74ACT241SJX Equivalent & Substitute Parts

Part Overview

The 74ACT241SJX is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This surface-mount device operates across a 4.5V to 5.5V supply range and is rated for -40°C to 85°C operating temperature. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Specification
Logic Type	Buffer, Non-Inverting
Number of Elements	2
Number of Bits per Element	4
Output Type	3-State
Current - Output High, Low	24mA, 24mA
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)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACT241SJX is determined by the following critical parameters:

Logic Type: Buffer, Non-Inverting
Number of Elements: 2
Number of Bits per Element: 4
Output Type: 3-State
Current - Output High, Low: 24mA, 24mA
Voltage - Supply: 4.5V ~ 5.5V
Operating Temperature: -40°C ~ 85°C (TA)
Mounting Type: Surface Mount
Base Product Number: 74ACT241 or 74ACT244

Substitute parts are grouped into two categories:

Direct Substitutes (Same Package): Parts maintaining the 20-SOIC (0.209", 5.30mm Width) package footprint with identical electrical specifications.

Parametric Equivalents (Alternative Package): Parts with identical electrical and functional specifications but different package dimensions, requiring PCB layout verification.

Parameter Comparison

Parameter	74ACT241SJX	CD74ACT241M96	SN74ACT241DW	SN74ACT241DWR	SN74ACT241NSR	SN74ACT244NSR
Manufacturer	onsemi	Harris Corporation	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
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	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
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 (0.209", 5.30mm)	20-SOIC (0.209", 5.30mm)
Product Status	Obsolete	Obsolete	Last Time Buy	Active	Active	Active
RoHS Status	Not specified	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	Not specified	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct PCB Compatibility (Same Footprint):

SN74ACT241NSR and SN74ACT244NSR are the preferred selections. Both maintain the 20-SOIC (0.209", 5.30mm Width) package footprint identical to the 74ACT241SJX, requiring no PCB layout modifications. Both parts carry Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

For Alternative Packaging (Layout Modification Required):

SN74ACT241DWR offers Active product status with ROHS3 compliance but uses a 20-SOIC (0.295", 7.50mm Width) package, requiring PCB footprint adjustment. SN74ACT241DW carries Last Time Buy status, indicating limited future availability.

For Obsolete Inventory Clearance:

CD74ACT241M96 maintains electrical equivalence but carries RoHS non-compliant status and uses the wider 20-SOIC (0.295", 7.50mm Width) package. This part is suitable only for legacy system support where regulatory compliance is not required.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT241NSR be used as a direct replacement for 74ACT241SJX without PCB modifications?

A: Yes. Both parts share identical package dimensions (20-SOIC, 0.209", 5.30mm Width), electrical specifications, and operating parameters. No PCB layout changes are required.

Q: What is the difference between SN74ACT241DWR and SN74ACT241NSR?

A: Both parts are electrically equivalent with identical specifications. The primary difference is packaging: SN74ACT241DWR uses a wider 20-SOIC (0.295", 7.50mm Width) package and is supplied in Tape & Reel format, while SN74ACT241NSR uses the narrower 20-SOIC (0.209", 5.30mm Width) package. PCB footprint compatibility must be verified before selection.

Q: Why is CD74ACT241M96 listed as a substitute if it has a different package size?

A: CD74ACT241M96 meets all electrical and functional specifications but uses a wider package footprint. It is included for applications where PCB layout can accommodate the larger dimensions. However, its RoHS non-compliant status limits use in regulated applications.

Q: Is SN74ACT244NSR a true equivalent to 74ACT241SJX?

A: SN74ACT244NSR is a parametric equivalent with identical electrical specifications, output current, voltage supply range, and operating temperature. The base product number differs (74ACT244 versus 74ACT241), but functional compatibility is maintained for applications requiring non-inverting buffer operation with 2 elements and 4 bits per element.

Q: What does "Last Time Buy" status mean for SN74ACT241DW?

A: Last Time Buy indicates the manufacturer has announced end-of-life for this part. Existing inventory may be available, but future procurement is not guaranteed. For new designs, Active status parts such as SN74ACT241DWR or SN74ACT241NSR are recommended.

Q: Are all substitute parts ROHS3 compliant?

A: No. CD74ACT241M96 is RoHS non-compliant. All Texas Instruments parts (SN74ACT241DW, SN74ACT241DWR, SN74ACT241NSR, SN74ACT244NSR) carry ROHS3 compliance. Regulatory requirements should determine part selection.

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