74ACQ241SCX Equivalent & Substitute Parts

Part Overview

The 74ACQ241SCX is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability in a 20-SOIC package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The 74ACQ241SCX operates across a 2V to 6V supply voltage range with ±24mA output current capability and maintains performance across the -40°C to 85°C industrial temperature range.

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
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 74ACQ241SCX are classified based on electrical and mechanical parameter alignment:

Parametric Equivalents maintain identical electrical specifications (logic type, element count, bit width, output type, current ratings, voltage range, temperature range) and package dimensions (20-SOIC, 0.295" width). These parts differ only in base product number, manufacturer, or product status:

74AC244SCX (onsemi)
MC74AC244DWR2G (onsemi)
SN74AC241DWR (Texas Instruments)
SN74AC244DWR (Texas Instruments)

Direct Manufacturer Equivalents are from alternative manufacturers with matching electrical and package specifications but may have different product status classifications:

SN74AC241DW (Texas Instruments, Last Time Buy status)

Similar Parts maintain core electrical specifications but feature package variations that may affect board layout compatibility:

SN74AC241NSR (Texas Instruments, 20-SO package with 0.209" width versus 0.295" width)

All substitute relationships are based strictly on: logic type, element/bit configuration, output type, current ratings, voltage supply range, operating temperature range, and package footprint compatibility.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements / Bits	Output Type	Current (mA)	Voltage (V)	Temp Range (°C)	Package	Product Status
74ACQ241SCX	onsemi	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (0.295")	Obsolete
74AC244SCX	onsemi	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (0.295")	Active
MC74AC244DWR2G	onsemi	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (0.295")	Active
SN74AC241DW	Texas Instruments	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (0.295")	Last Time Buy
SN74AC241DWR	Texas Instruments	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (0.295")	Active
SN74AC244DWR	Texas Instruments	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SOIC (0.295")	Active
SN74AC241NSR	Texas Instruments	Buffer, Non-Inverting	2 / 4	3-State	24, 24	2 ~ 6	-40 ~ 85	20-SO (0.209")	Active

Engineering Selection Recommendations

For applications currently using the obsolete 74ACQ241SCX, the following selection criteria apply:

Active Product Status Priority: 74AC244SCX, MC74AC244DWR2G, SN74AC241DWR, and SN74AC244DWR are all active products with current manufacturing support and full availability. These are preferred for new designs and long-term procurement.

Identical Package Footprint: All recommended substitutes except SN74AC241NSR maintain the 20-SOIC package with 0.295" width, ensuring direct PCB layout compatibility without redesign.

Compliance Considerations: All substitute parts carry ROHS3 compliance and REACH Unaffected status, matching the regulatory requirements of the original part.

Packaging Format: Selection between Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), or Tube packaging depends on production volume and assembly process requirements. All formats are available across the substitute options.

Last Time Buy Status: SN74AC241DW carries Last Time Buy status, indicating limited future availability. This part should be considered only if immediate procurement is required and long-term supply is not a concern.

Frequently Asked Questions (FAQ)

Q: Can I use SN74AC241NSR as a direct replacement for 74ACQ241SCX?

A: SN74AC241NSR is electrically equivalent but features a 20-SO package with 0.209" width instead of the 20-SOIC 0.295" width of the original part. This package dimension difference may require PCB layout modification. If board redesign is not feasible, use parts with identical 20-SOIC (0.295") packaging.

Q: What is the difference between 74AC244SCX and 74ACQ241SCX?

A: Both parts are non-inverting buffers with 2 elements, 4 bits per element, and 3-state output in 20-SOIC packages. The primary difference is product status: 74ACQ241SCX is obsolete while 74AC244SCX is active. Electrically and mechanically, they are equivalent and interchangeable.

Q: Are Texas Instruments and onsemi parts interchangeable?

A: Yes. SN74AC241DWR (Texas Instruments) and 74AC244SCX (onsemi) are parametric equivalents with identical electrical specifications and 20-SOIC package dimensions. Both are active products suitable for direct substitution.

Q: Does packaging format (Cut Tape, Tape & Reel, Tube) affect electrical performance?

A: No. Packaging format affects only procurement, handling, and assembly process compatibility. Electrical specifications remain identical regardless of packaging format.

Q: Which substitute part has the best long-term availability?

A: 74AC244SCX, MC74AC244DWR2G, SN74AC241DWR, and SN74AC244DWR all carry active product status with current manufacturing support. These four options provide the best long-term procurement reliability.

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