74ABT573CSJ Equivalent & Substitute Parts

Part Overview

The 74ABT573CSJ is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring 1 channel with 8:8 configuration and tri-state output capability. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. 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

74ABT573CSJ

onsemiIn Stock: 75674ABT573CSJ Datasheet

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SN74ABT573ADW

Texas InstrumentsIn Stock: 2405SN74ABT573ADW Datasheet

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SN74ABT573ADWR

Texas InstrumentsIn Stock: 11745SN74ABT573ADWR Datasheet

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SN74ABT573ANSR

Texas InstrumentsIn Stock: 711SN74ABT573ANSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74ABT573CSJ are qualified based on the following electrical and mechanical parameters:

Core Compatibility Criteria:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Supply Voltage Range: 4.5V ~ 5.5V
• Independent Circuits: 1
• Output Current Ratings: 32mA (High), 64mA (Low)
• Operating Temperature Range: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Base Product Number: 74ABT573

The substitute parts listed below meet all core electrical specifications. Package variations (20-SOIC vs. 20-SOP) are noted as they may affect board layout and assembly considerations, though both are surface mount configurations with compatible pin counts and electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

SN74ABT573ADW (Texas Instruments) - Tube Packaging

This part is actively manufactured and available in tube packaging. It meets all electrical specifications required for 74ABT573CSJ substitution. The propagation delay of 4ns is within acceptable tolerance for most applications. The package width of 0.295" (7.50mm) differs from the original 0.209" (5.30mm), requiring PCB layout verification. ROHS3 compliance supports modern manufacturing and environmental standards.

SN74ABT573ADWR (Texas Instruments) - Cut Tape & Digi-Reel Packaging

This variant is actively manufactured with the highest inventory availability (11,670 pcs). Electrical specifications are identical to SN74ABT573ADW. The Cut Tape and Digi-Reel packaging format supports automated assembly processes. Package dimensions match SN74ABT573ADW. ROHS3 compliance and REACH Unaffected status confirm regulatory alignment.

SN74ABT573ANSR (Texas Instruments) - Discontinued Status

This part features the original package width of 0.209" (5.30mm), matching the 74ABT573CSJ footprint precisely. However, it is discontinued at DiGi Electronics, limiting long-term availability. Selection of this part should be evaluated against supply chain continuity requirements. ROHS3 compliance is confirmed.

For new designs and ongoing production, SN74ABT573ADWR is recommended due to active manufacturing status and superior inventory availability, provided PCB layout accommodates the wider 0.295" package dimension.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT573ADW and SN74ABT573ADWR be used interchangeably with 74ABT573CSJ?

A: Both parts meet all electrical specifications (logic type, circuit configuration, output type, supply voltage, output current, operating temperature, and propagation delay tolerance). The primary consideration is package width: both Texas Instruments parts measure 0.295" (7.50mm) versus the original 0.209" (5.30mm). PCB layout must be verified to accommodate this difference. Electrically, they are direct substitutes.

Q: What is the difference between SN74ABT573ADW and SN74ABT573ADWR?

A: Both parts are electrically identical and manufactured by Texas Instruments. The difference is packaging format: SN74ABT573ADW is supplied in tube packaging, while SN74ABT573ADWR is supplied in Cut Tape and Digi-Reel format. SN74ABT573ADWR is preferred for automated assembly processes and offers significantly higher inventory availability (11,670 pcs vs. 2,316 pcs).

Q: Why does SN74ABT573ANSR have a different product status?

A: SN74ABT573ANSR is discontinued at DiGi Electronics, indicating limited future availability. While it offers the advantage of matching the original 0.209" package width, supply chain continuity cannot be assured. For new designs, SN74ABT573ADW or SN74ABT573ADWR are preferred due to active manufacturing status.

Q: Are there propagation delay differences between the original and substitute parts?

A: The 74ABT573CSJ specifies 2.7ns propagation delay, while all Texas Instruments substitutes specify 4ns. This 1.3ns difference is within typical logic circuit tolerances and does not affect functional compatibility in standard applications. Applications with critical timing requirements should verify this specification against system timing margins.

Q: Do the substitute parts meet RoHS and REACH compliance?

A: All Texas Instruments substitute parts (SN74ABT573ADW, SN74ABT573ADWR, SN74ABT573ANSR) are ROHS3 compliant and REACH Unaffected. The original 74ABT573CSJ does not specify RoHS status but is REACH Unaffected. Modern designs should prioritize ROHS3-compliant substitutes.

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

A: All parts, including the original 74ABT573CSJ and all substitutes, have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements. Standard handling procedures are sufficient.