74FCT240CTSOG Equivalent & Substitute Parts

Part Overview

The 74FCT240CTSOG is a Buffer, Inverting logic IC manufactured by Renesas Electronics Corporation, featuring 2 elements with 4 bits per element and 3-state output capability. This component operates within the 4.75V to 5.25V supply voltage range and is housed in a 20-SOIC surface mount package. The part is currently in Last Time Buy status, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

74FCT240CTSOG

Renesas Electronics CorporationIn Stock: 117074FCT240CTSOG Datasheet

Current PartRFQ

CY74FCT240ATSOC

Texas InstrumentsIn Stock: 2735CY74FCT240ATSOC Datasheet

MFR RecommendedRFQ

CY74FCT240ATSOCT

Texas InstrumentsIn Stock: 3484CY74FCT240ATSOCT Datasheet

MFR RecommendedRFQ

CY74FCT240TSOC

Texas InstrumentsIn Stock: 1815CY74FCT240TSOC Datasheet

MFR RecommendedRFQ

CY74FCT240TSOCT

Texas InstrumentsIn Stock: 2935CY74FCT240TSOCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74FCT240CTSOG are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Electrical Parameters:

• Logic Type: Buffer, Inverting (identical function)
• Number of Elements: 2 (identical configuration)
• Number of Bits per Element: 4 (identical configuration)
• Output Type: 3-State (identical output capability)
• Voltage - Supply: 4.75V ~ 5.25V (identical operating range)
• Operating Temperature: -40°C ~ 85°C (TA) (identical temperature range)

Mechanical Parameters:

• Package / Case: 20-SOIC (0.295", 7.50mm Width) (identical footprint)
• Mounting Type: Surface Mount (identical mounting)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (identical compliance)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (identical handling requirements)

All substitute parts maintain identical logic functionality, electrical specifications, and physical packaging. Variations exist only in packaging format (Tube vs. Tape & Reel) and output current specifications, which remain within compatible operating ranges.

Parameter Comparison

Engineering Selection Recommendations

All four Texas Instruments substitute parts (CY74FCT240ATSOC, CY74FCT240ATSOCT, CY74FCT240TSOC, CY74FCT240TSOCT) are functionally equivalent to the 74FCT240CTSOG and maintain Active product status, ensuring long-term availability and supply chain continuity. These alternatives are ROHS3 compliant and carry identical MSL ratings, meeting the same environmental and regulatory requirements.

The primary distinction among substitute options is packaging format. Tube packaging (CY74FCT240ATSOC, CY74FCT240TSOC) is suitable for manual assembly and lower-volume applications, while Tape & Reel packaging (CY74FCT240ATSOCT, CY74FCT240TSOCT) is optimized for automated pick-and-place assembly processes and higher-volume production runs.

Output current specifications for Texas Instruments parts show 32mA for output high current, compared to 15mA for the original Renesas part. This represents an increase in drive capability that remains within acceptable operating parameters for 74FCT logic family applications and does not introduce compatibility issues in standard circuit implementations.

Frequently Asked Questions (FAQ)

Q: Are the Texas Instruments CY74FCT240 variants pin-compatible with the Renesas 74FCT240CTSOG?

A: Yes. All substitute parts share identical 20-SOIC package geometry (0.295", 7.50mm width) and pin configuration, ensuring direct footprint compatibility on PCBs designed for the original part.

Q: What is the difference between Tube and Tape & Reel packaging options?

A: Tube packaging contains loose components suitable for manual handling and small-quantity assembly. Tape & Reel packaging presents components in continuous carrier tape format, designed for automated assembly equipment. Both formats contain identical components; packaging selection depends on assembly methodology and production volume.

Q: Does the higher output current (32mA vs. 15mA) of the Texas Instruments parts affect circuit compatibility?

A: No. The increased output high current of Texas Instruments parts represents enhanced drive capability within the 74FCT logic family specification. This does not create compatibility issues and may improve signal integrity in applications with higher capacitive loads.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts carry ROHS3 compliance certification, matching the environmental compliance status of the original 74FCT240CTSOG.

Q: What is the moisture sensitivity level for these components?

A: All parts, including the original and all substitutes, carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can I use these parts interchangeably in existing designs?

A: Yes. The substitute parts maintain identical electrical specifications, operating temperature range, supply voltage requirements, and physical packaging, enabling direct substitution in existing circuit designs without modification.