74FCT2245CTSOG Equivalent & Substitute Parts

Part Overview

The 74FCT2245CTSOG is a non-inverting transceiver logic IC manufactured by Renesas Electronics Corporation, designed for 8-bit bidirectional data transfer with 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, indicating end-of-life production. Equivalent and substitute parts are necessary to ensure design continuity and maintain supply chain flexibility for applications requiring this transceiver functionality.

Key Parameters

Parameter	Value
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Voltage Supply Range	4.75V ~ 5.25V
Operating Temperature Range	-40°C ~ 85°C (TA)
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74FCT2245CTSOG is determined by strict equivalence across the following critical parameters:

Logic type: Non-inverting transceiver configuration
Bit width: 8-bit per element
Output architecture: 3-state capability
Supply voltage compatibility: 4.75V ~ 5.25V range
Package footprint: 20-SOIC form factor
Operating temperature range: -40°C ~ 85°C minimum
Surface mount compatibility

Substitute parts are grouped into two categories:

Manufacturer Recommended Substitutes (MFR): Parts meeting all electrical and mechanical parameters with active product status and full compliance certifications.

Parametric Equivalents: Parts matching all core functional parameters but with variations in output current specifications or packaging format, suitable for applications where these variations do not impact circuit performance.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Current - Output High / Low (mA)	Operating Temperature (°C)	Packaging	Inventory (Pcs)
74FCT2245CTSOG	Renesas Electronics	Last Time Buy	15 / 12	-40 ~ 85	Tube	866
CD74FCT245M96	Texas Instruments	Active	15 / 64	0 ~ 70	Tape & Reel	3694
CY74FCT2245ATSOCT	Texas Instruments	Active	15 / 12	-40 ~ 85	Cut Tape & Digi-Reel	2608
CY74FCT2245CTSOCT	Texas Instruments	Active	15 / 12	-40 ~ 85	Tape & Reel	2980
CY74FCT2245TSOCT	Cypress Semiconductor	Active	15 / 12	-40 ~ 85	Bulk	5368
CY74FCT245ATSOC	Texas Instruments	Active	32 / 64	-40 ~ 85	Tube	1557
CY74FCT245ATSOCT	Texas Instruments	Active	32 / 64	-40 ~ 85	Tape & Reel	2000
CY74FCT245CTSOC	Texas Instruments	Active	32 / 64	-40 ~ 85	Tube	1520
CY74FCT245TSOC	Cypress Semiconductor	Active	32 / 64	-40 ~ 85	Bulk	1955
CY74FCT245TSOCT	Texas Instruments	Active	32 / 64	-40 ~ 85	Tape & Reel	1153
CY74FCT2245ATSOC	Texas Instruments	Active	15 / 12	-40 ~ 85	Tube	2090

Engineering Selection Recommendations

Primary Substitutes (Full Compatibility):

CY74FCT2245ATSOCT, CY74FCT2245CTSOCT, and CY74FCT2245ATSOC provide direct functional equivalence to the 74FCT2245CTSOG with identical output current specifications (15mA / 12mA) and operating temperature range (-40°C ~ 85°C). All three maintain ROHS3 compliance and MSL Level 1 rating. These parts are in active production status, ensuring long-term availability.

Secondary Substitutes (Parameter Variation):

CY74FCT245ATSOC, CY74FCT245ATSOCT, CY74FCT245CTSOC, and CY74FCT245TSOCT operate within the same voltage and temperature specifications but feature elevated output current ratings (32mA / 64mA). These parts are suitable for applications where increased drive capability is beneficial or neutral to circuit operation. All maintain active product status and full compliance certifications.

Conditional Substitute (Temperature Limitation):

CD74FCT245M96 from Texas Instruments operates at a reduced temperature range (0°C ~ 70°C) compared to the original specification (-40°C ~ 85°C). This part is appropriate only for applications operating within the 0°C to 70°C window. Output current specification differs (15mA / 64mA). Active product status and ROHS3 compliance are maintained.

Packaging Considerations:

Tube packaging (original format) is available in CY74FCT2245ATSOC and CY74FCT245ATSOC. Tape & Reel formats are available across multiple part numbers for automated assembly processes. Bulk packaging options exist through Cypress Semiconductor variants.

Frequently Asked Questions (FAQ)

Q: Can CD74FCT245M96 be used as a direct replacement for 74FCT2245CTSOG?

A: CD74FCT245M96 is functionally compatible within its operating temperature range of 0°C to 70°C. If your application operates exclusively within this temperature window, this part is suitable. However, if your design requires the full -40°C to 85°C range, this substitute is not appropriate.

Q: What is the difference between CY74FCT2245 and CY74FCT245 part numbers?

A: Both are non-inverting transceivers in 20-SOIC packages. The CY74FCT2245 variants maintain the original 15mA / 12mA output current specification. The CY74FCT245 variants feature higher output current ratings (32mA / 64mA). Select based on your circuit's current drive requirements.

Q: Are all substitute parts ROHS3 compliant?

A: All manufacturer-recommended substitutes listed maintain ROHS3 compliance. Verify compliance documentation for any parts sourced from alternative distributors or secondary markets.

Q: Does packaging format affect electrical performance?

A: No. Tube, Tape & Reel, and Bulk packaging formats contain electrically identical components. Packaging selection is determined by assembly process requirements and inventory management practices.

Q: Why is the 74FCT2245CTSOG in Last Time Buy status?

A: Last Time Buy status indicates Renesas Electronics has discontinued production. Substitute parts from active manufacturers (Texas Instruments, Cypress Semiconductor) ensure continued design support and supply chain stability.

Q: Can I mix substitute parts from different manufacturers in the same design?

A: Yes. All listed substitutes meet the same electrical and mechanical specifications. Cross-manufacturer substitution is permissible within the same application.

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