74LVC540AT20-13 Equivalent & Substitute Parts

Part Overview

The 74LVC540AT20-13 is an inverting buffer logic IC manufactured by Diodes Incorporated, designed for 3-state output applications in low-voltage digital systems. This 20-TSSOP surface mount device operates across a supply voltage range of 1.65V to 3.6V and is classified as Active product status. The device integrates one inverting buffer element with 8 bits per element, delivering 24mA output current capability in both high and low states. Substitute parts are necessary to address supply chain availability, alternative packaging preferences, or specific compliance requirements while maintaining functional and electrical compatibility.

Substiute Parts

74LVC540AT20-13

Diodes IncorporatedIn Stock: 3319074LVC540AT20-13 Datasheet

Current PartRFQ

74LVC540AT20-13

Diodes IncorporatedIn Stock: 3319074LVC540AT20-13 Datasheet

Parametric EquivalentRFQ

74LCX540MTC

Fairchild SemiconductorIn Stock: 381474LCX540MTC Datasheet

DirectRFQ

MC74LCX540DTR2G

onsemiIn Stock: 5598MC74LCX540DTR2G Datasheet

DirectRFQ

SN74LVC540APWR

Texas InstrumentsIn Stock: 3995SN74LVC540APWR Datasheet

Parametric EquivalentRFQ

SN74LVC540APWT

Texas InstrumentsIn Stock: 5591SN74LVC540APWT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC540AT20-13 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Logic Type: Buffer, Inverting (1 element, 8 bits per element)
• Output Type: 3-State
• Output Current: 24mA (both high and low)
• Package: 20-TSSOP form factor
• Mounting: Surface Mount

Voltage and Temperature Considerations: The 74LVC540AT20-13 operates at 1.65V ~ 3.6V supply voltage with a temperature range of -40°C ~ 125°C. Substitute parts from the 74LCX series operate at 2V ~ 3.6V with a reduced temperature range of -40°C ~ 85°C. These differences represent functional constraints that must be evaluated against application requirements.

Packaging and Compliance: All substitute parts maintain the 20-TSSOP package specification. RoHS3 compliance and REACH unaffected status are consistent across all listed alternatives. Moisture Sensitivity Level (MSL) varies between parts and should be considered for storage and handling protocols.

Parameter Comparison

Engineering Selection Recommendations

74LVC Series (Diodes Incorporated and Texas Instruments): The 74LVC540AT20-13, SN74LVC540APWT, and SN74LVC540APWR maintain identical electrical specifications with supply voltage range of 1.65V ~ 3.6V and operating temperature of -40°C ~ 125°C. These parts are fully interchangeable from a functional perspective. Selection between them is determined by packaging preference (Tape & Reel versus Cut Tape & Digi-Reel) and MSL requirements. Texas Instruments variants offer MSL 1 (Unlimited) compared to Diodes Incorporated MSL 3 (168 Hours), providing superior moisture tolerance for extended storage.

74LCX Series (onsemi and Fairchild Semiconductor): The MC74LCX540DTR2G and 74LCX540MTC operate at reduced supply voltage (2V ~ 3.6V minimum) and narrower temperature range (-40°C ~ 85°C). These parts are suitable for applications where the lower voltage floor and reduced temperature range do not present constraints. The 74LCX540MTC is supplied in Bulk packaging, which may not be suitable for automated assembly processes requiring tape and reel format.

Compliance and Product Status: All listed parts maintain Active product status and ROHS3 compliance. REACH unaffected status is consistent across all alternatives. Selection should prioritize parts with MSL 1 rating for applications requiring extended shelf life or storage in high-humidity environments.

Frequently Asked Questions (FAQ)

Q: Can the 74LCX540MTC replace the 74LVC540AT20-13 in all applications?

A: The 74LCX540MTC is functionally equivalent in logic operation and output current specifications. However, it operates at a minimum supply voltage of 2V compared to 1.65V for the 74LVC540AT20-13, and its maximum operating temperature is 85°C versus 125°C. Substitution is valid only if the application operates within 2V ~ 3.6V supply voltage and -40°C ~ 85°C temperature range. Additionally, the Bulk packaging format may not be compatible with automated assembly processes.

Q: What is the difference between the Texas Instruments SN74LVC540APWT and SN74LVC540APWR?

A: Both parts are electrically identical with identical supply voltage (1.65V ~ 3.6V) and temperature range (-40°C ~ 125°C). The primary difference is packaging format: SN74LVC540APWT is supplied in Tape & Reel (TR) format, while SN74LVC540APWR is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on assembly equipment compatibility and procurement preferences.

Q: Why does the 74LCX540MTC have no MSL specification listed?

A: MSL (Moisture Sensitivity Level) specification is not provided in the available data for the 74LCX540MTC. This information should be obtained from the manufacturer's datasheet before use in applications with specific moisture sensitivity requirements or extended storage periods.

Q: Are all substitute parts RoHS3 compliant?

A: The 74LVC540AT20-13, SN74LVC540APWT, SN74LVC540APWR, and MC74LCX540DTR2G are explicitly listed as ROHS3 Compliant. The 74LCX540MTC RoHS status is not specified in the provided data and should be verified with the manufacturer.

Q: Can I use the MC74LCX540DTR2G in a circuit designed for 1.65V operation?

A: No. The MC74LCX540DTR2G has a minimum supply voltage specification of 2V, which exceeds the 1.65V lower limit of the 74LVC540AT20-13. Operation below the specified minimum voltage may result in unpredictable device behavior. Use only within the specified 2V ~ 3.6V range.