74ABT573CSJX Equivalent & Substitute Parts

Part Overview

The 74ABT573CSJX is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 channel configuration with tri-state output capability. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. 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

74ABT573CSJX

onsemiIn Stock: 101974ABT573CSJX Datasheet

Current PartRFQ

SN74ABT573ADW

Texas InstrumentsIn Stock: 2405SN74ABT573ADW Datasheet

SimilarRFQ

SN74ABT573ADWR

Texas InstrumentsIn Stock: 11745SN74ABT573ADWR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ABT573CSJX is determined by strict alignment 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
• Independent Circuits: Must maintain 1 independent circuit
• Output Current Specifications: Must support 32mA (high) and 64mA (low) output current
• Operating Temperature Range: Must support -40°C ~ 85°C
• Mounting Type: Must be surface mount compatible
• Series Compatibility: Must belong to the 74ABT logic series

The identified substitute parts meet all these criteria while offering active product status and improved availability compared to the obsolete 74ABT573CSJX.

Parameter Comparison

Engineering Selection Recommendations

Both SN74ABT573ADW and SN74ABT573ADWR are functionally equivalent substitutes for the obsolete 74ABT573CSJX. The Texas Instruments alternatives maintain active product status, ensuring long-term availability and supply chain continuity.

Key Considerations:

• Product Status: The substitute parts are active products from Texas Instruments, providing superior availability compared to the obsolete onsemi part
• Compliance: Both substitutes are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements
• Propagation Delay: The substitute parts specify 4ns propagation delay compared to 2.7ns for the original part. This represents a performance trade-off acceptable for most 74ABT logic applications
• Package Dimensions: The substitute parts use a wider 20-SOIC package (0.295" vs. 0.209" width). PCB layout verification is required to confirm physical compatibility with existing designs
• Packaging Options: SN74ABT573ADW is supplied in tube packaging, while SN74ABT573ADWR is available in cut tape and Digi-Reel format, providing flexibility for different procurement and assembly workflows

Frequently Asked Questions (FAQ)

Q: Can SN74ABT573ADW and SN74ABT573ADWR be used interchangeably with 74ABT573CSJX?

A: Yes, both Texas Instruments parts are functionally equivalent substitutes. They maintain identical logic type, circuit configuration, output type, supply voltage range, output current specifications, and operating temperature range. The primary differences are product status (active vs. obsolete), compliance certifications, and package dimensions.

Q: What is the impact of the 1.3ns difference in propagation delay?

A: The substitute parts specify 4ns propagation delay versus 2.7ns for the original part. This 1.3ns difference is within acceptable tolerances for standard 74ABT logic applications. System timing analysis should be performed if the design operates at the edge of timing margins.

Q: Are there package compatibility concerns?

A: Yes. The substitute parts use a wider 20-SOIC package (0.295" width) compared to the original 20-SOP package (0.209" width). PCB footprint verification is required before implementation. The pin configuration remains identical, but physical board space and routing may require adjustment.

Q: What is the difference between SN74ABT573ADW and SN74ABT573ADWR?

A: Both parts are electrically identical. The difference is in packaging and delivery format. SN74ABT573ADW is supplied in tube packaging, while SN74ABT573ADWR is available in cut tape and Digi-Reel format. Selection depends on assembly process requirements and procurement volume.

Q: Are the substitute parts RoHS compliant?

A: Yes, both SN74ABT573ADW and SN74ABT573ADWR are ROHS3 compliant. The original 74ABT573CSJX does not specify RoHS status. This compliance improvement may be relevant for applications subject to environmental regulations.

Q: What is the moisture sensitivity level for these parts?

A: All three parts, including the original and substitutes, have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage and handling.