74LVC240AD,112 Equivalent & Substitute Parts

Part Overview

The 74LVC240AD,112 is a Buffer, Inverting logic IC manufactured by Nexperia USA Inc., featuring 2 elements with 4 bits per element and 3-state output capability. This component operates across a supply voltage range of 1.2V to 3.6V and is housed in a 20-SOIC package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

74LVC240AD,112

Nexperia USA Inc.In Stock: 118574LVC240AD,112 Datasheet

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MC74LCX240DWR2G

onsemiIn Stock: 2487MC74LCX240DWR2G Datasheet

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SN74LVC240ADW

Texas InstrumentsIn Stock: 3094SN74LVC240ADW Datasheet

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SN74LVC240ADWR

Texas InstrumentsIn Stock: 2183SN74LVC240ADWR Datasheet

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SN74LVCZ240ADW

Texas InstrumentsIn Stock: 1565SN74LVCZ240ADW Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74LVC240AD,112 is determined by the following critical parameters:

• Logic Type: Buffer, Inverting (must match exactly)
• Number of Elements: 2 (must match exactly)
• Number of Bits per Element: 4 (must match exactly)
• Output Type: 3-State (must match exactly)
• Current - Output High, Low: 24mA, 24mA (must match exactly)
• Package / Case: 20-SOIC (0.295", 7.50mm Width) (must match exactly)
• Mounting Type: Surface Mount (must match exactly)

Substitute parts must maintain compatibility within the specified electrical and mechanical parameters. Voltage supply ranges and operating temperature ranges may vary within acceptable limits for specific applications, provided the substitute part's range encompasses the design requirements.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and are classified as active products, ensuring long-term availability and supply chain stability. The SN74LVC240ADW and SN74LVC240ADWR from Texas Instruments offer the broadest operating temperature range (-40°C to 125°C) matching the original part, with supply voltage ranges of 1.65V to 3.6V. Both parts are available in different packaging formats (Tube and Cut Tape & Digi-Reel respectively) to accommodate various procurement requirements.

The SN74LVCZ240ADW from Texas Instruments operates within a narrower voltage range (2.7V to 3.6V) and temperature range (-40°C to 85°C), suitable for applications not requiring the full 1.2V minimum supply voltage or extended upper temperature operation.

The MC74LCX240DWR2G from onsemi provides an alternative from a different manufacturer, with a voltage range of 2V to 3.6V and operating temperature range of -40°C to 85°C. This part carries an MSL rating of 3 (168 Hours), requiring controlled moisture exposure during storage and handling compared to the MSL 1 rating of other substitutes.

Frequently Asked Questions (FAQ)

Q: Can the SN74LVC240ADW directly replace the 74LVC240AD,112?

A: Yes. Both parts share identical logic type, element count, bit configuration, output type, output current specifications, and 20-SOIC package dimensions. The SN74LVC240ADW operates across 1.65V to 3.6V supply voltage and -40°C to 125°C temperature range, encompassing the design requirements of the original part.

Q: What is the difference between SN74LVC240ADW and SN74LVC240ADWR?

A: Both parts are electrically identical Texas Instruments 74LVC240 buffer inverters with matching specifications. The primary difference is packaging format: SN74LVC240ADW is supplied in Tube packaging, while SN74LVC240ADWR is supplied in Cut Tape & Digi-Reel format. Selection depends on procurement volume and assembly line requirements.

Q: Why does the MC74LCX240DWR2G have a different MSL rating?

A: The MC74LCX240DWR2G carries an MSL rating of 3 (168 Hours), indicating it requires moisture control during storage and handling for up to 168 hours before soldering. The other substitutes carry MSL 1 (Unlimited), allowing indefinite storage without moisture control. This affects handling procedures but does not impact electrical performance.

Q: Are there voltage supply range limitations when substituting?

A: The substitute parts operate at minimum supply voltages of 1.65V to 2.7V, compared to the original part's 1.2V minimum. If your design requires operation below 1.65V, only the original 74LVC240AD,112 specification is suitable. For applications operating at 1.65V or above, all listed substitutes are compatible.

Q: Does operating temperature range affect substitution suitability?

A: The SN74LVC240ADW and SN74LVC240ADWR maintain the full -40°C to 125°C operating range of the original part. The SN74LVCZ240ADW and MC74LCX240DWR2G operate to 85°C maximum. If your application requires operation above 85°C, select the Texas Instruments 74LVC series parts. For applications limited to 85°C or below, all substitutes are suitable.

Q: Is the 20-SOIC package identical across all parts?

A: Yes. All parts use the 20-SOIC package with 0.295" width and 7.50mm body width, ensuring mechanical and electrical compatibility on the same PCB footprint without layout modifications.