74ABT2244CSJX Equivalent & Substitute Parts

Part Overview

The 74ABT2244CSJX 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 voltage range and is rated for -40°C to 85°C operating temperature. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Specification
Manufacturer Part Number	74ABT2244CSJX
Manufacturer	onsemi
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Current - Output High, Low	32mA, 15mA
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 eligibility for the 74ABT2244CSJX is determined by the following critical parameters:

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

Output current specifications (32mA high, 15mA low for the main part) establish the baseline performance requirement. Substitute parts with equal or higher output current ratings are functionally compatible. Package variations (20-SOIC with different physical dimensions) are acceptable provided the electrical pinout and functional behavior remain identical within the 74ABT series definition.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current High/Low (mA)	Supply Voltage	Temp Range	Package	Product Status
74ABT2244CSJX	onsemi	Buffer, Non-Inverting	2	4	3-State	32, 15	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC (0.209", 5.30mm)	Obsolete
SN74ABT2244ADW	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	32, 12	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC (0.295", 7.50mm)	Active
SN74ABT2244ADWR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	32, 12	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC (0.295", 7.50mm)	Active
SN74ABT2244ANSR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	32, 12	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC (0.209", 5.30mm)	Active
SN74ABT244ADW	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	32, 64	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC (0.295", 7.50mm)	Active
SN74ABT244ADWR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	32, 64	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC (0.295", 7.50mm)	Active
SN74ABT244ANS	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	32, 64	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC (0.209", 5.30mm)	Active
SN74ABT244ANSR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	32, 64	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC (0.209", 5.30mm)	Active

Engineering Selection Recommendations

All listed Texas Instruments substitute parts maintain active product status, ensuring long-term availability and continued manufacturing support. The SN74ABT2244 series variants (SN74ABT2244ADW, SN74ABT2244ADWR, SN74ABT2244ANSR) are direct functional equivalents to the 74ABT2244CSJX, sharing identical logic configuration and electrical specifications. These parts carry ROHS3 compliance certification.

The SN74ABT244 series variants (SN74ABT244ADW, SN74ABT244ADWR, SN74ABT244ANS, SN74ABT244ANSR) provide enhanced output current capability (64mA low output current versus 15mA in the original part), offering superior drive capability while maintaining full backward compatibility with the 74ABT2244CSJX pinout and functional behavior.

Package selection between 20-SOIC variants depends on PCB layout requirements. The 0.209" width package (SN74ABT2244ANSR, SN74ABT244ANS, SN74ABT244ANSR) matches the original 74ABT2244CSJX footprint. The 0.295" width package (SN74ABT2244ADW, SN74ABT2244ADWR, SN74ABT244ADW, SN74ABT244ADWR) requires PCB layout verification for compatibility.

Frequently Asked Questions (FAQ)

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

A: Yes. Both series share identical logic configuration (2 elements, 4 bits per element, non-inverting buffer, 3-state output), supply voltage range (4.5V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). The SN74ABT244 variants provide enhanced output current capability, making them functionally superior substitutes.

Q: What is the difference between packaging options?

A: The 20-SOIC package is available in two physical widths: 0.209" (5.30mm) and 0.295" (7.50mm). The 0.209" width matches the original 74ABT2244CSJX footprint. The 0.295" width requires verification against your PCB layout. Electrical pinout and function remain identical across both package widths.

Q: Are there compliance differences between substitute parts?

A: All Texas Instruments substitute parts carry ROHS3 compliance certification. The original 74ABT2244CSJX is classified as obsolete. All active substitutes maintain REACH Unaffected status and EAR99 export classification.

Q: What output current specifications should I consider?

A: The original 74ABT2244CSJX specifies 32mA high output and 15mA low output current. SN74ABT2244 variants maintain these specifications. SN74ABT244 variants provide 32mA high output and 64mA low output current, offering enhanced drive capability for applications requiring higher current sourcing.

Q: How do packaging options affect component procurement?

A: Packaging variants (Tube, Tape & Reel, Cut Tape & Digi-Reel) affect order quantities and handling but do not impact electrical function. Verify packaging compatibility with your assembly process requirements.

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