SN74ACT244PWG4 Equivalent & Substitute Parts

Part Overview

The SN74ACT244PWG4 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 5V supply levels.

The SN74ACT244PWG4 is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this buffer IC.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN74ACT244PWG4
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-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitute parts for the SN74ACT244PWG4 are qualified based on the following criteria:

Critical Parameters for Substitution:

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-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount

Substitution Categories:

Direct Manufacturer Substitutes – Identical electrical and mechanical specifications with different packaging or availability:

SN74ACT244PWR (Texas Instruments, Cut Tape & Digi-Reel, Active status)
SN74ACT244PW (Texas Instruments, Tube packaging, Discontinued at DiGi Electronics)
74ACT244MTCX (onsemi, Cut Tape & Digi-Reel, Active status)
MC74ACT244DTR2G (onsemi, Tape & Reel, Active status)

Parametric Equivalents – Identical electrical specifications and package type with different base product numbers or manufacturers:

74ACT244MTC (onsemi, Tube packaging, Active status)
SN74ACT241PW (Texas Instruments, Tube packaging, Discontinued at DiGi Electronics)
SN74ACT244PWE4 (Texas Instruments, Discontinued at DiGi Electronics)

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Supply Voltage	Temp Range	Package	Status	Inventory
SN74ACT244PWG4	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Discontinued	3000 Pcs
SN74ACT244PWR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	45400 Pcs
SN74ACT244PW	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Discontinued	2200 Pcs
74ACT244MTCX	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	1994 Pcs
MC74ACT244DTR2G	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	125100 Pcs
74ACT244MTC	onsemi	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Active	4395 Pcs
SN74ACT241PW	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Discontinued	1735 Pcs
SN74ACT244PWE4	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24/24	4.5V ~ 5.5V	-40°C ~ 85°C	20-TSSOP	Discontinued	867 Pcs

Engineering Selection Recommendations

Primary Recommendation: SN74ACT244PWR

The SN74ACT244PWR is the preferred substitute for the SN74ACT244PWG4. Both parts are manufactured by Texas Instruments with identical electrical and mechanical specifications. The SN74ACT244PWR maintains Active product status with significantly higher inventory availability (45,400 units), ensuring reliable supply chain access. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Secondary Recommendation: MC74ACT244DTR2G

The MC74ACT244DTR2G, manufactured by onsemi, provides an alternative from a different manufacturer while maintaining all critical electrical parameters and package specifications. This part carries Active status with the highest inventory level (125,100 units) among all substitutes, offering maximum supply security. Tape & Reel packaging is suitable for high-volume production environments.

Alternative Options: 74ACT244MTCX and 74ACT244MTC

Both onsemi parts (74ACT244MTCX and 74ACT244MTC) are functionally equivalent with Active product status. The 74ACT244MTCX in Cut Tape & Digi-Reel packaging supports both low-volume and production quantities. The 74ACT244MTC in Tube packaging is appropriate for smaller quantity requirements.

Discontinued Parts: SN74ACT244PW, SN74ACT241PW, SN74ACT244PWE4

These parts share identical electrical specifications but carry Discontinued status at DiGi Electronics. While inventory exists, these options should be considered only when active alternatives are unavailable or when existing stock must be utilized.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SN74ACT244PWG4 with SN74ACT244PWR?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications (2 elements, 4 bits per element, 3-state output, 24mA output current, 4.5V–5.5V supply, -40°C to 85°C operating range) and the same 20-TSSOP package. The difference is packaging format and product availability status. SN74ACT244PWR is currently Active with higher inventory.

Q: What is the difference between the various substitute parts?

A: All substitute parts meet the same electrical and mechanical requirements. Differences exist in manufacturer (Texas Instruments vs. onsemi), packaging format (Cut Tape, Tube, or Tape & Reel), and product status (Active vs. Discontinued). Selection depends on supply chain requirements, packaging preferences, and order quantities.

Q: Are onsemi parts (MC74ACT244DTR2G, 74ACT244MTCX, 74ACT244MTC) compatible with my design?

A: Yes. onsemi parts are fully compatible. They provide identical logic functionality, electrical performance, and package specifications. The 74ACT series is a standardized logic family with cross-manufacturer compatibility for parts meeting the same parameter specifications.

Q: What packaging format should I choose?

A: Packaging selection depends on your production process. Cut Tape & Digi-Reel (SN74ACT244PWR, 74ACT244MTCX) suits both prototype and production quantities. Tape & Reel (MC74ACT244DTR2G) is optimized for high-volume automated assembly. Tube packaging (SN74ACT244PW, 74ACT244MTC, SN74ACT241PW) is suitable for smaller quantities and manual handling.

Q: Is the SN74ACT241PW a true substitute?

A: The SN74ACT241PW meets all electrical and package specifications. However, it carries a different base product number (74ACT241 vs. 74ACT244). While parametrically equivalent, verify your design documentation to confirm compatibility with the 74ACT241 variant before substitution.

Q: Do all substitute parts have the same compliance certifications?

A: Yes. All listed substitute parts are ROHS3 compliant, REACH unaffected, and carry the same Moisture Sensitivity Level (MSL 1 – Unlimited). They meet identical regulatory and environmental standards.

Q: Which substitute has the best availability?

A: MC74ACT244DTR2G offers the highest inventory level at 125,100 units. SN74ACT244PWR provides the second-best availability at 45,400 units. Both ensure reliable supply for immediate and ongoing production needs.

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