SC54AC240DWR2G Equivalent & Substitute Parts

Part Overview

The SC54AC240DWR2G is a Logic IC buffer component manufactured by onsemi. This part is classified as obsolete, making it necessary to identify equivalent and substitute components for ongoing design requirements and procurement needs. The SC54AC240DWR2G functions as an Element Bit per Element Output logic buffer, with 1111 pieces currently available in new original stock.

Substiute Parts

SC54AC240DWR2G

onsemiIn Stock: 1174SC54AC240DWR2G Datasheet

Current PartRFQ

MC74AC240DWR2G-Q

onsemiIn Stock: 733MC74AC240DWR2G-Q Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SC54AC240DWR2G is based on the following critical parameters:

• Logic Type: Buffer, Inverting
• Number of Elements: 2
• Number of Bits per Element: 4
• Output Type: 3-State
• Voltage Supply Range: 2V ~ 6V
• Operating Temperature Range: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package Type: 20-SOIC

The recommended substitute MC74AC240DWR2G-Q maintains functional equivalence through identical logic configuration, output characteristics, and electrical specifications. Both components operate within the same voltage and temperature parameters, ensuring direct compatibility in applications requiring buffer inversion with 3-state output capability.

Parameter Comparison

Engineering Selection Recommendations

The MC74AC240DWR2G-Q is the manufacturer-recommended substitute for the obsolete SC54AC240DWR2G. This recommendation is based on active product status and continued availability from onsemi. The substitute maintains the same functional architecture, electrical performance envelope, and physical package specifications required for direct replacement in existing designs.

Additional cross-reference part numbers within the same functional group include MC74AC240DWR2G, 74AC240SCX, and SN74AC240DWR, which share equivalent logic characteristics and may be evaluated based on specific procurement and availability requirements.

Frequently Asked Questions (FAQ)

Q: Can MC74AC240DWR2G-Q directly replace SC54AC240DWR2G in existing designs?

A: Yes. Both components share identical logic configuration (2-element, 4-bit inverting buffer with 3-state output), electrical specifications (2V–6V supply, -40°C to 85°C operating range), and 20-SOIC surface mount packaging. No design modifications are required.

Q: What is the primary reason for substitution?

A: The SC54AC240DWR2G is classified as obsolete. The MC74AC240DWR2G-Q is an active product with ongoing manufacturer support and availability.

Q: Are there other equivalent parts available?

A: Yes. The cross-reference list includes MC74AC240DWR2G, 74AC240SCX, and SN74AC240DWR. These components maintain the same functional specifications and may be selected based on inventory and procurement considerations.

Q: What are the critical parameters for substitution compatibility?

A: Logic type (inverting buffer), element count (2), bits per element (4), output configuration (3-state), supply voltage range (2V–6V), operating temperature range (-40°C to 85°C), and package type (20-SOIC) must remain consistent for functional equivalence.

Q: Is the 20-SOIC package standard across all substitutes?

A: Yes. All recommended substitutes use the 20-SOIC (0.295", 7.50mm Width) surface mount package, ensuring mechanical and electrical compatibility with existing PCB layouts.