74FCT240CTSOG8 Equivalent & Substitute Parts

Part Overview

The 74FCT240CTSOG8 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 package. The part is currently in Last Time Buy status, making identification of equivalent alternatives essential for ongoing design support and procurement planning. Substitute parts maintain identical functional specifications and package geometry while offering extended availability through alternative manufacturers.

Key Parameters

Parameter	Specification
Manufacturer Part Number	74FCT240CTSOG8
Manufacturer	Renesas Electronics Corporation
Logic Type	Buffer, Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Voltage - Supply	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution of the 74FCT240CTSOG8 is determined by the following critical parameters:

Logic Type: Buffer, Inverting (2 elements, 4 bits per element)
Output Type: 3-State
Voltage Supply Range: 4.75V ~ 5.25V
Operating Temperature Range: -40°C ~ 85°C
Package: 20-SOIC form factor
Base Product Number: 74FCT240

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in packaging format (Tube vs. Tape & Reel) and output current ratings do not affect functional substitutability within the specified operating parameters.

Parameter Comparison

Parameter	74FCT240CTSOG8 (Renesas)	CY74FCT240ATSOC (TI)	CY74FCT240ATSOCT (TI)	CY74FCT240TSOC (TI)	CY74FCT240TSOCT (TI)
Logic Type	Buffer, Inverting	Buffer, Inverting	Buffer, Inverting	Buffer, Inverting	Buffer, Inverting
Number of Elements	2	2	2	2	2
Number of Bits per Element	4	4	4	4	4
Output Type	3-State	3-State	3-State	3-State	3-State
Current - Output High, Low	15mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA
Voltage - Supply	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	20-SOIC	20-SOIC	20-SOIC	20-SOIC	20-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Active	Active	Active	Active
Packaging Format	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)

Engineering Selection Recommendations

The 74FCT240CTSOG8 has transitioned to Last Time Buy status. Texas Instruments CY74FCT240 series parts provide direct functional equivalents with Active product status, ensuring long-term availability and supply chain continuity.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. The Texas Instruments alternatives offer higher output high current (32mA vs. 15mA), which represents an improvement in drive capability while remaining within the same voltage and temperature operating envelope.

Selection between substitute options should be based on packaging requirements: Tube packaging (CY74FCT240ATSOC, CY74FCT240TSOC) or Tape & Reel format (CY74FCT240ATSOCT, CY74FCT240TSOCT). All four alternatives are electrically and mechanically interchangeable with the original Renesas part.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT240 series parts directly replace the 74FCT240CTSOG8?

A: Yes. All CY74FCT240 variants listed maintain identical logic type, element count, bit configuration, output type, voltage supply range, operating temperature range, and 20-SOIC package geometry. These parts are direct functional equivalents.

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

A: Tube packaging (CY74FCT240ATSOC, CY74FCT240TSOC) is suitable for lower-volume applications and manual assembly. Tape & Reel format (CY74FCT240ATSOCT, CY74FCT240TSOCT) is optimized for automated pick-and-place assembly processes. The electrical and mechanical specifications are identical; packaging selection depends on manufacturing process requirements.

Q: Why do the Texas Instruments substitutes have higher output high current (32mA vs. 15mA)?

A: The increased output high current specification represents enhanced drive capability. This improvement does not affect compatibility; circuits designed for the original 15mA specification will operate correctly with the higher-rated substitute parts.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory standards.

Q: Which substitute part should I select for new designs?

A: For new designs, any of the four CY74FCT240 variants are suitable. Selection should be based on packaging format requirements: choose Tape & Reel variants for automated assembly or Tube variants for manual assembly processes.

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