74LVC373AT20-13 Equivalent & Substitute Parts

Part Overview

The 74LVC373AT20-13 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 with ROHS3 compliance and is suitable for digital logic applications requiring transparent latch functionality with controlled output impedance.

Equivalent and substitute parts are identified based on matching functional logic type, circuit configuration, output characteristics, and package specifications. Alternative sources and variants are necessary for supply chain flexibility, inventory availability, and design optimization across different operating temperature ranges and propagation delay requirements.

Key Parameters

Parameter	Value
Logic Type	D-Type Transparent Latch
Circuit Configuration	8:8
Output Type	Tri-State
Supply Voltage Range	1.65V ~ 3.6V
Independent Circuits	1
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Output Current (High/Low)	24mA / 24mA
Operating Temperature Range	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 74LVC373AT20-13 are classified based on the following substitution criteria:

Parametric Equivalents maintain identical electrical specifications including supply voltage range (1.65V ~ 3.6V), propagation delay (4.4ns), output current ratings (24mA), and operating temperature range (-40°C ~ 125°C). These parts are functionally interchangeable with the main part number.

Direct Substitutes share the same logic type, circuit configuration (8:8), output type (tri-state), and package specification (20-TSSOP), but may differ in supply voltage range (2V ~ 3.6V), propagation delay (1.5ns), or operating temperature range (-40°C ~ 85°C). These parts require design verification for specific application constraints.

Key parameters determining substitution eligibility:

Logic Type: D-Type Transparent Latch
Circuit Configuration: 8:8
Output Type: Tri-State
Package: 20-TSSOP Surface Mount
Output Current: 24mA (High and Low)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Supply Voltage	Propagation Delay	Operating Temperature	Packaging	Product Status	RoHS Status
74LVC373AT20-13	Diodes Incorporated	74LVC	1.65V ~ 3.6V	4.4ns	-40°C ~ 125°C	Tape & Reel	Active	ROHS3
74LVC573AT20-13	Diodes Incorporated	74LVC	1.65V ~ 3.6V	4.4ns	-40°C ~ 125°C	Tape & Reel	Active	ROHS3
74LCX373MTC	Fairchild Semiconductor	74LCX	2V ~ 3.6V	1.5ns	-40°C ~ 85°C	Bulk	Active	Not Specified
MC74LCX373DTR2G	onsemi	74LCX	2V ~ 3.6V	1.5ns	-40°C ~ 85°C	Tape & Reel	Active	ROHS3
SN74LVC373APWR	Texas Instruments	74LVC	1.65V ~ 3.6V	1.5ns	-40°C ~ 85°C	Tape & Reel	Active	ROHS3

Engineering Selection Recommendations

74LVC573AT20-13 (Diodes Incorporated) is a parametric equivalent suitable for direct replacement in applications requiring the full -40°C to 125°C operating temperature range and 1.65V minimum supply voltage. This part maintains identical electrical performance and RoHS3 compliance.

SN74LVC373APWR (Texas Instruments) is suitable for applications operating within -40°C to 85°C temperature range. This part maintains the 1.65V ~ 3.6V supply voltage specification and offers improved propagation delay (1.5ns). RoHS3 compliance is confirmed.

MC74LCX373DTR2G (onsemi) is suitable for applications with supply voltage minimum of 2V and operating temperature range limited to -40°C to 85°C. This part offers improved propagation delay (1.5ns) and RoHS3 compliance with MSL Level 1 rating.

74LCX373MTC (Fairchild Semiconductor) is suitable for applications with supply voltage minimum of 2V and operating temperature range limited to -40°C to 85°C. This part offers improved propagation delay (1.5ns) but is supplied in bulk packaging rather than tape and reel format.

Selection should be based on specific application requirements for supply voltage range, operating temperature range, propagation delay performance, and packaging format.

Frequently Asked Questions (FAQ)

Q: Can 74LVC573AT20-13 replace 74LVC373AT20-13 directly? A: Yes. Both parts share identical electrical specifications including supply voltage range (1.65V ~ 3.6V), propagation delay (4.4ns), output current (24mA), and operating temperature range (-40°C ~ 125°C). Both are housed in 20-TSSOP packages and maintain ROHS3 compliance.

Q: What are the limitations when using 74LCX373MTC or MC74LCX373DTR2G as substitutes? A: These 74LCX series parts have a minimum supply voltage of 2V (versus 1.65V for the main part) and a reduced operating temperature range of -40°C to 85°C (versus -125°C for the main part). Applications requiring operation below 2V supply voltage or above 85°C are not suitable for these substitutes.

Q: Does SN74LVC373APWR offer performance advantages? A: SN74LVC373APWR provides improved propagation delay of 1.5ns compared to 4.4ns for the main part. However, the operating temperature range is limited to -40°C to 85°C. This part maintains the 1.65V ~ 3.6V supply voltage specification.

Q: Are all substitute parts available in tape and reel packaging? A: No. 74LCX373MTC is supplied in bulk packaging. All other substitutes (74LVC573AT20-13, MC74LCX373DTR2G, and SN74LVC373APWR) are available in tape and reel format suitable for automated assembly.

Q: What is the significance of MSL rating differences? A: MC74LCX373DTR2G carries MSL Level 1 (Unlimited), while 74LVC373AT20-13 carries MSL Level 3 (168 Hours). MSL Level 1 indicates lower moisture sensitivity and extended shelf life without baking requirements.

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