74HCT541D,652 Equivalent & Substitute Parts

Part Overview

The 74HCT541D,652 is a non-inverting buffer logic IC manufactured by Nexperia USA Inc., designed for 8-bit buffering applications with 3-state output capability. This component operates across a 4.5V to 5.5V supply range and is housed in a 20-SO surface mount package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	74HCT541D,652
Manufacturer	Nexperia USA Inc.
Logic Type	Buffer, Non-Inverting
Number of Elements	1
Number of Bits per Element	8
Output Type	3-State
Current - Output High, Low	6mA, 6mA
Voltage - Supply	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C (TA)
Package / Case	20-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 74HCT541D,652 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

Logic Type: Buffer, Non-Inverting
Number of Elements: 1
Number of Bits per Element: 8
Output Type: 3-State
Voltage - Supply: 4.5V ~ 5.5V
Package / Case: 20-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount
Current - Output High, Low: 6mA, 6mA (primary specification)

Substitute parts are categorized into two groups:

Upgrade Parts – Direct functional replacements with identical or superior electrical specifications and active product status:

CD74HCT541M (Harris Corporation)
CD74HCT541M96 (Texas Instruments)

Similar Parts – Functionally equivalent alternatives with minor parameter variations that remain within acceptable operating ranges for most applications:

MC74HCT541ADWG (onsemi)
MC74HCT541ADWR2G (onsemi)
MM74HCT541WM (Fairchild Semiconductor)
MM74HCT541WMX (onsemi)
SN74HCT541ANSR (Texas Instruments)
SN74HCT541DW (Texas Instruments)
SN74HCT541DWR (Texas Instruments)

Parameter Comparison

Part Number	Manufacturer	Logic Type	Output Current (mA)	Operating Temp (°C)	Package	Product Status	RoHS Status
74HCT541D,652	Nexperia USA Inc.	Buffer, Non-Inverting	6, 6	-40 ~ 125	20-SOIC	Obsolete	ROHS3 Compliant
CD74HCT541M	Harris Corporation	Buffer, Non-Inverting	6, 6	-55 ~ 125	20-SOIC	Obsolete	RoHS non-compliant
CD74HCT541M96	Texas Instruments	Buffer, Non-Inverting	6, 6	-55 ~ 125	20-SOIC	Active	ROHS3 Compliant
MC74HCT541ADWG	onsemi	Buffer, Non-Inverting	6, 6	-55 ~ 125	20-SOIC	Active	ROHS3 Compliant
MC74HCT541ADWR2G	onsemi	Buffer, Non-Inverting	6, 6	-55 ~ 125	20-SOIC	Active	ROHS3 Compliant
MM74HCT541WM	Fairchild Semiconductor	Buffer, Non-Inverting	7.2, 7.2	-40 ~ 85	20-SOIC	Active	Not specified
MM74HCT541WMX	onsemi	Buffer, Non-Inverting	7.2, 7.2	-40 ~ 85	20-SOIC	Active	ROHS3 Compliant
SN74HCT541ANSR	Texas Instruments	Buffer, Non-Inverting	6, 6	-40 ~ 85	20-SO	Active	ROHS3 Compliant
SN74HCT541DW	Texas Instruments	Buffer, Non-Inverting	6, 6	-40 ~ 85	20-SOIC	Discontinued at DiGi Electronics	ROHS3 Compliant
SN74HCT541DWR	Texas Instruments	Buffer, Non-Inverting	6, 6	-40 ~ 85	20-SOIC	Active	ROHS3 Compliant

Engineering Selection Recommendations

For RoHS3 Compliance Requirements: CD74HCT541M96, MC74HCT541ADWG, MC74HCT541ADWR2G, MM74HCT541WMX, SN74HCT541ANSR, and SN74HCT541DWR all meet ROHS3 compliance specifications. CD74HCT541M96 is recommended as the primary upgrade option due to active product status and extended operating temperature range (-55°C to 125°C).

For Extended Temperature Range (-55°C to 125°C): CD74HCT541M96, MC74HCT541ADWG, and MC74HCT541ADWR2G provide the widest operating temperature envelope, suitable for industrial and automotive applications requiring enhanced thermal performance.

For Active Product Status: CD74HCT541M96, MC74HCT541ADWG, MC74HCT541ADWR2G, MM74HCT541WM, MM74HCT541WMX, SN74HCT541ANSR, and SN74HCT541DWR are currently active products with ongoing manufacturer support and availability.

For Exact Output Current Specification (6mA, 6mA): CD74HCT541M96, MC74HCT541ADWG, MC74HCT541ADWR2G, SN74HCT541ANSR, SN74HCT541DW, and SN74HCT541DWR maintain the original 6mA output current specification. MM74HCT541WM and MM74HCT541WMX feature increased output current (7.2mA, 7.2mA), which may require circuit re-evaluation for current-sensitive applications.

For Packaging Consistency: All substitute parts except SN74HCT541ANSR use the 20-SOIC (0.295", 7.50mm Width) package, matching the original 74HCT541D,652 footprint. SN74HCT541ANSR uses a 20-SO (0.209", 5.30mm Width) package variant.

Frequently Asked Questions (FAQ)

Q: Can I use MM74HCT541WM or MM74HCT541WMX as direct replacements if my circuit is designed for 6mA output current?

A: MM74HCT541WM and MM74HCT541WMX feature 7.2mA output current specifications, which exceed the original 6mA specification. While these parts are functionally compatible as non-inverting 8-bit buffers with 3-state output, circuits designed with current-limiting resistors or current-sensitive load calculations must be re-evaluated to ensure the higher output current does not cause signal integrity issues or exceed component ratings.

Q: What is the difference between CD74HCT541M and CD74HCT541M96?

A: Both parts are functionally equivalent 74HCT541 buffers with identical electrical specifications. CD74HCT541M96 is manufactured by Texas Instruments and carries active product status with ROHS3 compliance. CD74HCT541M is manufactured by Harris Corporation and is classified as obsolete with RoHS non-compliance. CD74HCT541M96 is the recommended choice for new designs.

Q: Are onsemi parts MC74HCT541ADWG and MC74HCT541ADWR2G interchangeable?

A: Yes. Both parts are manufactured by onsemi with identical electrical specifications and 20-SOIC packaging. The primary difference is packaging format: MC74HCT541ADWG is supplied in Tube packaging, while MC74HCT541ADWR2G is supplied in Tape & Reel (TR) format. Selection depends on procurement and assembly requirements.

Q: Does SN74HCT541ANSR have a different package footprint than the original 74HCT541D,652?

A: Yes. SN74HCT541ANSR uses a 20-SO package (0.209", 5.30mm Width), while the original 74HCT541D,652 uses a 20-SOIC package (0.295", 7.50mm Width). Although both are 20-pin surface mount packages, the physical dimensions differ. PCB layout and footprint verification are required before substitution.

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

A: CD74HCT541M96 (Texas Instruments) is recommended for long-term availability due to active product status, ROHS3 compliance, and established supply chain presence. MC74HCT541ADWG and MC74HCT541ADWR2G (onsemi) are also active products with strong availability.

Q: Can I use parts with -40°C to 85°C operating temperature in applications requiring -40°C to 125°C operation?

A: No. Parts with -40°C to 85°C operating temperature (MM74HCT541WM, MM74HCT541WMX, SN74HCT541ANSR, SN74HCT541DW, SN74HCT541DWR) are not suitable for applications requiring operation above 85°C. For extended temperature range applications, use CD74HCT541M96, MC74HCT541ADWG, or MC74HCT541ADWR2G, which support -55°C to 125°C operation.

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