74AC241SCX Equivalent & Substitute Parts

Part Overview

The 74AC241SCX 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 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The 74AC241SCX operates across a 2V to 6V supply voltage range with ±24mA output current capability and is housed in a 20-SOIC surface mount package.

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	2V ~ 6V
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the 74AC241SCX are classified based on electrical and mechanical parameter alignment:

Parametric Equivalents maintain identical electrical specifications (2V ~ 6V supply, ±24mA output, -40°C ~ 85°C operating range) and identical package dimensions (20-SOIC, 0.295" width). These parts differ only in manufacturer, base product number, or packaging format (tape & reel vs. cut tape).

Direct Manufacturer Equivalents are functionally identical parts from alternative manufacturers with matching electrical parameters and package specifications, though product status may differ.

Similar Parts share the same logic function and electrical characteristics but may have minor package variations (such as 20-SO vs. 20-SOIC width differences) that require PCB layout verification.

The critical parameters determining substitutability are: Logic Type (Buffer, Non-Inverting), Number of Elements (2), Bits per Element (4), Output Type (3-State), Current ratings (24mA), Supply Voltage range (2V ~ 6V), Operating Temperature (-40°C ~ 85°C), and Package footprint compatibility.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Supply (V)	Temp (°C)	Package	Product Status
74AC241SCX	onsemi	Buffer, Non-Inverting	2	4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (7.50mm)	Obsolete
74AC244SCX	onsemi	Buffer, Non-Inverting	2	4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (7.50mm)	Active
MC74AC244DWR2G	onsemi	Buffer, Non-Inverting	2	4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (7.50mm)	Active
SN74AC241DW	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (7.50mm)	Last Time Buy
SN74AC241NSR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SO (5.30mm)	Active
SN74AC241DWR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (7.50mm)	Active
SN74AC244DWR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (7.50mm)	Active

Engineering Selection Recommendations

For new designs and production continuity, the following selection criteria apply based on provided specifications:

Primary Recommendation: 74AC244SCX (onsemi) or SN74AC244DWR (Texas Instruments) are preferred substitutes. Both maintain identical electrical parameters and package dimensions to the 74AC241SCX while offering Active product status, ensuring long-term availability and supply chain stability.

Secondary Options: SN74AC241DWR (Texas Instruments) provides direct functional equivalence with Active status and identical package specifications. MC74AC244DWR2G (onsemi) is an alternative with Active status and full parameter compatibility.

Conditional Substitute: SN74AC241NSR (Texas Instruments) is functionally equivalent with Active status but features a narrower 20-SO package (5.30mm width vs. 7.50mm). This part requires PCB layout verification to confirm footprint compatibility before implementation.

Avoid for New Designs: SN74AC241DW (Texas Instruments) carries Last Time Buy status, indicating limited future availability and is unsuitable for long-term production requirements.

All recommended substitutes comply with ROHS3 or equivalent environmental standards and maintain REACH compliance as specified in the original part documentation.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74AC241SCX with 74AC244SCX on my PCB? A: Yes. Both parts share identical electrical specifications (2V ~ 6V supply, ±24mA output, -40°C ~ 85°C operating range) and identical 20-SOIC package dimensions (0.295" width). No PCB modifications are required.

Q: What is the difference between onsemi and Texas Instruments versions? A: Both manufacturers produce functionally equivalent parts with identical electrical and package specifications. Selection depends on supply availability, lead time, and procurement preferences. All listed parts maintain the same logic function and performance characteristics.

Q: Is SN74AC241NSR compatible with my design? A: SN74AC241NSR is electrically equivalent but uses a narrower 20-SO package (5.30mm width) compared to the standard 20-SOIC (7.50mm width). PCB footprint verification is required before substitution. If your design uses the wider 7.50mm footprint, this part may not fit without layout modifications.

Q: Why is the 74AC241SCX listed as obsolete? A: The 74AC241SCX has reached end-of-life status. Active equivalent parts (74AC244SCX, SN74AC241DWR, SN74AC244DWR) are available to support ongoing production and design requirements.

Q: What packaging formats are available for these substitutes? A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Cut Tape (CT) with Digi-Reel, and Tube. Selection depends on production volume and assembly requirements. All formats maintain identical electrical and mechanical specifications.

Q: Are all substitute parts RoHS compliant? A: Yes. All listed substitute parts comply with ROHS3 standards and maintain REACH compliance as documented in their specifications.

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