54FCT240CTDB Equivalent & Substitute Parts

Part Overview

The 54FCT240CTDB is an inverting buffer logic IC manufactured by Renesas Electronics Corporation, configured as a 2-element, 4-bit per element buffer with 3-state output capability. This device operates across the 4.5V to 5.5V supply voltage range and is housed in a 20-CDIP package suitable for through-hole mounting applications.

The 54FCT240CTDB carries an obsolete product status. Locating equivalent substitute parts is necessary for system maintenance, repair, and legacy design support where original components are no longer readily available or where design refresh is required.

Substiute Parts

54FCT240CTDB

Renesas Electronics CorporationIn Stock: 120054FCT240CTDB Datasheet

Current PartRFQ

M38510/38301BRA

Texas InstrumentsIn Stock: 1158M38510/38301BRA Datasheet

Parametric EquivalentRFQ

SN54F240J

Texas InstrumentsIn Stock: 815SN54F240J Datasheet

Parametric EquivalentRFQ

SNJ54BCT240J

Texas InstrumentsIn Stock: 1265SNJ54BCT240J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 54FCT240CTDB are qualified based on the following electrical and mechanical parameters:

• Logic function: Buffer, Inverting configuration
• Element and bit configuration: 2 elements, 4 bits per element
• Output architecture: 3-State output capability
• Output current specifications: 12mA high, 48mA low
• Supply voltage range: 4.5V ~ 5.5V
• Operating temperature range: -55°C ~ 125°C
• Physical package: 20-CDIP with identical 0.300" (7.62mm) pitch
• Mounting method: Through-hole compatibility

All identified substitutes maintain these core parameters, ensuring functional and mechanical interchangeability within the specified operating conditions.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—M38510/38301BRA, SN54F240J, and SNJ54BCT240J—provide complete parametric equivalence to the 54FCT240CTDB across all critical electrical and mechanical specifications.

M38510/38301BRA and SN54F240J both carry active product status and ROHS3 compliance certification, making them suitable for new designs and systems requiring current regulatory compliance. These parts are available in production quantities and represent the preferred selection path for applications where compliance documentation is required.

SNJ54BCT240J maintains active product status and provides functional equivalence. Selection among the three substitutes should be based on availability, supply chain considerations, and specific compliance requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can the 54FCT240CTDB be directly replaced with any of these substitute parts?

A: Yes. All three substitute parts maintain identical electrical parameters (logic function, output current, supply voltage, operating temperature) and physical packaging (20-CDIP through-hole). Direct pin-for-pin substitution is supported without circuit modification.

Q: What is the primary reason the 54FCT240CTDB is obsolete?

A: The 54FCT240CTDB carries obsolete product status from Renesas Electronics. The substitute parts from Texas Instruments (SN54F240J, M38510/38301BRA, SNJ54BCT240J) remain in active production and provide equivalent functionality.

Q: Are there compliance differences between the original and substitute parts?

A: Yes. The original 54FCT240CTDB is RoHS non-compliant. The substitutes M38510/38301BRA and SN54F240J are ROHS3 compliant, making them suitable for applications requiring environmental compliance certification.

Q: Does package compatibility extend to PCB layout?

A: Yes. All parts use the 20-CDIP package with 0.300" (7.62mm) pitch and through-hole mounting. PCB footprints and hole spacing are identical, requiring no layout modifications.

Q: What inventory status should be considered when selecting a substitute?

A: Current inventory levels are: 54FCT240CTDB (1093 pcs), M38510/38301BRA (1068 pcs), SN54F240J (752 pcs), and SNJ54BCT240J (1203 pcs). All parts are available in production quantities.