74ABT244CSJX Equivalent & Substitute Parts

Part Overview

The 74ABT244CSJX is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This component operates across a 4.5V to 5.5V supply range and is housed in a 20-SOP package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	74ABT244CSJX
Manufacturer	onsemi
Series	74ABT
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Current - Output High, Low	32mA, 64mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	20-SOIC (0.209", 5.30mm Width)
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74ABT244CSJX is determined by strict equivalence across the following critical parameters:

Logic Type: Buffer, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 4
Output Type: 3-State
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -40°C ~ 85°C (TA)
Mounting Type: Surface Mount
Series: 74ABT

Substitute parts are grouped into two categories based on output current specifications:

Category A (Matching Output Current: 32mA High, 64mA Low): SN74ABT244ADW, SN74ABT244ADWR, SN74ABT244ANSR

Category B (Reduced Output Current: 32mA High, 12mA Low): SN74ABT2244ADW, SN74ABT2244ADWR, SN74ABT2244ANS

All substitute parts are manufactured by Texas Instruments and carry active product status with RoHS3 compliance.

Parameter Comparison

Parameter	74ABT244CSJX (onsemi)	SN74ABT244ADW (TI)	SN74ABT244ADWR (TI)	SN74ABT244ANSR (TI)	SN74ABT2244ADW (TI)	SN74ABT2244ADWR (TI)	SN74ABT2244ANS (TI)
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
Current - Output High, Low	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 12mA	32mA, 12mA	32mA, 12mA
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	20-SOIC (0.209", 5.30mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.209", 5.30mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.295", 7.50mm Width)	20-SOIC (0.209", 5.30mm Width)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All Texas Instruments substitute parts listed carry active product status, ensuring long-term availability and manufacturing support. All substitute parts are RoHS3 compliant, meeting current environmental and regulatory requirements.

For applications requiring exact output current matching (32mA high, 64mA low), select from Category A parts: SN74ABT244ADW, SN74ABT244ADWR, or SN74ABT244ANSR.

For applications where reduced output current (32mA high, 12mA low) is acceptable, Category B parts offer equivalent functionality: SN74ABT2244ADW, SN74ABT2244ADWR, or SN74ABT2244ANS.

Package selection depends on PCB layout requirements. The 20-SOIC (0.209", 5.30mm Width) package matches the original 74ABT244CSJX footprint and is available in SN74ABT244ANSR and SN74ABT2244ANS. The 20-SOIC (0.295", 7.50mm Width) package is available in SN74ABT244ADW, SN74ABT244ADWR, SN74ABT2244ADW, and SN74ABT2244ADWR.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT2244 series parts directly replace SN74ABT244 series parts?

A: SN74ABT2244 series parts are functionally equivalent in logic operation but feature reduced output current on the low side (12mA versus 64mA). Direct substitution is possible only if the application does not require the higher output current specification.

Q: What is the difference between the two package widths listed?

A: The 20-SOIC (0.209", 5.30mm Width) is a narrower package variant, while the 20-SOIC (0.295", 7.50mm Width) is wider. PCB layout and footprint design determine which package is suitable. Verify footprint compatibility before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes, all Texas Instruments substitute parts listed are RoHS3 compliant. The original onsemi part does not specify RoHS status.

Q: What packaging options are available for the substitute parts?

A: Substitute parts are available in Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel packaging. Selection depends on procurement volume and assembly requirements.

Q: Why is the original 74ABT244CSJX classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by onsemi. Texas Instruments actively manufactures equivalent 74ABT244 and 74ABT2244 series parts, providing continuity for existing designs.

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