74FCT244CTQG8 Equivalent & Substitute Parts

Part Overview

The 74FCT244CTQG8 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 within the 74FCT logic series and is packaged in a 20-QSOP surface mount configuration. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this buffer functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	74FCT244CTQG8
Manufacturer	Renesas Electronics Corporation
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Voltage - Supply	4.75V ~ 5.25V
Current - Output High	15mA
Current - Output Low	64mA
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	20-SSOP (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitute parts for the 74FCT244CTQG8 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Functional Parameters:

Logic Type: Buffer, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 4
Output Type: 3-State
Voltage - Supply: 4.75V ~ 5.25V
Operating Temperature: -40°C ~ 85°C (TA)

Mechanical Compatibility:

Mounting Type: Surface Mount
Package / Case: 20-SSOP (0.154", 3.90mm Width)

Compliance Requirements:

RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

Substitute parts from Texas Instruments maintain identical functional specifications and package dimensions. Variations in output current ratings (15mA/12mA versus 32mA/64mA) and moisture sensitivity levels (MSL 2 versus MSL 1) are within acceptable substitution parameters for this device category. All substitute parts are in Active product status, ensuring continued availability and support.

Parameter Comparison

Parameter	74FCT244CTQG8 (Main)	CY74FCT2244ATQCT	CY74FCT2244CTQCT	CY74FCT2244TQCT	CY74FCT244ATQCT	CY74FCT244CTQCT	CY74FCT244TQCT
Manufacturer	Renesas Electronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	2	2	2	2	2	2	2
Number of Bits per Element	4	4	4	4	4	4	4
Output Type	3-State	3-State	3-State	3-State	3-State	3-State	3-State
Voltage - Supply	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.75V ~ 5.25V
Current - Output High, Low	15mA, 64mA	15mA, 12mA	15mA, 12mA	15mA, 12mA	32mA, 64mA	32mA, 64mA	32mA, 64mA
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	20-SSOP (0.154", 3.90mm Width)	20-SSOP (0.154", 3.90mm Width)	20-SSOP (0.154", 3.90mm Width)	20-SSOP (0.154", 3.90mm Width)	20-SSOP (0.154", 3.90mm Width)	20-SSOP (0.154", 3.90mm Width)	20-SSOP (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Active	Active	Active	Active	Active	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)	2 (1 Year)
Inventory Status	733 Pcs New Original In Stock	4977 Pcs New Original In Stock	1245 Pcs New Original In Stock	3137 Pcs New Original In Stock	2014 Pcs New Original In Stock	4089 Pcs New Original In Stock	1842 Pcs New Original In Stock

Engineering Selection Recommendations

All Texas Instruments substitute parts listed maintain Active product status, ensuring long-term availability and manufacturing support. Each substitute part carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

Selection between substitute options should be based on output current requirements and packaging format availability:

For applications requiring 15mA/12mA output current: CY74FCT2244ATQCT, CY74FCT2244CTQCT, or CY74FCT2244TQCT are suitable alternatives.

For applications requiring 32mA/64mA output current: CY74FCT244ATQCT, CY74FCT244CTQCT, or CY74FCT244TQCT provide equivalent performance to the original 74FCT244CTQG8.

All substitute parts are packaged in 20-SSOP configuration with identical mechanical dimensions (0.154", 3.90mm Width), ensuring direct PCB compatibility. Packaging format variations (Cut Tape, Tape & Reel) do not affect electrical or mechanical performance and are determined by procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can CY74FCT2244ATQCT be used as a direct replacement for 74FCT244CTQG8?

A: CY74FCT2244ATQCT is functionally compatible with identical logic type, element count, bit configuration, voltage supply range, and operating temperature. The 20-SSOP package dimensions match exactly. However, output current specifications differ (15mA/12mA versus 15mA/64mA). Verify that your application's output current requirements are met by the substitute part before implementation.

Q: What is the difference between CY74FCT244CTQCT and CY74FCT2244CTQCT?

A: Both parts are non-inverting buffers with 2 elements and 4 bits per element in 20-SSOP packaging. CY74FCT244CTQCT provides 32mA/64mA output current, while CY74FCT2244CTQCT provides 15mA/12mA output current. Selection depends on the load current requirements of your circuit.

Q: Are packaging format differences (Cut Tape vs. Tape & Reel) significant for substitution?

A: Packaging format differences relate only to procurement and handling methods. Cut Tape (CT) and Tape & Reel (TR) variants of the same part number contain identical components with no electrical or mechanical differences. Selection is based on your assembly process requirements and supplier availability.

Q: Why does the original 74FCT244CTQG8 have MSL 1 while substitutes have MSL 2?

A: Moisture Sensitivity Level (MSL) indicates the maximum time a component can be exposed to ambient conditions before soldering. MSL 1 (Unlimited) provides greater flexibility in storage and handling. MSL 2 (1 Year) requires adherence to moisture control protocols during storage and assembly. Verify that your manufacturing process accommodates MSL 2 requirements if selecting a substitute with this rating.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts carry ROHS3 compliance certification and REACH unaffected status, meeting current environmental regulations for electronic components.

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