SN74ACT244NE4 Equivalent & Substitute Parts

Part Overview

The SN74ACT244NE4 is a non-inverting buffer logic integrated circuit manufactured by Texas Instruments. This device functions as an 8-channel, 4.5V to 5.5V buffer with 3-state output capability, designed for signal buffering and line driving applications in digital logic systems. The part is classified as Active status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when alternative manufacturers' equivalents are required to meet procurement specifications or cost objectives.

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)
Mounting Type	Through Hole
Package / Case	20-DIP (0.300", 7.62mm)
Series	74ACT

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ACT244NE4 is determined by strict parametric equivalence across the following criteria:

Critical Substitution Parameters:

Logic Type: Buffer, Non-Inverting (must match exactly)
Number of Elements: 2 (must match exactly)
Number of Bits per Element: 4 (must match exactly)
Output Type: 3-State (must match exactly)
Current - Output High, Low: 24mA, 24mA (must match exactly)
Voltage - Supply: 4.5V ~ 5.5V (must match exactly)
Operating Temperature: -40°C ~ 85°C (TA) (must match exactly)
Package / Case: 20-DIP (0.300", 7.62mm) (must match exactly)
Mounting Type: Through Hole (must match exactly)

All identified substitute parts meet these parametric requirements without exception. Substitution is valid based on electrical and mechanical compatibility alone.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Voltage Supply	Temp Range	Package	Status	RoHS
SN74ACT244NE4	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Active	ROHS3
SN74ACT244N	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Active	ROHS3
SN74ACT241N	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Active	ROHS3
TC74ACT244PF	Toshiba Semiconductor and Storage	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Active	ROHS3
CD74ACT244E	Harris Corporation	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Obsolete	Non-compliant
CD74ACT241E	Harris Corporation	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-DIP	Obsolete	Non-compliant

Engineering Selection Recommendations

Active Status Substitutes (Preferred):

SN74ACT244N, SN74ACT241N, and TC74ACT244PF are all classified as Active products with full ROHS3 compliance and REACH unaffected status. These parts are suitable for new designs and ongoing production applications. SN74ACT244N and SN74ACT241N are Texas Instruments products with identical compliance certifications to the primary part. TC74ACT244PF is a Toshiba equivalent with equivalent compliance status and MSL rating of 1 (Unlimited).

Obsolete Status Substitutes (Limited Use):

CD74ACT244E and CD74ACT241E are Harris Corporation products classified as Obsolete with RoHS non-compliance status. These parts are electrically and mechanically equivalent but do not meet current regulatory requirements. Selection of these parts is restricted to legacy system maintenance, repair applications, or situations where RoHS non-compliance is explicitly permitted by design specifications.

Inventory Availability:

Current stock levels are: SN74ACT244NE4 (1020 pcs), SN74ACT244N (3100 pcs), SN74ACT241N (1804 pcs), TC74ACT244PF (1697 pcs), CD74ACT244E (6289 pcs), CD74ACT241E (14209 pcs).

Frequently Asked Questions (FAQ)

Q: Can SN74ACT241N be used as a direct substitute for SN74ACT244NE4?

A: Yes. SN74ACT241N meets all parametric requirements: identical logic type, element count, bit configuration, output type, current ratings, voltage supply range, operating temperature, package type, and mounting method. Both parts are Active status with ROHS3 compliance.

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

A: The base product numbers differ, but the parametric specifications provided are identical across all critical substitution parameters. Both function as 2-element, 4-bit non-inverting buffers with 3-state output in 20-DIP packages.

Q: Are the Harris Corporation parts (CD74ACT244E and CD74ACT241E) suitable for new production?

A: No. These parts are classified as Obsolete with RoHS non-compliance status. They are electrically and mechanically equivalent but do not meet current regulatory standards. Use is limited to legacy system repair and maintenance where RoHS non-compliance is explicitly permitted.

Q: Does the Toshiba TC74ACT244PF have different moisture sensitivity requirements?

A: TC74ACT244PF has MSL rating of 1 (Unlimited), compared to "Not Applicable" for Texas Instruments parts. This indicates different moisture handling specifications but does not affect electrical or mechanical substitution compatibility.

Q: Can these parts be used interchangeably in the same PCB layout?

A: Yes. All substitute parts share identical 20-DIP package dimensions (0.300", 7.62mm) and through-hole mounting type. Pin-to-pin compatibility is maintained across all listed substitutes.

Q: What is the ECCN and HTSUS classification for these parts?

A: All parts share identical export and tariff classifications: ECCN EAR99 and HTSUS 8542.39.0001.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message