. All other electrical and mechanical parameters are identical.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts (SN74ACT533N, SN74ACT573N, and SN74ACT573NE4) are housed in the 20-DIP (0.300", 7.62mm) package with through-hole mounting, ensuring direct footprint compatibility with the 74ACT533PC.

Q: What compliance certifications apply to the substitute parts?

A: The SN74ACT533N and SN74ACT573N both carry ROHS3 compliance certification. All substitute parts maintain REACH Unaffected status and EAR99 export classification, matching the regulatory profile of the original 74ACT533PC.

Q: Why is the 74ACT533PC classified as obsolete?

A: The 74ACT533PC is an onsemi product that has reached end-of-life status. Texas Instruments continues active manufacturing of functionally equivalent alternatives (SN74ACT533N and SN74ACT573N), ensuring design continuity and supply availability for this logic function.