74AHCT240PW,112 Equivalent & Substitute Parts

Part Overview

The 74AHCT240PW,112 is an inverting buffer logic IC manufactured by Nexperia USA Inc., designed for 5.5V operation with 2 elements, 4 bits per element, and 3-state output capability in a 20-TSSOP surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The 74AHCT series provides standard logic buffering functionality across multiple manufacturers with compatible electrical and mechanical specifications.

Substiute Parts

74AHCT240PW,112

Nexperia USA Inc.In Stock: 77074AHCT240PW,112 Datasheet

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CAHCT240IPWRG4Q1

Texas InstrumentsIn Stock: 2797CAHCT240IPWRG4Q1 Datasheet

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MC74VHCT240ADTRG

onsemiIn Stock: 2275MC74VHCT240ADTRG Datasheet

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SN74AHCT240PW

Texas InstrumentsIn Stock: 1054SN74AHCT240PW Datasheet

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SN74AHCT240PWR

Texas InstrumentsIn Stock: 4942SN74AHCT240PWR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74AHCT240PW,112 is determined by strict equivalence across the following critical parameters:

• Logic Type: Buffer, Inverting (2 Element, 4 Bit per Element)
• Output Type: 3-State
• Output Current: 8mA High, 8mA Low
• Supply Voltage Range: 4.5V ~ 5.5V
• Package: 20-TSSOP surface mount
• RoHS3 Compliance and MSL Level 1

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in operating temperature range, product status, and manufacturer series (74AHCT vs. 74VHCT) do not affect functional substitution within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74AHCT240PWR (Texas Instruments)

The SN74AHCT240PWR is the preferred substitute for the obsolete 74AHCT240PW,112. This part maintains full electrical and mechanical compatibility while offering active product status with the highest current inventory (4850 Pcs). The extended operating temperature range (-40°C ~ 125°C) matches the original specification, and ROHS3 compliance ensures regulatory alignment. Packaging in Cut Tape and Digi-Reel format supports both prototype and production workflows.

Secondary Recommendation: CAHCT240IPWRG4Q1 (Texas Instruments)

The CAHCT240IPWRG4Q1 provides an automotive-qualified alternative with AEC-Q100 certification, suitable for applications requiring automotive-grade components. Operating temperature is limited to -40°C ~ 85°C, which may restrict use in extended temperature applications. This part is supplied in Tape & Reel packaging and maintains full electrical equivalence.

Alternative: MC74VHCT240ADTRG (onsemi)

The MC74VHCT240ADTRG from onsemi operates within the 74VHCT series rather than 74AHCT, but maintains identical electrical specifications and 20-TSSOP packaging. This part is active with 2240 Pcs inventory and operates across -40°C ~ 85°C. Series designation difference does not affect functional substitution within the specified parameter envelope.

Not Recommended: SN74AHCT240PW (Texas Instruments)

While electrically equivalent, this part is discontinued at DiGi Electronics with lower inventory (966 Pcs) and should not be selected for new designs or ongoing production.

Frequently Asked Questions (FAQ)

Q: Can the 74AHCT240PW,112 be directly replaced with SN74AHCT240PWR?

A: Yes. Both parts share identical logic type, element count, bit configuration, output type, current ratings, supply voltage range, and 20-TSSOP package. The SN74AHCT240PWR is a direct functional equivalent with active product status and superior availability.

Q: What is the difference between 74AHCT and 74VHCT series parts?

A: The 74AHCT and 74VHCT series differ in internal architecture and speed characteristics, but both maintain the same electrical specifications for this buffer application (supply voltage, output current, logic function). Within the specified parameter envelope, both series are functionally equivalent for substitution purposes.

Q: Does operating temperature range affect substitution compatibility?

A: Operating temperature range does not determine substitution compatibility for this part category. The 74AHCT240PW,112 operates -40°C ~ 125°C, while some substitutes operate -40°C ~ 85°C. Selection should be based on application requirements. Parts with extended temperature range (-40°C ~ 125°C) are preferred for applications without temperature restrictions.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited), ensuring regulatory alignment with the original part.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Cut Tape (CT) with Digi-Reel, and Tube. Selection depends on procurement and assembly requirements. All maintain the 20-TSSOP surface mount package specification.

Q: Can automotive-qualified parts be used in non-automotive applications?

A: Yes. The CAHCT240IPWRG4Q1 with AEC-Q100 certification exceeds standard requirements and is suitable for any application within its electrical and temperature specifications. Automotive qualification does not restrict use in non-automotive designs.