74AHCT240PW,118 Equivalent & Substitute Parts

Part Overview

The 74AHCT240PW,118 is an inverting buffer logic integrated circuit manufactured by Nexperia USA Inc. in the 74AHCT series. This device functions as a 2-element, 4-bit inverting buffer with 3-state output capability, housed in a 20-TSSOP surface mount package. The part is currently active in production with 3,622 units in stock.

Substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required, or when automotive-grade qualification is needed for specific applications. The parts listed below maintain electrical and mechanical compatibility with the 74AHCT240PW,118 while offering different manufacturer sources, packaging options, or operational grades.

Substiute Parts

74AHCT240PW,118

Nexperia USA Inc.In Stock: 369974AHCT240PW,118 Datasheet

Current PartRFQ

74AHCT240PW-Q100J

Nexperia USA Inc.In Stock: 571874AHCT240PW-Q100J Datasheet

Parametric EquivalentRFQ

CAHCT240IPWRG4Q1

Texas InstrumentsIn Stock: 2797CAHCT240IPWRG4Q1 Datasheet

SimilarRFQ

MC74VHCT240ADTRG

onsemiIn Stock: 2275MC74VHCT240ADTRG Datasheet

SimilarRFQ

SN74AHCT240PW

Texas InstrumentsIn Stock: 1054SN74AHCT240PW Datasheet

SimilarRFQ

74VHCT240AFT

Toshiba Semiconductor and StorageIn Stock: 570174VHCT240AFT Datasheet

Parametric EquivalentRFQ

SN74AHCT240PWR

Texas InstrumentsIn Stock: 4942SN74AHCT240PWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74AHCT240PW,118 is determined by the following critical parameters:

• Logic Function: Buffer, Inverting with 2 elements and 4 bits per element
• Output Configuration: 3-State output capability
• Electrical Performance: 8mA output current (high and low), 4.5V to 5.5V supply voltage
• Package Compatibility: 20-TSSOP surface mount package with identical physical dimensions
• RoHS Compliance: ROHS3 Compliant status

Substitute parts are grouped into two categories:

Parametric Equivalents maintain all electrical specifications and operating temperature range (-40°C to 125°C) with identical or compatible base product numbers (74AHCT240 or 74VHCT240 series).

Similar Parts maintain core electrical specifications but may differ in operating temperature range (-40°C to 85°C), manufacturer source, packaging format (Tape & Reel vs. Cut Tape), or automotive qualification status (AEC-Q100).

Parameter Comparison

Engineering Selection Recommendations

For Standard Applications with Full Temperature Range Requirements: Select 74AHCT240PW-Q100J (Nexperia, automotive-qualified) or SN74AHCT240PWR (Texas Instruments, standard grade). Both maintain the -40°C to 125°C operating range and are actively produced. The 74AHCT240PW-Q100J offers automotive qualification if required by application standards.

For Automotive Applications: The 74AHCT240PW-Q100J and CAHCT240IPWRG4Q1 both carry AEC-Q100 qualification. The 74AHCT240PW-Q100J maintains the full -40°C to 125°C temperature range, while CAHCT240IPWRG4Q1 operates to -40°C to 85°C. Select based on thermal environment requirements.

For Alternative Manufacturer Sources: 74VHCT240AFT (Toshiba) and MC74VHCT240ADTRG (onsemi) provide equivalent functionality from different manufacturers. The 74VHCT240AFT maintains full temperature range (-40°C to 125°C), while MC74VHCT240ADTRG operates to -40°C to 85°C.

For Packaging Flexibility: SN74AHCT240PWR offers Cut Tape and Digi-Reel packaging as an alternative to standard Tape & Reel format. SN74AHCT240PW is available in Tube packaging but is discontinued at DiGi Electronics and should not be selected for new designs.

Frequently Asked Questions (FAQ)

Q: Can I substitute 74AHCT240PW,118 with 74VHCT240AFT? A: Yes. Both parts maintain identical electrical specifications (8mA output current, 4.5V to 5.5V supply), 3-state output configuration, and full operating temperature range (-40°C to 125°C). The 74VHCT240AFT is from the 74VHCT series (Toshiba) rather than 74AHCT series (Nexperia), but this series designation does not affect functional compatibility for this device class.

Q: What is the difference between 74AHCT240PW-Q100J and the standard 74AHCT240PW,118? A: The 74AHCT240PW-Q100J carries AEC-Q100 automotive qualification and is manufactured to automotive-grade standards. Electrical specifications and operating temperature range are identical. Select the Q100J variant if your application requires automotive qualification documentation.

Q: Why does CAHCT240IPWRG4Q1 have a lower maximum operating temperature (85°C vs. 125°C)? A: CAHCT240IPWRG4Q1 is specified for -40°C to 85°C maximum ambient temperature. This is a design specification from Texas Instruments for this particular part variant. If your application requires operation above 85°C ambient, select an alternative with -40°C to 125°C rating.

Q: Is the 20-TSSOP package identical across all substitute parts? A: Yes. All listed substitute parts use the 20-TSSOP package with 0.173" width and 4.40mm physical dimensions. PCB footprints are interchangeable. Packaging format (Tape & Reel, Cut Tape, or Tube) affects handling and delivery but not board-level compatibility.

Q: Can I use SN74AHCT240PW as a substitute? A: SN74AHCT240PW is discontinued at DiGi Electronics and should not be selected for new designs. Use SN74AHCT240PWR (active, Cut Tape & Digi-Reel packaging) or 74AHCT240PW-Q100J (active, Tape & Reel packaging) instead.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are suitable for lead-free soldering processes.