74FCT2244ATSOG8 Equivalent & Substitute Parts

Part Overview

The 74FCT2244ATSOG8 is a non-inverting buffer logic IC manufactured by Renesas Electronics Corporation, featuring 2 elements with 4 bits per element and 3-state output capability. This device operates at 4.75V to 5.25V supply voltage with an operating temperature range of -40°C to 85°C in a 20-SOIC surface mount package. The part is designated as Last Time Buy status, indicating limited availability from the original manufacturer. Equivalent and substitute parts are necessary to ensure design continuity and maintain supply chain reliability for applications requiring this buffer functionality.

Key Parameters

Parameter	Specification
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
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
Current - Output High, Low	15mA, 12mA
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 74FCT2244ATSOG8 are classified into two functional groups based on electrical parameter compatibility:

Group 1: Full Electrical Equivalents (74FCT2244 Series) Parts maintaining identical output current specifications (15mA high, 12mA low) and full operating temperature range (-40°C to 85°C). These parts are direct functional replacements with no electrical derating required.

Group 2: Electrical Variants (74FCT244 Series) Parts with different output current specifications (15mA or 32mA high, 64mA low) and reduced operating temperature range (0°C to 70°C). These parts require design verification for current-drive capability and thermal operating conditions.

All substitute parts share the following critical parameters with the main part:

Logic Type: Buffer, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 4
Output Type: 3-State
Package / Case: 20-SOIC
Voltage Supply Range: 4.75V ~ 5.25V
Mounting Type: Surface Mount

Parameter Comparison

Part Number	Manufacturer	Product Status	Current - Output High, Low	Operating Temperature	Packaging	RoHS Status	Base Product Number
74FCT2244ATSOG8	Renesas Electronics	Last Time Buy	15mA, 12mA	-40°C ~ 85°C	Tape & Reel (TR)	ROHS3 Compliant	74FCT2244
CY74FCT2244ATSOC	Texas Instruments	Active	15mA, 12mA	-40°C ~ 85°C	Tube	ROHS3 Compliant	74FCT2244
CY74FCT2244CTSOC	Texas Instruments	Active	15mA, 12mA	-40°C ~ 85°C	Tube	ROHS3 Compliant	74FCT2244
CY74FCT2244TSOC	Texas Instruments	Active	15mA, 12mA	-40°C ~ 85°C	Tube	ROHS3 Compliant	74FCT2244
CD74FCT244ATM96	Texas Instruments	Active	15mA, 64mA	0°C ~ 70°C	Tape & Reel (TR)	ROHS3 Compliant	74FCT244
CY74FCT244ATSOC	Texas Instruments	Active	32mA, 64mA	-40°C ~ 85°C	Tube	ROHS3 Compliant	74FCT244
CY74FCT244ATSOCT	Cypress Semiconductor	Active	32mA, 64mA	-40°C ~ 85°C	Bulk	Not Specified	74FCT244
CY74FCT244CTSOC	Texas Instruments	Active	32mA, 64mA	-40°C ~ 85°C	Tube	ROHS3 Compliant	74FCT244
CD74FCT244ATM	Harris Corporation	Obsolete	15mA, 64mA	0°C ~ 70°C	Tube	RoHS Non-Compliant	74FCT244
CD74FCT244M	Harris Corporation	Obsolete	15mA, 64mA	0°C ~ 70°C	Tube	RoHS Non-Compliant	74FCT244
CD74FCT244M96	Harris Corporation	Obsolete	15mA, 64mA	0°C ~ 70°C	Bulk	RoHS Non-Compliant	74FCT244

Engineering Selection Recommendations

Primary Substitutes (Full Compatibility)

CY74FCT2244ATSOC, CY74FCT2244CTSOC, and CY74FCT2244TSOC from Texas Instruments are direct functional equivalents. All three maintain identical electrical specifications (15mA, 12mA output current), full operating temperature range (-40°C to 85°C), ROHS3 compliance, and MSL Level 1 moisture sensitivity rating. These parts are Active status and suitable for new designs and production continuity. Packaging differs (Tube vs. Tape & Reel), requiring verification of assembly line compatibility.

Secondary Substitutes (Electrical Variants)

CY74FCT244ATSOC and CY74FCT244CTSOC from Texas Instruments provide higher output current capability (32mA, 64mA) while maintaining the full operating temperature range and ROHS3 compliance. These parts are suitable for applications requiring increased drive capability. Design verification is required to confirm that higher output current does not introduce signal integrity or thermal management issues.

CD74FCT244ATM96 from Texas Instruments is Active status with ROHS3 compliance but operates at reduced temperature range (0°C to 70°C) and exhibits different output current characteristics (15mA, 64mA). This part is suitable only for applications within the narrower temperature specification.

Obsolete Parts (Not Recommended)

CD74FCT244ATM, CD74FCT244M, and CD74FCT244M96 from Harris Corporation are designated Obsolete and RoHS non-compliant. These parts are not recommended for new designs or long-term production due to supply discontinuation and regulatory non-compliance.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT244ATSOC replace 74FCT2244ATSOG8 directly?

A: CY74FCT244ATSOC shares the same logic type, element count, bit configuration, output type, voltage supply range, operating temperature range, and package. However, it is based on the 74FCT244 series rather than 74FCT2244, and exhibits different output current specifications (32mA, 64mA vs. 15mA, 12mA). Direct substitution requires verification that the application does not depend on the lower output current characteristics of the original part.

Q: What is the difference between 74FCT2244 and 74FCT244 series parts?

A: The 74FCT2244 series maintains output current specifications of 15mA (high) and 12mA (low). The 74FCT244 series provides higher output current capability with specifications ranging from 15mA to 32mA (high) and 64mA (low). Both series share identical logic functionality, element count, and package specifications.

Q: Are the Texas Instruments CY74FCT2244 variants interchangeable?

A: CY74FCT2244ATSOC, CY74FCT2244CTSOC, and CY74FCT2244TSOC are electrically equivalent with identical output current (15mA, 12mA), operating temperature range (-40°C to 85°C), and compliance ratings. Differences exist only in packaging format (Tube). Selection depends on assembly process requirements and packaging compatibility with production equipment.

Q: Why are Harris Corporation parts marked Obsolete?

A: CD74FCT244ATM, CD74FCT244M, and CD74FCT244M96 are designated Obsolete, indicating manufacturer discontinuation. These parts are also RoHS non-compliant, making them unsuitable for applications subject to environmental regulations. Active alternatives from Texas Instruments and Cypress Semiconductor are recommended.

Q: Can I use parts with different operating temperature ranges?

A: Substitution with parts having reduced operating temperature range (0°C to 70°C vs. -40°C to 85°C) is permissible only if the application operates exclusively within the narrower temperature specification. Design verification is required to confirm thermal operating conditions do not exceed the substitute part's rated limits.

Q: What packaging options are available?

A: Substitute parts are available in Tape & Reel (TR), Tube, and Bulk packaging formats. Selection depends on assembly process compatibility. Tape & Reel is standard for automated pick-and-place assembly. Tube packaging is suitable for manual assembly or lower-volume production. Bulk packaging requires manual handling and counting.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message