SN74ACT241DW Equivalent & Substitute Parts

Part Overview

The SN74ACT241DW is a non-inverting buffer logic IC manufactured by Texas Instruments, designed for 2-element, 4-bit per element configurations with 3-state output capability. This device operates across a 4.5V to 5.5V supply range and is housed in a 20-SOIC surface mount package. The SN74ACT241DW is currently designated as Last Time Buy, indicating end-of-life status. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for production and field replacement applications.

Key Parameters

Parameter	Value
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)
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ACT241DW is determined by strict equivalence across 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)
Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount

Substitute parts are categorized into two groups: MFR Recommended substitutes (same base product number, different packaging) and Parametric Equivalents (functionally identical but different base product numbers or manufacturers). All listed substitutes maintain electrical and mechanical compatibility with the original SN74ACT241DW specification.

Parameter Comparison

Part Number	Manufacturer	Series	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Supply Voltage	Temp Range	Package	Packaging Type	Product Status	MSL
SN74ACT241DW	Texas Instruments	74ACT	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Tube	Last Time Buy	1
SN74ACT241DWR	Texas Instruments	74ACT	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Tape & Reel (TR)	Active	1
SN74ACT244DW	Texas Instruments	74ACT	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Tube	Discontinued at DiGi Electronics	1
MC74ACT241DWR2G	onsemi	74ACT	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Tape & Reel (TR)	Active	3
74ACT244SC	onsemi	74ACT	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Tube	Active	3
MC74ACT241DWG	onsemi	74ACT	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Not Specified	Obsolete	3
MC74ACT244DWG	onsemi	74ACT	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Tube	Active	3

Engineering Selection Recommendations

For applications requiring immediate component replacement, SN74ACT241DWR is the primary substitute. This part maintains identical electrical specifications and RoHS3 compliance while offering Active product status from Texas Instruments. The packaging difference (Tape & Reel versus Tube) does not affect functional compatibility.

For long-term production continuity, MC74ACT244DWG from onsemi provides an Active status alternative with full parametric equivalence. This part maintains all critical electrical parameters and RoHS3 compliance. The increased Moisture Sensitivity Level (MSL 3 versus MSL 1) requires standard moisture control during storage and handling but does not impact circuit performance.

SN74ACT244DW remains available with parametric equivalence but carries Discontinued status at DiGi Electronics, limiting long-term supply reliability. MC74ACT241DWG is designated Obsolete and should not be selected for new designs or long-term applications.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT241DWR directly replace SN74ACT241DW?

A: Yes. Both parts share identical electrical specifications, operating parameters, and 20-SOIC package dimensions. The only difference is packaging format (Tape & Reel versus Tube), which does not affect circuit functionality or PCB assembly compatibility.

Q: What is the difference between SN74ACT241DW and SN74ACT244DW?

A: Both parts are parametrically equivalent non-inverting buffers with identical electrical performance, element count, bit configuration, and output characteristics. They are functionally interchangeable at the circuit level. The base product numbers differ (241 versus 244), but this does not indicate functional differences for this product category.

Q: Why does MC74ACT241DWR2G have a higher Moisture Sensitivity Level?

A: MC74ACT241DWR2G carries MSL 3 (168 Hours) compared to MSL 1 (Unlimited) for the original SN74ACT241DW. This indicates the onsemi part requires moisture control during storage and handling within a 168-hour window after bag opening. Standard moisture-controlled storage and handling procedures eliminate any practical impact on circuit reliability.

Q: Is MC74ACT241DWG suitable for new designs?

A: No. MC74ACT241DWG is designated Obsolete and should not be selected for new designs. Use MC74ACT244DWG or SN74ACT241DWR for active product support and long-term availability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring compatibility with environmental and regulatory requirements.

Q: Does packaging type affect circuit performance?

A: No. Tube and Tape & Reel packaging formats contain identical die and internal construction. Packaging type affects only component handling, storage, and assembly processes, not electrical performance or reliability.

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