N74F573D,623 Equivalent & Substitute Parts

Part Overview

The N74F573D,623 is a D-Type Transparent Latch logic integrated circuit manufactured by NXP USA Inc. in a 20-SO surface mount package. This component functions as a single-channel 8:8 latch with tri-state output capability, operating within the 74F logic family. The part is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design support and procurement continuity.

Substiute Parts

N74F573D,623

NXP USA Inc.In Stock: 983N74F573D,623 Datasheet

Current PartRFQ

SN74F573DW

Texas InstrumentsIn Stock: 2234SN74F573DW Datasheet

MFR RecommendedRFQ

SN74F573DWR

Texas InstrumentsIn Stock: 2576SN74F573DWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the N74F573D,623 are qualified based on the following critical parameters:

• Logic Family & Function: 74F series D-Type Transparent Latch with 8:8 circuit configuration
• Electrical Specifications: Tri-state output, 4.5V ~ 5.5V supply voltage, 3mA/24mA output current capability
• Package Compatibility: 20-SOIC surface mount package with identical 0.295" (7.50mm) width
• Operating Conditions: 0°C ~ 70°C temperature range
• Compliance Standards: ROHS3 compliance, REACH unaffected status

The identified substitute parts maintain functional equivalence through identical logic type, circuit configuration, output characteristics, and package specifications. Variations in propagation delay time and product status reflect manufacturing differences between NXP and Texas Instruments implementations within the 74F logic family.

Parameter Comparison

Engineering Selection Recommendations

SN74F573DWR (Texas Instruments) is the primary substitute for the N74F573D,623. This part maintains active product status, ensuring long-term availability and supply chain stability. The SN74F573DWR is supplied in Tape & Reel format, standard for high-volume manufacturing operations. Full compliance with ROHS3 and REACH requirements is maintained.

SN74F573DW (Texas Instruments) serves as a secondary substitute option. This variant carries Last Time Buy status, indicating limited future availability. It is supplied in Tube packaging, suitable for lower-volume applications or prototype development. Electrical and functional specifications remain equivalent to the primary substitute.

Both Texas Instruments alternatives provide direct functional replacement with identical package geometry, electrical performance within specified parameters, and regulatory compliance. The propagation delay differential (8.6ns versus 3.5ns) reflects manufacturing process variations between NXP and Texas Instruments but remains within acceptable tolerances for 74F logic family applications.

Frequently Asked Questions (FAQ)

Q: Can the SN74F573DW and SN74F573DWR be used interchangeably with the N74F573D,623?

A: Yes. Both Texas Instruments parts are functionally equivalent substitutes. The primary difference is product status and packaging format. SN74F573DWR (active status, Tape & Reel) is recommended for new designs. SN74F573DW (Last Time Buy, Tube) is suitable for legacy system support with limited future availability.

Q: What is the significance of the propagation delay difference (3.5ns vs. 8.6ns)?

A: The propagation delay differential reflects manufacturing process variations between NXP and Texas Instruments. Both values fall within acceptable operating parameters for 74F logic family specifications. System timing analysis should confirm compatibility with circuit requirements.

Q: Are the package dimensions identical across all three parts?

A: Yes. All three parts use the 20-SOIC package with 0.295" (7.50mm) width. PCB footprints and assembly processes are directly compatible.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. The N74F573D,623 and both Texas Instruments substitutes are ROHS3 compliant and REACH unaffected. Regulatory requirements are maintained across all alternatives.

Q: Which substitute should be selected for new product designs?

A: SN74F573DWR is the appropriate selection for new designs. This part carries active product status, ensuring availability throughout the design lifecycle and into production phases.