SN74ACT244DWRE4 Equivalent & Substitute Parts

Part Overview

The SN74ACT244DWRE4 is a non-inverting buffer logic IC manufactured by Texas Instruments, featuring 2 elements with 4 bits per element and 3-state output capability. This device is designed for signal buffering and line driving applications in digital logic circuits operating at 4.5V to 5.5V supply voltage. The part is currently discontinued at DiGi Electronics, making equivalent and substitute parts essential for ongoing design support and production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN74ACT244DWRE4
Manufacturer	Texas Instruments
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 for the SN74ACT244DWRE4 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)
Base Product Number: 74ACT244 or 74ACT241 (functionally equivalent buffer variants)

All substitute parts listed maintain identical electrical specifications and package footprint compatibility. Differences in product status, packaging format (Tape & Reel, Cut Tape, Tube), and moisture sensitivity level do not affect functional interchangeability in circuit applications.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Supply Voltage	Temp Range	Package	Product Status	Inventory
SN74ACT244DWRE4	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Discontinued	830 Pcs
CD74ACT244M96	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Active	2000 Pcs
SN74ACT241DWR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Active	2013 Pcs
SN74ACT244DWR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Active	93100 Pcs
SN74ACT244IDWREP	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Active	754 Pcs
74ACT244SC	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Active	1665 Pcs
MC74ACT244DWG	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Active	2032 Pcs
74ACT244SCX	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Active	9458 Pcs
MC74ACT241DWR2G	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Active	2200 Pcs
MC74ACT244DWR2G	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Active	35100 Pcs
NLV74ACT244DWR2G	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-SOIC	Obsolete	1713 Pcs

Engineering Selection Recommendations

For replacement of the discontinued SN74ACT244DWRE4, the following selection criteria apply:

Primary Recommendation: SN74ACT244DWR (Texas Instruments) offers the highest inventory availability (93,100 pcs) with active product status and identical electrical and mechanical specifications. This part maintains full compatibility with existing designs.

Alternative from Texas Instruments: CD74ACT244M96 provides active status with 2,000 pcs in stock and equivalent performance characteristics.

Cross-Manufacturer Alternatives: onsemi manufactures functionally equivalent parts including MC74ACT244DWR2G (35,100 pcs available) and 74ACT244SCX (9,458 pcs available). These parts maintain identical electrical specifications and 20-SOIC package compatibility. Moisture sensitivity level differences (MSL 3 vs. MSL 1) do not affect functional performance in standard operating environments.

Avoid: NLV74ACT244DWR2G is marked as obsolete and should not be selected for new designs despite current inventory availability.

All recommended parts are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can I use onsemi parts as direct replacements for Texas Instruments SN74ACT244DWRE4?

A: Yes. onsemi 74ACT244 and 74ACT241 series parts maintain identical logic type, element count, bit configuration, output type, current ratings, supply voltage, operating temperature range, and 20-SOIC package specifications. Functional interchangeability is assured across manufacturers.

Q: What is the difference between 74ACT244 and 74ACT241 base product numbers?

A: Both are non-inverting buffers with 2 elements and 4 bits per element in 3-state output configuration. The 74ACT241 and 74ACT244 are functionally equivalent buffer variants within the 74ACT logic family and are substitutable based on identical electrical parameters.

Q: Does packaging format (Tape & Reel vs. Cut Tape vs. Tube) affect circuit performance?

A: No. Packaging format affects only handling, storage, and assembly processes. Electrical and mechanical specifications remain identical regardless of packaging format. Selection should be based on manufacturing process requirements.

Q: Why do some parts have MSL 3 (168 Hours) while the original has MSL 1 (Unlimited)?

A: Moisture Sensitivity Level indicates storage and handling requirements before soldering. MSL 1 requires no special moisture control; MSL 3 requires storage below 30% relative humidity or use of desiccant packaging. This does not affect circuit performance after assembly and does not impact functional substitution.

Q: Is the NLV74ACT244DWR2G suitable for new designs?

A: No. This part is marked as obsolete and should not be selected for new production designs. Use active status parts such as SN74ACT244DWR, CD74ACT244M96, or MC74ACT244DWR2G instead.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory compliance of the original SN74ACT244DWRE4.

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