74ABT2240CSC Equivalent & Substitute Parts

Part Overview

The 74ABT2240CSC is an inverting buffer logic integrated circuit manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 20-SOIC package. The part is currently classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement.

Substiute Parts

74ABT2240CSC

onsemiIn Stock: 102974ABT2240CSC Datasheet

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SN74ABT2240ADW

Texas InstrumentsIn Stock: 1364SN74ABT2240ADW Datasheet

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SN74ABT2240ADWR

Texas InstrumentsIn Stock: 5443SN74ABT2240ADWR Datasheet

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SN74ABT2240ANSR

Texas InstrumentsIn Stock: 2099SN74ABT2240ANSR Datasheet

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SN74ABT240ADW

Texas InstrumentsIn Stock: 2540SN74ABT240ADW Datasheet

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SN74ABT240ADWR

Texas InstrumentsIn Stock: 12587SN74ABT240ADWR Datasheet

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SN74ABT240ANSR

Texas InstrumentsIn Stock: 16174SN74ABT240ANSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74ABT2240CSC is determined by the following critical parameters:

Primary Compatibility Criteria:

• Logic type: Buffer, Inverting
• Number of elements: 2
• Number of bits per element: 4
• Output type: 3-State
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Package type: 20-SOIC or 20-SO (mechanically compatible)
• Mounting type: Surface Mount

Substitute Categories:

Category 1 - Direct Equivalents (74ABT2240 base number, 20-SOIC package):

• SN74ABT2240ADW (Texas Instruments, Tube packaging)
• SN74ABT2240ADWR (Texas Instruments, Tape & Reel packaging)

Category 2 - Package Variant (74ABT2240 base number, 20-SO package):

• SN74ABT2240ANSR (Texas Instruments, Tape & Reel packaging, narrower 20-SO package)

Category 3 - Related Logic Function (74ABT240 base number, different element configuration):

• SN74ABT240ADW (Texas Instruments, Tube packaging)
• SN74ABT240ADWR (Texas Instruments, Cut Tape & Digi-Reel packaging)
• SN74ABT240ANSR (Texas Instruments, Tape & Reel packaging, 20-SO package)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Functional and Electrical Characteristics):

SN74ABT2240ADW and SN74ABT2240ADWR are the primary substitutes for the 74ABT2240CSC. Both are manufactured by Texas Instruments and maintain active product status with ROHS3 compliance. These parts preserve the 20-SOIC package footprint and all critical electrical parameters. The output low current specification differs slightly (12mA versus 15mA), remaining within acceptable logic circuit operating margins. Selection between ADW (Tube) and ADWR (Tape & Reel) depends on procurement volume and assembly requirements.

For Package-Variant Applications:

SN74ABT2240ANSR provides functional equivalence with a narrower 20-SO package (5.30mm width versus 7.50mm). This variant is suitable for space-constrained designs where the reduced package width is compatible with PCB layout. Active product status and ROHS3 compliance are maintained.

For Related Logic Function:

The SN74ABT240 series (ADW, ADWR, ANSR variants) shares identical logic type, element count, and bit configuration but exhibits higher output low current capability (64mA versus 12-15mA). These parts are suitable for applications requiring increased drive capability. All variants maintain active status and ROHS3 compliance.

Compliance and Availability:

All Texas Instruments substitutes carry ROHS3 compliance and REACH Unaffected status, matching the regulatory profile of the original component. Inventory availability ranges from 1,305 to 16,100 units across variants, supporting both prototype and production-volume requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT2240ADW directly replace 74ABT2240CSC in existing designs?

A: Yes. SN74ABT2240ADW maintains identical logic function, package footprint (20-SOIC), supply voltage range (4.5V ~ 5.5V), operating temperature range (-40°C ~ 85°C), and output configuration (3-State). The output low current specification is 12mA compared to the original 15mA, which remains within standard logic circuit operating parameters.

Q: What is the difference between SN74ABT2240ADWR and SN74ABT2240ADW?

A: Both parts are electrically identical. The difference is packaging format: ADWR is supplied in Tape & Reel format suitable for automated assembly, while ADW is supplied in Tube format suitable for manual handling or smaller volume applications.

Q: Can SN74ABT2240ANSR be used as a substitute?

A: SN74ABT2240ANSR is functionally equivalent but uses a narrower 20-SO package (5.30mm width) compared to the standard 20-SOIC package (7.50mm width). Substitution is possible only if the PCB layout accommodates the narrower package footprint. Electrical characteristics and pin configuration remain compatible.

Q: How do the SN74ABT240 variants differ from SN74ABT2240 variants?

A: Both series share identical logic type (Buffer, Inverting), element count (2), and bits per element (4). The primary difference is output low current: SN74ABT240 provides 64mA compared to SN74ABT2240's 12mA. Select SN74ABT240 variants only if increased output drive capability is required by the application.

Q: Are all substitute parts RoHS compliant?

A: Yes. All Texas Instruments substitutes (SN74ABT2240 and SN74ABT240 series) carry ROHS3 compliance certification, matching the regulatory requirements of the original onsemi component.

Q: What packaging options are available for the SN74ABT2240 direct equivalent?

A: SN74ABT2240 is available in two packaging formats: Tube (ADW) and Tape & Reel (ADWR). Both use the standard 20-SOIC package. Selection depends on procurement volume and assembly process requirements.