74LVC573ADB,112 Equivalent & Substitute Parts

Part Overview

The 74LVC573ADB,112 is a D-Type Transparent Latch logic IC manufactured by Nexperia USA Inc., featuring an 8:8 channel configuration with tri-state output in a 20-SSOP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across a supply voltage range of 1.2V to 3.6V with a propagation delay of 1.5ns and output current capability of 24mA for both high and low states.

Key Parameters

Parameter	Value
Manufacturer	Nexperia USA Inc.
Logic Type	D-Type Transparent Latch
Circuit Configuration	8:8
Output Type	Tri-State
Voltage Supply Range	1.2V ~ 3.6V
Propagation Delay	1.5ns
Output Current (High/Low)	24mA / 24mA
Operating Temperature	-40°C ~ 125°C
Package Type	20-SSOP (0.209", 5.30mm Width)
Product Status	Obsolete
RoHS Compliance	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 74LVC573ADB,112 is determined by the following critical parameters: logic type (D-Type Transparent Latch), circuit configuration (8:8), output type (tri-state), and package compatibility. Substitute parts must maintain the same functional behavior and pin configuration. The primary substitution criteria are:

Functional Equivalence: All substitutes must be D-Type Transparent Latch ICs with 8:8 channel configuration and tri-state output
Voltage Compatibility: Supply voltage range must overlap with or exceed the original specification (1.2V ~ 3.6V minimum)
Package Compatibility: Parts are grouped by package type—20-SSOP (same footprint as original) and 20-TSSOP (alternative surface mount package with different pitch)
Electrical Performance: Propagation delay and output current ratings must meet or exceed original specifications
Temperature Range: Operating temperature must support the required application environment
Compliance Status: RoHS3 compliance and regulatory certifications must be maintained

Substitutes are available from both Nexperia and Texas Instruments, with variations in product status (active vs. discontinued) and packaging options.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Circuit	Output Type	Voltage Supply	Prop. Delay	Output Current	Temp. Range	Package	Status
74LVC573ADB,112	Nexperia	D-Type Transparent Latch	8:8	Tri-State	1.2V ~ 3.6V	1.5ns	24mA / 24mA	-40°C ~ 125°C	20-SSOP	Obsolete
74LVC573APW,118	Nexperia	D-Type Transparent Latch	8:8	Tri-State	1.2V ~ 3.6V	1.5ns	24mA / 24mA	-40°C ~ 125°C	20-TSSOP	Active
SN74LV573ADBR	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	2V ~ 5.5V	1ns	16mA / 16mA	-40°C ~ 85°C	20-SSOP	Active
SN74LVC573ADBR	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	1.65V ~ 3.6V	2ns	24mA / 24mA	-40°C ~ 85°C	20-SSOP	Active
SN74LVC573ADGVR	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	1.65V ~ 3.6V	2ns	24mA / 24mA	-40°C ~ 85°C	20-TVSOP	Active
SN74LVC573APW	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	1.65V ~ 3.6V	2ns	24mA / 24mA	-40°C ~ 85°C	20-TSSOP	Active
SN74LVC573APWR	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	1.65V ~ 3.6V	2ns	24mA / 24mA	-40°C ~ 85°C	20-TSSOP	Active
SN74LVC573APWRG4	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	1.65V ~ 3.6V	2ns	24mA / 24mA	-40°C ~ 85°C	20-TSSOP	Discontinued at DiGi Electronics
SN74LVC573APWT	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	1.65V ~ 3.6V	2ns	24mA / 24mA	-40°C ~ 85°C	20-TSSOP	Active
SN74LVC573AQPWREP	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	2V ~ 3.6V	1ns	24mA / 24mA	-40°C ~ 125°C	20-TSSOP	Active
SN74LVC573AQPWRQ1	Texas Instruments	D-Type Transparent Latch	8:8	Tri-State	2V ~ 3.6V	1ns	24mA / 24mA	-40°C ~ 125°C	20-TSSOP	Active

Engineering Selection Recommendations

Direct Package Replacement (20-SSOP): The SN74LVC573ADBR from Texas Instruments provides a direct footprint match in the 20-SSOP package. This part maintains the same output current capability (24mA) and operates within a compatible voltage range (1.65V ~ 3.6V), though with a slightly reduced upper temperature limit (-40°C ~ 85°C versus -40°C ~ 125°C). The propagation delay increases to 2ns, which remains acceptable for most applications. This part is currently active and available.

Alternative Package Options (20-TSSOP): For designs that can accommodate a different package footprint, the 74LVC573APW,118 from Nexperia offers the closest electrical match to the original part, maintaining identical voltage range (1.2V ~ 3.6V), propagation delay (1.5ns), and temperature range (-40°C ~ 125°C). Multiple Texas Instruments variants in 20-TSSOP packaging are available, including SN74LVC573APW, SN74LVC573APWR, and SN74LVC573APWT, all with active product status.

Automotive-Grade Option: The SN74LVC573AQPWRQ1 is qualified to AEC-Q100 automotive standards and provides enhanced temperature range support (-40°C ~ 125°C) with 1ns propagation delay and 24mA output current. This part is suitable for applications requiring automotive-grade components.

Lower Voltage Applications: The SN74LV573ADBR operates at 2V ~ 5.5V supply voltage with faster propagation delay (1ns) but reduced output current (16mA). This part is appropriate only if the application requires higher supply voltage tolerance and can accept lower output current specifications.

All substitute parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory continuity.

Frequently Asked Questions (FAQ)

Q: Can I use SN74LVC573ADBR as a direct replacement for 74LVC573ADB,112?

A: Yes, the SN74LVC573ADBR is a direct footprint replacement in the 20-SSOP package. Both parts share identical pin configuration and functional behavior. The main differences are the reduced upper temperature limit (85°C versus 125°C) and slightly increased propagation delay (2ns versus 1.5ns). Verify that your application's temperature requirements do not exceed -40°C to 85°C.

Q: What is the difference between 20-SSOP and 20-TSSOP packages?

A: Both are surface mount packages with 20 pins, but they differ in pitch and body width. The 20-SSOP has a 0.209" (5.30mm) width, while the 20-TSSOP has a 0.173" (4.40mm) width. These packages are not interchangeable on the same PCB layout. Verify your PCB design accommodates the selected package before substitution.

Q: Why does the 74LVC573APW,118 show a different product status than the original part?

A: The original 74LVC573ADB,112 is obsolete, meaning Nexperia has discontinued production. The 74LVC573APW,118 is the active Nexperia equivalent with identical electrical specifications but in a 20-TSSOP package. This part is currently manufactured and available for new designs.

Q: Can I substitute the SN74LV573ADBR for the 74LVC573ADB,112?

A: The SN74LV573ADBR is functionally equivalent but has different electrical specifications. It operates at 2V ~ 5.5V (versus 1.2V ~ 3.6V), has faster propagation delay (1ns versus 1.5ns), but lower output current (16mA versus 24mA). Use this part only if your application requires higher supply voltage tolerance and can operate with reduced output current.

Q: Which substitute part has the best temperature range coverage?

A: The SN74LVC573AQPWRQ1 and SN74LVC573AQPWREP both support -40°C to 125°C, matching the original part's temperature range. The SN74LVC573AQPWRQ1 is additionally qualified to AEC-Q100 automotive standards.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts are RoHS3 compliant and REACH unaffected, maintaining regulatory compliance with the original part.

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