74LVC573ADTR2G Equivalent & Substitute Parts

Part Overview

The 74LVC573ADTR2G is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 channel configuration with tri-state, non-inverted output. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part is housed in a 20-TSSOP surface mount package and operates across a supply voltage range of 1.2V to 3.6V with a propagation delay of 1.5ns.

Substiute Parts

74LVC573ADTR2G

onsemiIn Stock: 117874LVC573ADTR2G Datasheet

Current PartRFQ

MC74LCX573DTR2G

onsemiIn Stock: 3438MC74LCX573DTR2G Datasheet

SimilarRFQ

SN74LVC573AQPWREP

Texas InstrumentsIn Stock: 1253SN74LVC573AQPWREP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC573ADTR2G is determined by strict alignment of the following critical parameters:

• Logic Type & Circuit Configuration: All substitutes must be D-Type Transparent Latch devices with 8:8 channel configuration
• Package & Mounting: All substitutes must use 20-TSSOP surface mount packaging with identical physical dimensions
• Output Characteristics: Tri-state output capability is mandatory; non-inverted output is required
• Electrical Performance: Output current capability (24mA minimum for both high and low states) and propagation delay must be met or exceeded
• Supply Voltage Compatibility: Operating voltage range must encompass the application requirements
• Compliance & Certifications: RoHS3 compliance and MSL rating must be maintained

Two active equivalent parts meet these criteria: the MC74LCX573DTR2G (onsemi, 74LCX series) and the SN74LVC573AQPWREP (Texas Instruments, 74LVC series).

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with full RoHS3 compliance and identical MSL ratings, making them suitable for new designs and production continuity.

MC74LCX573DTR2G (onsemi): This substitute maintains the same manufacturer as the original part and operates across an extended lower temperature range (-55°C to 125°C). The 74LCX series provides equivalent electrical performance with matching propagation delay and output current specifications. This option is optimal for designs requiring continuity within the onsemi product ecosystem.

SN74LVC573AQPWREP (Texas Instruments): This substitute is from the same 74LVC series as the original part, ensuring direct functional compatibility. It delivers superior propagation delay performance (1ns versus 1.5ns) while maintaining all other electrical specifications. This option is suitable for applications where faster switching performance is beneficial or where Texas Instruments supply chain integration is preferred.

Both parts are available in active inventory and meet all compliance requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the MC74LCX573DTR2G be used as a direct replacement for the 74LVC573ADTR2G?

A: Yes. Both devices are D-Type Transparent Latch ICs with 8:8 configuration in 20-TSSOP packaging. The MC74LCX573DTR2G meets all electrical requirements with matching output current (24mA) and propagation delay (1.5ns). The extended operating temperature range (-55°C to 125°C) provides additional margin for demanding environments.

Q: What is the difference between the MC74LCX573DTR2G and SN74LVC573AQPWREP?

A: Both are functionally equivalent substitutes. The primary differences are manufacturer (onsemi versus Texas Instruments) and propagation delay (1.5ns versus 1ns). The SN74LVC573AQPWREP offers faster switching performance. Selection depends on supply chain preference and whether the improved delay specification is required for the application.

Q: Are there voltage compatibility concerns when substituting these parts?

A: The original 74LVC573ADTR2G operates at 1.2V to 3.6V. Both substitutes operate at 2V to 3.6V. Applications requiring operation below 2V supply voltage cannot use these substitutes. Verify your minimum supply voltage requirement before selection.

Q: Do all three parts use the same package?

A: Yes. All three parts use the 20-TSSOP surface mount package with identical physical dimensions (0.173" width, 4.40mm). PCB layout and footprints are interchangeable.

Q: Are RoHS and MSL ratings identical across all three parts?

A: Yes. All three parts are ROHS3 compliant with MSL rating of 1 (Unlimited), ensuring equivalent environmental and handling requirements for manufacturing and storage.