74VHC240N Equivalent & Substitute Parts

Part Overview

The 74VHC240N is a Buffer, Inverting logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This component operates across a supply voltage range of 2V to 5.5V and is housed in a 20-DIP package suitable for through-hole mounting applications. The product is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

74VHC240N

onsemiIn Stock: 122274VHC240N Datasheet

Current PartRFQ

SN74AHC240N

Texas InstrumentsIn Stock: 1627SN74AHC240N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74VHC240N is determined by strict equivalence across the following critical parameters:

• Logic Type: Buffer, Inverting configuration
• Element and Bit Configuration: 2 elements, 4 bits per element
• Output Architecture: 3-State output
• Output Current Specifications: 8mA high and low
• Supply Voltage Range: 2V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Physical Package: 20-DIP form factor with 0.300" (7.62mm) pitch
• Through-hole mounting compatibility

The SN74AHC240N from Texas Instruments meets all these parameters and qualifies as a parametric equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The SN74AHC240N is a direct parametric substitute for the 74VHC240N. Both components share identical electrical specifications, output characteristics, and physical packaging. The primary distinction is product status: the 74VHC240N is obsolete while the SN74AHC240N remains in active production. The SN74AHC240N additionally carries ROHS3 compliance certification, providing enhanced environmental and regulatory alignment for new designs and long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the SN74AHC240N replace the 74VHC240N in existing designs?

A: Yes. Both parts are parametrically equivalent across all critical specifications including logic function, output configuration, current ratings, voltage range, temperature operating range, and 20-DIP package dimensions. Direct substitution is supported without circuit modification.

Q: Are there differences in the 74VHC and 74AHC series designations?

A: The series designation reflects the manufacturer (onsemi for 74VHC, Texas Instruments for 74AHC). The functional and electrical characteristics remain equivalent for this specific part number comparison.

Q: What is the significance of the SN74AHC240N being in active production?

A: Active product status ensures ongoing availability, established supply chains, and manufacturer support. This is particularly relevant given the obsolete status of the 74VHC240N, making the SN74AHC240N the recommended choice for new procurement and design implementations.

Q: Does the ROHS3 compliance of the SN74AHC240N affect compatibility?

A: ROHS3 compliance indicates adherence to environmental and hazardous substance restrictions. This certification does not impact electrical or mechanical compatibility; it reflects manufacturing and material standards that support regulatory requirements in many markets.

Q: Are the 20-DIP packages physically interchangeable?

A: Yes. Both components use identical 20-DIP packaging with 0.300" (7.62mm) pitch specifications, ensuring mechanical compatibility in through-hole PCB applications without requiring layout modifications.