74ACTQ541MTC Equivalent & Substitute Parts

Part Overview

The 74ACTQ541MTC is a non-inverting buffer logic integrated circuit manufactured by onsemi, designed for 8-bit buffering applications with 3-state output capability. This device operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-TSSOP surface mount package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Specification
Logic Type	Buffer, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
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
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 74ACTQ541MTC is determined by strict equivalence across the following critical parameters:

Logic Type: Buffer, Non-Inverting
Number of Elements: 1
Number of Bits per Element: 8
Output Type: 3-State
Current - Output High, Low: 24mA, 24mA
Voltage - Supply: 4.5V ~ 5.5V
Mounting Type: Surface Mount
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories based on packaging configuration: Tape & Reel (TR) and Tube. Package/Case dimensions may vary within acceptable mechanical tolerances for surface mount assembly. All substitutes maintain identical electrical performance specifications and are manufactured to the same functional requirements.

Parameter Comparison

Parameter	74ACTQ541MTC (Main)	MC74ACT541DTR2G	MC74ACT541DTG	CD74ACT541SM96
Manufacturer	onsemi	onsemi	onsemi	Texas Instruments
Logic Type	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting	Buffer, Non-Inverting
Number of Elements	1	1	1	1
Number of Bits per Element	8	8	8	8
Output Type	3-State	3-State	3-State	3-State
Current - Output High, Low	24mA, 24mA	24mA, 24mA	24mA, 24mA	24mA, 24mA
Voltage - Supply	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)	-55°C ~ 125°C (TA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	20-SSOP (0.209", 5.30mm Width)
Packaging	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Product Status	Obsolete	Active	Active	Active
RoHS Status	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99	EAR99

Engineering Selection Recommendations

All three substitute parts maintain active product status, ensuring long-term availability and manufacturing support. MC74ACT541DTR2G and MC74ACT541DTG are onsemi products with identical electrical specifications and ROHS3 compliance. Both are available in higher quantities than the obsolete 74ACTQ541MTC.

MC74ACT541DTR2G is supplied in Tape & Reel packaging, suitable for automated assembly processes. MC74ACT541DTG is supplied in Tube packaging, appropriate for manual assembly or lower-volume applications.

CD74ACT541SM96 is a Texas Instruments equivalent offering an extended operating temperature range of -55°C to 125°C, compared to the -40°C to 85°C range of the main part and onsemi substitutes. This device uses a 20-SSOP package with slightly larger dimensions (0.209" width versus 0.173" for TSSOP). CD74ACT541SM96 is ROHS3 compliant and maintains identical electrical performance.

Selection between onsemi and Texas Instruments alternatives depends on supply chain preferences, packaging requirements, and temperature operating range needs. All substitutes are REACH compliant and classified under ECCN EAR99.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT541DTR2G directly replace 74ACTQ541MTC in existing designs?

A: Yes. MC74ACT541DTR2G is electrically and functionally equivalent. The primary difference is packaging format (Tape & Reel versus unspecified). Both use identical 20-TSSOP packages and operate within the same voltage and temperature specifications.

Q: What is the difference between MC74ACT541DTR2G and MC74ACT541DTG?

A: Both parts are onsemi products with identical electrical specifications and 20-TSSOP packaging. The difference is distribution packaging: MC74ACT541DTR2G is supplied on tape and reel for automated assembly, while MC74ACT541DTG is supplied in tubes for manual handling or lower-volume applications.

Q: Why does CD74ACT541SM96 have a different package designation (20-SSOP versus 20-TSSOP)?

A: CD74ACT541SM96 uses a 20-SSOP package with a width of 0.209 inches, compared to the 20-TSSOP package width of 0.173 inches. Both are surface mount packages with 20 pins. Physical board layout and footprint compatibility must be verified before substitution.

Q: Is CD74ACT541SM96 suitable for applications requiring extended temperature operation?

A: CD74ACT541SM96 operates across -55°C to 125°C, providing a wider temperature range than the 74ACTQ541MTC (-40°C to 85°C). This makes it suitable for applications requiring extended temperature performance. All other electrical specifications remain equivalent.

Q: Are all substitutes ROHS3 compliant?

A: Yes. MC74ACT541DTR2G, MC74ACT541DTG, and CD74ACT541SM96 are all ROHS3 compliant. The original 74ACTQ541MTC does not specify RoHS status.

Q: What is the MSL rating for these parts?

A: All parts, including the main part and substitutes, have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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