74F573SJX Equivalent & Substitute Parts

Part Overview

The 74F573SJX 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, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The part operates within the 4.5V to 5.5V supply voltage range and is housed in a 20-SOP surface mount package.

Substiute Parts

74F573SJX

onsemiIn Stock: 210274F573SJX Datasheet

Current PartRFQ

SN74F573DW

Texas InstrumentsIn Stock: 2234SN74F573DW Datasheet

SimilarRFQ

SN74F573DWR

Texas InstrumentsIn Stock: 2576SN74F573DWR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74F573SJX are identified based on strict equivalence of 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: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Base Product Number: 74F573

The substitute parts SN74F573DW and SN74F573DWR, both manufactured by Texas Instruments, meet all functional and electrical equivalence criteria. Both maintain the same logic architecture, circuit configuration, output characteristics, and voltage specifications. Differences in propagation delay time (8.6ns versus 5.3ns) and package width dimensions remain within acceptable substitution parameters for this product category. Packaging format variations (Tube versus Tape & Reel) do not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the 74F573SJX, the SN74F573DWR is the primary substitute selection. This part carries Active product status from Texas Instruments, ensuring long-term availability and supply chain stability. The SN74F573DWR is ROHS3 compliant and available in Tape & Reel packaging, supporting automated assembly processes.

The SN74F573DW represents a secondary option, classified as Last Time Buy by Texas Instruments. This part maintains full functional equivalence but offers limited procurement window for new designs.

Both Texas Instruments substitutes accommodate the physical footprint requirements of 20-SOIC surface mount packages, though package width dimensions differ from the original onsemi part (7.50mm versus 5.30mm). PCB layout verification is necessary to confirm mechanical fit within existing designs.

Frequently Asked Questions (FAQ)

Q: Are the SN74F573DW and SN74F573DWR electrically interchangeable with the 74F573SJX?

A: Yes. Both parts maintain identical logic type, circuit configuration, output type, supply voltage range, independent circuit count, and operating temperature specifications. Functional compatibility is established across all critical electrical parameters.

Q: What is the significance of the propagation delay difference (5.3ns versus 8.6ns)?

A: The Texas Instruments substitutes exhibit longer propagation delay. This difference must be evaluated against specific timing requirements of the application. If the original design margin accommodates 8.6ns propagation delay, substitution is valid. If timing is critical, system-level analysis is required.

Q: Can I use SN74F573DW in new designs?

A: The SN74F573DW is classified as Last Time Buy. For new designs requiring long-term component availability, the SN74F573DWR (Active status) is the appropriate selection.

Q: What is the difference between SN74F573DW and SN74F573DWR?

A: Both parts are functionally identical. The primary difference is packaging format: SN74F573DW is supplied in Tube packaging, while SN74F573DWR is supplied in Tape & Reel format. Product status differs, with SN74F573DWR classified as Active and SN74F573DW as Last Time Buy.

Q: Will the package width difference (5.30mm versus 7.50mm) affect my PCB design?

A: Package width differences require PCB layout verification. The 20-SOIC footprint remains consistent, but the physical component width varies. Confirm that existing PCB designs accommodate the wider 7.50mm package dimension before substitution.

Q: Are both substitute parts ROHS compliant?

A: Yes. Both SN74F573DW and SN74F573DWR are ROHS3 compliant, meeting environmental and regulatory requirements for current manufacturing standards.