54FCT245ATDB Equivalent & Substitute Parts

Part Overview

The 54FCT245ATDB is an octal bus transceiver with non-inverting logic, manufactured by Renesas Electronics Corporation. This device functions as a 1-element, 8-bit per element transceiver with 3-state output capability, designed for 20-CDIP through-hole mounting. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	54FCT245ATDB
Manufacturer	Renesas Electronics Corporation
Logic Type	Transceiver, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	12mA, 48mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-55°C ~ 125°C (TA)
Package / Case	20-CDIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 54FCT245ATDB is determined by strict equivalence across the following critical parameters:

Logic Type: Transceiver, Non-Inverting
Number of Elements: 1
Number of Bits per Element: 8
Output Type: 3-State
Current - Output High, Low: 12mA, 48mA
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -55°C ~ 125°C (TA)
Package / Case: 20-CDIP (0.300", 7.62mm)
Mounting Type: Through Hole

All substitute parts listed maintain these exact electrical and mechanical specifications. Parts are grouped by product status and compliance certifications to facilitate selection based on application requirements.

Parameter Comparison

Part Number	Manufacturer	Series	Logic Type	Elements / Bits	Output Type	Current (High, Low)	Voltage Supply	Temp Range	Package	Product Status	RoHS Status
54FCT245ATDB	Renesas Electronics	54FCT	Non-Inverting	1 / 8	3-State	12mA, 48mA	4.5V ~ 5.5V	-55°C ~ 125°C	20-CDIP	Obsolete	Non-compliant
8551101RA	Texas Instruments	54F	Non-Inverting	1 / 8	3-State	12mA, 48mA	4.5V ~ 5.5V	-55°C ~ 125°C	20-CDIP	Active	ROHS3 Compliant
CY54FCT245ATDMB	Texas Instruments	54FCT	Non-Inverting	1 / 8	3-State	12mA, 48mA	4.5V ~ 5.5V	-55°C ~ 125°C	20-CDIP	Active	ROHS3 Compliant
JM38510/34803BRA	Texas Instruments	54F	Non-Inverting	1 / 8	3-State	12mA, 48mA	4.5V ~ 5.5V	-55°C ~ 125°C	20-CDIP	Active	ROHS3 Compliant
M38510/34803BRA	Texas Instruments	54F	Non-Inverting	1 / 8	3-State	12mA, 48mA	4.5V ~ 5.5V	-55°C ~ 125°C	20-CDIP	Active	ROHS3 Compliant
SN54F245J	Texas Instruments	54F	Non-Inverting	1 / 8	3-State	12mA, 48mA	4.5V ~ 5.5V	-55°C ~ 125°C	20-CDIP	Active	ROHS3 Compliant
SNJ54AS645J	Texas Instruments	54AS	Non-Inverting	1 / 8	3-State	12mA, 48mA	4.5V ~ 5.5V	-55°C ~ 125°C	20-CDIP	Active	ROHS3 Compliant
SNJ54BCT623J	Texas Instruments	54BCT	Non-Inverting	1 / 8	3-State	12mA, 48mA	4.5V ~ 5.5V	-55°C ~ 125°C	20-CDIP	Active	ROHS3 Compliant
SNJ54F245J	Texas Instruments	54F	Non-Inverting	1 / 8	3-State	12mA, 48mA	4.5V ~ 5.5V	-55°C ~ 125°C	20-CDIP	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the 54FCT245ATDB. Selection should prioritize active product status and compliance certifications:

Primary Recommendation: CY54FCT245ATDMB (Texas Instruments, 54FCT series) provides the closest functional match with identical series designation, active product status, and ROHS3 compliance.

Alternative Selections: SN54F245J, SNJ54F245J, and 8551101RA offer equivalent electrical performance within the 54F series with active status and ROHS3 compliance. These parts are suitable for applications where series compatibility is not a constraint.

Specialized Applications: SNJ54AS645J (54AS series) and SNJ54BCT623J (54BCT series) maintain full parameter equivalence and active status, appropriate for systems requiring specific logic family characteristics.

All substitute parts are RoHS3 compliant and REACH unaffected, supporting modern manufacturing and environmental compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the 54FCT245ATDB be directly replaced with any of the listed substitutes?

A: Yes. All listed parts maintain identical electrical specifications (12mA/48mA output current, 4.5V–5.5V supply, -55°C to 125°C operating range) and mechanical compatibility (20-CDIP through-hole package). Direct pin-for-pin substitution is supported.

Q: What is the difference between the 54FCT, 54F, and 54AS series options?

A: These designations identify different logic families within the TTL/CMOS transceiver category. All listed parts maintain identical electrical performance for the 54FCT245ATDB application. Series selection depends on system design preferences and inventory availability.

Q: Are all substitute parts RoHS compliant?

A: Yes. All active substitute parts listed are ROHS3 compliant. The original 54FCT245ATDB is RoHS non-compliant due to its obsolete status.

Q: Which substitute part has the highest inventory availability?

A: CY54FCT245ATDMB (1546 pcs) and SN54F245J (1416 pcs) offer the highest stock levels among active alternatives.

Q: Can I use SNJ54BCT245J as a substitute?

A: SNJ54BCT245J is not listed as a direct parametric equivalent. While it shares the same package and basic transceiver function, its output current specifications differ (3mA/24mA and 15mA/64mA versus the required 12mA/48mA), making it unsuitable for direct substitution.

Q: What mounting considerations apply to these substitutes?

A: All substitute parts use through-hole 20-CDIP packaging (0.300", 7.62mm pitch), identical to the original 54FCT245ATDB. No PCB layout modifications are required.

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