74FCT245CTSOG Equivalent & Substitute Parts

Part Overview

The 74FCT245CTSOG is a non-inverting transceiver logic IC manufactured by Renesas Electronics Corporation, designed for 8-bit data bus applications with 3-state output capability. This component operates within a 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 reliability for applications requiring this transceiver functionality.

Key Parameters

Parameter	Specification
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High / Low	15mA / 64mA
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74FCT245CTSOG is determined by strict equivalence across the following critical parameters: logic type (non-inverting transceiver), element and bit configuration (1 element, 8 bits), output type (3-state), supply voltage range (4.75V ~ 5.25V), package type (20-SOIC), and mounting method (surface mount). All substitute parts listed maintain these core electrical and mechanical specifications. Differences in output current ratings, operating temperature ranges, packaging format (tube vs. tape & reel), and product status are noted but do not prevent functional substitution when application requirements are met.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Output Current (High/Low)	Operating Temp	Package Format	Product Status	Inventory
74FCT245CTSOG	Renesas Electronics	Transceiver, Non-Inverting	15mA / 64mA	-40°C ~ 85°C	Tube	Last Time Buy	1089 Pcs
74FCT245ATSOG	Renesas Electronics	Transceiver, Non-Inverting	15mA / 64mA	-40°C ~ 85°C	Tube	Active	666 Pcs
CD74FCT245M96	Texas Instruments	Transceiver, Non-Inverting	15mA / 64mA	0°C ~ 70°C	Tape & Reel	Active	3694 Pcs
CY74FCT2245ATSOC	Texas Instruments	Transceiver, Non-Inverting	15mA / 12mA	-40°C ~ 85°C	Tube	Active	2090 Pcs
CY74FCT2245ATSOCT	Texas Instruments	Transceiver, Non-Inverting	15mA / 12mA	-40°C ~ 85°C	Cut Tape & Digi-Reel	Active	2608 Pcs
CY74FCT2245CTSOCT	Texas Instruments	Transceiver, Non-Inverting	15mA / 12mA	-40°C ~ 85°C	Tape & Reel	Active	2980 Pcs
CY74FCT2245TSOC	Texas Instruments	Transceiver, Non-Inverting	15mA / 12mA	-40°C ~ 85°C	Tube	Active	1338 Pcs
CY74FCT2245TSOCT	Cypress Semiconductor	Transceiver, Non-Inverting	15mA / 12mA	-40°C ~ 85°C	Bulk	Active	5368 Pcs
CY74FCT245ATSOC	Texas Instruments	Transceiver, Non-Inverting	32mA / 64mA	-40°C ~ 85°C	Tube	Active	1557 Pcs
CY74FCT245ATSOCT	Texas Instruments	Transceiver, Non-Inverting	32mA / 64mA	-40°C ~ 85°C	Tape & Reel	Active	2000 Pcs
CY74FCT245CTSOC	Texas Instruments	Transceiver, Non-Inverting	32mA / 64mA	-40°C ~ 85°C	Tube	Active	1520 Pcs

Engineering Selection Recommendations

For direct replacement of the 74FCT245CTSOG, the 74FCT245ATSOG from Renesas Electronics is the primary equivalent, maintaining identical electrical specifications and operating temperature range while offering Active product status. This part is available in tube packaging and provides continuity with the original manufacturer.

For applications requiring higher inventory availability and active production status, the CD74FCT245M96 from Texas Instruments is functionally equivalent with matching output current specifications. Note that this part operates within a narrower temperature range (0°C ~ 70°C) and is supplied in tape & reel format, requiring adjustment to assembly processes if tube packaging is required.

The CY74FCT245ATSOC and CY74FCT245ATSOCT variants from Texas Instruments provide equivalent functionality with higher output high current (32mA) and are available in both tube and tape & reel formats. These parts maintain the full -40°C ~ 85°C operating temperature range and ROHS3 compliance.

Parts designated as CY74FCT2245 variants (74FCT2245 base number) are functionally compatible but feature reduced output low current (12mA instead of 64mA). Selection of these parts requires verification that application load requirements do not exceed the lower current specification.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical package geometry (20-SOIC), ensuring mechanical and environmental compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can the 74FCT245ATSOG directly replace the 74FCT245CTSOG?

A: Yes. Both parts share identical electrical specifications including output current (15mA/64mA), supply voltage (4.75V ~ 5.25V), operating temperature (-40°C ~ 85°C), and 20-SOIC package geometry. The primary difference is product status; the ATSOG variant is Active while the CTSOG is Last Time Buy.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging supplies components in plastic tubes suitable for manual handling and small-volume assembly. Tape & reel packaging provides components on continuous carrier tape for automated pick-and-place assembly. Both formats contain identical components; selection depends on assembly process requirements.

Q: Are the CY74FCT2245 variants suitable replacements?

A: The CY74FCT2245 variants maintain core transceiver functionality and package compatibility but feature a different base part number (74FCT2245 vs. 74FCT245) and reduced output low current specification (12mA vs. 64mA). These parts are functionally compatible only if application load requirements do not exceed 12mA on the low output.

Q: Why does the CD74FCT245M96 have a narrower operating temperature range?

A: The CD74FCT245M96 operates from 0°C ~ 70°C, compared to the -40°C ~ 85°C range of the original part. This part is suitable for applications within this temperature window. Applications requiring the full -40°C ~ 85°C range should select alternatives with matching temperature specifications.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring environmental and regulatory compatibility with the original 74FCT245CTSOG design.

Q: What inventory considerations should guide part selection?

A: The CD74FCT245M96 offers the highest current inventory (3694 Pcs), followed by CY74FCT2245TSOCT (5368 Pcs in bulk format). For immediate availability in standard packaging formats, the CY74FCT2245CTSOCT (2980 Pcs) and CY74FCT2245ATSOCT (2608 Pcs) provide active production status with substantial stock levels.

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