74FCT240ATPYG Equivalent & Substitute Parts

Part Overview

The 74FCT240ATPYG is a Buffer, Inverting logic IC manufactured by Renesas Electronics Corporation. This component features 2 elements with 4 bits per element and 3-state output capability, housed in a 20-SSOP package. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

74FCT240ATPYG

Renesas Electronics CorporationIn Stock: 104074FCT240ATPYG Datasheet

Current PartRFQ

CY74FCT2240CTQCT

Texas InstrumentsIn Stock: 3322CY74FCT2240CTQCT Datasheet

MFR RecommendedRFQ

CY74FCT240ATQCT

Texas InstrumentsIn Stock: 5660CY74FCT240ATQCT Datasheet

MFR RecommendedRFQ

CY74FCT240TQCT

Cypress Semiconductor CorpIn Stock: 4179CY74FCT240TQCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74FCT240ATPYG is determined by the following critical parameters: logic type (Buffer, Inverting), element configuration (2 elements, 4 bits per element), output type (3-State), supply voltage range (4.75V ~ 5.25V), operating temperature range (-40°C ~ 85°C), and package type (20-SSOP). All substitute parts listed maintain these core functional and electrical specifications. Differences in output current ratings and package dimensions are secondary considerations that do not prevent functional substitution within the specified electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with current manufacturing support, addressing the obsolescence status of the 74FCT240ATPYG. The CY74FCT240ATQCT and CY74FCT240TQCT maintain identical output current specifications (32mA high, 64mA low) to the original part, providing direct functional equivalence. The CY74FCT2240CTQCT offers reduced output low current (12mA versus 64mA), which may be suitable for applications with lower current drive requirements. Both Texas Instruments parts carry ROHS3 compliance certification. Package dimensions differ across substitutes, with all alternatives featuring a narrower 20-SSOP body (3.90mm width) compared to the original (5.30mm width), which may require PCB layout verification for existing designs.

Frequently Asked Questions (FAQ)

Q: Can the CY74FCT2240CTQCT replace the 74FCT240ATPYG directly? A: The CY74FCT2240CTQCT maintains all core functional parameters including logic type, element configuration, output type, and supply voltage. However, the output low current is reduced from 64mA to 12mA. Direct replacement is possible if the application does not require the higher current drive capability of the original part.

Q: What is the primary difference between the three substitute options? A: The CY74FCT240ATQCT and CY74FCT240TQCT both provide output current specifications matching the original part (32mA high, 64mA low). The CY74FCT2240CTQCT offers lower output low current (12mA). All three maintain identical logic functionality and electrical specifications for supply voltage and operating temperature.

Q: Are there package compatibility concerns with these substitutes? A: All substitute parts use the 20-SSOP package type. The original part has a package width of 5.30mm, while all substitutes measure 3.90mm width. PCB layouts designed for the original part may require verification to accommodate the narrower package dimensions of the substitute parts.

Q: Do all substitute parts meet compliance requirements? A: The CY74FCT240ATQCT and CY74FCT2240CTQCT are ROHS3 compliant. The CY74FCT240TQCT compliance status is not specified in the available data. All parts are classified as REACH Unaffected and carry EAR99 ECCN designation.

Q: Which substitute part offers the best compatibility with the original 74FCT240ATPYG? A: The CY74FCT240ATQCT provides the closest functional match, maintaining identical output current specifications (32mA high, 64mA low) and ROHS3 compliance certification. This part is recommended for applications requiring direct electrical equivalence to the original component.