54FCT244CTDB Equivalent & Substitute Parts

Part Overview

The 54FCT244CTDB is a non-inverting buffer logic integrated circuit manufactured by Renesas Electronics Corporation. This device features 2 elements with 4 bits per element and 3-state output capability, housed in a 20-CDIP package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	54FCT244CTDB
Manufacturer	Renesas Electronics Corporation
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
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

Substitute parts for the 54FCT244CTDB are qualified based on the following critical parameters that must remain constant:

Logic Type: Buffer, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 4
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 electrical and mechanical specifications, ensuring functional compatibility in applications designed for the 54FCT244CTDB.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current High/Low (mA)	Supply Voltage	Temp Range (°C)	Package	Product Status	RoHS Status
54FCT244CTDB	Renesas	Buffer, Non-Inverting	2	4	3-State	12, 48	4.5V ~ 5.5V	-55 ~ 125	20-CDIP	Obsolete	RoHS non-compliant
54FCT244TDB	Renesas	Buffer, Non-Inverting	2	4	3-State	12, 48	4.5V ~ 5.5V	-55 ~ 125	20-CDIP	Obsolete	RoHS non-compliant
SN54F241J	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	12, 48	4.5V ~ 5.5V	-55 ~ 125	20-CDIP	Active	ROHS3 Compliant
SN54F244J	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	12, 48	4.5V ~ 5.5V	-55 ~ 125	20-CDIP	Active	ROHS3 Compliant
SNJ54BCT244J	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	12, 48	4.5V ~ 5.5V	-55 ~ 125	20-CDIP	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications currently using the obsolete 54FCT244CTDB, the following selection criteria apply:

Active Product Status Priority: SN54F241J, SN54F244J, and SNJ54BCT244J are all active products from Texas Instruments, ensuring long-term availability and continued manufacturing support compared to the obsolete Renesas alternatives.

Compliance Considerations: All Texas Instruments substitutes (SN54F241J, SN54F244J, SNJ54BCT244J) are ROHS3 compliant, meeting modern environmental and regulatory requirements. The Renesas alternatives (54FCT244TDB) remain RoHS non-compliant.

Parametric Equivalence: All listed substitutes maintain identical electrical specifications and 20-CDIP through-hole packaging, enabling direct functional replacement without circuit redesign.

Inventory Availability: Substitute parts demonstrate varying stock levels, with SN54F241J offering 2220 units, SN54F244J with 1359 units, and SNJ54BCT244J with 1160 units in new original condition.

Frequently Asked Questions (FAQ)

Q: Can the 54FCT244TDB directly replace the 54FCT244CTDB? A: Yes. Both parts are manufactured by Renesas Electronics Corporation and share identical electrical and mechanical specifications. The primary difference is packaging format (tube versus standard). Both remain obsolete products.

Q: What is the advantage of selecting Texas Instruments substitutes over the Renesas 54FCT244TDB? A: Texas Instruments substitutes (SN54F241J, SN54F244J, SNJ54BCT244J) are active products with ROHS3 compliance, ensuring continued manufacturing support and regulatory alignment. The Renesas 54FCT244TDB is obsolete and RoHS non-compliant.

Q: Are all substitute parts pin-compatible with the 54FCT244CTDB? A: Yes. All substitute parts use the 20-CDIP package with identical pin configuration and electrical characteristics, enabling direct socket replacement.

Q: What is the difference between SN54F241J, SN54F244J, and SNJ54BCT244J? A: All three parts maintain identical electrical specifications and package format. The differences lie in their internal logic family designations (54F versus 54BCT series) and manufacturing lineage, but they are functionally equivalent for the specified parameters.

Q: Can I use these substitutes in new designs? A: Yes. All substitute parts, particularly the active Texas Instruments options, are suitable for new designs. The Texas Instruments parts offer the advantage of active product status and modern compliance certifications.

Q: What should I verify before implementing a substitute part? A: Confirm that your application operates within the specified voltage range (4.5V ~ 5.5V), temperature range (-55°C ~ 125°C), and output current requirements (12mA high, 48mA low). Verify that the 20-CDIP through-hole package is compatible with your PCB design.

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