74ACT241MTC Equivalent & Substitute Parts

Part Overview

The 74ACT241MTC is a non-inverting buffer logic IC manufactured by onsemi, featuring 2 elements with 4 bits per element and 3-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 20-TSSOP surface mount package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	74ACT241MTC
Manufacturer	onsemi
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
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74ACT241MTC 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)
Mounting Type: Surface Mount
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories:

Direct Package Equivalents (20-TSSOP): Parts maintaining identical package dimensions and all electrical specifications.

Parametric Equivalents with Package Variations: Parts meeting all electrical and functional specifications but with different package types (Tape & Reel, Tube, Cut Tape).

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Bits/Element	Output Type	Current (mA)	Voltage (V)	Temp Range (°C)	Package	Product Status
74ACT241MTC	onsemi	Buffer, Non-Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-TSSOP	Obsolete
MC74ACT241DTR2G	onsemi	Buffer, Non-Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-TSSOP	Active
74ACT244MTC	onsemi	Buffer, Non-Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-TSSOP	Active
SN74ACT241DBR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-SSOP	Active
SN74ACT241PWR	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-TSSOP	Active
SN74ACT241PW	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-TSSOP	Discontinued at DiGi Electronics
SN74ACT244PW	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-TSSOP	Discontinued at DiGi Electronics
SN74ACT244PWE4	Texas Instruments	Buffer, Non-Inverting	2	4	3-State	24, 24	4.5 ~ 5.5	-40 ~ 85	20-TSSOP	Discontinued at DiGi Electronics

Engineering Selection Recommendations

Primary Recommendation: MC74ACT241DTR2G (onsemi) is the preferred direct substitute. It maintains identical electrical specifications, package dimensions (20-TSSOP), and mounting type while offering active product status and ROHS3 compliance.

Secondary Recommendation: SN74ACT241PWR (Texas Instruments) provides full electrical and package equivalence with active product status and ROHS3 compliance. This part is suitable for applications requiring cross-manufacturer sourcing flexibility.

Alternative with Package Consideration: SN74ACT241DBR (Texas Instruments) offers electrical equivalence but uses a 20-SSOP package (0.209", 5.30mm width) instead of 20-TSSOP (0.173", 4.40mm width). PCB layout modifications are required for this substitution.

Parametric Equivalents: 74ACT244MTC, SN74ACT244PW, and SN74ACT244PWE4 meet all electrical specifications but carry different base product numbers (74ACT244 vs. 74ACT241). These are suitable only when circuit design permits functional equivalence between 74ACT241 and 74ACT244 buffer architectures.

Parts with discontinued status (SN74ACT241PW, SN74ACT244PW, SN74ACT244PWE4) should be evaluated for inventory availability before selection.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74ACT241MTC with MC74ACT241DTR2G?

A: Yes. MC74ACT241DTR2G is a direct electrical and package equivalent. The primary difference is packaging format (Tape & Reel vs. Tube) and product status (Active vs. Obsolete). Both use identical 20-TSSOP packages and meet all electrical specifications.

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

A: Both are non-inverting buffers with 2 elements, 4 bits per element, and 3-state outputs. The 74ACT244 variants (74ACT244MTC, SN74ACT244PW, SN74ACT244PWE4) are parametric equivalents that meet all electrical requirements but carry different base designations. Substitution is valid only if circuit design permits functional interchangeability.

Q: Why does SN74ACT241DBR have a different package size?

A: SN74ACT241DBR uses a 20-SSOP package (0.209", 5.30mm width) compared to the 20-TSSOP package (0.173", 4.40mm width) of the original part. While electrically equivalent, this requires PCB layout redesign and is not a pin-compatible substitute.

Q: Are all substitute parts RoHS3 compliant?

A: MC74ACT241DTR2G, SN74ACT241DBR, SN74ACT241PWR, SN74ACT241PW, SN74ACT244PW, and SN74ACT244PWE4 are all ROHS3 compliant. The original 74ACT241MTC does not list RoHS status.

Q: What is the Moisture Sensitivity Level (MSL) for all parts?

A: All parts listed maintain MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Which substitute offers the best long-term availability?

A: MC74ACT241DTR2G (onsemi) and SN74ACT241PWR (Texas Instruments) both carry active product status, ensuring continued availability and manufacturing support. Parts marked as discontinued at DiGi Electronics may have limited future sourcing options.

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