SN74LVC240ADWR Equivalent & Substitute Parts

Part Overview

The SN74LVC240ADWR is an inverting buffer logic integrated circuit manufactured by Texas Instruments, designed for 3-state output applications in digital systems. This 20-SOIC surface mount device operates across a supply voltage range of 1.65V to 3.6V and maintains active product status with full RoHS3 compliance. Substitute parts become necessary when addressing supply chain constraints, packaging preferences, or specific operational temperature requirements while maintaining functional and electrical equivalence.

Key Parameters

Parameter	Value
Logic Type	Buffer, Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Current - Output High, Low	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount
Package / Case	20-SOIC (0.295", 7.50mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74LVC240ADWR is determined by the following critical parameters:

Logic configuration: Buffer, Inverting with 2 elements, 4 bits per element
Output architecture: 3-State output capability
Output current capability: 24mA high and low
Package form factor: 20-SOIC surface mount
Supply voltage compatibility: Minimum 1.65V operation required
Operating temperature range: Minimum -40°C to 125°C coverage required
Compliance certifications: RoHS3 status

The identified substitute parts maintain functional equivalence across these core parameters while accommodating variations in supply voltage floor, operating temperature ceiling, packaging format (Tape & Reel vs. Cut Tape), and moisture sensitivity classification.

Parameter Comparison

Parameter	SN74LVC240ADWR (TI)	74LVC240AD,118 (Nexperia)	MC74LCX240DWR2G (onsemi)
Manufacturer	Texas Instruments	Nexperia USA Inc.	onsemi
Logic Type	Buffer, Inverting	Buffer, Inverting	Buffer, Inverting
Number of Elements	2	2	2
Number of Bits per Element	4	4	4
Output Type	3-State	3-State	3-State
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V	1.2V ~ 3.6V	2V ~ 3.6V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	20-SOIC	20-SOIC	20-SOIC
Packaging Format	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)
Product Status	Active	Active	Active

Engineering Selection Recommendations

74LVC240AD,118 (Nexperia USA Inc.) provides direct functional substitution with extended lower supply voltage operation (1.2V floor versus 1.65V) and maintains the full operating temperature range of -40°C to 125°C. This part is available in Tape & Reel packaging and carries MSL 1 classification, matching the moisture sensitivity profile of the primary part. All compliance certifications align with the SN74LVC240ADWR.

MC74LCX240DWR2G (onsemi) maintains functional equivalence across core logic parameters and output specifications. This part operates within a 2V to 3.6V supply range and supports the -40°C to 85°C temperature window. The operating temperature ceiling is reduced by 40°C compared to the primary part. This device carries MSL 3 classification, requiring controlled storage conditions (168-hour maximum floor life). Selection of this substitute is appropriate when the reduced temperature range and moisture sensitivity requirements align with application constraints.

Frequently Asked Questions (FAQ)

Q: Can the 74LVC240AD,118 be used as a direct replacement for the SN74LVC240ADWR?

A: Yes. Both parts share identical logic configuration (2-element, 4-bit inverting buffer with 3-state output), output current ratings (24mA), package form factor (20-SOIC), and operating temperature range (-40°C to 125°C). The Nexperia part extends lower supply voltage operation to 1.2V and maintains MSL 1 moisture sensitivity. Packaging format differs (Tape & Reel versus Cut Tape), which may affect procurement and handling procedures.

Q: What are the limitations of the MC74LCX240DWR2G substitute?

A: The onsemi part operates within a reduced temperature range (-40°C to 85°C maximum, versus 125°C for the primary part) and requires a minimum supply voltage of 2V rather than 1.65V. Moisture sensitivity is classified as MSL 3, requiring storage within 168-hour floor life limits. These constraints must be evaluated against specific application requirements before selection.

Q: Are all three parts pin-compatible?

A: All three parts utilize the 20-SOIC package form factor with identical pinout configuration, enabling direct PCB-level substitution without layout modification.

Q: What compliance certifications apply to all substitute options?

A: All three parts maintain RoHS3 compliance, REACH Unaffected status, and EAR99 export classification. HTSUS code 8542.39.0001 applies uniformly across all options.

Q: How does packaging format affect part selection?

A: The SN74LVC240ADWR is supplied in Cut Tape and Digi-Reel format, while both substitute parts are available in Tape & Reel packaging. Tape & Reel format is standard for automated assembly processes and typically offers cost advantages in high-volume production. Cut Tape format accommodates lower-volume or manual assembly workflows. Functional performance is unaffected by packaging format.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message