74LVC573AT20-13 Equivalent & Substitute Parts

Part Overview

The 74LVC573AT20-13 is a D-Type Transparent Latch logic IC manufactured by Diodes Incorporated, featuring an 8:8 circuit configuration with tri-state output capability. This component operates across a supply voltage range of 1.65V to 3.6V and is housed in a 20-TSSOP surface mount package. The part maintains Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, manufacturer availability, or specific performance characteristics within defined electrical and mechanical parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LVC573AT20-13
Manufacturer	Diodes Incorporated
Logic Type	D-Type Transparent Latch
Circuit Configuration	8:8
Output Type	Tri-State
Voltage - Supply	1.65V ~ 3.6V
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 125°C
Current - Output High, Low	24mA, 24mA
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the 74LVC573AT20-13 are classified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Substitution Criteria:

Logic Type: D-Type Transparent Latch
Circuit Configuration: 8:8
Output Type: Tri-State
Package / Case: 20-TSSOP surface mount
Supply Voltage Range: Minimum 1.65V to 3.6V
Current Output Capability: 24mA high and low
RoHS Compliance: ROHS3 Compliant

Parametric Equivalent: The 74LVC373AT20-13 (Diodes Incorporated) matches all primary electrical and mechanical parameters, including identical supply voltage range, output current specifications, and package configuration.

Direct Manufacturer Alternatives: The MC74LCX573DTR2G (onsemi) and SN74LVC573APWR (Texas Instruments) provide functional equivalence with variations in propagation delay and operating temperature ranges, while maintaining the required 20-TSSOP package and tri-state output characteristics.

Parameter Comparison

Parameter	74LVC573AT20-13 (Main)	74LVC373AT20-13	MC74LCX573DTR2G	SN74LVC573APWR
Manufacturer	Diodes Incorporated	Diodes Incorporated	onsemi	Texas Instruments
Logic Type	D-Type Transparent Latch	D-Type Transparent Latch	D-Type Transparent Latch	D-Type Transparent Latch
Circuit Configuration	8:8	8:8	8:8	8:8
Output Type	Tri-State	Tri-State	Tri-State	Tri-State
Voltage - Supply	1.65V ~ 3.6V	1.65V ~ 3.6V	2V ~ 3.6V	1.65V ~ 3.6V
Delay Time - Propagation	4.4ns	4.4ns	1.5ns	2ns
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 85°C
Package / Case	20-TSSOP	20-TSSOP	20-TSSOP	20-TSSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original 74LVC573AT20-13 specification.

The 74LVC373AT20-13 provides direct parametric equivalence with identical electrical characteristics and supply voltage range, making it suitable for direct substitution in applications where component sourcing from Diodes Incorporated is required.

The MC74LCX573DTR2G offers improved propagation delay performance (1.5ns versus 4.4ns) and extended lower operating temperature range (-55°C), with the trade-off of a minimum supply voltage of 2V rather than 1.65V. This part is appropriate for applications requiring faster switching characteristics or broader temperature operating margins.

The SN74LVC573APWR maintains supply voltage compatibility (1.65V ~ 3.6V) with improved propagation delay (2ns) and is sourced from Texas Instruments. The operating temperature upper limit is 85°C, which is lower than the main part specification of 125°C. This part is suitable for applications within the -40°C to 85°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 74LVC373AT20-13 be used as a direct replacement for the 74LVC573AT20-13?

A: Yes. Both parts share identical electrical parameters including supply voltage range (1.65V ~ 3.6V), output current (24mA), propagation delay (4.4ns), operating temperature range (-40°C ~ 125°C), and 20-TSSOP package configuration. Both are manufactured by Diodes Incorporated and maintain ROHS3 compliance.

Q: What are the key differences between the MC74LCX573DTR2G and the original 74LVC573AT20-13?

A: The MC74LCX573DTR2G features faster propagation delay (1.5ns versus 4.4ns) and extended lower temperature operation (-55°C versus -40°C). The minimum supply voltage is 2V instead of 1.65V. All other parameters including output current, package type, and tri-state configuration remain equivalent.

Q: Is the SN74LVC573APWR suitable for applications requiring operation above 85°C?

A: No. The SN74LVC573APWR has a maximum operating temperature of 85°C, whereas the original 74LVC573AT20-13 operates to 125°C. For applications requiring the full temperature range, use the 74LVC373AT20-13 or MC74LCX573DTR2G.

Q: Are all substitute parts available in the same 20-TSSOP package?

A: Yes. All listed substitute parts are housed in the 20-TSSOP (0.173", 4.40mm Width) surface mount package, ensuring mechanical compatibility with existing PCB layouts.

Q: Do all substitute parts meet ROHS3 compliance?

A: Yes. The 74LVC373AT20-13, MC74LCX573DTR2G, and SN74LVC573APWR are all ROHS3 compliant, maintaining regulatory alignment with the original specification.

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