74ABT241CSJ Equivalent & Substitute Parts

Part Overview

The 74ABT241CSJ is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This device 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	74ABT241CSJ
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 74ABT241CSJ is determined by the following critical parameters:

Logic function: Buffer, Non-Inverting with 2 elements and 4 bits per element
Output configuration: 3-State output
Electrical specifications: 4.5V to 5.5V supply voltage, -40°C to 85°C operating temperature range
Output current capability: 32mA high, 64mA low
Mounting type: Surface Mount
Package compatibility: 20-pin SOIC variants

Substitute parts are grouped into two categories:

Direct Substitutes (SN74ABT241 series): Parts maintaining identical base product number (74ABT241) with matching output current specifications (32mA, 64mA). These are fully compatible replacements with active product status from Texas Instruments.

Parametric Equivalents (SN74ABT244ANS): Parts with identical functional and electrical parameters but different package designation (20-SO vs. 20-SOP). These maintain all critical electrical specifications and operating conditions.

Parameter Comparison

Parameter	74ABT241CSJ (onsemi)	SN74ABT241ADW (TI)	SN74ABT241ADWR (TI)	SN74ABT2241DW (TI)	SN74ABT2241DWR (TI)	SN74ABT244ANS (TI)
Series	74ABT	74ABT	74ABT	74ABT	74ABT	74ABT
Logic Type	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
Number of Bits per Element	4	4	4	4	4	4
Output Type	3-State	3-State	3-State	3-State	3-State	3-State
Current - Output High, Low	32mA, 64mA	32mA, 64mA	32mA, 64mA	32mA, 12mA	32mA, 12mA	32mA, 64mA
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
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
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	20-SOIC (0.209", 5.30mm)	20-SOIC (0.295", 7.50mm)	20-SOIC (0.295", 7.50mm)	20-SOIC (0.295", 7.50mm)	20-SOIC (0.295", 7.50mm)	20-SOIC (0.209", 5.30mm)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	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)

Engineering Selection Recommendations

For Direct Replacement (Identical Output Current 32mA/64mA):

SN74ABT241ADW and SN74ABT241ADWR are the primary substitutes for the 74ABT241CSJ. Both parts maintain the exact output current specifications (32mA high, 64mA low) and are manufactured by Texas Instruments with active product status. SN74ABT241ADW is supplied in tube packaging, while SN74ABT241ADWR is supplied in tape and reel format. Both are ROHS3 compliant and carry identical electrical and thermal specifications.

For Package-Compatible Equivalent (Narrow SOIC):

SN74ABT244ANS provides parametric equivalence with identical output current capability (32mA, 64mA) and maintains the narrow 20-SOIC package (0.209", 5.30mm width) matching the original 74ABT241CSJ footprint. This part is active and ROHS3 compliant.

For Cost-Optimized Alternative (Reduced Output Current):

SN74ABT2241DW and SN74ABT2241DWR feature reduced output low current (12mA vs. 64mA). These parts are suitable only when circuit design permits lower output current specifications. Both are active and ROHS3 compliant.

All substitute parts share identical supply voltage range (4.5V to 5.5V), operating temperature range (-40°C to 85°C), and moisture sensitivity level (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can SN74ABT2241DW be used as a direct replacement for 74ABT241CSJ?

A: SN74ABT2241DW is functionally equivalent but has reduced output low current (12mA vs. 64mA). It is suitable only if circuit design specifications permit this reduced current capability.

Q: What is the difference between SN74ABT241ADW and SN74ABT241ADWR?

A: Both parts are electrically identical. The difference is packaging: ADW is supplied in tube format, while ADWR is supplied in tape and reel format. Selection depends on procurement and assembly requirements.

Q: Is SN74ABT244ANS compatible with the original 74ABT241CSJ footprint?

A: Yes. SN74ABT244ANS maintains the narrow 20-SOIC package (0.209", 5.30mm width) identical to the 74ABT241CSJ, ensuring PCB footprint compatibility.

Q: Are all substitute parts RoHS compliant?

A: All Texas Instruments substitute parts listed are ROHS3 compliant. The original 74ABT241CSJ RoHS status is not specified in available documentation.

Q: What is the primary reason to substitute the 74ABT241CSJ?

A: The 74ABT241CSJ is classified as obsolete. Texas Instruments equivalents (SN74ABT241 series) are active products with ongoing manufacturing and supply availability.

Q: Do all substitute parts operate at the same voltage and temperature range?

A: Yes. All substitute parts operate at 4.5V to 5.5V supply voltage and -40°C to 85°C operating temperature range, matching the original 74ABT241CSJ specifications.

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