74VHCT240AN Equivalent & Substitute Parts

Part Overview

The 74VHCT240AN is an inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The 74VHCT240AN operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-DIP package suitable for through-hole mounting applications.

Substiute Parts

74VHCT240AN

onsemiIn Stock: 70574VHCT240AN Datasheet

Current PartRFQ

SN74AHCT240N

Texas InstrumentsIn Stock: 4243SN74AHCT240N Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74VHCT240AN are qualified based on the following critical parameters:

• Logic Type: Buffer, Inverting (functional equivalence)
• Number of Elements: 2 (circuit topology match)
• Number of Bits per Element: 4 (data width equivalence)
• Output Type: 3-State (control capability match)
• Current - Output High, Low: 8mA, 8mA (drive capability equivalence)
• Voltage - Supply: 4.5V ~ 5.5V (power supply compatibility)
• Package / Case: 20-DIP (0.300", 7.62mm) (physical and electrical pin compatibility)
• Mounting Type: Through Hole (assembly process compatibility)

The SN74AHCT240N from Texas Instruments meets all these substitution criteria, providing functional and electrical equivalence with enhanced product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The SN74AHCT240N is the qualified substitute for the 74VHCT240AN based on electrical and functional equivalence across all critical parameters. The SN74AHCT240N offers the following advantages:

• Active product status ensures ongoing availability and manufacturing support
• Extended operating temperature range (-40°C ~ 125°C) provides broader environmental compatibility compared to the 74VHCT240AN (-40°C ~ 85°C)
• ROHS3 compliance meets current regulatory requirements for electronic components
• Identical electrical specifications and package configuration enable direct pin-for-pin replacement

Both components maintain REACH Unaffected status and share identical ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the SN74AHCT240N directly replace the 74VHCT240AN in existing designs?

A: Yes. The SN74AHCT240N provides pin-for-pin compatibility and identical electrical specifications for all critical parameters including logic type, element count, bit width, output type, drive current, and supply voltage range.

Q: What is the primary difference between these two parts?

A: The SN74AHCT240N has an extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 85°C) and active product status, whereas the 74VHCT240AN is obsolete. Both parts are electrically equivalent for standard applications.

Q: Are there any compliance differences between the two parts?

A: The SN74AHCT240N is ROHS3 compliant, while the 74VHCT240AN compliance status is not specified. Both maintain REACH Unaffected status.

Q: Is the 20-DIP package identical for both parts?

A: Yes. Both parts use the 20-DIP (0.300", 7.62mm) package with through-hole mounting, ensuring mechanical and electrical compatibility on PCBs designed for either component.

Q: What inventory considerations should be evaluated?

A: The 74VHCT240AN has 657 pieces in stock (obsolete status), while the SN74AHCT240N has 4220 pieces available (active status), providing greater supply chain reliability for ongoing production.