74HCT563N,652 Equivalent & Substitute Parts

Part Overview

The 74HCT563N,652 is a D-Type Transparent Latch logic IC manufactured by NXP USA Inc., featuring an 8:8 channel configuration with tri-state output capability in a 20-DIP package. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system maintenance, repair, and redesign applications. The part operates within the 4.5V to 5.5V supply voltage range and is suitable for through-hole mounting applications requiring transparent latch functionality in digital logic circuits.

Substiute Parts

74HCT563N,652

NXP USA Inc.In Stock: 273674HCT563N,652 Datasheet

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CD74HCT563E

Harris CorporationIn Stock: 5364CD74HCT563E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74HCT563N,652 is determined by strict equivalence across the following critical parameters:

• Logic Type & Circuit Configuration: Must be D-Type Transparent Latch with 8:8 channel configuration
• Output Type: Must provide tri-state output capability
• Supply Voltage Range: Must operate within 4.5V ~ 5.5V
• Package Type: Must be 20-DIP form factor with 0.300" (7.62mm) pitch for direct PCB compatibility
• Mounting Method: Must support through-hole mounting
• Independent Circuits: Must maintain 1 independent circuit configuration
• Output Current Capability: Must support minimum 6mA output current (high and low)

The CD74HCT563E manufactured by Harris Corporation meets all substitution criteria, maintaining functional and physical compatibility with the original 74HCT563N,652 component.

Parameter Comparison

Engineering Selection Recommendations

The CD74HCT563E serves as a direct functional substitute for the 74HCT563N,652 based on the following engineering criteria:

Functional Compatibility: Both components implement identical D-Type Transparent Latch logic with 8:8 channel configuration and tri-state output, ensuring pin-for-pin and functional compatibility in existing circuit designs.

Electrical Performance: The CD74HCT563E demonstrates superior propagation delay (12ns versus 18ns), providing improved timing performance while maintaining identical output current specifications and supply voltage requirements.

Temperature Operating Range: The CD74HCT563E extends the lower operating temperature limit to -55°C, providing broader environmental compatibility compared to the original -40°C specification.

Compliance Considerations: The 74HCT563N,652 maintains ROHS3 compliance status. The CD74HCT563E is classified as RoHS non-compliant. Selection between these parts should account for applicable regulatory requirements in the target application and end-market.

Product Status: Both components are classified as obsolete. Substitution decisions should prioritize current inventory availability and long-term supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can the CD74HCT563E be used as a direct replacement for the 74HCT563N,652 in existing designs?

A: Yes. Both components share identical logic type, circuit configuration, output type, supply voltage range, package form factor, and output current specifications. The CD74HCT563E provides equivalent functionality with improved propagation delay performance.

Q: What are the key differences between these two parts?

A: The primary differences are propagation delay (CD74HCT563E: 12ns versus 74HCT563N,652: 18ns), operating temperature range (CD74HCT563E: -55°C to 125°C versus 74HCT563N,652: -40°C to 125°C), and RoHS compliance status (74HCT563N,652 is ROHS3 compliant; CD74HCT563E is non-compliant).

Q: Are there any package or pinout differences?

A: No. Both components use identical 20-DIP (0.300", 7.62mm) through-hole packages with matching pinout configurations, enabling direct PCB substitution without layout modifications.

Q: Which part should be selected for new designs?

A: Selection should be based on supply chain availability, regulatory compliance requirements, and operating temperature specifications. The CD74HCT563E offers improved timing performance and extended temperature range, while the 74HCT563N,652 maintains RoHS3 compliance.

Q: Are both parts suitable for high-temperature applications?

A: The CD74HCT563E supports operation to -55°C, providing broader low-temperature capability. Both parts support operation to 125°C maximum. Application-specific temperature requirements should guide component selection.

Q: What is the significance of the obsolete product status?

A: Obsolete status indicates these components are no longer in active production. Substitution planning should account for remaining inventory availability and potential future supply constraints.